| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.commons.dbcp2; |
| |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.commons.pool2.KeyedObjectPool; |
| |
| /** |
| * A {@link DelegatingPreparedStatement} that cooperates with {@link PoolingConnection} to implement a pool of |
| * {@link PreparedStatement}s. |
| * <p> |
| * My {@link #close} method returns me to my containing pool. (See {@link PoolingConnection}.) |
| * </p> |
| * |
| * @param <K> |
| * the key type |
| * |
| * @see PoolingConnection |
| * @since 2.0 |
| */ |
| public class PoolablePreparedStatement<K> extends DelegatingPreparedStatement { |
| |
| /** |
| * The {@link KeyedObjectPool} from which I was obtained. |
| */ |
| private final KeyedObjectPool<K, PoolablePreparedStatement<K>> pool; |
| |
| /** |
| * My "key" as used by {@link KeyedObjectPool}. |
| */ |
| private final K key; |
| |
| private volatile boolean batchAdded = false; |
| |
| /** |
| * Constructor. |
| * |
| * @param stmt |
| * my underlying {@link PreparedStatement} |
| * @param key |
| * my key" as used by {@link KeyedObjectPool} |
| * @param pool |
| * the {@link KeyedObjectPool} from which I was obtained. |
| * @param conn |
| * the {@link java.sql.Connection Connection} from which I was created |
| */ |
| public PoolablePreparedStatement(final PreparedStatement stmt, final K key, |
| final KeyedObjectPool<K, PoolablePreparedStatement<K>> pool, final DelegatingConnection<?> conn) { |
| super(conn, stmt); |
| this.pool = pool; |
| this.key = key; |
| |
| // Remove from trace now because this statement will be |
| // added by the activate method. |
| removeThisTrace(getConnectionInternal()); |
| } |
| |
| /** |
| * Add batch. |
| */ |
| @Override |
| public void addBatch() throws SQLException { |
| super.addBatch(); |
| batchAdded = true; |
| } |
| |
| /** |
| * Clear Batch. |
| */ |
| @Override |
| public void clearBatch() throws SQLException { |
| batchAdded = false; |
| super.clearBatch(); |
| } |
| |
| /** |
| * Return me to my pool. |
| */ |
| @Override |
| public void close() throws SQLException { |
| // calling close twice should have no effect |
| if (!isClosed()) { |
| try { |
| pool.returnObject(key, this); |
| } catch (final SQLException e) { |
| throw e; |
| } catch (final RuntimeException e) { |
| throw e; |
| } catch (final Exception e) { |
| throw new SQLException("Cannot close preparedstatement (return to pool failed)", e); |
| } |
| } |
| } |
| |
| @Override |
| public void activate() throws SQLException { |
| setClosedInternal(false); |
| if (getConnectionInternal() != null) { |
| getConnectionInternal().addTrace(this); |
| } |
| super.activate(); |
| } |
| |
| @Override |
| public void passivate() throws SQLException { |
| // DBCP-372. clearBatch with throw an exception if called when the |
| // connection is marked as closed. |
| if (batchAdded) { |
| clearBatch(); |
| } |
| setClosedInternal(true); |
| removeThisTrace(getConnectionInternal()); |
| |
| // The JDBC spec requires that a statement closes any open |
| // ResultSet's when it is closed. |
| // FIXME The PreparedStatement we're wrapping should handle this for us. |
| // See bug 17301 for what could happen when ResultSets are closed twice. |
| final List<AbandonedTrace> resultSetList = getTrace(); |
| if (resultSetList != null) { |
| final List<Exception> thrown = new ArrayList<>(); |
| final ResultSet[] resultSets = resultSetList.toArray(new ResultSet[resultSetList.size()]); |
| for (final ResultSet resultSet : resultSets) { |
| if (resultSet != null) { |
| try { |
| resultSet.close(); |
| } catch (Exception e) { |
| thrown.add(e); |
| } |
| } |
| } |
| clearTrace(); |
| if (!thrown.isEmpty()) { |
| throw new SQLExceptionList(thrown); |
| } |
| } |
| |
| super.passivate(); |
| } |
| } |