/*
* Copyright 2012-2014 Aerospike, Inc.
*
* Portions may be licensed to Aerospike, Inc. under one or more contributor
* license agreements.
*
* 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 com.aerospike.client.command;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import com.aerospike.client.AerospikeException;
import com.aerospike.client.Key;
import com.aerospike.client.Record;
import com.aerospike.client.ResultCode;
import com.aerospike.client.ScanCallback;
import com.aerospike.client.cluster.Node;
import com.aerospike.client.policy.Policy;
import com.aerospike.client.policy.ScanPolicy;
public final class ScanCommand extends MultiCommand {
private final ScanPolicy policy;
private final String namespace;
private final String setName;
private final ScanCallback callback;
private final String[] binNames;
public ScanCommand(
Node node,
ScanPolicy policy,
String namespace,
String setName,
ScanCallback callback,
String[] binNames
) {
super(node);
this.policy = policy;
this.namespace = namespace;
this.setName = setName;
this.callback = callback;
this.binNames = binNames;
}
@Override
protected Policy getPolicy() {
return policy;
}
@Override
protected void writeBuffer() throws AerospikeException {
setScan(policy, namespace, setName, binNames);
}
protected boolean parseRecordResults(int receiveSize)
throws AerospikeException, IOException {
// Read/parse remaining message bytes one record at a time.
dataOffset = 0;
while (dataOffset < receiveSize) {
readBytes(MSG_REMAINING_HEADER_SIZE);
int resultCode = dataBuffer[5] & 0xFF;
if (resultCode != 0) {
if (resultCode == ResultCode.KEY_NOT_FOUND_ERROR) {
return false;
}
throw new AerospikeException(resultCode);
}
byte info3 = dataBuffer[3];
// If this is the end marker of the response, do not proceed further
if ((info3 & Command.INFO3_LAST) == Command.INFO3_LAST) {
return false;
}
int generation = Buffer.bytesToInt(dataBuffer, 6);
int expiration = Buffer.bytesToInt(dataBuffer, 10);
int fieldCount = Buffer.bytesToShort(dataBuffer, 18);
int opCount = Buffer.bytesToShort(dataBuffer, 20);
Key key = parseKey(fieldCount);
// Parse bins.
Map<String,Object> bins = null;
for (int i = 0 ; i < opCount; i++) {
readBytes(8);
int opSize = Buffer.bytesToInt(dataBuffer, 0);
byte particleType = dataBuffer[5];
byte nameSize = dataBuffer[7];
readBytes(nameSize);
String name = Buffer.utf8ToString(dataBuffer, 0, nameSize);
int particleBytesSize = (int) (opSize - (4 + nameSize));
readBytes(particleBytesSize);
Object value = Buffer.bytesToParticle(particleType, dataBuffer, 0, particleBytesSize);
if (bins == null) {
bins = new HashMap<String,Object>();
}
bins.put(name, value);
}
if (! valid) {
throw new AerospikeException.ScanTerminated();
}
// Call the callback function.
callback.scanCallback(key, new Record(bins, null, generation, expiration));
}
return true;
}
}