org.apache.commons.dbcp
Class DelegatingConnection

java.lang.Object
  extended by org.apache.commons.dbcp.AbandonedTrace
      extended by org.apache.commons.dbcp.DelegatingConnection
All Implemented Interfaces:
java.sql.Connection, java.sql.Wrapper
Direct Known Subclasses:
ManagedConnection, PoolableConnection, PoolingConnection

public class DelegatingConnection
extends AbandonedTrace
implements java.sql.Connection

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.

Version:
$Revision: 896719 $ $Date: 2010-01-06 18:42:22 -0500 (Wed, 06 Jan 2010) $
Author:
Rodney Waldhoff, Glenn L. Nielsen, James House, Dirk Verbeeck

Field Summary
 
Fields inherited from interface java.sql.Connection
TRANSACTION_NONE, TRANSACTION_READ_COMMITTED, TRANSACTION_READ_UNCOMMITTED, TRANSACTION_REPEATABLE_READ, TRANSACTION_SERIALIZABLE
 
Constructor Summary
DelegatingConnection(java.sql.Connection c)
          Create a wrapper for the Connection which traces this Connection in the AbandonedObjectPool.
DelegatingConnection(java.sql.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
 void clearWarnings()
           
 void close()
          Closes the underlying connection, and close any Statements that were not explicitly closed.
 void commit()
           
 java.sql.Array createArrayOf(java.lang.String typeName, java.lang.Object[] elements)
           
 java.sql.Blob createBlob()
           
 java.sql.Clob createClob()
           
 java.sql.NClob createNClob()
           
 java.sql.SQLXML createSQLXML()
           
 java.sql.Statement createStatement()
           
 java.sql.Statement createStatement(int resultSetType, int resultSetConcurrency)
           
 java.sql.Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability)
           
 java.sql.Struct createStruct(java.lang.String typeName, java.lang.Object[] attributes)
           
 boolean equals(java.lang.Object obj)
          This method considers two objects to be equal if the underlying jdbc objects are equal.
 boolean getAutoCommit()
           
 java.lang.String getCatalog()
           
 java.util.Properties getClientInfo()
           
 java.lang.String getClientInfo(java.lang.String name)
           
 java.sql.Connection getDelegate()
          Returns my underlying Connection.
 int getHoldability()
           
 java.sql.Connection getInnermostDelegate()
          If my underlying Connection is not a DelegatingConnection, returns it, otherwise recursively invokes this method on my delegate.
 java.sql.DatabaseMetaData getMetaData()
           
 int getTransactionIsolation()
           
 java.util.Map getTypeMap()
           
 java.sql.SQLWarning getWarnings()
           
 int hashCode()
           
 boolean innermostDelegateEquals(java.sql.Connection c)
          Compares innermost delegate to the given connection.
 boolean isClosed()
           
 boolean isReadOnly()
           
 boolean isValid(int timeout)
           
 boolean isWrapperFor(java.lang.Class<?> iface)
           
 java.lang.String nativeSQL(java.lang.String sql)
           
 java.sql.CallableStatement prepareCall(java.lang.String sql)
           
 java.sql.CallableStatement prepareCall(java.lang.String sql, int resultSetType, int resultSetConcurrency)
           
 java.sql.CallableStatement prepareCall(java.lang.String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
           
 java.sql.PreparedStatement prepareStatement(java.lang.String sql)
           
 java.sql.PreparedStatement prepareStatement(java.lang.String sql, int autoGeneratedKeys)
           
 java.sql.PreparedStatement prepareStatement(java.lang.String sql, int[] columnIndexes)
           
 java.sql.PreparedStatement prepareStatement(java.lang.String sql, int resultSetType, int resultSetConcurrency)
           
 java.sql.PreparedStatement prepareStatement(java.lang.String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
           
 java.sql.PreparedStatement prepareStatement(java.lang.String sql, java.lang.String[] columnNames)
           
 void releaseSavepoint(java.sql.Savepoint savepoint)
           
 void rollback()
           
 void rollback(java.sql.Savepoint savepoint)
           
 void setAutoCommit(boolean autoCommit)
           
 void setCatalog(java.lang.String catalog)
           
 void setClientInfo(java.util.Properties properties)
           
