/*
* Copyright 1999-2011 Alibaba Group Holding Ltd.
*
* 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.alibaba.druid.pool;
import java.sql.Array;
import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.NClob;
import java.sql.PreparedStatement;
import java.sql.SQLClientInfoException;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
import java.sql.SQLWarning;
import java.sql.SQLXML;
import java.sql.Savepoint;
import java.sql.Statement;
import java.sql.Struct;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Executor;
import javax.sql.ConnectionEvent;
import javax.sql.ConnectionEventListener;
import javax.sql.StatementEventListener;
import com.alibaba.druid.logging.Log;
import com.alibaba.druid.logging.LogFactory;
import com.alibaba.druid.pool.DruidPooledPreparedStatement.PreparedStatementKey;
import com.alibaba.druid.pool.PreparedStatementPool.MethodType;
import com.alibaba.druid.proxy.jdbc.ConnectionProxy;
import com.alibaba.druid.proxy.jdbc.TransactionInfo;
/**
* @author wenshao<szujobs@hotmail.com>
*/
public class DruidPooledConnection implements javax.sql.PooledConnection, Connection {
private final static Log LOG = LogFactory.getLog(DruidPooledConnection.class);
protected Connection conn;
protected ConnectionHolder holder;
protected TransactionInfo transactionInfo;
private final boolean dupCloseLogEnable;
private boolean traceEnable = false;
private boolean diable = false;
private boolean closed = false;
private final Thread ownerThread;
public DruidPooledConnection(ConnectionHolder holder){
this.conn = holder.getConnection();
this.holder = holder;
dupCloseLogEnable = holder.getDataSource().isDupCloseLogEnable();
ownerThread = Thread.currentThread();
}
public Thread getOwnerThread() {
return ownerThread;
}
public boolean isTraceEnable() {
return traceEnable;
}
public void setTraceEnable(boolean traceEnable) {
this.traceEnable = traceEnable;
}
public SQLException handleException(Throwable t) throws SQLException {
final ConnectionHolder holder = this.holder;
//
if (holder != null) {
DruidAbstractDataSource dataSource = holder.getDataSource();
dataSource.handleConnectionException(this, t);
}
if (t instanceof SQLException) {
throw (SQLException) t;
}
throw new SQLException("Error", t);
}
public boolean isOracle() {
return holder.getDataSource().isOracle();
}
void closePoolableStatement(DruidPooledPreparedStatement stmt) throws SQLException {
if (this.holder == null) {
return;
}
PreparedStatement rawStatement = stmt.getRawPreparedStatement();
try {
rawStatement.clearParameters();
} catch (SQLException ex) {
LOG.error("clear parameter error", ex);
}
if (holder == null) {
return;
}
if (holder.isPoolPreparedStatements()) {
holder.getStatementPool().put(stmt.getPreparedStatementHolder());
stmt.clearResultSet();
holder.removeTrace(stmt);
stmt.getPreparedStatementHolder().setFetchRowPeak(stmt.getFetchRowPeak());
stmt.setClosed(true); // soft set close
} else {
stmt.closeInternal();
holder.getDataSource().incrementClosedPreparedStatementCount();
}
}
public ConnectionHolder getConnectionHolder() {
return holder;
}
@Override
public Connection getConnection() {
return conn;
}
void disable() {
this.traceEnable = false;
this.holder = null;
this.transactionInfo = null;
this.diable = true;
}
public boolean isDiable() {
return diable;
}
@Override
public void close() throws SQLException {
ConnectionHolder holder = this.holder;
if (this.diable) {
return;
}
if (holder == null && dupCloseLogEnable) {
LOG.error("dup close");
return;
}
for (ConnectionEventListener listener : holder.getConnectionEventListeners()) {
listener.connectionClosed(new ConnectionEvent(this));
}
holder.getDataSource().recycle(this);
this.holder = null;
conn = null;
transactionInfo = null;
closed = true;
}
// ////////////////////
@Override
public PreparedStatement prepareStatement(String sql) throws SQLException {
checkState();
PreparedStatementHolder stmtHolder = null;
PreparedStatementKey key = new PreparedStatementKey(sql, getCatalog(), MethodType.M1);
boolean poolPreparedStatements = holder.isPoolPreparedStatements();
if (poolPreparedStatements) {
