Package org.jredis.ri.alphazero

Source Code of org.jredis.ri.alphazero.JRedisSupport

/*
*   Copyright 2009-2010 Joubin Houshyar
*
*   Licensed under the Apache License, Version 2.0 (the "License");
*   you may not use this file except in compliance with the License.
*   You may obtain a copy of the License at
*   
*   http://www.apache.org/licenses/LICENSE-2.0
*   
*   Unless required by applicable law or agreed to in writing, software
*   distributed under the License is distributed on an "AS IS" BASIS,
*   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*   See the License for the specific language governing permissions and
*   limitations under the License.
*/

package org.jredis.ri.alphazero;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.StringTokenizer;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

import org.jredis.ClientRuntimeException;
import org.jredis.JRedis;
import org.jredis.KeyValueSet;
import org.jredis.ObjectInfo;
import org.jredis.ProviderException;
import org.jredis.Redis;
import org.jredis.RedisException;
import org.jredis.RedisType;
import org.jredis.Sort;
import org.jredis.ZSetEntry;
import org.jredis.connector.Connection;
import org.jredis.protocol.BulkResponse;
import org.jredis.protocol.Command;
import org.jredis.protocol.MultiBulkResponse;
import org.jredis.protocol.Response;
import org.jredis.protocol.ValueResponse;
import org.jredis.ri.RI.Release;
import org.jredis.ri.RI.Version;
import org.jredis.ri.alphazero.semantics.DefaultKeyCodec;
import org.jredis.ri.alphazero.support.Convert;
import org.jredis.ri.alphazero.support.DefaultCodec;
import org.jredis.ri.alphazero.support.SortSupport;

/**
*
* [TODO: document me!]
*
* @author  Joubin Houshyar (alphazero@sensesay.net)
* @version alpha.0, Apr 10, 2009
* @since   alpha.0
*
*/
public abstract class JRedisSupport implements JRedis {
 
  // ------------------------------------------------------------------------
  // Properties
  // ------------------------------------------------------------------------

  // ------------------------------------------------------------------------
  // Constructors
  // ------------------------------------------------------------------------
 
  // ------------------------------------------------------------------------
  // Extension point(s)
  /*
   * This class provides the convenience of a uniform implementation wide mapping
   * of JRedis api semantics to the native protocol level semantics of byte[]s.
   *
   * Extensions can use the provided extension points to provide or delegate the
   * servicing of request calls. 
   */
  // ------------------------------------------------------------------------
 
  /**
   * This method mimics the eponymous {@link Connection#serviceRequest(Command, byte[]...)}
   * which defines the blocking api semantics of Synchronous connections.  The extending class
   * can either directly (a) implement the protocol requirements, or, (b) delegate to a
   * {@link Connection} instance, or, (c) utilize a pool of {@link Connection}s. 
   *
   * @param cmd
   * @param args
   * @return
   * @throws RedisException
   * @throws ClientRuntimeException
   * @throws ProviderException
   */
  protected abstract Response serviceRequest (Command cmd, byte[]...args) throws RedisException, ClientRuntimeException, ProviderException;
  // ------------------------------------------------------------------------
  // INTERFACE
  // ================================================================ Redis
  /*
   * Support of all the JRedis interface methods.
   *
   * This class uses the UTF-8 character set for all conversions due to its
   * use of the Convert and Codec support classes.
   *
   * All calls are forwarded to an abstract serviceRequest method that the
   * extending classes are expected to implement. 
   *
   * Implementation note:
   * The methods in this class use redundant code in marshalling request params
   * and in unmarshalling the response data.  We certainly can use a few helper
   * functions to reduce the redundancy, but given that such methods would be
   * repeatedly called, it was decided to effectively inline these statements in
   * each method body. 
   */
  // ------------------------------------------------------------------------


  @Override
  public <K> boolean setbit(K key, int offset, boolean value) throws ProviderException, ClientRuntimeException, RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    /* ValueRespose */
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.SETBIT, keybytes, Convert.toBytes(offset), Convert.toBytes(value ? 1 : 0));
      return valResponse.getLongValue() == 1;
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
  }


  @Override
  public <K> boolean getbit(K key, int offset) throws ProviderException, ClientRuntimeException, RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    /* ValueRespose */
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.GETBIT, keybytes, Convert.toBytes(offset));
      return valResponse.getLongValue() == 1;
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
  }


  //  @Override
//  public <K extends Object> JRedis auth(K key) throws RedisException {
//    byte[] keydata = null;
//    if((keydata = getKeyBytes(key)) == null)
//      throw new IllegalArgumentException ("invalid key => ["+key+"]");
//
//    this.serviceRequest(Command.AUTH, keydata);
//    return this;
//  }
  @Override
  public <K extends Object> void bgsave() throws RedisException {
    this.serviceRequest(Command.BGSAVE);
  }
 
  @Override
  public <K extends Object> String bgrewriteaof() throws RedisException {
    /* boolean ValueRespose */
    String value = null;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.BGREWRITEAOF);
      value = valResponse.getStringValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }
 
  @Override
  public <K extends Object> JRedis ping() throws RedisException {
    this.serviceRequest(Command.PING);
    return this;
  }

  @Override
  public <K extends Object> JRedis flushall() throws RedisException {
    this.serviceRequest(Command.FLUSHALL).getStatus();
    return this;
  }
  @Override
  public <K extends Object> JRedis flushdb() throws RedisException {
    this.serviceRequest(Command.FLUSHDB).getStatus();
    return this;
  }
//  @Override
//  public <K extends Object> JRedis select(int index) throws RedisException {
//    this.serviceRequest(Command.SELECT, Convert.toBytes(index));
//    return this;
//  }
 
  public <K extends Object> void slaveof(String host, int port) throws RedisException{
    byte[] hostbytes = null;
    if((hostbytes = getKeyBytes(host)) == null)
      throw new IllegalArgumentException ("invalid host => ["+host+"]");

    byte[] portbytes = null;
    if((portbytes = Convert.toBytes(port)) == null)
      throw new IllegalArgumentException ("invalid port => ["+port+"]");

    this.serviceRequest(Command.SLAVEOF, hostbytes, portbytes);
  }
 
  public <K extends Object> void slaveofnone() throws RedisException{
    this.serviceRequest(Command.SLAVEOF, "no".getBytes(), "one".getBytes());
  }
 
