Class ProjectComponent

  extended by org.modeshape.graph.query.process.ProcessingComponent
      extended by org.modeshape.graph.query.process.DelegatingComponent
          extended by org.modeshape.graph.query.process.ProjectComponent

public class ProjectComponent
extends DelegatingComponent

A ProcessingComponent implementation that performs a PROJECT operation to reduce the columns that appear in the results.

Nested Class Summary
Nested classes/interfaces inherited from class org.modeshape.graph.query.process.ProcessingComponent
Constructor Summary
ProjectComponent(ProcessingComponent delegate, List<Column> columns)
Method Summary
 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.graph.query.process.DelegatingComponent
close, delegate
Methods inherited from class org.modeshape.graph.query.process.ProcessingComponent
createDynamicOperation, createSortComparator, emptyTuples, getColumns, getContext, problems
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail


public ProjectComponent(ProcessingComponent delegate,
                        List<Column> columns)
Method Detail


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

Specified by:
execute in class ProcessingComponent
the list of tuples, where each tuple corresonds to the columns; never null
See Also:

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