 void setClientInfo(java.lang.String name, java.lang.String value)
           
 void setDelegate(java.sql.Connection c)
          Sets my delegate.
 void setHoldability(int holdability)
           
 void setReadOnly(boolean readOnly)
           
 java.sql.Savepoint setSavepoint()
           
 java.sql.Savepoint setSavepoint(java.lang.String name)
           
 void setTransactionIsolation(int level)
           
 void setTypeMap(java.util.Map map)
           
 java.lang.String toString()
          Returns a string representation of the metadata associated with the innnermost delegate connection.
<T> T
unwrap(java.lang.Class<T> iface)
           
 
Methods inherited from class org.apache.commons.dbcp.AbandonedTrace
printStackTrace
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

DelegatingConnection

public DelegatingConnection(java.sql.Connection c)
Create a wrapper for the Connection which traces this Connection in the AbandonedObjectPool.

Parameters:
c - the Connection to delegate all calls to.

DelegatingConnection

public DelegatingConnection(java.sql.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.

Parameters:
c - the Connection to delegate all calls to.
config - the configuration for tracing abandoned objects
Method Detail

clearWarnings

public void clearWarnings()
                   throws java.sql.SQLException
Specified by:
clearWarnings in interface java.sql.Connection
Throws:
java.sql.SQLException

close

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

Specified by:
close in interface java.sql.Connection
Throws:
java.sql.SQLException

commit

public void commit()
            throws java.sql.SQLException
Specified by:
commit in interface java.sql.Connection
Throws:
java.sql.SQLException

createArrayOf

public java.sql.Array createArrayOf(java.lang.String typeName,
                                    java.lang.Object[] elements)
                             throws java.sql.SQLException
Specified by:
createArrayOf in interface java.sql.Connection
Throws:
java.sql.SQLException

createBlob

public java.sql.Blob createBlob()
                         throws java.sql.SQLException
Specified by:
createBlob in interface java.sql.Connection
Throws:
java.sql.SQLException

createClob

public java.sql.Clob createClob()
                         throws java.sql.SQLException
Specified by:
createClob in interface java.sql.Connection
Throws:
java.sql.SQLException

createNClob

public java.sql.NClob createNClob()
                           throws java.sql.SQLException
Specified by:
createNClob in interface java.sql.Connection
Throws:
java.sql.SQLException

createSQLXML

public java.sql.SQLXML createSQLXML()
                             throws java.sql.SQLException
Specified by:
createSQLXML in interface java.sql.Connection
Throws:
java.sql.SQLException

createStatement

public java.sql.Statement createStatement()
                                   throws java.sql.SQLException
Specified by:
createStatement in interface java.sql.Connection
Throws:
java.sql.SQLException

createStatement

public java.sql.Statement createStatement(int resultSetType,
                                          int resultSetConcurrency)
                                   throws java.sql.SQLException
Specified by:
createStatement in interface java.sql.Connection
Throws:
java.sql.SQLException

createStatement

public java.sql.Statement createStatement(int resultSetType,
                                          int resultSetConcurrency,
                                          int resultSetHoldability)
                                   throws java.sql.SQLException
Specified by:
createStatement in interface java.sql.Connection
Throws:
java.sql.SQLException

createStruct

public java.sql.Struct createStruct(java.lang.String typeName,
                                    java.lang.Object[] attributes)
                             throws java.sql.SQLException
Specified by:
createStruct in interface java.sql.Connection
Throws:
java.sql.SQLException

equals

public boolean equals(java.lang.Object obj)
This method considers two objects to be equal if the underlying jdbc objects are equal.

Overrides:
equals in class java.lang.Object

getAutoCommit

public boolean getAutoCommit()
                      throws java.sql.SQLException
Specified by:
getAutoCommit in interface java.sql.Connection
Throws:
java.sql.SQLException

getCatalog

public java.lang.String getCatalog()
                            throws java.sql.SQLException
Specified by:
getCatalog in interface java.sql.Connection
Throws:
java.sql.SQLException

getClientInfo

public java.util.Properties getClientInfo()
                                   throws java.sql.SQLException
Specified by:
getClientInfo in interface java.sql.Connection
Throws:
java.sql.SQLException

getClientInfo

public java.lang.String getClientInfo(java.lang.String name)
                               throws java.sql.SQLException
Specified by:
getClientInfo in interface java.sql.Connection
Throws:
java.sql.SQLException

getDelegate

public java.sql.Connection getDelegate()
Returns my underlying Connection.

