org.mmbase.module.database
Class MultiStatement

java.lang.Object
  org.mmbase.module.database.MultiStatement

All Implemented Interfaces:

Statement, Wrapper

public class MultiStatement
extends Object
implements Statement

MultiStatement is a wrapper class for a callable Statement obtained by a MultiConnection object. The sole function of this class is to log the sql statement passed to it using the MultiConnection that called it - all calls are then passed to the Statement object passed to the constructor.

Version:

$Id: MultiStatement.java 34900 2009-05-01 16:29:42Z michiel $

Author:

vpro, Pierre van Rooden

Sql:

It would possibly be better to pass the logging of the sql query to the code that calls the statement, rather than place it in the statement itself, as it's implementation leads to conflicts between various JDBC versions.

Field Summary

(package private) MultiConnection

parent The connection that created this statement.

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

MultiStatement(MultiConnection parent, Statement s)

Method Summary

void	addBatch(String sql)
void	cancel()
protected Statement	checkAfterException() Tries to fix the parent connection, if it proves to be broken.
void	clearBatch()
void	clearWarnings()
void	close()
boolean	execute(String sql)
boolean	execute(String sql, int autoGeneratedKeys) Executes the given SQL statement, which may return multiple results, and signals the driver that any auto-generated keys should be made available for retrieval.
boolean	execute(String sql, int[] columnIndexes) Executes the given SQL statement, which may return multiple results, and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
boolean	execute(String sql, String[] columnNames) Executes the given SQL statement, which may return multiple results, and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
int[]	executeBatch()
ResultSet	executeQuery(String sql)
int	executeUpdate(String sql)
int	executeUpdate(String sql, int autoGeneratedKeys) Executes the given SQL statement and signals the driver with the given flag about whether the auto-generated keys produced by this Statement object should be made available for retrieval.
int	executeUpdate(String sql, int[] columnIndexes) Executes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
int	executeUpdate(String sql, String[] columnNames) Executes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
Connection	getConnection()
int	getFetchDirection()
int	getFetchSize()
ResultSet	getGeneratedKeys() Retrieves any auto-generated keys created as a result of executing this Statement object.
int	getMaxFieldSize()
int	getMaxRows()
boolean	getMoreResults()
boolean	getMoreResults(int current) Moves to this Statement object's next result, deals with any current ResultSet object(s) according to the instructions specified by the given flag, and returns true if the next result is a ResultSet object.
int	getQueryTimeout()
ResultSet	getResultSet()
int	getResultSetConcurrency()
int	getResultSetHoldability() Retrieves the result set holdability for ResultSet objects generated by this Statement object.
int	getResultSetType()
int	getUpdateCount()
SQLWarning	getWarnings()
boolean	isClosed()
boolean	isPoolable()
boolean	isWrapperFor(Class<?> iface)
void	setCursorName(String name)
void	setEscapeProcessing(boolean enable)
void	setFetchDirection(int dir)
void	setFetchSize(int i)
void	setMaxFieldSize(int max)
void	setMaxRows(int max)
void	setPoolable(boolean p)
void	setQueryTimeout(int seconds)
<T> T	unwrap(Class<T> iface)

Methods inherited from class java.lang.Object

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

Field Detail

parent

MultiConnection parent

The connection that created this statement.

Constructor Detail

MultiStatement

MultiStatement(MultiConnection parent,
               Statement s)

Javadoc:

Method Detail

executeUpdate

public int executeUpdate(String sql)
                  throws SQLException

Specified by:

executeUpdate in interface Statement

Throws:

SQLException

Javadoc:

close

public void close()
           throws SQLException

Specified by:

close in interface Statement

Throws:

SQLException

Javadoc:

getMaxFieldSize

public int getMaxFieldSize()
                    throws SQLException

Specified by:

getMaxFieldSize in interface Statement

Throws:

SQLException

Javadoc:

setMaxFieldSize

public void setMaxFieldSize(int max)
                     throws SQLException

Specified by:

setMaxFieldSize in interface Statement

Throws:

SQLException

Javadoc:

getMaxRows

public int getMaxRows()
               throws SQLException

Specified by:

getMaxRows in interface Statement

Throws:

SQLException

Javadoc:

setMaxRows

public void setMaxRows(int max)
                throws SQLException

Specified by:

setMaxRows in interface Statement

Throws:

SQLException

Javadoc:

setEscapeProcessing

public void setEscapeProcessing(boolean enable)
                         throws SQLException

Specified by:

setEscapeProcessing in interface Statement

Throws:

SQLException

Javadoc:

getQueryTimeout

public int getQueryTimeout()
                    throws SQLException

Specified by:

getQueryTimeout in interface Statement

Throws:

SQLException

Javadoc:

setQueryTimeout

public void setQueryTimeout(int seconds)
                     throws SQLException

Specified by:

setQueryTimeout in interface Statement

Throws:

SQLException

Javadoc:

cancel

public void cancel()
            throws SQLException

Specified by:

cancel in interface Statement

Throws:

SQLException

Javadoc:

getWarnings

public SQLWarning getWarnings()
                       throws SQLException

Specified by:

getWarnings in interface Statement

Throws:

SQLException

Javadoc:

clearWarnings

public void clearWarnings()
                   throws SQLException

Specified by:

clearWarnings in interface Statement

Throws:

SQLException

Javadoc:

execute

public boolean execute(String sql)
                throws SQLException

Specified by:

execute in interface Statement

Throws:

SQLException

Javadoc:

getResultSet

public ResultSet getResultSet()
                       throws SQLException

Specified by:

getResultSet in interface Statement

Throws:

SQLException

Javadoc:

getUpdateCount

public int getUpdateCount()
                   throws SQLException

Specified by:

getUpdateCount in interface Statement

Throws:

SQLException

Javadoc:

getMoreResults

public boolean getMoreResults()
                       throws SQLException

Specified by:

getMoreResults in interface Statement

Throws:

SQLException

Javadoc:

setCursorName

public void setCursorName(String name)
                   throws SQLException

Specified by:

setCursorName in interface Statement

Throws:

SQLException

Javadoc:

checkAfterException

protected Statement checkAfterException()
                                 throws SQLException

Tries to fix the parent connection, if it proves to be broken. It is supposed to be broken if the query "SELECT 1 FROM