org.firebirdsql.pool
Class AbstractPingablePooledConnection

java.lang.Object
  org.firebirdsql.pool.AbstractPingablePooledConnection

All Implemented Interfaces:

PooledConnection, PooledObject, XStatementManager

Direct Known Subclasses:

PingablePooledConnection

public abstract class AbstractPingablePooledConnection
extends Object
implements PooledConnection, PooledObject, XStatementManager

This class implements PooledConnection interface.

Author:

Roman Rokytskyy

Field Summary

protected Connection

jdbcConnection

Constructor Summary

protected	AbstractPingablePooledConnection(Connection connection, boolean statementPooling, int maxStatements, boolean keepStatements)
protected	AbstractPingablePooledConnection(Connection connection, String pingStatement, int pingInterval, boolean statementPooling, int maxStatements, boolean keepStatements)

Method Summary

void	addConnectionEventListener(ConnectionEventListener listener) Add connection listener to be notified about connection events.
void	close() Close this pooled connection.
protected void	configureConnectionDefaults(Connection connection) Configure default values for this connection.
void	connectionClosed(org.firebirdsql.pool.PooledConnectionHandler connection) Notify connection owner about invocation of the Connection.close() operation on PooledConnectionHandler instance.
void	connectionCommitted(org.firebirdsql.pool.PooledConnectionHandler connection) Notify this class that transaction was committed.
void	connectionErrorOccured(org.firebirdsql.pool.PooledConnectionHandler connection, SQLException ex) Notify connection owner about the SQLException that happened during method invocation on the wrapped connection.
void	connectionRolledBack(org.firebirdsql.pool.PooledConnectionHandler connection) Notify this class that transaction was rolled back.
void	deallocate() Deallocate this object.
Connection	getConnection() Get JDBC connection corresponding to this pooled connection instance.
long	getLastPingTime() Get the time when connection was pinged last time.
protected Logger	getLogChannel()
PreparedStatement	getPreparedStatement(String statement, int resultSetType, int resultSetConcurrency) Handle Connection.prepareStatement(String) method call.
protected void	internalClose() Close this connection.
boolean	isInPool() Check whether this object is currently in pool or had been released to the application.
boolean	isKeepStatements()
boolean	isStatementPooling()
boolean	isValid() Check if this pooled connection is still valid.
boolean	isValid(org.firebirdsql.pool.PooledConnectionHandler connection) Check if specified connection is still valid.
boolean	ping() Ping connection by executing a ping statement.
org.firebirdsql.pool.XCachablePreparedStatement	prepareStatement(String statement, int resultSetType, int resultSetConcurrency, boolean cached) Prepare the specified statement and wrap it with cache notification wrapper.
void	removeConnectionEventListener(ConnectionEventListener listener) Remove connection listener from this pooled connection.
void	setDefaultTransactionIsolation(int isolation)
void	setInPool(boolean inPool) Set the "inPool" flag to this object.
void	statementClosed(String statement, Object proxy) Handle Statement.close() method.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.sql.PooledConnection

addStatementEventListener, removeStatementEventListener

Field Detail

jdbcConnection

protected Connection jdbcConnection

Constructor Detail

AbstractPingablePooledConnection

protected AbstractPingablePooledConnection(Connection connection,
                                           boolean statementPooling,
                                           int maxStatements,
                                           boolean keepStatements)
                                    throws SQLException

Throws:

SQLException

AbstractPingablePooledConnection

protected AbstractPingablePooledConnection(Connection connection,
                                           String pingStatement,
                                           int pingInterval,
                                           boolean statementPooling,
                                           int maxStatements,
                                           boolean keepStatements)
                                    throws SQLException

Throws:

SQLException

Method Detail

getLogChannel

protected Logger getLogChannel()

setDefaultTransactionIsolation

public void setDefaultTransactionIsolation(int isolation)

getLastPingTime

public long getLastPingTime()

Get the time when connection was pinged last time.

Returns:

time when connection was pinged last time.

isStatementPooling

public boolean isStatementPooling()

isKeepStatements

public boolean isKeepStatements()

ping

public boolean ping()

Ping connection by executing a ping statement.

Returns:

true if connection was successfully pinged.

isValid

public boolean isValid()

Check if this pooled connection is still valid.

Specified by:

isValid in interface PooledObject

Returns:

true if this pooled connection is still valid.

isInPool

public boolean isInPool()

Check whether this object is currently in pool or had been released to the application.

Specified by:

isInPool in interface PooledObject

Returns:

true if the object is currently in pool.

setInPool

public void setInPool(boolean inPool)

Set the "inPool" flag to this object. This method should be called only by the pool implementation.