Returns:
my underlying Connection.

getHoldability

public int getHoldability()
                   throws java.sql.SQLException
Specified by:
getHoldability in interface java.sql.Connection
Throws:
java.sql.SQLException

getInnermostDelegate

public java.sql.Connection getInnermostDelegate()
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 traversing 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 java.sql.DatabaseMetaData getMetaData()
                                      throws java.sql.SQLException
Specified by:
getMetaData in interface java.sql.Connection
Throws:
java.sql.SQLException

getTransactionIsolation

public int getTransactionIsolation()
                            throws java.sql.SQLException
Specified by:
getTransactionIsolation in interface java.sql.Connection
Throws:
java.sql.SQLException

getTypeMap

public java.util.Map getTypeMap()
                         throws java.sql.SQLException
Specified by:
getTypeMap in interface java.sql.Connection
Throws:
java.sql.SQLException

getWarnings

public java.sql.SQLWarning getWarnings()
                                throws java.sql.SQLException
Specified by:
getWarnings in interface java.sql.Connection
Throws:
java.sql.SQLException

hashCode

public int hashCode()
Overrides:
hashCode in class java.lang.Object

innermostDelegateEquals

public boolean innermostDelegateEquals(java.sql.Connection c)
Compares innermost delegate to the given connection.

Parameters:
c - connection to compare innermost delegate with
Returns:
true if innermost delegate equals c
Since:
1.2.2

isClosed

public boolean isClosed()
                 throws java.sql.SQLException
Specified by:
isClosed in interface java.sql.Connection
Throws:
java.sql.SQLException

isReadOnly

public boolean isReadOnly()
                   throws java.sql.SQLException
Specified by:
isReadOnly in interface java.sql.Connection
Throws:
java.sql.SQLException

isValid

public boolean isValid(int timeout)
                throws java.sql.SQLException
Specified by:
isValid in interface java.sql.Connection
Throws:
java.sql.SQLException

isWrapperFor

public boolean isWrapperFor(java.lang.Class<?> iface)
                     throws java.sql.SQLException
Specified by:
isWrapperFor in interface java.sql.Wrapper
Throws:
java.sql.SQLException

nativeSQL

public java.lang.String nativeSQL(java.lang.String sql)
                           throws java.sql.SQLException
Specified by:
nativeSQL in interface java.sql.Connection
Throws:
java.sql.SQLException

prepareCall

public java.sql.CallableStatement prepareCall(java.lang.String sql)
                                       throws java.sql.SQLException
Specified by:
prepareCall in interface java.sql.Connection
Throws:
java.sql.SQLException

prepareCall

public java.sql.CallableStatement prepareCall(java.lang.String sql,
                                              int resultSetType,
                                              int resultSetConcurrency)
                                       throws java.sql.SQLException
Specified by:
prepareCall in interface java.sql.Connection
Throws:
java.sql.SQLException

prepareCall

public java.sql.CallableStatement prepareCall(java.lang.String sql,
                                              int resultSetType,
                                              int resultSetConcurrency,
                                              int resultSetHoldability)
                                       throws java.sql.SQLException
Specified by:
prepareCall in interface java.sql.Connection
Throws:
java.sql.SQLException

prepareStatement

public java.sql.PreparedStatement prepareStatement(java.lang.String sql)
                                            throws java.sql.SQLException
Specified by:
prepareStatement in interface java.sql.Connection
Throws:
java.sql.SQLException

prepareStatement

public java.sql.PreparedStatement prepareStatement(java.lang.String sql,
                                                   int autoGeneratedKeys)
                                            throws java.sql.SQLException
Specified by:
prepareStatement in interface java.sql.Connection
Throws:
java.sql.SQLException

prepareStatement

public java.sql.PreparedStatement prepareStatement(java.lang.String sql,
                                                   int[] columnIndexes)
                                            throws java.sql.SQLException
Specified by:
prepareStatement in interface java.sql.Connection
Throws:
java.sql.SQLException

