com.mysql.jdbc.jdbc2.optional
Class JDBC4StatementWrapper

java.lang.Object
  com.mysql.jdbc.jdbc2.optional.StatementWrapper
      com.mysql.jdbc.jdbc2.optional.JDBC4StatementWrapper

All Implemented Interfaces:

java.sql.Statement, java.sql.Wrapper

public class JDBC4StatementWrapper
extends StatementWrapper

Field Summary

protected MysqlPooledConnection	pooledConnection
protected java.util.Map	unwrappedInterfaces

Fields inherited from class com.mysql.jdbc.jdbc2.optional.StatementWrapper

wrappedConn, wrappedStmt

Fields inherited from interface java.sql.Statement

CLOSE_ALL_RESULTS, CLOSE_CURRENT_RESULT, EXECUTE_FAILED, KEEP_CURRENT_RESULT, NO_GENERATED_KEYS, RETURN_GENERATED_KEYS, SUCCESS_NO_INFO

Constructor Summary

JDBC4StatementWrapper(ConnectionWrapper c, MysqlPooledConnection conn, java.sql.Statement toWrap)

Method Summary

protected void	checkAndFireConnectionError(java.sql.SQLException sqlEx) Fires connection error event if required, before re-throwing exception
void	close()
boolean	isClosed()
boolean	isPoolable()
boolean	isWrapperFor(java.lang.Class<?> iface) Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does.
void	setPoolable(boolean poolable)
<T> T	unwrap(java.lang.Class<T> iface) Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy.

Methods inherited from class com.mysql.jdbc.jdbc2.optional.StatementWrapper

addBatch, cancel, clearBatch, clearWarnings, enableStreamingResults, execute, execute, execute, execute, executeBatch, executeQuery, executeUpdate, executeUpdate, executeUpdate, executeUpdate, getConnection, getFetchDirection, getFetchSize, getGeneratedKeys, getInstance, getMaxFieldSize, getMaxRows, getMoreResults, getMoreResults, getQueryTimeout, getResultSet, getResultSetConcurrency, getResultSetHoldability, getResultSetType, getUpdateCount, getWarnings, setCursorName, setEscapeProcessing, setFetchDirection, setFetchSize, setMaxFieldSize, setMaxRows, setQueryTimeout

Methods inherited from class java.lang.Object

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

Field Detail

pooledConnection

protected MysqlPooledConnection pooledConnection

unwrappedInterfaces

protected java.util.Map unwrappedInterfaces

Constructor Detail

JDBC4StatementWrapper

public JDBC4StatementWrapper(ConnectionWrapper c,
                             MysqlPooledConnection conn,
                             java.sql.Statement toWrap)

Method Detail

close

public void close()
           throws java.sql.SQLException

Specified by:

close in interface java.sql.Statement

Overrides:

close in class StatementWrapper

Throws:

java.sql.SQLException

isClosed

public boolean isClosed()
                 throws java.sql.SQLException

Specified by:

isClosed in interface java.sql.Statement

Overrides:

isClosed in class StatementWrapper

Throws:

java.sql.SQLException

setPoolable

public void setPoolable(boolean poolable)
                 throws java.sql.SQLException

Specified by:

setPoolable in interface java.sql.Statement

Overrides:

setPoolable in class StatementWrapper

Throws:

java.sql.SQLException

isPoolable

public boolean isPoolable()
                   throws java.sql.SQLException

Specified by:

isPoolable in interface java.sql.Statement

Overrides:

isPoolable in class StatementWrapper

Throws:

java.sql.SQLException

isWrapperFor

public boolean isWrapperFor(java.lang.Class<?> iface)
                     throws java.sql.SQLException

Returns true if this either implements the interface argument or is directly or indirectly a wrapper for an object that does. Returns false otherwise. If this implements the interface then return true, else if this is a wrapper then return the result of recursively calling isWrapperFor on the wrapped object. If this does not implement the interface and is not a wrapper, return false. This method should be implemented as a low-cost operation compared to unwrap so that callers can use this method to avoid expensive unwrap calls that may fail. If this method returns true then calling unwrap with the same argument should succeed.

Specified by:

isWrapperFor in interface java.sql.Wrapper

Overrides:

isWrapperFor in class StatementWrapper

Parameters:

interfaces - a Class defining an interface.

Returns:

true if this implements the interface or directly or indirectly wraps an object that does.

Throws:

java.sql.SQLException - if an error occurs while determining whether this is a wrapper for an object with the given interface.

Since:

1.6

unwrap

public <T> T unwrap(java.lang.Class<T> iface)
         throws java.sql.SQLException

Returns an object that implements the given interface to allow access to non-standard methods, or standard methods not exposed by the proxy. The result may be either the object found to implement the interface or a proxy for that object. If the receiver implements the interface then that is the object. If the receiver is a wrapper and the wrapped object implements the interface then that is the object. Otherwise the object is the result of calling unwrap recursively on the wrapped object. If the receiver is not a wrapper and does not implement the interface, then an SQLException is thrown.

Specified by:

unwrap in interface java.sql.Wrapper

Overrides:

unwrap in class StatementWrapper

Parameters:

iface - A Class defining an interface that the result must implement.

Returns:

an object that implements the interface. May be a proxy for the actual implementing object.

Throws:

java.sql.SQLException - If no object found that implements the interface

Since:

1.6

checkAndFireConnectionError

protected void checkAndFireConnectionError(java.sql.SQLException sqlEx)
                                    throws java.sql.SQLException

Fires connection error event if required, before re-throwing exception

Parameters:

sqlEx - the SQLException that has ocurred

Throws:

java.sql.SQLException - (rethrown)