stmtHolder = holder.getStatementPool().get(key);
}
if (stmtHolder == null) {
try {
stmtHolder = new PreparedStatementHolder(key, conn.prepareStatement(sql));
holder.getDataSource().incrementPreparedStatementCount();
} catch (SQLException ex) {
handleException(ex);
}
}
holder.getDataSource().initStatement(this, stmtHolder.getStatement());
DruidPooledPreparedStatement rtnVal = new DruidPooledPreparedStatement(this, stmtHolder);
holder.addTrace(rtnVal);
return rtnVal;
}
@Override
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency)
throws SQLException {
checkState();
PreparedStatementHolder stmtHolder = null;
PreparedStatementKey key = new PreparedStatementKey(sql, getCatalog(), MethodType.M2, resultSetType,
resultSetConcurrency);
boolean poolPreparedStatements = holder.isPoolPreparedStatements();
if (poolPreparedStatements) {
stmtHolder = holder.getStatementPool().get(key);
}
if (stmtHolder == null) {
try {
stmtHolder = new PreparedStatementHolder(key, conn.prepareStatement(sql, resultSetType,
resultSetConcurrency));
holder.getDataSource().incrementPreparedStatementCount();
} catch (SQLException ex) {
handleException(ex);
}
}
holder.getDataSource().initStatement(this, stmtHolder.getStatement());
DruidPooledPreparedStatement rtnVal = new DruidPooledPreparedStatement(this, stmtHolder);
holder.addTrace(rtnVal);
return rtnVal;
}
@Override
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency,
int resultSetHoldability) throws SQLException {
checkState();
PreparedStatementHolder stmtHolder = null;
PreparedStatementKey key = new PreparedStatementKey(sql, getCatalog(), MethodType.M3, resultSetType,
resultSetConcurrency, resultSetHoldability);
boolean poolPreparedStatements = holder.isPoolPreparedStatements();
if (poolPreparedStatements) {
stmtHolder = holder.getStatementPool().get(key);
}
if (stmtHolder == null) {
try {
stmtHolder = new PreparedStatementHolder(key, conn.prepareStatement(sql, resultSetType,
resultSetConcurrency,
resultSetHoldability));
holder.getDataSource().incrementPreparedStatementCount();
} catch (SQLException ex) {
handleException(ex);
}
}
holder.getDataSource().initStatement(this, stmtHolder.getStatement());
DruidPooledPreparedStatement rtnVal = new DruidPooledPreparedStatement(this, stmtHolder);
holder.addTrace(rtnVal);
return rtnVal;
}
@Override
public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
checkState();
PreparedStatementKey key = new PreparedStatementKey(sql, getCatalog(), MethodType.M4, columnIndexes);
PreparedStatementHolder stmtHolder = null;
boolean poolPreparedStatements = holder.isPoolPreparedStatements();
if (poolPreparedStatements) {
stmtHolder = holder.getStatementPool().get(key);
}
if (stmtHolder == null) {
try {
stmtHolder = new PreparedStatementHolder(key, conn.prepareStatement(sql, columnIndexes));
holder.getDataSource().incrementPreparedStatementCount();
} catch (SQLException ex) {
handleException(ex);
}
}
holder.getDataSource().initStatement(this, stmtHolder.getStatement());
DruidPooledPreparedStatement rtnVal = new DruidPooledPreparedStatement(this, stmtHolder);
holder.addTrace(rtnVal);
return rtnVal;
}
@Override
public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
checkState();
PreparedStatementKey key = new PreparedStatementKey(sql, getCatalog(), MethodType.M5, columnNames);
PreparedStatementHolder stmtHolder = null;
boolean poolPreparedStatements = holder.isPoolPreparedStatements();
if (poolPreparedStatements) {
stmtHolder = holder.getStatementPool().get(key);
}
if (stmtHolder == null) {
try {
stmtHolder = new PreparedStatementHolder(key, conn.prepareStatement(sql, columnNames));
holder.getDataSource().incrementPreparedStatementCount();
} catch (SQLException ex) {
handleException(ex);
}
}
holder.getDataSource().initStatement(this, stmtHolder.getStatement());
DruidPooledPreparedStatement rtnVal = new DruidPooledPreparedStatement(this, stmtHolder);
holder.addTrace(rtnVal);
return rtnVal;
}
@Override
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
checkState();
PreparedStatementKey key = new PreparedStatementKey(sql, getCatalog(), MethodType.M6, autoGeneratedKeys);
PreparedStatementHolder stmtHolder = null;
