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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

All known Subclasses:   org.apache.commons.dbcp.PoolableConnection,  org.apache.commons.dbcp.PoolingConnection,
DelegatingConnection
public class DelegatingConnection extends AbandonedTrace implements Connection(Code)
A base delegating implementation of Connection .

All of the methods from the Connection interface simply check to see that the Connection is active, and call the corresponding method on the "delegate" provided in my constructor.

Extends AbandonedTrace to implement Connection tracking and logging of code which created the Connection. Tracking the Connection ensures that the AbandonedObjectPool can close this connection and recycle it if its pool of connections is nearing exhaustion and this connection's last usage is older than the removeAbandonedTimeout.
author:
   Rodney Waldhoff
author:
   Glenn L. Nielsen
author:
   James House
author:
   Dirk Verbeeck
version:
   $Revision: 500687 $ $Date: 2007-01-27 16:33:47 -0700 (Sat, 27 Jan 2007) $



Field Summary
protected  boolean_closed
    
protected  Connection_conn
     My delegate Connection .

Constructor Summary
public  DelegatingConnection(Connection c)
     Create a wrapper for the Connectin which traces this Connection in the AbandonedObjectPool.
public  DelegatingConnection(Connection c, AbandonedConfig config)
     Create a wrapper for the Connection which traces the Statements created so that any unclosed Statements can be closed when this Connection is closed.

Method Summary
protected  voidactivate()
    
protected  voidcheckOpen()
    
public  voidclearWarnings()
    
public  voidclose()
     Closes the underlying connection, and close any Statements that were not explicitly closed.
public  voidcommit()
    
public  StatementcreateStatement()
    
public  StatementcreateStatement(int resultSetType, int resultSetConcurrency)
    
public  StatementcreateStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability)
    
public  booleanequals(Object obj)
    
public  booleangetAutoCommit()
    
public  StringgetCatalog()
    
public  ConnectiongetDelegate()
     Returns my underlying Connection .
public  intgetHoldability()
    
public  ConnectiongetInnermostDelegate()
     If my underlying Connection is not a DelegatingConnection, returns it, otherwise recursively invokes this method on my delegate.
public  DatabaseMetaDatagetMetaData()
    
public  intgetTransactionIsolation()
    
public  MapgetTypeMap()
    
public  SQLWarninggetWarnings()
    
protected  voidhandleException(SQLException e)
    
public  inthashCode()
    
public  booleaninnermostDelegateEquals(Connection c)
     Compares innermost delegate to the given connection.
public  booleanisClosed()
    
public  booleanisReadOnly()
    
public  StringnativeSQL(String sql)
    
protected  voidpassivate()
    
public  CallableStatementprepareCall(String sql)
    
public  CallableStatementprepareCall(String sql, int resultSetType, int resultSetConcurrency)
    
public  CallableStatementprepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
    
public  PreparedStatementprepareStatement(String sql)
    
public  PreparedStatementprepareStatement(String sql, int resultSetType, int resultSetConcurrency)
    
public  PreparedStatementprepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
    
public  PreparedStatementprepareStatement(String sql, int autoGeneratedKeys)
    
public  PreparedStatementprepareStatement(String sql, int columnIndexes)
    
public  PreparedStatementprepareStatement(String sql, String columnNames)
    
public  voidreleaseSavepoint(java.sql.Savepoint savepoint)
    
public  voidrollback()
    
public  voidrollback(java.sql.Savepoint savepoint)
    
public  voidsetAutoCommit(boolean autoCommit)
    
public  voidsetCatalog(String catalog)
    
public  voidsetDelegate(Connection c)
     Sets my delegate.
public  voidsetHoldability(int holdability)
    
public  voidsetReadOnly(boolean readOnly)
    
public  java.sql.SavepointsetSavepoint()
    
public  java.sql.SavepointsetSavepoint(String name)
    
public  voidsetTransactionIsolation(int level)
    
public  voidsetTypeMap(Map map)
    
public  StringtoString()
     Returns a string representation of the metadata associated with the innnermost delegate connection.

Field Detail
_closed
protected boolean _closed(Code)



_conn
protected Connection _conn(Code)
My delegate Connection .




Constructor Detail
DelegatingConnection
public DelegatingConnection(Connection c)(Code)
Create a wrapper for the Connectin which traces this Connection in the AbandonedObjectPool.
Parameters:
  c - the Connection to delegate all calls to.



