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/*
* Copyright (C) 2013 Brett Wooldridge
*
* 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.zaxxer.hikari.pool;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Wrapper;
/**
* This is the proxy class for java.sql.Statement.
*
* @author Brett Wooldridge
*/
public abstract class ProxyStatement implements Statement
{
protected final ProxyConnection connection;
protected final Statement delegate;
private boolean isClosed;
private ResultSet proxyResultSet;
protected ProxyStatement(ProxyConnection connection, Statement statement)
{
this.connection = connection;
this.delegate = statement;
}
final SQLException checkException(SQLException e)
{
return connection.checkException(e);
}
/** {@inheritDoc} */
@Override
public final String toString()
{
final String delegateToString = delegate.toString();
return new StringBuilder(64 + delegateToString.length())
.append(this.getClass().getSimpleName()).append('@').append(System.identityHashCode(this))
.append(" wrapping ")
.append(delegateToString).toString();
}
// **********************************************************************
// Overridden java.sql.Statement Methods
// **********************************************************************
/** {@inheritDoc} */
@Override
public final void close() throws SQLException
{
if (isClosed) {
return;
}
isClosed = true;
connection.untrackStatement(delegate);
try {
delegate.close();
}
catch (SQLException e) {
throw connection.checkException(e);
}
}
/** {@inheritDoc} */
@Override
public Connection getConnection() throws SQLException
{
return connection;
}
/** {@inheritDoc} */
@Override
public boolean execute(String sql) throws SQLException
{
connection.markCommitStateDirty();
return delegate.execute(sql);
}
/** {@inheritDoc} */
@Override
public boolean execute(String sql, int autoGeneratedKeys) throws SQLException
{
connection.markCommitStateDirty();
return delegate.execute(sql, autoGeneratedKeys);
}
/** {@inheritDoc} */
@Override
public ResultSet executeQuery(String sql) throws SQLException
{
connection.markCommitStateDirty();
ResultSet resultSet = delegate.executeQuery(sql);
return ProxyFactory.getProxyResultSet(connection, this, resultSet);
}
/** {@inheritDoc} */
@Override
public int executeUpdate(String sql) throws SQLException
{
connection.markCommitStateDirty();
return delegate.executeUpdate(sql);
}
/** {@inheritDoc} */
@Override
public int[] executeBatch() throws SQLException
{
connection.markCommitStateDirty();
return delegate.executeBatch();
}
/** {@inheritDoc} */
@Override
public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException
{
connection.markCommitStateDirty();
return delegate.executeUpdate(sql, autoGeneratedKeys);
}
/** {@inheritDoc} */
@Override
public int executeUpdate(String sql, int[] columnIndexes) throws SQLException
{
connection.markCommitStateDirty();
return delegate.executeUpdate(sql, columnIndexes);
}
/** {@inheritDoc} */
@Override
public int executeUpdate(String sql, String[] columnNames) throws SQLException
{
connection.markCommitStateDirty();
return delegate.executeUpdate(sql, columnNames);
}
/** {@inheritDoc} */
@Override
public boolean execute(String sql, int[] columnIndexes) throws SQLException
{
connection.markCommitStateDirty();
return delegate.execute(sql, columnIndexes);
}
/** {@inheritDoc} */
@Override
public boolean execute(String sql, String[] columnNames) throws SQLException
{
connection.markCommitStateDirty();
return delegate.execute(sql, columnNames);
}
/** {@inheritDoc} */
@Override
public long[] executeLargeBatch() throws SQLException
{
connection.markCommitStateDirty();
return delegate.executeLargeBatch();
}
/** {@inheritDoc} */
@Override
public long executeLargeUpdate(String sql) throws SQLException
{
connection.markCommitStateDirty();
return delegate.executeLargeUpdate(sql);
}
/** {@inheritDoc} */
@Override
public long executeLargeUpdate(String sql, int autoGeneratedKeys) throws SQLException
{
connection.markCommitStateDirty();
return delegate.executeLargeUpdate(sql, autoGeneratedKeys);
}
/** {@inheritDoc} */
@Override
public long executeLargeUpdate(String sql, int[] columnIndexes) throws SQLException
{
connection.markCommitStateDirty();
return delegate.executeLargeUpdate(sql, columnIndexes);
}
/** {@inheritDoc} */
@Override
public long executeLargeUpdate(String sql, String[] columnNames) throws SQLException
{
connection.markCommitStateDirty();
return delegate.executeLargeUpdate(sql, columnNames);
}
/** {@inheritDoc} */
@Override
public ResultSet getResultSet() throws SQLException {
final ResultSet resultSet = delegate.getResultSet();
if (resultSet != null) {
if (proxyResultSet == null || ((ProxyResultSet) proxyResultSet).delegate != resultSet) {
proxyResultSet = ProxyFactory.getProxyResultSet(connection, this, resultSet);
}
}
else {
proxyResultSet = null;
}
return proxyResultSet;
}
/** {@inheritDoc} */
@Override
@SuppressWarnings("unchecked")
public final <T> T unwrap(Class<T> iface) throws SQLException
{
if (iface.isInstance(delegate)) {
return (T) delegate;
}
else if (delegate instanceof Wrapper) {
return delegate.unwrap(iface);
}
throw new SQLException("Wrapped statement is not an instance of " + iface);
}
}
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