  @Override
  public <K extends Object> void rename(K oldkey, K newkey) throws RedisException {
    byte[] oldkeydata = null;
    if((oldkeydata = getKeyBytes(oldkey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+oldkey+"]");

    byte[] newkeydata = null;
    if((newkeydata = getKeyBytes(newkey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+newkey+"]");

    this.serviceRequest(Command.RENAME, oldkeydata, newkeydata);
  }
 
  @Override
  public <K extends Object> boolean renamenx(K oldkey, K newkey) throws RedisException{
    byte[] oldkeydata = null;
    if((oldkeydata = getKeyBytes(oldkey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+oldkey+"]");

    byte[] newkeydata = null;
    if((newkeydata = getKeyBytes(newkey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+newkey+"]");

    /* boolean ValueRespose */
    boolean value = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.RENAMENX, oldkeydata, newkeydata);
      value = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }
  @Override
  public <K extends Object> byte[] rpoplpush(K srcList, K destList)
  throws RedisException
  {
    byte[] srckeybytes = null;
    if((srckeybytes = getKeyBytes(srcList)) == null)
      throw new IllegalArgumentException ("invalid src key => ["+srcList+"]");
    byte[] destkeybytes = null;
    if((destkeybytes = getKeyBytes(destList)) == null)
      throw new IllegalArgumentException ("invalid dest key => ["+destList+"]");
    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.RPOPLPUSH, srckeybytes, destkeybytes);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
   
  }
 
  @Override
  public <K extends Object> void rpush(K key, byte[] value)
  throws RedisException
  {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
   
    if(value == null)
      throw new IllegalArgumentException ("null value for list op");
   
    this.serviceRequest(Command.RPUSH, keybytes, value);
  }
  @Override
  public <K extends Object> void rpush(K key, String value) throws RedisException {
//    rpush(key, DefaultCodec.encode(value));
    rpush(key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> void rpush(K key, Number value) throws RedisException {
    rpush(key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> void rpush (K key, T value) throws RedisException
  {
    rpush(key, DefaultCodec.encode(value));
  }

  @Override
  public <K extends Object> boolean sadd(K key, byte[] member)
  throws RedisException
  {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
    /* boolean ValueRespose */
    boolean res = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.SADD, keybytes, member);
      res = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return res;
  }
  @Override
  public <K extends Object> boolean sadd (K key, String value) throws RedisException {
    return sadd (key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> boolean sadd (K key, Number value) throws RedisException {
    return sadd (key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> boolean sadd (K key, T value) throws RedisException
  {
    return sadd (key, DefaultCodec.encode(value));
  }

  @Override
  public <K extends Object> boolean zadd(K key, double score, byte[] member)
  throws RedisException
  {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
    /* boolean ValueRespose */
    boolean res = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.ZADD, keybytes, Convert.toBytes(score), member);
      res = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return res;
  }
  @Override
  public <K extends Object> boolean zadd (K key, double score, String value) throws RedisException {
    return zadd (key, score, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> boolean zadd (K key, double score, Number value) throws RedisException {
    return zadd (key, score, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> boolean zadd (K key, double score, T value) throws RedisException
  {
    return zadd (key, score, DefaultCodec.encode(value));
  }

  @SuppressWarnings("boxing")
  @Override
  public <K extends Object> Double zincrby(K key, double score, byte[] member)
  throws RedisException
  {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
    /* Double BulkResponse */
    Double resvalue = null;
    try {
      BulkResponse bulkResponse = (BulkResponse) this.serviceRequest(Command.ZINCRBY, keybytes, Convert.toBytes(score), member);
      if (bulkResponse.getBulkData() != null)
        resvalue = Convert.toDouble(bulkResponse.getBulkData());
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }
  @Override
  public <K extends Object> Double zincrby (K key, double score, String value) throws RedisException {
    return zincrby (key, score, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> Double zincrby (K key, double score, Number value) throws RedisException {
    return zincrby (key, score, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> Double zincrby (K key, double score, T value) throws RedisException
  {
    return zincrby (key, score, DefaultCodec.encode(value));
  }

 
  @Override
  public <K extends Object> void save()
  throws RedisException
  {
    this.serviceRequest(Command.SAVE);
  }
 
  // -------- set

  @Override
  public <K extends Object> void set(K key, byte[] value) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    this.serviceRequest(Command.SET, keybytes, value);
  }
  @Override
  public <K extends Object> void set(K key, String value) throws RedisException {
    set(key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> void set(K key, Number value) throws RedisException {
    set(key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> void set (K key, T value) throws RedisException
  {
    set(key, DefaultCodec.encode(value));
  }
 
  @Override
  public <K extends Object> byte[] getset(K key, byte[] value) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.GETSET, keybytes, value);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
  }
  @Override
  public <K extends Object> byte[] getset(K key, String value) throws RedisException {
    return getset(key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> byte[] getset(K key, Number value) throws RedisException {
    return getset(key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable>
  byte[] getset (K key, T value) throws RedisException
  {
    return getset(key, DefaultCodec.encode(value));
  }
 
  @Override
  public <K extends Object> boolean setnx(K key, byte[] value) throws RedisException{
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    boolean resvalue = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.SETNX, keybytes, value);
      resvalue = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }
  @Override
  public <K extends Object> boolean setnx(K key, String value) throws RedisException {
    return setnx(key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> boolean setnx(K key, Number value) throws RedisException {
    return setnx(key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> boolean setnx (K key, T value) throws RedisException {
    return setnx(key, DefaultCodec.encode(value));
  }