prepareStatement

public java.sql.PreparedStatement prepareStatement(java.lang.String sql,
                                                   int resultSetType,
                                                   int resultSetConcurrency)
                                            throws java.sql.SQLException
Specified by:
prepareStatement in interface java.sql.Connection
Throws:
java.sql.SQLException

prepareStatement

public java.sql.PreparedStatement prepareStatement(java.lang.String sql,
                                                   int resultSetType,
                                                   int resultSetConcurrency,
                                                   int resultSetHoldability)
                                            throws java.sql.SQLException
Specified by:
prepareStatement in interface java.sql.Connection
Throws:
java.sql.SQLException

prepareStatement

public java.sql.PreparedStatement prepareStatement(java.lang.String sql,
                                                   java.lang.String[] columnNames)
                                            throws java.sql.SQLException
Specified by:
prepareStatement in interface java.sql.Connection
Throws:
java.sql.SQLException

releaseSavepoint

public void releaseSavepoint(java.sql.Savepoint savepoint)
                      throws java.sql.SQLException
Specified by:
releaseSavepoint in interface java.sql.Connection
Throws:
java.sql.SQLException

rollback

public void rollback()
              throws java.sql.SQLException
Specified by:
rollback in interface java.sql.Connection
Throws:
java.sql.SQLException

rollback

public void rollback(java.sql.Savepoint savepoint)
              throws java.sql.SQLException
Specified by:
rollback in interface java.sql.Connection
Throws:
java.sql.SQLException

setAutoCommit

public void setAutoCommit(boolean autoCommit)
                   throws java.sql.SQLException
Specified by:
setAutoCommit in interface java.sql.Connection
Throws:
java.sql.SQLException

setCatalog

public void setCatalog(java.lang.String catalog)
                throws java.sql.SQLException
Specified by:
setCatalog in interface java.sql.Connection
Throws:
java.sql.SQLException

setClientInfo

public void setClientInfo(java.util.Properties properties)
                   throws java.sql.SQLClientInfoException
Specified by:
setClientInfo in interface java.sql.Connection
Throws:
java.sql.SQLClientInfoException

setClientInfo

public void setClientInfo(java.lang.String name,
                          java.lang.String value)
                   throws java.sql.SQLClientInfoException
Specified by:
setClientInfo in interface java.sql.Connection
Throws:
java.sql.SQLClientInfoException

setDelegate

public void setDelegate(java.sql.Connection c)
Sets my delegate.


setHoldability

public void setHoldability(int holdability)
                    throws java.sql.SQLException
Specified by:
setHoldability in interface java.sql.Connection
Throws:
java.sql.SQLException

setReadOnly

public void setReadOnly(boolean readOnly)
                 throws java.sql.SQLException
Specified by:
setReadOnly in interface java.sql.Connection
Throws:
java.sql.SQLException

setSavepoint

public java.sql.Savepoint setSavepoint()
                                throws java.sql.SQLException
Specified by:
setSavepoint in interface java.sql.Connection
Throws:
java.sql.SQLException

setSavepoint

public java.sql.Savepoint setSavepoint(java.lang.String name)
                                throws java.sql.SQLException
Specified by:
setSavepoint in interface java.sql.Connection
Throws:
java.sql.SQLException

setTransactionIsolation

public void setTransactionIsolation(int level)
                             throws java.sql.SQLException
Specified by:
setTransactionIsolation in interface java.sql.Connection
Throws:
java.sql.SQLException

setTypeMap

public void setTypeMap(java.util.Map map)
                throws java.sql.SQLException
Specified by:
setTypeMap in interface java.sql.Connection
Throws:
java.sql.SQLException

toString

public java.lang.String toString()
Returns a string representation of the metadata associated with the innnermost delegate connection.

Overrides:
toString in class java.lang.Object
Since:
1.2.2

unwrap

public <T> T unwrap(java.lang.Class<T> iface)
         throws java.sql.SQLException
Specified by:
unwrap in interface java.sql.Wrapper
Throws:
java.sql.SQLException


Copyright © 2001-2004 Apache Software Foundation. Documenation generated February 11 2011.