bitronix.tm.resource.jdbc.JdbcConnectionHandle Maven / Gradle / Ivy
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/*
* Bitronix Transaction Manager
*
* Copyright (c) 2010, Bitronix Software.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package bitronix.tm.resource.jdbc;
import bitronix.tm.resource.common.TransactionContextHelper;
import bitronix.tm.utils.ClassLoaderUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.transaction.RollbackException;
import javax.transaction.SystemException;
import java.lang.reflect.Proxy;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Savepoint;
import java.sql.Statement;
/**
* Disposable Connection handle.
*
* @author lorban, brettw
*/
public class JdbcConnectionHandle extends BaseProxyHandlerClass { // implements Connection
private final static Logger log = LoggerFactory.getLogger(JdbcConnectionHandle.class);
private final JdbcPooledConnection jdbcPooledConnection;
private final Connection delegate;
private volatile boolean closed = false;
public JdbcConnectionHandle(JdbcPooledConnection jdbcPooledConnection, Connection connection) {
this.jdbcPooledConnection = jdbcPooledConnection;
this.delegate = connection;
}
public JdbcPooledConnection getPooledConnection() {
return jdbcPooledConnection;
}
private Connection getDelegate() throws SQLException {
if (closed)
throw new SQLException("connection is closed");
return delegate;
}
public Connection getConnection() {
return delegate;
}
public String toString() {
return "a JdbcConnectionHandle of " + jdbcPooledConnection + " on " + delegate;
}
/**
* Enlist this connection into the current transaction if automaticEnlistingEnabled = true for this resource.
* If no transaction is running then this method does nothing.
* @throws SQLException thrown when an error occurs during elistment.
*/
private void enlistResource() throws SQLException {
if (closed)
throw new SQLException("connection handle already closed");
if (jdbcPooledConnection.getPoolingDataSource().getAutomaticEnlistingEnabled()) {
try {
TransactionContextHelper.enlistInCurrentTransaction(jdbcPooledConnection);
} catch (SystemException ex) {
throw (SQLException) new SQLException("error enlisting " + this).initCause(ex);
} catch (RollbackException ex) {
throw (SQLException) new SQLException("error enlisting " + this).initCause(ex);
}
} // if getAutomaticEnlistingEnabled
}
/* Overridden methods of java.sql.Connection */
public void close() throws SQLException {
if (log.isDebugEnabled()) log.debug("closing " + this);
// in case the connection has already been closed
if (closed)
return;
jdbcPooledConnection.release();
closed = true;
}
public void commit() throws SQLException {
if (closed)
throw new SQLException("connection handle already closed");
if (jdbcPooledConnection.isParticipatingInActiveGlobalTransaction())
throw new SQLException("cannot commit a resource enlisted in a global transaction");
getDelegate().commit();
}
public void rollback() throws SQLException {
if (closed)
throw new SQLException("connection handle already closed");
if (jdbcPooledConnection.isParticipatingInActiveGlobalTransaction())
throw new SQLException("cannot rollback a resource enlisted in a global transaction");
getDelegate().rollback();
}
public void rollback(Savepoint savepoint) throws SQLException {
if (closed)
throw new SQLException("connection handle already closed");
if (jdbcPooledConnection.isParticipatingInActiveGlobalTransaction())
throw new SQLException("cannot rollback a resource enlisted in a global transaction");
getDelegate().rollback(savepoint);
}
public Savepoint setSavepoint() throws SQLException {
if (closed)
throw new SQLException("connection handle already closed");
if (jdbcPooledConnection.isParticipatingInActiveGlobalTransaction())
throw new SQLException("cannot set a savepoint on a resource enlisted in a global transaction");
return getDelegate().setSavepoint();
}
public Savepoint setSavepoint(String name) throws SQLException {
if (closed)
throw new SQLException("connection handle already closed");
if (jdbcPooledConnection.isParticipatingInActiveGlobalTransaction())
throw new SQLException("cannot set a savepoint on a resource enlisted in a global transaction");
return getDelegate().setSavepoint(name);
}
public void releaseSavepoint(Savepoint savepoint) throws SQLException {
if (closed)
throw new SQLException("connection handle already closed");
if (jdbcPooledConnection.isParticipatingInActiveGlobalTransaction())
throw new SQLException("cannot release a savepoint on a resource enlisted in a global transaction");
getDelegate().releaseSavepoint(savepoint);
}
public boolean getAutoCommit() throws SQLException {
if (closed)
throw new SQLException("connection handle already closed");
if (jdbcPooledConnection.isParticipatingInActiveGlobalTransaction())
return false;
return getDelegate().getAutoCommit();
}
public void setAutoCommit(boolean autoCommit) throws SQLException {
if (closed)
throw new SQLException("connection handle already closed");
if (!jdbcPooledConnection.isParticipatingInActiveGlobalTransaction())
