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Java Source Code / Java Documentation » Database JDBC Connection Pool » Connection Pool DBCP » org.apache.commons.dbcp

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.apache.commons.dbcp .AbandonedTrace

org.apache.commons.dbcp .DelegatingConnection

org.apache.commons.dbcp .PoolingConnection

PoolingConnection
public class PoolingConnection extends DelegatingConnection implements Connection,KeyedPoolableObjectFactory(Code)
	A DelegatingConnection that pools PreparedStatement s. My PoolingConnection.prepareStatement methods, rather than creating a new PreparedStatement each time, may actually pull the PreparedStatement from a pool of unused statements. The PreparedStatement.close method of the returned PreparedStatement doesn't actually close the statement, but rather returns it to my pool. (See PoolablePreparedStatement .) See Also: PoolablePreparedStatement author: Rodney Waldhoff author: Dirk Verbeeck version: $Revision: 498524 $ $Date: 2007-01-21 21:44:45 -0700 (Sun, 21 Jan 2007) $

Inner Class :class PStmtKey

Field Summary
protected KeyedObjectPool	_pstmtPool My pool of PreparedStatement s.

Constructor Summary
public	PoolingConnection(Connection c) Constructor.
public	PoolingConnection(Connection c, KeyedObjectPool pool) Constructor.

Method Summary
public void	activateObject(Object key, Object obj) My KeyedPoolableObjectFactory method for activating PreparedStatement s.
public synchronized void	close() Close and free all PreparedStatement s from my pool, and close my underlying connection.
protected Object	createKey(String sql, int resultSetType, int resultSetConcurrency) Create a PStmtKey for the given arguments.
protected Object	createKey(String sql) Create a PStmtKey for the given arguments.
public void	destroyObject(Object key, Object obj) My KeyedPoolableObjectFactory method for destroying PreparedStatement s.
public Object	makeObject(Object obj) My KeyedPoolableObjectFactory method for creating PreparedStatement s.
protected String	normalizeSQL(String sql) Normalize the given SQL statement, producing a cannonical form that is semantically equivalent to the original.
public void	passivateObject(Object key, Object obj) My KeyedPoolableObjectFactory method for passivating PreparedStatement s.
public PreparedStatement	prepareStatement(String sql) Create or obtain a PreparedStatement from my pool.
public PreparedStatement	prepareStatement(String sql, int resultSetType, int resultSetConcurrency) Create or obtain a PreparedStatement from my pool.
public String	toString()
public boolean	validateObject(Object key, Object obj) My KeyedPoolableObjectFactory method for validating PreparedStatement s.

Field Detail

_pstmtPool
protected KeyedObjectPool _pstmtPool(Code)
	My pool of PreparedStatement s.

Constructor Detail

PoolingConnection
public PoolingConnection(Connection c)(Code)
	Constructor. Parameters: c - the underlying Connection.

PoolingConnection
public PoolingConnection(Connection c, KeyedObjectPool pool)(Code)
	Constructor. Parameters: c - the underlying Connection. Parameters: pool - KeyedObjectPool of PreparedStatements

Method Detail

activateObject
public void activateObject(Object key, Object obj) throws Exception(Code)
	My KeyedPoolableObjectFactory method for activating PreparedStatement s. (Currently a no-op.) Parameters: key - ignored Parameters: obj - ignored

close
public synchronized void close() throws SQLException(Code)
	Close and free all PreparedStatement s from my pool, and close my underlying connection.

createKey
protected Object createKey(String sql, int resultSetType, int resultSetConcurrency)(Code)
	Create a PStmtKey for the given arguments.

createKey
protected Object createKey(String sql)(Code)
	Create a PStmtKey for the given arguments.

destroyObject
public void destroyObject(Object key, Object obj) throws Exception(Code)
	My KeyedPoolableObjectFactory method for destroying PreparedStatement s. Parameters: key - ignored Parameters: obj - the PreparedStatement to be destroyed.

makeObject
public Object makeObject(Object obj) throws Exception(Code)
	My KeyedPoolableObjectFactory method for creating PreparedStatement s. Parameters: obj - the key for the PreparedStatement to be created

normalizeSQL
protected String normalizeSQL(String sql)(Code)
	Normalize the given SQL statement, producing a cannonical form that is semantically equivalent to the original.