 
  @Override
  public <K extends Object> long append(K key, byte[] value) throws RedisException{
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    long resvalue = -1;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.APPEND, keybytes, value);
      resvalue = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }
  @Override
  public <K extends Object> long append(K key, String value) throws RedisException {
    return append(key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> long append(K key, Number value) throws RedisException {
    return append(key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> long append (K key, T value) throws RedisException {
    return append(key, DefaultCodec.encode(value));
  }

  private boolean msetnx(byte[][] mappings) throws RedisException {
    boolean resvalue = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.MSETNX, mappings);
      resvalue = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }
  @Override
  public <K extends Object> boolean msetnx(Map<K, byte[]> keyValueMap) throws RedisException {
//    KeyCodec<Object> codec = DefaultKeyCodec.provider();
    byte[][] mappings = new byte[keyValueMap.size()*2][];
    int i = 0;
    for (Entry<K, byte[]> e : keyValueMap.entrySet()){
      mappings[i++] = getKeyBytes(e.getKey());
      mappings[i++] = e.getValue();
    }
    return msetnx(mappings);
  }
  @Override
  public <K extends Object> boolean msetnx(KeyValueSet.ByteArrays<K> keyValueMap) throws RedisException {
    return msetnx(keyValueMap.getMappings());
  }
  @Override
  public <K extends Object> boolean msetnx(KeyValueSet.Strings<K> keyValueMap) throws RedisException{
    return msetnx(keyValueMap.getMappings());
  }
  @Override
  public <K extends Object> boolean msetnx(KeyValueSet.Numbers<K> keyValueMap) throws RedisException{
    return msetnx(keyValueMap.getMappings());
  }
  @Override
  public <K extends Object, T extends Serializable> boolean msetnx(KeyValueSet.Objects<K, T> keyValueMap) throws RedisException{
    return msetnx(keyValueMap.getMappings());
  }

 
  @Override
  public <K extends Object> boolean sismember(K key, byte[] member) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    /* boolean ValueRespose */
    boolean value = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.SISMEMBER, keybytes, member);
      value = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }

  @Override
  public <K extends Object> boolean sismember(K key, String value) throws RedisException {
    return sismember(key, DefaultCodec.encode(value));
  }

  @Override
  public <K extends Object> boolean sismember(K key, Number numberValue) throws RedisException {
    return sismember (key, String.valueOf(numberValue).getBytes());
  }

  @Override
  public <K extends Object, T extends Serializable> boolean sismember(K key, T object) throws RedisException {
    return sismember(key, DefaultCodec.encode(object));
  }

  public <K extends Object> boolean smove (K srcKey, K destKey, byte[] member) throws RedisException {
    byte[] srcKeyBytes = null;
    if((srcKeyBytes = getKeyBytes(srcKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+srcKey+"]");

    byte[] destKeyBytes = null;
    if((destKeyBytes = getKeyBytes(destKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+destKey+"]");

    /* boolean ValueRespose */
    boolean value = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.SMOVE, srcKeyBytes, destKeyBytes, member);
      value = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }
  public <K extends Object> boolean smove (K srcKey, K destKey, String stringValue) throws RedisException {
    return smove (srcKey, destKey, DefaultCodec.encode(stringValue));
  }
  public <K extends Object> boolean smove (K srcKey, K destKey, Number numberValue) throws RedisException {
    return smove (srcKey, destKey, String.valueOf(numberValue).getBytes());
  }
  public <K extends Object, T extends Serializable>
  boolean smove (K srcKey, K destKey, T object) throws RedisException {
    return smove (srcKey, destKey, DefaultCodec.encode(object));
  }
      
  // ------------------------------------------------------------------------
  // Commands operating on hashes
  // ------------------------------------------------------------------------
 
  public <K extends Object> boolean hset(K hashKey, K hashField, byte[] valuethrows RedisException {
    byte[] hashKeyBytes = null;
    if((hashKeyBytes = getKeyBytes(hashKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+hashKey+"]");

    byte[] hashFieldBytes = null;
    if((hashFieldBytes = getKeyBytes(hashField)) == null)
      throw new IllegalArgumentException ("invalid field => ["+hashField+"]");

    /* boolean ValueRespose */
    boolean response = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.HSET, hashKeyBytes, hashFieldBytes, value);
      response = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return response;
  }
  public <K extends Object> boolean hset(K key, K field, String stringValuethrows RedisException {
    return hset (key, field, DefaultCodec.encode(stringValue));
  }
  public <K extends Object> boolean hset(K key, K field, Number numberValuethrows RedisException {
    return hset (key, field, String.valueOf(numberValue).getBytes());
  }
  public <K extends Object, T extends Serializable>
  boolean hset(K key, K field, T objectthrows RedisException {
    return hset (key, field, DefaultCodec.encode(object));
  }
 
  public <K extends Object> byte[] hget(K hashKey, K hashFieldthrows RedisException {
    byte[] hashKeyBytes = null;
    if((hashKeyBytes = getKeyBytes(hashKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+hashKey+"]");

    byte[] hashFieldBytes = null;
    if((hashFieldBytes = getKeyBytes(hashField)) == null)
      throw new IllegalArgumentException ("invalid field => ["+hashField+"]");

    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.HGET, hashKeyBytes, hashFieldBytes);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
  }
 
  public <K extends Object> boolean hexists(K hashKey, K hashFieldthrows RedisException {
    byte[] hashKeyBytes = null;
    if((hashKeyBytes = getKeyBytes(hashKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+hashKey+"]");

    byte[] hashFieldBytes = null;
    if((hashFieldBytes = getKeyBytes(hashField)) == null)
      throw new IllegalArgumentException ("invalid field => ["+hashField+"]");

    boolean resp = false;
    try {
      ValueResponse response = (ValueResponse) this.serviceRequest(Command.HEXISTS, hashKeyBytes, hashFieldBytes);
      resp = response.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resp;
  }
  @Override
  public <K extends Object> boolean hdel(K hashKey, K hashFieldthrows RedisException {
    byte[] hashKeyBytes = null;
    if((hashKeyBytes = getKeyBytes(hashKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+hashKey+"]");

    byte[] hashFieldBytes = null;
    if((hashFieldBytes = getKeyBytes(hashField)) == null)
      throw new IllegalArgumentException ("invalid field => ["+hashField+"]");

    boolean resp = false;
    try {
      ValueResponse response = (ValueResponse) this.serviceRequest(Command.HDEL, hashKeyBytes, hashFieldBytes);
      resp = response.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resp;
  }
  @Override
  public <K extends Object> long hlen(K hashKeythrows RedisException {
    byte[] hashKeyBytes = null;
    if((hashKeyBytes = getKeyBytes(hashKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+hashKey+"]");

    long resp = 0;
    try {
      ValueResponse response = (ValueResponse) this.serviceRequest(Command.HLEN, hashKeyBytes);
      resp = response.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resp;
  }
  @Redis(versions="1.3.n")
  @Override
  public <K extends Object> List<byte[]> hkeys(K hashKeythrows RedisException {
    byte[] hashKeyBytes = null;
    if((hashKeyBytes = getKeyBytes(hashKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+hashKey+"]");