getDelegate().setAutoCommit(autoCommit);
else if (autoCommit)
throw new SQLException("autocommit is not allowed on a resource enlisted in a global transaction");
}
public boolean isClosed() throws SQLException {
return closed || getDelegate().isClosed();
}
public Statement createStatement() throws SQLException {
enlistResource();
Statement statement = getDelegate().createStatement();
jdbcPooledConnection.registerUncachedStatement(statement);
JdbcStatementHandle statementHandle = new JdbcStatementHandle(statement, jdbcPooledConnection);
return (Statement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{Statement.class}, statementHandle);
}
public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
enlistResource();
Statement statement = getDelegate().createStatement(resultSetType, resultSetConcurrency);
jdbcPooledConnection.registerUncachedStatement(statement);
JdbcStatementHandle statementHandle = new JdbcStatementHandle(statement, jdbcPooledConnection);
return (Statement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{Statement.class}, statementHandle);
}
public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
enlistResource();
Statement statement = getDelegate().createStatement(resultSetType, resultSetConcurrency, resultSetHoldability);
jdbcPooledConnection.registerUncachedStatement(statement);
JdbcStatementHandle statementHandle = new JdbcStatementHandle(statement, jdbcPooledConnection);
return (Statement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{Statement.class}, statementHandle);
}
public CallableStatement prepareCall(String sql) throws SQLException {
enlistResource();
CallableStatement statement = getDelegate().prepareCall(sql);
jdbcPooledConnection.registerUncachedStatement(statement);
JdbcCallableStatementHandle statementHandle = new JdbcCallableStatementHandle(statement, jdbcPooledConnection);
return (CallableStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{CallableStatement.class}, statementHandle);
}
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
enlistResource();
CallableStatement statement = getDelegate().prepareCall(sql, resultSetType, resultSetConcurrency);
jdbcPooledConnection.registerUncachedStatement(statement);
JdbcCallableStatementHandle statementHandle = new JdbcCallableStatementHandle(statement, jdbcPooledConnection);
return (CallableStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{CallableStatement.class}, statementHandle);
}
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
enlistResource();
CallableStatement statement = getDelegate().prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
jdbcPooledConnection.registerUncachedStatement(statement);
JdbcCallableStatementHandle statementHandle = new JdbcCallableStatementHandle(statement, jdbcPooledConnection);
return (CallableStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{CallableStatement.class}, statementHandle);
}
/* PreparedStatement cache aware methods */
public PreparedStatement prepareStatement(String sql) throws SQLException {
enlistResource();
boolean useStatementCache = getPooledConnection().getPoolingDataSource().getPreparedStatementCacheSize() > 0;
if (useStatementCache) {
JdbcPreparedStatementHandle proposedStmt = new JdbcPreparedStatementHandle(sql);
JdbcPreparedStatementHandle cachedStmt = getPooledConnection().getCachedStatement(proposedStmt);
if (cachedStmt == null) {
PreparedStatement stmt = getDelegate().prepareStatement(sql);
proposedStmt.setDelegate(stmt);
cachedStmt = getPooledConnection().putCachedStatement(proposedStmt);
}
cachedStmt.setPooledConnection(getPooledConnection());
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, cachedStmt);
}
else {
PreparedStatement stmt = getDelegate().prepareStatement(sql);
jdbcPooledConnection.registerUncachedStatement(stmt);
JdbcUncachedPreparedStatementHandle statementHandle = new JdbcUncachedPreparedStatementHandle(stmt, jdbcPooledConnection);
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, statementHandle);
}
}
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
enlistResource();
boolean useStatementCache = getPooledConnection().getPoolingDataSource().getPreparedStatementCacheSize() > 0;
if (useStatementCache) {
JdbcPreparedStatementHandle proposedStmt = new JdbcPreparedStatementHandle(sql, autoGeneratedKeys);
JdbcPreparedStatementHandle cachedStmt = getPooledConnection().getCachedStatement(proposedStmt);
if (cachedStmt == null) {
PreparedStatement stmt = getDelegate().prepareStatement(sql, autoGeneratedKeys);
proposedStmt.setDelegate(stmt);
cachedStmt = getPooledConnection().putCachedStatement(proposedStmt);
}
cachedStmt.setPooledConnection(getPooledConnection());
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, cachedStmt);
}
else {
PreparedStatement stmt = getDelegate().prepareStatement(sql, autoGeneratedKeys);
jdbcPooledConnection.registerUncachedStatement(stmt);
JdbcUncachedPreparedStatementHandle statementHandle = new JdbcUncachedPreparedStatementHandle(stmt, jdbcPooledConnection);