boolean poolPreparedStatements = holder.isPoolPreparedStatements();
if (poolPreparedStatements) {
stmtHolder = holder.getStatementPool().get(key);
}
if (stmtHolder == null) {
try {
stmtHolder = new PreparedStatementHolder(key, conn.prepareStatement(sql, autoGeneratedKeys));
holder.getDataSource().incrementPreparedStatementCount();
} catch (SQLException ex) {
handleException(ex);
}
}
holder.getDataSource().initStatement(this, stmtHolder.getStatement());
DruidPooledPreparedStatement rtnVal = new DruidPooledPreparedStatement(this, stmtHolder);
holder.addTrace(rtnVal);
return rtnVal;
}
// ////////////////////
@Override
public CallableStatement prepareCall(String sql) throws SQLException {
checkState();
PreparedStatementHolder stmtHolder = null;
PreparedStatementKey key = new PreparedStatementKey(sql, getCatalog(), MethodType.Precall_1);
boolean poolPreparedStatements = holder.isPoolPreparedStatements();
if (poolPreparedStatements) {
stmtHolder = holder.getStatementPool().get(key);
}
if (stmtHolder == null) {
try {
stmtHolder = new PreparedStatementHolder(key, conn.prepareCall(sql));
holder.getDataSource().incrementPreparedStatementCount();
} catch (SQLException ex) {
handleException(ex);
}
}
holder.getDataSource().initStatement(this, stmtHolder.getStatement());
DruidPooledCallableStatement rtnVal = new DruidPooledCallableStatement(this, stmtHolder);
holder.addTrace(rtnVal);
return rtnVal;
}
@Override
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency,
int resultSetHoldability) throws SQLException {
checkState();
PreparedStatementHolder stmtHolder = null;
PreparedStatementKey key = new PreparedStatementKey(sql, getCatalog(), MethodType.Precall_2, resultSetType,
resultSetConcurrency, resultSetHoldability);
boolean poolPreparedStatements = holder.isPoolPreparedStatements();
if (poolPreparedStatements) {
stmtHolder = holder.getStatementPool().get(key);
}
if (stmtHolder == null) {
try {
stmtHolder = new PreparedStatementHolder(key, conn.prepareCall(sql, resultSetType,
resultSetConcurrency,
resultSetHoldability));
holder.getDataSource().incrementPreparedStatementCount();
} catch (SQLException ex) {
handleException(ex);
}
}
holder.getDataSource().initStatement(this, stmtHolder.getStatement());
DruidPooledCallableStatement rtnVal = new DruidPooledCallableStatement(this, stmtHolder);
holder.addTrace(rtnVal);
return rtnVal;
}
@Override
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
checkState();
PreparedStatementHolder stmtHolder = null;
PreparedStatementKey key = new PreparedStatementKey(sql, getCatalog(), MethodType.Precall_3, resultSetType,
resultSetConcurrency);
boolean poolPreparedStatements = holder.isPoolPreparedStatements();
if (poolPreparedStatements) {
stmtHolder = holder.getStatementPool().get(key);
}
if (stmtHolder == null) {
try {
stmtHolder = new PreparedStatementHolder(key,
conn.prepareCall(sql, resultSetType, resultSetConcurrency));
holder.getDataSource().incrementPreparedStatementCount();
} catch (SQLException ex) {
handleException(ex);
}
}
holder.getDataSource().initStatement(this, stmtHolder.getStatement());
DruidPooledCallableStatement rtnVal = new DruidPooledCallableStatement(this, stmtHolder);
holder.addTrace(rtnVal);
return rtnVal;
}
// ////////////////////
@Override
public Statement createStatement() throws SQLException {
checkState();
Statement stmt = null;
try {
stmt = conn.createStatement();
} catch (SQLException ex) {
handleException(ex);
}
holder.getDataSource().initStatement(this, stmt);
DruidPooledStatement poolableStatement = new DruidPooledStatement(this, stmt);
holder.addTrace(poolableStatement);
return poolableStatement;
}
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability)
throws SQLException {
checkState();
Statement stmt = null;
try {
stmt = conn.createStatement(resultSetType, resultSetConcurrency, resultSetHoldability);
} catch (SQLException ex) {
handleException(ex);
}
holder.getDataSource().initStatement(this, stmt);
DruidPooledStatement poolableStatement = new DruidPooledStatement(this, stmt);
holder.addTrace(poolableStatement);
return poolableStatement;
}