DelegatingConnection
public DelegatingConnection(Connection c, AbandonedConfig config)(Code)
Create a wrapper for the Connection which traces the Statements created so that any unclosed Statements can be closed when this Connection is closed.
Parameters:
  c - the Connection to delegate all calls to.
Parameters:
  config - the configuration for tracing abandoned objects




Method Detail
activate
protected void activate()(Code)



checkOpen
protected void checkOpen() throws SQLException(Code)



clearWarnings
public void clearWarnings() throws SQLException(Code)



close
public void close() throws SQLException(Code)
Closes the underlying connection, and close any Statements that were not explicitly closed.



commit
public void commit() throws SQLException(Code)



createStatement
public Statement createStatement() throws SQLException(Code)



createStatement
public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException(Code)



createStatement
public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException(Code)



equals
public boolean equals(Object obj)(Code)



getAutoCommit
public boolean getAutoCommit() throws SQLException(Code)



getCatalog
public String getCatalog() throws SQLException(Code)



getDelegate
public Connection getDelegate()(Code)
Returns my underlying Connection . my underlying Connection.



getHoldability
public int getHoldability() throws SQLException(Code)



getInnermostDelegate
public Connection getInnermostDelegate()(Code)
If my underlying Connection is not a DelegatingConnection, returns it, otherwise recursively invokes this method on my delegate.

Hence this method will return the first delegate that is not a DelegatingConnection, or null when no non-DelegatingConnection delegate can be found by transversing this chain.

This method is useful when you may have nested DelegatingConnections, and you want to make sure to obtain a "genuine" Connection .




getMetaData
public DatabaseMetaData getMetaData() throws SQLException(Code)



getTransactionIsolation
public int getTransactionIsolation() throws SQLException(Code)



getTypeMap
public Map getTypeMap() throws SQLException(Code)



getWarnings
public SQLWarning getWarnings() throws SQLException(Code)



handleException
protected void handleException(SQLException e) throws SQLException(Code)



hashCode
public int hashCode()(Code)



innermostDelegateEquals
public boolean innermostDelegateEquals(Connection c)(Code)
Compares innermost delegate to the given connection.
Parameters:
  c - connection to compare innermost delegate with true if innermost delegate equals c
since:
   1.2.2



isClosed
public boolean isClosed() throws SQLException(Code)



isReadOnly
public boolean isReadOnly() throws SQLException(Code)



nativeSQL
public String nativeSQL(String sql) throws SQLException(Code)



passivate
protected void passivate() throws SQLException(Code)



prepareCall
public CallableStatement prepareCall(String sql) throws SQLException(Code)



prepareCall
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException(Code)



prepareCall
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException(Code)



prepareStatement
public PreparedStatement prepareStatement(String sql) throws SQLException(Code)



prepareStatement
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException(Code)



prepareStatement
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException(Code)



prepareStatement
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException(Code)



prepareStatement
public PreparedStatement prepareStatement(String sql, int columnIndexes) throws SQLException(Code)



prepareStatement
public PreparedStatement prepareStatement(String sql, String columnNames) throws SQLException(Code)



releaseSavepoint
public void releaseSavepoint(java.sql.Savepoint savepoint) throws SQLException(Code)



rollback
public void rollback() throws SQLException(Code)



rollback
public void rollback(java.sql.Savepoint savepoint) throws SQLException(Code)



setAutoCommit
public void setAutoCommit(boolean autoCommit) throws SQLException(Code)



setCatalog
public void setCatalog(String catalog) throws SQLException(Code)



setDelegate
public void setDelegate(Connection c)(Code)
Sets my delegate.



setHoldability
public void setHoldability(int holdability) throws SQLException(Code)



setReadOnly
public void setReadOnly(boolean readOnly) throws SQLException(Code)



setSavepoint
public java.sql.Savepoint setSavepoint() throws SQLException(Code)



setSavepoint
public java.sql.Savepoint setSavepoint(String name) throws SQLException(Code)



setTransactionIsolation
public void setTransactionIsolation(int level) throws SQLException(Code)



setTypeMap
public void setTypeMap(Map map) throws SQLException(Code)



toString
public String toString()(Code)
Returns a string representation of the metadata associated with the innnermost delegate connection.
since:
   1.2.2



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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