passivateObject
public void passivateObject(Object key, Object obj) throws Exception(Code)
	My KeyedPoolableObjectFactory method for passivating PreparedStatement s. Currently invokes PreparedStatement.clearParameters . Parameters: key - ignored Parameters: obj - a PreparedStatement

prepareStatement
public PreparedStatement prepareStatement(String sql) throws SQLException(Code)
	Create or obtain a PreparedStatement from my pool. a PoolablePreparedStatement

prepareStatement
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException(Code)
	Create or obtain a PreparedStatement from my pool. a PoolablePreparedStatement

toString
public String toString()(Code)

validateObject
public boolean validateObject(Object key, Object obj)(Code)
	My KeyedPoolableObjectFactory method for validating PreparedStatement s. Parameters: key - ignored Parameters: obj - ignored `true`

Fields inherited from org.apache.commons.dbcp.DelegatingConnection

protected boolean _closed(Code)(Java Doc)
protected Connection _conn(Code)(Java Doc)

Methods inherited from org.apache.commons.dbcp.DelegatingConnection

protected void activate()(Code)(Java Doc)
protected void checkOpen() throws SQLException(Code)(Java Doc)
public void clearWarnings() throws SQLException(Code)(Java Doc)
public void close() throws SQLException(Code)(Java Doc)
public void commit() throws SQLException(Code)(Java Doc)
public Statement createStatement() throws SQLException(Code)(Java Doc)
public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException(Code)(Java Doc)
public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
public boolean getAutoCommit() throws SQLException(Code)(Java Doc)
public String getCatalog() throws SQLException(Code)(Java Doc)
public Connection getDelegate()(Code)(Java Doc)
public int getHoldability() throws SQLException(Code)(Java Doc)
public Connection getInnermostDelegate()(Code)(Java Doc)
public DatabaseMetaData getMetaData() throws SQLException(Code)(Java Doc)
public int getTransactionIsolation() throws SQLException(Code)(Java Doc)
public Map getTypeMap() throws SQLException(Code)(Java Doc)
public SQLWarning getWarnings() throws SQLException(Code)(Java Doc)
protected void handleException(SQLException e) throws SQLException(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
public boolean innermostDelegateEquals(Connection c)(Code)(Java Doc)
public boolean isClosed() throws SQLException(Code)(Java Doc)
public boolean isReadOnly() throws SQLException(Code)(Java Doc)
public String nativeSQL(String sql) throws SQLException(Code)(Java Doc)
protected void passivate() throws SQLException(Code)(Java Doc)
public CallableStatement prepareCall(String sql) throws SQLException(Code)(Java Doc)
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException(Code)(Java Doc)
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException(Code)(Java Doc)
public PreparedStatement prepareStatement(String sql) throws SQLException(Code)(Java Doc)
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException(Code)(Java Doc)
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException(Code)(Java Doc)
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException(Code)(Java Doc)
public PreparedStatement prepareStatement(String sql, int columnIndexes) throws SQLException(Code)(Java Doc)
public PreparedStatement prepareStatement(String sql, String columnNames) throws SQLException(Code)(Java Doc)
public void releaseSavepoint(java.sql.Savepoint savepoint) throws SQLException(Code)(Java Doc)
public void rollback() throws SQLException(Code)(Java Doc)
public void rollback(java.sql.Savepoint savepoint) throws SQLException(Code)(Java Doc)
public void setAutoCommit(boolean autoCommit) throws SQLException(Code)(Java Doc)
public void setCatalog(String catalog) throws SQLException(Code)(Java Doc)
public void setDelegate(Connection c)(Code)(Java Doc)
public void setHoldability(int holdability) throws SQLException(Code)(Java Doc)
public void setReadOnly(boolean readOnly) throws SQLException(Code)(Java Doc)
public java.sql.Savepoint setSavepoint() throws SQLException(Code)(Java Doc)
public java.sql.Savepoint setSavepoint(String name) throws SQLException(Code)(Java Doc)
public void setTransactionIsolation(int level) throws SQLException(Code)(Java Doc)
public void setTypeMap(Map map) throws SQLException(Code)(Java Doc)
public String toString()(Code)(Java Doc)

Methods inherited from org.apache.commons.dbcp.AbandonedTrace

protected void addTrace(AbandonedTrace trace)(Code)(Java Doc)
protected synchronized void clearTrace()(Code)(Java Doc)
protected AbandonedConfig getConfig()(Code)(Java Doc)
protected long getLastUsed()(Code)(Java Doc)
protected List getTrace()(Code)(Java Doc)
public void printStackTrace()(Code)(Java Doc)
protected synchronized void removeTrace(AbandonedTrace trace)(Code)(Java Doc)
protected void setLastUsed()(Code)(Java Doc)
protected void setLastUsed(long time)(Code)(Java Doc)
protected void setStackTrace()(Code)(Java Doc)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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