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
checkState();
Statement stmt = null;
try {
stmt = conn.createStatement(resultSetType, resultSetConcurrency);
} catch (SQLException ex) {
handleException(ex);
}
holder.getDataSource().initStatement(this, stmt);
DruidPooledStatement poolableStatement = new DruidPooledStatement(this, stmt);
holder.addTrace(poolableStatement);
return poolableStatement;
}
// ////////////////////
@SuppressWarnings("unchecked")
@Override
public <T> T unwrap(Class<T> iface) throws SQLException {
if (iface == null) {
return null;
}
if (iface == Connection.class) {
if (conn instanceof ConnectionProxy) {
return conn.unwrap(iface);
}
return (T) conn;
}
if (iface.isInstance(conn)) {
return (T) conn;
}
if (iface.isInstance(this)) {
return (T) this;
}
return conn.unwrap(iface);
}
@Override
public boolean isWrapperFor(Class<?> iface) throws SQLException {
if (iface == null) {
return false;
}
if (iface.isInstance(this)) {
return true;
}
return conn.isWrapperFor(iface);
}
@Override
public String nativeSQL(String sql) throws SQLException {
checkState();
return conn.nativeSQL(sql);
}
@Override
public void setAutoCommit(boolean autoCommit) throws SQLException {
checkState();
try {
conn.setAutoCommit(autoCommit);
holder.setUnderlyingAutoCommit(autoCommit);
} catch (SQLException ex) {
handleException(ex);
}
}
protected void transactionRecord(String sql) throws SQLException {
if (transactionInfo == null && (!conn.getAutoCommit())) {
DruidAbstractDataSource dataSource = holder.getDataSource();
dataSource.incrementStartTransactionCount();
transactionInfo = new TransactionInfo(dataSource.createTransactionId());
}
if (transactionInfo != null) {
transactionInfo.getSqlList().add(sql);
}
}
@Override
public boolean getAutoCommit() throws SQLException {
checkState();
return conn.getAutoCommit();
}
@Override
public void commit() throws SQLException {
checkState();
DruidAbstractDataSource dataSource = holder.getDataSource();
dataSource.incrementCommitCount();
try {
conn.commit();
} catch (SQLException ex) {
handleException(ex);
} finally {
handleEndTransaction(dataSource);
}
}
public TransactionInfo getTransactionInfo() {
return transactionInfo;
}
@Override
public void rollback() throws SQLException {
if (transactionInfo == null) {
return;
}
if (holder == null) {
return;
}
DruidAbstractDataSource dataSource = holder.getDataSource();
dataSource.incrementRollbackCount();
try {
conn.rollback();
} catch (SQLException ex) {
handleException(ex);
} finally {
handleEndTransaction(dataSource);
}
}
@Override
public Savepoint setSavepoint(String name) throws SQLException {
checkState();
return conn.setSavepoint(name);
}
@Override
public void rollback(Savepoint savepoint) throws SQLException {
if (holder == null) {
return;
}
DruidAbstractDataSource dataSource = holder.getDataSource();
dataSource.incrementRollbackCount();
try {
conn.rollback(savepoint);
} catch (SQLException ex) {
handleException(ex);
} finally {
handleEndTransaction(dataSource);
}
}
private void handleEndTransaction(DruidAbstractDataSource dataSource) {
if (transactionInfo != null) {
transactionInfo.setEndTimeMillis();
long transactionMillis = transactionInfo.getEndTimeMillis() - transactionInfo.getStartTimeMillis();
dataSource.getTransactionHistogram().recode(transactionMillis);
dataSource.logTransaction(transactionInfo);
transactionInfo = null;
}
}
@Override
public void releaseSavepoint(Savepoint savepoint) throws SQLException {
checkState();
try {
conn.releaseSavepoint(savepoint);
} catch (SQLException ex) {
handleException(ex);
}
}
@Override
public Clob createClob() throws SQLException {
checkState();
return conn.createClob();
}
@Override
public boolean isClosed() throws SQLException {
if (holder == null) {
return true;
}
return conn.isClosed();
}
@Override
public DatabaseMetaData getMetaData() throws SQLException {
checkState();
return conn.getMetaData();
}
@Override
public void setReadOnly(boolean readOnly) throws SQLException {
checkState();
conn.setReadOnly(readOnly);
holder.setUnderlyingReadOnly(readOnly);
}
@Override
public boolean isReadOnly() throws SQLException {
checkState();
