org.modeshape.jcr.query.process

Class UnionComponent

java.lang.Object

org.modeshape.jcr.query.process.ProcessingComponent

org.modeshape.jcr.query.process.SetOperationComponent

org.modeshape.jcr.query.process.UnionComponent

public class UnionComponent
extends SetOperationComponent

Nested Class Summary

Nested classes/interfaces inherited from class org.modeshape.jcr.query.process.ProcessingComponent

ProcessingComponent.DynamicOperation

Field Summary

Fields inherited from class org.modeshape.jcr.query.process.SetOperationComponent

removeDuplicatesComparator, sourceReformatters

Constructor Summary

Constructors

Constructor and Description
UnionComponent(QueryContext context, QueryResults.Columns columns, Iterable<ProcessingComponent> sources, boolean alreadySorted, boolean all)

Method Summary

Methods

Modifier and Type	Method and Description
List<Object[]>	execute() Execute this stage of processing and return the resulting tuples that each conform to the columns.

Methods inherited from class org.modeshape.jcr.query.process.SetOperationComponent

getColumns, removeDuplicatesIfRequested, sources, unionCompatible, wrapWithLocationOrdering

Methods inherited from class org.modeshape.jcr.query.process.ProcessingComponent

close, createDynamicOperation, createSortComparator, emptyTuples, getContext, getLocationIndexes, problems

Methods inherited from class java.lang.Object

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

Constructor Detail

UnionComponent

public UnionComponent(QueryContext context,
              QueryResults.Columns columns,
              Iterable<ProcessingComponent> sources,
              boolean alreadySorted,
              boolean all)

Method Detail

execute

public List<Object[]> execute()

Description copied from class: ProcessingComponent

Execute this stage of processing and return the resulting tuples that each conform to the columns.

Specified by:

execute in class ProcessingComponent

Returns:

the list of tuples, where each tuple corresonds to the columns; never null