org.apache.commons.jxpath.ri.axes
Class UnionContext
java.lang.Object
org.apache.commons.jxpath.ri.EvalContext
org.apache.commons.jxpath.ri.axes.NodeSetContext
org.apache.commons.jxpath.ri.axes.UnionContext
- All Implemented Interfaces:
- Iterator, ExpressionContext
public class UnionContext
- extends NodeSetContext
EvalContext that represents a union between other contexts - result
of a union operation like (a | b)
- Version:
- $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
- Author:
- Dmitri Plotnikov
Method Summary |
int |
getDocumentOrder()
Determines the document order for this context. |
boolean |
setPosition(int position)
Moves the current position to the specified index. |
Methods inherited from class org.apache.commons.jxpath.ri.EvalContext |
getContextNodeList, getContextNodePointer, getCurrentPosition, getJXPathContext, getPosition, getRootContext, getSingleNodePointer, getValue, hasNext, isChildOrderingRequired, next, remove, reset, sortPointers, toString |
UnionContext
public UnionContext(EvalContext parentContext,
EvalContext[] contexts)
- Create a new UnionContext.
- Parameters:
parentContext
- parent contextcontexts
- child contexts
getDocumentOrder
public int getDocumentOrder()
- Description copied from class:
EvalContext
- Determines the document order for this context.
- Overrides:
getDocumentOrder
in class EvalContext
- Returns:
- 1 ascending order, -1 descending order,
0 - does not require ordering
setPosition
public boolean setPosition(int position)
- Description copied from class:
EvalContext
- Moves the current position to the specified index. Used with integer
predicates to quickly get to the n'th element of the node set.
Returns false if the position is out of the node set range.
You can call it with 0 as the position argument to restart the iteration.
- Overrides:
setPosition
in class NodeSetContext
- Parameters:
position
- to set
- Returns:
- boolean
Copyright © 2001-2008 The Apache Software Foundation. All Rights Reserved.