Class InitialContext
- java.lang.Object
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- org.apache.commons.jxpath.ri.EvalContext
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- org.apache.commons.jxpath.ri.axes.InitialContext
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- All Implemented Interfaces:
java.util.Iterator
,ExpressionContext
public class InitialContext extends EvalContext
A single-set EvalContext that provides access to the current node of the parent context and nothing else. It does not pass the iteration on to the parent context.- Version:
- $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
- Author:
- Dmitri Plotnikov
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Field Summary
Fields Modifier and Type Field Description private boolean
collection
private NodePointer
nodePointer
private boolean
started
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Fields inherited from class org.apache.commons.jxpath.ri.EvalContext
parentContext, position, rootContext
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Constructor Summary
Constructors Constructor Description InitialContext(EvalContext parentContext)
Create a new InitialContext.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description NodePointer
getCurrentNodePointer()
Returns the current context node.Pointer
getSingleNodePointer()
Returns the first encountered Pointer that matches the current context's criteria.java.lang.Object
getValue()
Typically returns the NodeSet by calling getNodeSet(), but will be overridden for contexts that more naturally produce individual values, e.g.boolean
nextNode()
Returns true if there is another object in the current set.boolean
nextSet()
Returns true if there is another sets of objects to interate over.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, getDocumentOrder, getJXPathContext, getNodeSet, getPosition, getRootContext, hasNext, isChildOrderingRequired, next, remove, reset, sortPointers, toString
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Field Detail
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started
private boolean started
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collection
private boolean collection
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nodePointer
private NodePointer nodePointer
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Constructor Detail
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InitialContext
public InitialContext(EvalContext parentContext)
Create a new InitialContext.- Parameters:
parentContext
- parent context
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Method Detail
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getSingleNodePointer
public Pointer getSingleNodePointer()
Description copied from class:EvalContext
Returns the first encountered Pointer that matches the current context's criteria.- Overrides:
getSingleNodePointer
in classEvalContext
- Returns:
- Pointer
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getCurrentNodePointer
public NodePointer getCurrentNodePointer()
Description copied from class:EvalContext
Returns the current context node. Undefined before the beginning of the iteration.- Specified by:
getCurrentNodePointer
in classEvalContext
- Returns:
- NodePoiner
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getValue
public java.lang.Object getValue()
Description copied from class:EvalContext
Typically returns the NodeSet by calling getNodeSet(), but will be overridden for contexts that more naturally produce individual values, e.g. VariableContext- Overrides:
getValue
in classEvalContext
- Returns:
- Object
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nextNode
public boolean nextNode()
Description copied from class:EvalContext
Returns true if there is another object in the current set. Switches the current position and node to the next object.- Specified by:
nextNode
in classEvalContext
- Returns:
- boolean
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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 classEvalContext
- Parameters:
position
- to set- Returns:
- boolean
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nextSet
public boolean nextSet()
Description copied from class:EvalContext
Returns true if there is another sets of objects to interate over. Resets the current position and node.- Overrides:
nextSet
in classEvalContext
- Returns:
- boolean
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