    List<byte[]> multibulkData = null;
    try {
      MultiBulkResponse response = (MultiBulkResponse) this.serviceRequest(Command.HKEYS, hashKeyBytes);
//      if(null != response.getMultiBulkData()) resp = DefaultCodec.toStr(response.getMultiBulkData());
      multibulkData = response.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return multibulkData;
  }

  @Redis(versions="1.3.n")
  @Override
  public <K extends Object> List<byte[]> hvals(K hashKeythrows RedisException {
    byte[] hashKeyBytes = null;
    if((hashKeyBytes = getKeyBytes(hashKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+hashKey+"]");

    List<byte[]> resp = null;
    try {
      MultiBulkResponse response = (MultiBulkResponse) this.serviceRequest(Command.HVALS, hashKeyBytes);
      resp = response.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return resp;
  }

  @Redis(versions="1.3.n")
  @Override
  public <K extends Object> Map<byte[], byte[]> hgetall(K hashKeythrows RedisException {
    byte[] hashKeyBytes = null;
    if((hashKeyBytes = getKeyBytes(hashKey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+hashKey+"]");

    Map<byte[], byte[]> resp = null;
    try {
      MultiBulkResponse response = (MultiBulkResponse) this.serviceRequest(Command.HGETALL, hashKeyBytes);
      List<byte[]> bulkdata = response.getMultiBulkData();
      if(null != bulkdata) {
        resp = new HashMap<byte[], byte[]>(bulkdata.size()/2);
        for(int i=0; i<bulkdata.size(); i+=2){
          resp.put(bulkdata.get(i), bulkdata.get(i+1));
        }
      }
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return resp;
  }

 
  /* ------------------------------- commands returning int value --------- */

  @Override
  public <K extends Object> long incr(K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    /* ValueRespose */
    long value = Long.MIN_VALUE;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.INCR, keybytes);
      value = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }

  @Override
  public <K extends Object> long incrby(K key, int delta) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    /* ValueRespose */
    long value = Long.MIN_VALUE;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.INCRBY, keybytes, Convert.toBytes(delta));
      value = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }

  @Override
  public <K extends Object> long decr(K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    /* ValueRespose */
    long value = Long.MAX_VALUE;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.DECR, keybytes);
      value = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }

  @Override
  public <K extends Object> long decrby(K key, int delta) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    /* ValueRespose */
    long value = Long.MAX_VALUE;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.DECRBY, keybytes, Convert.toBytes(delta));
      value = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }

  @Override
  public <K extends Object> long llen(K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    /* ValueRespose */ /* int since max size is 1GB, an integer 1,073,741,824 */
    long value = Integer.MIN_VALUE;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.LLEN, keybytes);
      value = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }

  @Override
  public <K extends Object> long scard(K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
    long value = Long.MIN_VALUE;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.SCARD, keybytes);
      value = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }
 
  @Override
  public <K extends Object> long zcard(K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
    long value = Long.MIN_VALUE;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.ZCARD, keybytes);
      value = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }
 
  public <K extends Object> byte[] srandmember (K setkey) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(setkey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+setkey+"]");

    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.SRANDMEMBER, keybytes);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
  }

  public <K extends Object> byte[] spop (K setkey) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(setkey)) == null)
      throw new IllegalArgumentException ("invalid key => ["+setkey+"]");

    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.SPOP, keybytes);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
  }

  /* ------------------------------- commands returning long value --------- */

  @Override
  public <K extends Object> long dbsize() throws RedisException {
    long value = Long.MIN_VALUE;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.DBSIZE);
      value = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }
  @Override
  public <K extends Object> long lastsave() throws RedisException {
    long value = Long.MIN_VALUE;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.LASTSAVE);
      value = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }

  /* ------------------------------- commands returning byte[] --------- */

  @Override
  public <K extends Object> byte[] get(K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.GET, keybytes);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
  }

  @Override
  public <K extends Object> byte[] lindex(K key, long index) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.LINDEX, keybytes, Convert.toBytes(index));
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
  }
  @Override
  public <K extends Object> byte[] lpop(K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.LPOP, keybytes);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
  }

  @Override
  public <K extends Object> byte[] rpop(K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.RPOP, keybytes);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
  }


  /* ------------------------------- commands returning String--------- */

  @Override
  public byte[] randomkey() throws RedisException {
    /* ValueRespose */
    byte[] bulkData = null;
//    String stringValue = null;
    try {
      BulkResponse valResponse = (BulkResponse) this.serviceRequest(Command.RANDOMKEY);
      bulkData = valResponse.getBulkData();
//      if (null != bulkData) {
//        stringValue = new String(bulkData);
//      }
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
//    return stringValue;
    return bulkData;
  }
  @Override
  public <K extends Object> RedisType type(K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    RedisType  type = null;
    /* ValueRespose */
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.TYPE, keybytes);
      String stringValue = valResponse.getStringValue();
      type = RedisType.valueOf(stringValue);
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return type;
  }

  @Override
  public <K extends Object> ObjectInfo debug (K key) throws RedisException {
   
    byte[] keybytes = getKeyBytes(key);
//    if(key.length() == 0)
//      throw new IllegalArgumentException ("invalid zero length key => ["+key+"]");

    ObjectInfo  objectInfo = null;
    /* ValueRespose */
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.DEBUG, "OBJECT".getBytes(), keybytes);
      String stringValue = valResponse.getStringValue();
      objectInfo = ObjectInfo.valueOf(stringValue);
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return objectInfo;
  }
  /* ------------------------------- commands returning Maps --------- */

  @Override
  public <K extends Object> Map<String, String> info() throws RedisException {

    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.INFO);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }

    StringTokenizer tokenizer = new StringTokenizer(new String(bulkData), "\r\n");
    Map<String, String>  infomap = new HashMap<String, String>(48);
    while (tokenizer.hasMoreTokens()){
      String info = tokenizer.nextToken();
      System.out.format("line:<%s>\n", info);
      // ignore comments "# heading"
      if(info.startsWith("#"))
        continue;
      int c = info.indexOf(':');
      String key =info.substring(0, c);
      String value = info.substring(c+1);
      infomap.put(key, value);
    }
    return infomap;
  }

  private void mset(byte[][] mappings) throws RedisException {
    this.serviceRequest(Command.MSET, mappings);
  }
  public <K extends Object> void mset(Map<K, byte[]> keyValueMap) throws RedisException {
//    KeyCodec<Object> codec = DefaultKeyCodec.provider();
    byte[][] mappings = new byte[keyValueMap.size()*2][];
    int i = 0;
    for (Entry<K, byte[]> e : keyValueMap.entrySet()){
      mappings[i++] = getKeyBytes(e.getKey());
      mappings[i++] = e.getValue();
    }
    mset(mappings);
  }
  public <K extends Object> void mset(KeyValueSet.ByteArrays<K> keyValueMap) throws RedisException {
    mset(keyValueMap.getMappings());
  }
  public <K extends Object> void mset(KeyValueSet.Strings<K> keyValueMap) throws RedisException{
    mset(keyValueMap.getMappings());
  }
  public <K extends Object> void mset(KeyValueSet.Numbers<K> keyValueMap) throws RedisException{
    mset(keyValueMap.getMappings());
  }
  public <K extends Object, T extends Serializable> void mset(KeyValueSet.Objects<K, T> keyValueMap) throws RedisException{
    mset(keyValueMap.getMappings());
  }

  @Override
  public <K extends Object> List<byte[]> mget(K...keys) throws RedisException {

    if(null == keys || keys.length == 0) throw new IllegalArgumentException("no keys specified");
    byte[] keydata = null;
    byte[][] keybytes = new byte[keys.length][];
    int i=0;
    for(K k : keys) {
      if((keydata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"] @ index: " + i);
     
      keybytes[i++] = keydata;
    }
   
    List<byte[]> multiBulkData= null;
    try {
      MultiBulkResponse MultiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.MGET, keybytes);
      multiBulkData = MultiBulkResponse.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return multiBulkData;
  }

  @Override
  public <K extends Object> List<byte[]> smembers(K key) throws RedisException {
    byte[] keydata = null;
    if((keydata = getKeyBytes(key)) == null)
      throw new RedisException (Command.KEYS, "ERR Invalid key.");

    List<byte[]> multiBulkData= null;
    try {
      MultiBulkResponse MultiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.SMEMBERS, keydata);
      multiBulkData = MultiBulkResponse.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return multiBulkData;
  }
  @Override
  public <K extends Object> List<byte[]> keys() throws RedisException {
    return this.keys("*");
  }

  @Override
  public <K extends Object> List<byte[]> keys(K pattern) throws RedisException {
    byte[] keydata = null;
    if((keydata = getKeyBytes(pattern)) == null)
      throw new RedisException (Command.KEYS, "ERR Invalid key.");

    List<byte[]> multiBulkData= null;
    try {
      MultiBulkResponse MultiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.KEYS, keydata);
      multiBulkData = MultiBulkResponse.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
//    return DefaultCodec.toStr(multiBulkData);
    return multiBulkData;
    /*
    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.KEYS, keydata);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }

    StringTokenizer tokenizer = new StringTokenizer(new String(bulkData), " ");
    List<String>  keyList = new ArrayList <String>(12);
    while (tokenizer.hasMoreTokens()){
      keyList.add(tokenizer.nextToken());
    }
    return keyList;
    */
  }

  @Override
  public <K extends Object> List<byte[]> lrange(K key, long from, long to) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(from);
    byte[] toBytes = Convert.toBytes(to);

    List<byte[]> multiBulkData= null;
    try {
      MultiBulkResponse multiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.LRANGE, keybytes, fromBytes, toBytes);
      multiBulkData = multiBulkResponse.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return multiBulkData;
  }

  @Override
  public <K extends Object> byte[] substr(K key, long from, long to) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(from);
    byte[] toBytes = Convert.toBytes(to);

    byte[] bulkData= null;
    try {
      BulkResponse bulkResponse = (BulkResponse) this.serviceRequest(Command.SUBSTR, keybytes, fromBytes, toBytes);
      bulkData = bulkResponse.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
  }

  @Override
  public <K extends Object> List<byte[]> zrangebyscore (K key, double minScore, double maxScore) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(minScore);
    byte[] toBytes = Convert.toBytes(maxScore);

    List<byte[]> multiBulkData= null;
    try {
      MultiBulkResponse MultiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.ZRANGEBYSCORE, keybytes, fromBytes, toBytes);
      multiBulkData = MultiBulkResponse.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return multiBulkData;
  }

  @Override
  public <K extends Object> List<ZSetEntry> zrangebyscoreSubset (K key, double minScore, double maxScore) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(minScore);
    byte[] toBytes = Convert.toBytes(maxScore);

    List<ZSetEntry> list= null;
    try {
      MultiBulkResponse multiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.ZRANGEBYSCORE$OPTS, keybytes, fromBytes, toBytes, Command.Option.WITHSCORES.bytes);
      List<byte[]> bulkData = multiBulkResponse.getMultiBulkData();
      if(null != bulkData){
        list = new ArrayList<ZSetEntry>(bulkData.size()/2);
        for(int i=0; i<bulkData.size(); i+=2){
          list.add(new ZSetEntryImpl(bulkData.get(i), bulkData.get(i+1)));
        }
      }
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return list;
  }

  @Override
  public <K extends Object> long zremrangebyscore (K key, double minScore, double maxScore) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(minScore);
    byte[] toBytes = Convert.toBytes(maxScore);

    long resp = Long.MIN_VALUE;
    try {
      ValueResponse valueResponse = (ValueResponse) this.serviceRequest(Command.ZREMRANGEBYSCORE, keybytes, fromBytes, toBytes);
      resp = valueResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a numeric ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resp;
  }

  @Override
  public <K extends Object> long zcount (K key, double minScore, double maxScore) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(minScore);
    byte[] toBytes = Convert.toBytes(maxScore);

    long resp = Long.MIN_VALUE;
    try {
      ValueResponse valueResponse = (ValueResponse) this.serviceRequest(Command.ZCOUNT, keybytes, fromBytes, toBytes);
      resp = valueResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a numeric ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resp;
  }