return conn.isReadOnly();
}
@Override
public void setCatalog(String catalog) throws SQLException {
checkState();
conn.setCatalog(catalog);
}
@Override
public String getCatalog() throws SQLException {
checkState();
return conn.getCatalog();
}
@Override
public void setTransactionIsolation(int level) throws SQLException {
checkState();
conn.setTransactionIsolation(level);
holder.setUnderlyingTransactionIsolation(level);
}
@Override
public int getTransactionIsolation() throws SQLException {
checkState();
return conn.getTransactionIsolation();
}
@Override
public SQLWarning getWarnings() throws SQLException {
checkState();
return conn.getWarnings();
}
@Override
public void clearWarnings() throws SQLException {
checkState();
conn.clearWarnings();
}
@Override
public Map<String, Class<?>> getTypeMap() throws SQLException {
checkState();
return conn.getTypeMap();
}
@Override
public void setTypeMap(Map<String, Class<?>> map) throws SQLException {
checkState();
conn.setTypeMap(map);
}
@Override
public void setHoldability(int holdability) throws SQLException {
checkState();
conn.setHoldability(holdability);
holder.setUnderlyingHoldability(holdability);
}
@Override
public int getHoldability() throws SQLException {
checkState();
return conn.getHoldability();
}
@Override
public Savepoint setSavepoint() throws SQLException {
checkState();
return conn.setSavepoint();
}
@Override
public Blob createBlob() throws SQLException {
checkState();
return conn.createBlob();
}
@Override
public NClob createNClob() throws SQLException {
checkState();
return conn.createNClob();
}
@Override
public SQLXML createSQLXML() throws SQLException {
checkState();
return conn.createSQLXML();
}
@Override
public boolean isValid(int timeout) throws SQLException {
checkState();
return conn.isValid(timeout);
}
@Override
public void setClientInfo(String name, String value) throws SQLClientInfoException {
if (holder == null) {
throw new SQLClientInfoException();
}
conn.setClientInfo(name, value);
}
@Override
public void setClientInfo(Properties properties) throws SQLClientInfoException {
if (holder == null) {
throw new SQLClientInfoException();
}
conn.setClientInfo(properties);
}
@Override
public String getClientInfo(String name) throws SQLException {
checkState();
return conn.getClientInfo(name);
}
@Override
public Properties getClientInfo() throws SQLException {
checkState();
return conn.getClientInfo();
}
@Override
public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
checkState();
return conn.createArrayOf(typeName, elements);
}
@Override
public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
checkState();
return conn.createStruct(typeName, attributes);
}
@Override
public void addConnectionEventListener(ConnectionEventListener listener) {
if (holder == null) {
throw new IllegalStateException();
}
holder.getConnectionEventListeners().add(listener);
}
@Override
public void removeConnectionEventListener(ConnectionEventListener listener) {
if (holder == null) {
throw new IllegalStateException();
}
holder.getConnectionEventListeners().remove(listener);
}
@Override
public void addStatementEventListener(StatementEventListener listener) {
if (holder == null) {
throw new IllegalStateException();
}
holder.getStatementEventListeners().add(listener);
}
@Override
public void removeStatementEventListener(StatementEventListener listener) {
if (holder == null) {
throw new IllegalStateException();
}
holder.getStatementEventListeners().remove(listener);
}
public void checkState() throws SQLException {
if (holder == null || closed || diable) {
throw new SQLException("connection is closed");
}
}
public String toString() {
if (conn != null) {
return conn.toString();
} else {
return "closed-conn-" + System.identityHashCode(this);
}
}
public void setSchema(String schema) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
public String getSchema() throws SQLException {
throw new SQLFeatureNotSupportedException();
}
public void abort(Executor executor) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
public int getNetworkTimeout() throws SQLException {
throw new SQLFeatureNotSupportedException();
}
}