org.wandora.query2

Class Union.UnionIterator

java.lang.Object

org.wandora.query2.ResultIterator

org.wandora.query2.Union.UnionIterator

Enclosing class:

Union

private class Union.UnionIterator
extends ResultIterator

Nested Class Summary

Nested classes/interfaces inherited from class org.wandora.query2.ResultIterator

ResultIterator.BufferedIterator, ResultIterator.CachedIterator, ResultIterator.EmptyIterator, ResultIterator.ListIterator, ResultIterator.SingleIterator

Field Summary

Fields

Modifier and Type	Field and Description
QueryContext	context
int	currentDirective
ResultRow[]	firstRows
ResultRow	input
ResultIterator[]	iterators
ResultRow	nextRow
java.util.ArrayList<java.lang.String>	roles

Constructor Summary

Constructors

Constructor and Description
UnionIterator(QueryContext context, ResultRow input)

Method Summary

Modifier and Type	Method and Description
void	dispose() Finalizes the iterator and performs any cleanup needed.
boolean	hasNext() Checks if there is another row available.
private ResultRow	makeRow(ResultRow row)
ResultRow	next() Gets the next row in the results and moves the iterator forward one row.
void	reset() Resets the iterator to its initial position.

Methods inherited from class java.lang.Object

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

Field Detail

context

public QueryContext context

input

public ResultRow input

firstRows

public ResultRow[] firstRows

iterators

public ResultIterator[] iterators

currentDirective

public int currentDirective

roles

public java.util.ArrayList<java.lang.String> roles

nextRow

public ResultRow nextRow

Constructor Detail

UnionIterator

public UnionIterator(QueryContext context,
                     ResultRow input)
              throws QueryException

Throws:

QueryException

Method Detail

makeRow

private ResultRow makeRow(ResultRow row)
                   throws QueryException

Throws:

QueryException

dispose

public void dispose()
             throws QueryException

Description copied from class: ResultIterator

Finalizes the iterator and performs any cleanup needed. This iterator cannot be used at all after a call to this.

Specified by:

dispose in class ResultIterator

Throws:

QueryException

hasNext

public boolean hasNext()
                throws QueryException

Description copied from class: ResultIterator

Checks if there is another row available.

Specified by:

hasNext in class ResultIterator

Throws:

QueryException

next

public ResultRow next()
               throws QueryException,
                      java.util.NoSuchElementException

Description copied from class: ResultIterator

Gets the next row in the results and moves the iterator forward one row. If there are no more rows NoSuchElementException is thrown.

Specified by:

next in class ResultIterator

Throws:

QueryException

java.util.NoSuchElementException

reset

public void reset()
           throws QueryException

Description copied from class: ResultIterator

Resets the iterator to its initial position.

Specified by:

reset in class ResultIterator

Throws:

QueryException