  @Override
  public <K extends Object> long zremrangebyrank (K key, long minRank, long maxRank) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(minRank);
    byte[] toBytes = Convert.toBytes(maxRank);

    long resp = Long.MIN_VALUE;
    try {
      ValueResponse valueResponse = (ValueResponse) this.serviceRequest(Command.ZREMRANGEBYRANK, keybytes, fromBytes, toBytes);
      resp = valueResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a numeric ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resp;
  }

  @Override
  public <K extends Object> List<byte[]> zrange(K key, long from, long to) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(from);
    byte[] toBytes = Convert.toBytes(to);

    List<byte[]> multiBulkData= null;
    try {
      MultiBulkResponse MultiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.ZRANGE, keybytes, fromBytes, toBytes);
      multiBulkData = MultiBulkResponse.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return multiBulkData;
  }

  @Override
  public <K extends Object> List<byte[]> zrevrange(K key, long from, long to) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(from);
    byte[] toBytes = Convert.toBytes(to);

    List<byte[]> multiBulkData= null;
    try {
      MultiBulkResponse MultiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.ZREVRANGE, keybytes, fromBytes, toBytes);
      multiBulkData = MultiBulkResponse.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return multiBulkData;
  }
  @Override
  public <K extends Object> List<ZSetEntry> zrangeSubset(K key, long from, long to) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(from);
    byte[] toBytes = Convert.toBytes(to);

    List<ZSetEntry> list= null;
    try {
      MultiBulkResponse multiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.ZRANGE$OPTS, keybytes, fromBytes, toBytes, Command.Option.WITHSCORES.bytes);
      List<byte[]> bulkData = multiBulkResponse.getMultiBulkData();
      if(null != bulkData){
        list = new ArrayList<ZSetEntry>(bulkData.size()/2);
        for(int i=0; i<bulkData.size(); i+=2){
          list.add(new ZSetEntryImpl(bulkData.get(i), bulkData.get(i+1)));
        }
      }
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return list;
  }

  @Override
  public <K extends Object> List<ZSetEntry> zrevrangeSubset(K key, long from, long to) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(from);
    byte[] toBytes = Convert.toBytes(to);

    List<ZSetEntry> list= null;
    try {
      MultiBulkResponse multiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.ZREVRANGE$OPTS, keybytes, fromBytes, toBytes, Command.Option.WITHSCORES.bytes);
      List<byte[]> bulkData = multiBulkResponse.getMultiBulkData();
      if(null != bulkData){
        list = new ArrayList<ZSetEntry>(bulkData.size()/2);
        for(int i=0; i<bulkData.size(); i+=2){
          list.add(new ZSetEntryImpl(bulkData.get(i), bulkData.get(i+1)));
        }
      }
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return list;
  }


  @Override
  public <K extends Object> Sort sort(final K key) {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    final JRedisSupport client = this;
//    Sort sortQuery = new SortSupport (key, keybytes) {
    Sort sortQuery = new SortSupport (keybytes) {
      @Override
      protected List<byte[]> execSort(byte[]... fullSortCmd)
      throws IllegalStateException, RedisException {
       
        List<byte[]> multiBulkData= null;
        try {
          MultiBulkResponse multiBulkResponse = (MultiBulkResponse) client.serviceRequest(Command.SORT, fullSortCmd);
          multiBulkData = multiBulkResponse.getMultiBulkData();
        }
        catch (ClassCastException e){
          throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
        }
        return multiBulkData;
      }

      protected List<byte[]> execSortStore(byte[]... fullSortCmd)
      throws IllegalStateException, RedisException {
       
        List<byte[]> multiBulkData= new ArrayList<byte[]>(1);
        try {
          ValueResponse valueResp = (ValueResponse) client.serviceRequest(Command.SORT$STORE, fullSortCmd);
          long resSize = valueResp.getLongValue();
          multiBulkData.add(Convert.toBytes(resSize));
        }
        catch (ClassCastException e){
          throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
        }
        return multiBulkData;
      }

      @Override
          protected Future<List<byte[]>> execAsyncSort (byte[]... fullSortCmd) {
        throw new IllegalStateException("JRedis does not support asynchronous sort.");
          }
      @Override
          protected Future<List<byte[]>> execAsyncSortStore (byte[]... fullSortCmd) {
        throw new IllegalStateException("JRedis does not support asynchronous sort.");
          }
    };
    return sortQuery;
  }

  /* ------------------------------- commands that don't get a response --------- */

  @Override
  public <K extends Object> void quit()  {
    try {
      this.serviceRequest(Command.QUIT);
    }
    catch (RedisException e) { /* NotConnectedException is OK */
      e.printStackTrace();
      throw new ProviderException ("Quit raised an unexpected RedisException -- Bug");
    }
//    return true;
  }
//  @Override
//  public <K extends Object> void shutdown() {
//    try {
//      this.serviceRequest(Command.SHUTDOWN);
//    }
//    catch (RedisException e) { /* NotConnectedException is OK */
//      e.printStackTrace();
//      throw new ProviderException ("Shutdown raised an unexpected RedisException -- Bug");
//    }
////    return true;
//  }
  @Override
  public <K extends Object> List<byte[]> sinter(K set1, K... sets) throws RedisException {
    byte[] keydata = null;
    if((keydata = getKeyBytes(set1)) == null)
      throw new IllegalArgumentException ("invalid key => ["+set1+"]");

    byte[][] keybytes = new byte[1+sets.length][];
    int i=0; keybytes[i++] = keydata;
    for(K k : sets) {
      if((keydata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      keybytes[i++] = keydata;
    }
   
    List<byte[]> multiBulkData= null;
    try {
      MultiBulkResponse MultiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.SINTER, keybytes);
      multiBulkData = MultiBulkResponse.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return multiBulkData;
  }

  @Override
  public <K extends Object> List<byte[]> sunion(K set1, K... sets) throws RedisException {
    byte[] keydata = null;
    if((keydata = getKeyBytes(set1)) == null)
      throw new IllegalArgumentException ("invalid key => ["+set1+"]");

    byte[][] keybytes = new byte[1+sets.length][];
    int i=0; keybytes[i++] = keydata;
    for(K k : sets) {
      if((keydata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      keybytes[i++] = keydata;
    }
   
