org.apache.ddlutils.platform

Class ModelBasedResultSetIterator

java.lang.Object

org.apache.ddlutils.platform.ModelBasedResultSetIterator

All Implemented Interfaces:

Iterator

public class ModelBasedResultSetIterator
extends Object
implements Iterator

This is an iterator that is specifically targeted at traversing result sets. If the query is against a known table, then SqlDynaBean instances are created from the rows, otherwise normal DynaBean instances are created.

Constructor Summary

Constructors

Constructor and Description
ModelBasedResultSetIterator(PlatformImplBase platform, Database model, ResultSet resultSet, Table[] queryHints, boolean cleanUpAfterFinish) Creates a new iterator.

Method Summary

Methods

Modifier and Type	Method and Description
void	advance() Advances the iterator without materializing the object.
void	cleanUp() Closes the resources (connection, statement, resultset).
protected void	finalize()
boolean	hasNext()
boolean	isConnectionOpen() Determines whether the connection is still open.
Object	next()
void	remove()

Methods inherited from class java.lang.Object

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

Constructor Detail

ModelBasedResultSetIterator

public ModelBasedResultSetIterator(PlatformImplBase platform,
                           Database model,
                           ResultSet resultSet,
                           Table[] queryHints,
                           boolean cleanUpAfterFinish)
                            throws DatabaseOperationException

Creates a new iterator.

Parameters:

platform - The platform

model - The database model

resultSet - The result set

queryHints - The tables that were queried in the query that produced the given result set (optional)

cleanUpAfterFinish - Whether to close the statement and connection after finishing the iteration, upon on exception, or when this iterator is garbage collected

Throws:

DatabaseOperationException

Method Detail

hasNext

public boolean hasNext()
                throws DatabaseOperationException

Specified by:

hasNext in interface Iterator

Throws:

DatabaseOperationException

next

public Object next()
            throws DatabaseOperationException

Specified by:

next in interface Iterator

Throws:

DatabaseOperationException

advance

public void advance()

Advances the iterator without materializing the object. This is the same effect as calling next() except that no object is created and nothing is read from the result set.

remove

public void remove()
            throws DatabaseOperationException

Specified by:

remove in interface Iterator

Throws:

DatabaseOperationException

cleanUp

public void cleanUp()

Closes the resources (connection, statement, resultset).

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable

isConnectionOpen

public boolean isConnectionOpen()

Determines whether the connection is still open.

Returns:

true if the connection is still open