astcentric.structure.query
Class Union

java.lang.Object
  astcentric.structure.query.Union

All Implemented Interfaces:

NodeCollector

public class Union
extends java.lang.Object

Field Summary

protected java.util.List<NodeCollector>

_collectors

Constructor Summary

Union()

Method Summary

void	add(NodeCollector collector) Appends the specified collector to the list of collectors.
NodeCollection	collect(Node node, QueryContext context) Creates a node collection for the specified node.
protected astcentric.structure.query.AbstractNodeCollectorCollection	createCollectorCollection()
protected java.util.Set<Node>	gatherNodes(Node node, QueryContext queryContext, int startIndex)
void	traverseCollectors(NodeCollectorHandler handler) Traverses over all collectors in the order their had been added and sends them to the specified handler.

Methods inherited from class java.lang.Object

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

Field Detail

_collectors

protected final java.util.List<NodeCollector> _collectors

Constructor Detail

Union

public Union()

Method Detail

collect

public NodeCollection collect(Node node,
                              QueryContext context)

Description copied from interface: NodeCollector

Creates a node collection for the specified node.

Parameters:

node - A non-null node which might be related to the collection to be created.

context - A non-null query context.

Returns:

never null.

add

public void add(NodeCollector collector)

Appends the specified collector to the list of collectors.

traverseCollectors

public void traverseCollectors(NodeCollectorHandler handler)

Traverses over all collectors in the order their had been added and sends them to the specified handler.

gatherNodes

protected java.util.Set<Node> gatherNodes(Node node,
                                          QueryContext queryContext,
                                          int startIndex)

createCollectorCollection

protected astcentric.structure.query.AbstractNodeCollectorCollection createCollectorCollection()