    List<byte[]> multiBulkData= null;
    try {
      MultiBulkResponse MultiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.SUNION, keybytes);
      multiBulkData = MultiBulkResponse.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return multiBulkData;
  }

  @Override
  public <K extends Object> List<byte[]> sdiff(K set1, K... sets) throws RedisException {
    byte[] keydata = null;
    if((keydata = getKeyBytes(set1)) == null)
      throw new IllegalArgumentException ("invalid key => ["+set1+"]");

    byte[][] keybytes = new byte[1+sets.length][];
    int i=0; keybytes[i++] = keydata;
    for(K k : sets) {
      if((keydata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      keybytes[i++] = keydata;
    }
   
    List<byte[]> multiBulkData= null;
    try {
      MultiBulkResponse MultiBulkResponse = (MultiBulkResponse) this.serviceRequest(Command.SDIFF, keybytes);
      multiBulkData = MultiBulkResponse.getMultiBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a MultiBulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return multiBulkData;
  }

  @Override
  public <K extends Object> void sinterstore(K dest, K... sets) throws RedisException {
    byte[] keydata = null;
    if((keydata = getKeyBytes(dest)) == null)
      throw new IllegalArgumentException ("invalid key => ["+dest+"]");

    byte[][] setbytes = new byte[1+sets.length][];
    int i=0;
    setbytes[i++] = keydata;
    byte[] setdata =null;
    for(K k : sets) {
      if((setdata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      setbytes[i++] = setdata;
    }
   
    this.serviceRequest(Command.SINTERSTORE, setbytes);
  }

  @Override
  public <K extends Object> void sunionstore(K dest, K... sets) throws RedisException {
    byte[] keydata = null;
    if((keydata = getKeyBytes(dest)) == null)
      throw new IllegalArgumentException ("invalid key => ["+dest+"]");

    byte[][] setbytes = new byte[1+sets.length][];
    int i=0;
    setbytes[i++] = keydata;
    byte[] setdata =null;
    for(K k : sets) {
      if((setdata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      setbytes[i++] = setdata;
    }
   
    this.serviceRequest(Command.SUNIONSTORE, setbytes);
  }

  @Override
  public <K extends Object> void sdiffstore(K dest, K... sets) throws RedisException {
    byte[] keydata = null;
    if((keydata = getKeyBytes(dest)) == null)
      throw new IllegalArgumentException ("invalid key => ["+dest+"]");

    byte[][] setbytes = new byte[1+sets.length][];
    int i=0;
    setbytes[i++] = keydata;
    byte[] setdata =null;
    for(K k : sets) {
      if((setdata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"]");
      setbytes[i++] = setdata;
    }
   
    this.serviceRequest(Command.SDIFFSTORE, setbytes);
  }

  @Override
  public <K extends Object> long del(K ...keys ) throws RedisException {
   
    if(null == keys || keys.length == 0) throw new IllegalArgumentException("no keys specified");
    byte[] keydata = null;
    byte[][] keybytes = new byte[keys.length][];
    int i=0;
    for(K k : keys) {
      if((keydata = getKeyBytes(k)) == null)
        throw new IllegalArgumentException ("invalid key => ["+k+"] @ index: " + i);
     
      keybytes[i++] = keydata;
    }

    long resvalue = -1;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.DEL, keybytes);
      resvalue = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }


  @Override
  public <K extends Object> boolean exists(K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    boolean resvalue = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.EXISTS, keybytes);
      resvalue = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }


  @Override
  public <K extends Object> void lpush(K key, byte[] value) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
   
    if(value == null)
      throw new IllegalArgumentException ("null value for list op");
   
   
    this.serviceRequest(Command.LPUSH, keybytes, value);
  }
  @Override
  public <K extends Object> void lpush(K key, String value) throws RedisException {
    lpush(key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> void lpush(K key, Number value) throws RedisException {
    lpush(key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> void lpush (K key, T value) throws RedisException
  {
    lpush(key, DefaultCodec.encode(value));
  }
 


  @Override
  public <K extends Object> long lrem(K key, byte[] value, int count) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] countBytes = Convert.toBytes(count);

    long remcnt = 0;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.LREM, keybytes, countBytes, value);
      remcnt = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return remcnt;
  }
  @Override
  public <K extends Object> long lrem (K listKey, String value, int count) throws RedisException{
    return lrem (listKey, DefaultCodec.encode(value), count);
  }
  @Override
  public <K extends Object> long lrem (K listKey, Number numberValue, int count) throws RedisException {
    return lrem (listKey, String.valueOf(numberValue).getBytes(), count);
  }
  @Override
  public <K extends Object, T extends Serializable>
  long lrem (K listKey, T object, int count) throws RedisException{
    return lrem (listKey, DefaultCodec.encode(object), count);
  }


  @Override
  public <K extends Object> void lset(K key, long index, byte[] value) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] indexBytes = Convert.toBytes(index);
    this.serviceRequest(Command.LSET, keybytes, indexBytes, value);
  }
  @Override
  public <K extends Object> void lset (K key, long index, String value) throws RedisException {
    lset (key, index, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> void lset (K key, long index, Number numberValue) throws RedisException{
    lset (key, index, String.valueOf(numberValue).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> void lset (K key, long index, T object) throws RedisException{
    lset (key, index, DefaultCodec.encode(object));
  }

  @Override
  public <K extends Object> boolean move(K key, int dbIndex) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");
   
    byte[] toBytes = Convert.toBytes(dbIndex);

    boolean resvalue = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.MOVE, keybytes, toBytes);
      resvalue = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }


  @Override
  public <K extends Object> boolean srem(K key, byte[] member) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    boolean resvalue = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.SREM, keybytes, member);
      resvalue = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }
  @Override
  public <K extends Object> boolean srem (K key, String value) throws RedisException {
    return srem (key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> boolean srem (K key, Number value) throws RedisException {
    return srem (key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> boolean srem (K key, T value) throws RedisException
  {
    return srem (key, DefaultCodec.encode(value));
  }