Specified by:

setInPool in interface PooledObject

Parameters:

inPool - true if object is in pool, otherwise false.

addConnectionEventListener

public void addConnectionEventListener(ConnectionEventListener listener)

Add connection listener to be notified about connection events.

Specified by:

addConnectionEventListener in interface PooledConnection

Parameters:

listener - listener to add.

removeConnectionEventListener

public void removeConnectionEventListener(ConnectionEventListener listener)

Remove connection listener from this pooled connection.

Specified by:

removeConnectionEventListener in interface PooledConnection

Parameters:

listener - listener to remove.

close

public void close()
           throws SQLException

Close this pooled connection. This operation closes physical connection to the database. Should not be called by applications directly.

Specified by:

close in interface PooledConnection

Throws:

SQLException

internalClose

protected void internalClose()
                      throws SQLException

Close this connection.

Throws:

SQLException - if something went wrong.

deallocate

public void deallocate()

Deallocate this object.

Specified by:

deallocate in interface PooledObject

getConnection

public Connection getConnection()
                         throws SQLException

Get JDBC connection corresponding to this pooled connection instance.

Specified by:

getConnection in interface PooledConnection

Returns:

instance of Connection

Throws:

SQLException - if some error happened.

configureConnectionDefaults

protected void configureConnectionDefaults(Connection connection)
                                    throws SQLException

Configure default values for this connection.

Parameters:

connection - instance of Connection to configure.

Throws:

SQLException - if something went wrong.

getPreparedStatement

public PreparedStatement getPreparedStatement(String statement,
                                              int resultSetType,
                                              int resultSetConcurrency)
                                       throws SQLException

Handle Connection.prepareStatement(String) method call. This method check internal cache first and returns prepared statement if found. Otherwise, it prepares statement and caches it.

Parameters:

statement - statement to prepare.

resultSetType - type of the result set.

resultSetConcurrency - result set concurrency.

Returns:

instance of PreparedStatement corresponding to the statement.

Throws:

SQLException - if there was problem preparing statement.

prepareStatement

public org.firebirdsql.pool.XCachablePreparedStatement prepareStatement(String statement,
                                                                        int resultSetType,
                                                                        int resultSetConcurrency,
                                                                        boolean cached)
                                                                 throws SQLException

Prepare the specified statement and wrap it with cache notification wrapper.

Specified by:

prepareStatement in interface XStatementManager

Parameters:

statement - sattement to prepare.

resultSetType - type of result set

resultSetConcurrency - result set concurrency

cached - true if prepared statement will be cached.

Returns:

prepared and wrapped statement.

Throws:

SQLException - if underlying connection threw this exception.

See Also:

Connection.prepareStatement(java.lang.String, int, int)

statementClosed

public void statementClosed(String statement,
                            Object proxy)
                     throws SQLException

Handle Statement.close() method. This implementation dereferences proxy in cache.

Specified by:

statementClosed in interface XStatementManager

Parameters:

statement - SQL statement corresponding to the proxy.

proxy - proxy wrapping the connection.

Throws:

SQLException - if prepared statement cannot be added to the pool.

connectionClosed

public void connectionClosed(org.firebirdsql.pool.PooledConnectionHandler connection)
                      throws SQLException

Notify connection owner about invocation of the Connection.close() operation on PooledConnectionHandler instance.

Parameters:

connection - instance of PooledConnectionHandler that initiated the call.

Throws:

SQLException

connectionErrorOccured

public void connectionErrorOccured(org.firebirdsql.pool.PooledConnectionHandler connection,
                                   SQLException ex)

Notify connection owner about the SQLException that happened during method invocation on the wrapped connection.

Parameters:

connection - instance of PooledConnectionHandler that catched exception.

ex - instance of SQLException that was thrown.

isValid

public boolean isValid(org.firebirdsql.pool.PooledConnectionHandler connection)

Check if specified connection is still valid.

Parameters:

connection - instance of PooledConnectionHandler to check.

Returns:

true if connection owner is still valid, false otherwise.

connectionCommitted

public void connectionCommitted(org.firebirdsql.pool.PooledConnectionHandler connection)
                         throws SQLException

Notify this class that transaction was committed.

Parameters:

connection - connection that was commited.

Throws:

SQLException

See Also:

XConnectionManager.connectionCommitted(PooledConnectionHandler)

connectionRolledBack

public void connectionRolledBack(org.firebirdsql.pool.PooledConnectionHandler connection)
                          throws SQLException

Notify this class that transaction was rolled back.

Parameters:

connection - connection that was commited.

Throws:

SQLException

See Also:

XConnectionManager.connectionRolledBack(PooledConnectionHandler)