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, statementHandle);
}
}
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
enlistResource();
boolean useStatementCache = getPooledConnection().getPoolingDataSource().getPreparedStatementCacheSize() > 0;
if (useStatementCache) {
JdbcPreparedStatementHandle proposedStmt = new JdbcPreparedStatementHandle(sql, resultSetType, resultSetConcurrency);
JdbcPreparedStatementHandle cachedStmt = getPooledConnection().getCachedStatement(proposedStmt);
if (cachedStmt == null) {
PreparedStatement stmt = getDelegate().prepareStatement(sql, resultSetType, resultSetConcurrency);
proposedStmt.setDelegate(stmt);
cachedStmt = getPooledConnection().putCachedStatement(proposedStmt);
}
cachedStmt.setPooledConnection(getPooledConnection());
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, cachedStmt);
}
else {
PreparedStatement stmt = getDelegate().prepareStatement(sql, resultSetType, resultSetConcurrency);
jdbcPooledConnection.registerUncachedStatement(stmt);
JdbcUncachedPreparedStatementHandle statementHandle = new JdbcUncachedPreparedStatementHandle(stmt, jdbcPooledConnection);
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, statementHandle);
}
}
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
enlistResource();
boolean useStatementCache = getPooledConnection().getPoolingDataSource().getPreparedStatementCacheSize() > 0;
if (useStatementCache) {
JdbcPreparedStatementHandle proposedStmt = new JdbcPreparedStatementHandle(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
JdbcPreparedStatementHandle cachedStmt = getPooledConnection().getCachedStatement(proposedStmt);
if (cachedStmt == null) {
PreparedStatement stmt = getDelegate().prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
proposedStmt.setDelegate(stmt);
cachedStmt = getPooledConnection().putCachedStatement(proposedStmt);
}
cachedStmt.setPooledConnection(getPooledConnection());
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, cachedStmt);
}
else {
PreparedStatement stmt = getDelegate().prepareStatement(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
jdbcPooledConnection.registerUncachedStatement(stmt);
JdbcUncachedPreparedStatementHandle statementHandle = new JdbcUncachedPreparedStatementHandle(stmt, jdbcPooledConnection);
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, statementHandle);
}
}
public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
enlistResource();
boolean useStatementCache = getPooledConnection().getPoolingDataSource().getPreparedStatementCacheSize() > 0;
if (useStatementCache) {
JdbcPreparedStatementHandle proposedStmt = new JdbcPreparedStatementHandle(sql, columnIndexes);
JdbcPreparedStatementHandle cachedStmt = getPooledConnection().getCachedStatement(proposedStmt);
if (cachedStmt == null) {
PreparedStatement stmt = getDelegate().prepareStatement(sql, columnIndexes);
proposedStmt.setDelegate(stmt);
cachedStmt = getPooledConnection().putCachedStatement(proposedStmt);
}
cachedStmt.setPooledConnection(getPooledConnection());
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, cachedStmt);
}
else {
PreparedStatement stmt = getDelegate().prepareStatement(sql, columnIndexes);
jdbcPooledConnection.registerUncachedStatement(stmt);
JdbcUncachedPreparedStatementHandle statementHandle = new JdbcUncachedPreparedStatementHandle(stmt, jdbcPooledConnection);
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, statementHandle);
}
}
public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
enlistResource();
boolean useStatementCache = getPooledConnection().getPoolingDataSource().getPreparedStatementCacheSize() > 0;
if (useStatementCache) {
JdbcPreparedStatementHandle proposedStmt = new JdbcPreparedStatementHandle(sql, columnNames);
JdbcPreparedStatementHandle cachedStmt = getPooledConnection().getCachedStatement(proposedStmt);
if (cachedStmt == null) {
PreparedStatement stmt = getDelegate().prepareStatement(sql, columnNames);
proposedStmt.setDelegate(stmt);
cachedStmt = getPooledConnection().putCachedStatement(proposedStmt);
}
cachedStmt.setPooledConnection(getPooledConnection());
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, cachedStmt);
}
else {
PreparedStatement stmt = getDelegate().prepareStatement(sql, columnNames);
jdbcPooledConnection.registerUncachedStatement(stmt);
JdbcUncachedPreparedStatementHandle statementHandle = new JdbcUncachedPreparedStatementHandle(stmt, jdbcPooledConnection);
return (PreparedStatement) Proxy.newProxyInstance(ClassLoaderUtils.getClassLoader(), new Class[]{PreparedStatement.class}, statementHandle);
}
}
/* java.sql.Wrapper implementation */
public boolean isWrapperFor(Class iface) throws SQLException {
return iface.isAssignableFrom(delegate.getClass());
}
public T unwrap(Class iface) throws SQLException {
if (iface.isAssignableFrom(delegate.getClass())) {
return (T) delegate;
}
throw new SQLException(getClass().getName() + " is not a wrapper for " + iface);
}
/* BaseProxyHandler implementation */
public Object getProxiedDelegate() throws Exception {
return delegate;
}
}