  @Override
  public <K extends Object> boolean zrem(K key, byte[] member) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    boolean resvalue = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.ZREM, keybytes, member);
      resvalue = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }
  @Override
  public <K extends Object> boolean zrem (K key, String value) throws RedisException {
    return zrem (key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> boolean zrem (K key, Number value) throws RedisException {
    return zrem (key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> boolean zrem (K key, T value) throws RedisException
  {
    return zrem (key, DefaultCodec.encode(value));
  }

  @SuppressWarnings("boxing")
  @Override
  public <K extends Object> Double zscore(K key, byte[] member) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    Double resvalue = null;
    try {
      BulkResponse bulkResponse = (BulkResponse) this.serviceRequest(Command.ZSCORE, keybytes, member);
      if (bulkResponse.getBulkData() != null)
        resvalue = Convert.toDouble(bulkResponse.getBulkData());
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }
  @Override
  public <K extends Object> Double zscore (K key, String value) throws RedisException {
    return zscore (key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> Double zscore (K key, Number value) throws RedisException {
    return zscore (key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> Double zscore (K key, T value) throws RedisException
  {
    return zscore (key, DefaultCodec.encode(value));
  }

  @Override
  public <K extends Object> long zrank(K key, byte[] member) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    long resvalue = -1;
    try {
      ValueResponse bulkResponse = (ValueResponse) this.serviceRequest(Command.ZRANK, keybytes, member);
      resvalue = bulkResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }
  @Override
  public <K extends Object> long zrank (K key, String value) throws RedisException {
    return zrank (key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> long zrank (K key, Number value) throws RedisException {
    return zrank (key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> long zrank (K key, T value) throws RedisException
  {
    return zrank (key, DefaultCodec.encode(value));
  }

  @Override
  public <K extends Object> long zrevrank(K key, byte[] member) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    long resvalue = -1;
    try {
      ValueResponse bulkResponse = (ValueResponse) this.serviceRequest(Command.ZREVRANK, keybytes, member);
      resvalue = bulkResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }
  @Override
  public <K extends Object> long zrevrank (K key, String value) throws RedisException {
    return zrevrank (key, DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> long zrevrank (K key, Number value) throws RedisException {
    return zrevrank (key, String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable> long zrevrank (K key, T value) throws RedisException
  {
    return zrevrank (key, DefaultCodec.encode(value));
  }


  @Override
  public <K extends Object> void ltrim(K key, long keepFrom, long keepTo) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] fromBytes = Convert.toBytes(keepFrom);
    byte[] toBytes = Convert.toBytes(keepTo);
    this.serviceRequest(Command.LTRIM, keybytes, fromBytes, toBytes);
  }

  @Override
  public <K extends Object> boolean expire(K key, int ttlseconds) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    byte[] ttlbytes = Convert.toBytes(ttlseconds);
   
    boolean resvalue = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.EXPIRE, keybytes, ttlbytes);
      resvalue = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }

  @Override
  public <K extends Object> boolean expireat(K key, long epochtime) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

    long expiretime = TimeUnit.SECONDS.convert(epochtime, TimeUnit.MILLISECONDS);
    byte[] expiretimeBytes = Convert.toBytes(expiretime);
   
    boolean resvalue = false;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.EXPIREAT, keybytes, expiretimeBytes);
      resvalue = valResponse.getBooleanValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return resvalue;
  }
 
  @Override
  public <K extends Object> long ttl (K key) throws RedisException {
    byte[] keybytes = null;
    if((keybytes = getKeyBytes(key)) == null)
      throw new IllegalArgumentException ("invalid key => ["+key+"]");

   
    long value = Long.MIN_VALUE;
    try {
      ValueResponse valResponse = (ValueResponse) this.serviceRequest(Command.TTL, keybytes);
      value = valResponse.getLongValue();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a ValueResponse here => " + e.getLocalizedMessage(), e);
    }
    return value;
  }
  @Override
  public <K extends Object> byte[] echo (byte[] value) throws RedisException {
    if(value ==null)
      throw new IllegalArgumentException ("invalid echo value => [null]");

    byte[] bulkData= null;
    try {
      BulkResponse response = (BulkResponse) this.serviceRequest(Command.ECHO, value);
      bulkData = response.getBulkData();
    }
    catch (ClassCastException e){
      throw new ProviderException("Expecting a BulkResponse here => " + e.getLocalizedMessage(), e);
    }
    return bulkData;
  }
  @Override
  public <K extends Object> byte[] echo(String value) throws RedisException {
    return echo(DefaultCodec.encode(value));
  }
  @Override
  public <K extends Object> byte[] echo(Number value) throws RedisException {
    return echo(String.valueOf(value).getBytes());
  }
  @Override
  public <K extends Object, T extends Serializable>
  byte[] echo (T value) throws RedisException
  {
    return echo(DefaultCodec.encode(value));
  }
  // ------------------------------------------------------------------------
  // Transactional commands
  // ------------------------------------------------------------------------
  /**
   * one option is to return a subclass of JRedis (e.g. JRedisCommandSequence)
   * and have that interface declare discard and multi.  Benefit is being able
   * to associate state with the transaction.
   * @throws RedisException
   */
  @Version(major=2, minor=0, release=Release.ALPHA)
  public <K extends Object> JRedis multi() throws RedisException {
    throw new ProviderException("NOT IMPLEMENTED");
//    // works
//    this.serviceRequest(Command.MULTI);
//    return this;
  }
  /**
   * @throws RedisException
   */
  @Version(major=2, minor=0, release=Release.ALPHA)
  public <K extends Object> JRedis discard () throws RedisException {
    throw new ProviderException("NOT IMPLEMENTED");
//    // works
//    this.serviceRequest(Command.DISCARD);
//    return this;
  }
  // ------------------------------------------------------------------------
  // utility
  // ------------------------------------------------------------------------
 
  // TODO: integrate using KeyCodec and a CodecManager at client spec and init time.
  // TODO: (implied) ClientSpec (impls. ConnectionSpec)
  // this isn't cooked yet -- lets think more about the implications...
  //
//  static final private Map<String, byte[]>  keyByteCache = new ConcurrentHashMap<String, byte[]>();
  public static boolean  CacheKeys  = false;
 
  public static <K extends Object> byte[] getKeyBytes(K key) throws IllegalArgumentException {
    return DefaultKeyCodec.provider().encode(key);
  }
}
TOP

Related Classes of org.jredis.ri.alphazero.JRedisSupport

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.