Class PredicateContext
java.lang.Object
org.apache.commons.jxpath.ri.EvalContext
org.apache.commons.jxpath.ri.axes.PredicateContext
- All Implemented Interfaces:
Iterator
,ExpressionContext
EvalContext that checks predicates.
- Version:
- $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate boolean
private PropertyPointer
private Expression
private Expression
Fields inherited from class org.apache.commons.jxpath.ri.EvalContext
parentContext, position, rootContext
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Constructor Summary
ConstructorsConstructorDescriptionPredicateContext
(EvalContext parentContext, Expression expression) Create a new PredicateContext. -
Method Summary
Modifier and TypeMethodDescriptionReturns the current context node.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.void
reset()
Sets current position = 0, which is the pre-iteration state.boolean
setPosition
(int position) Moves the current position to the specified index.private boolean
setPositionStandard
(int position) Basic setPositionprivate boolean
Used for an optimized access to dynamic properties using the "map[@name = 'name']" syntaxMethods inherited from class org.apache.commons.jxpath.ri.EvalContext
getContextNodeList, getContextNodePointer, getCurrentPosition, getDocumentOrder, getJXPathContext, getNodeSet, getPosition, getRootContext, getSingleNodePointer, getValue, hasNext, isChildOrderingRequired, next, remove, sortPointers, toString
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface java.util.Iterator
forEachRemaining
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Field Details
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expression
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done
private boolean done -
nameTestExpression
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dynamicPropertyPointer
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Constructor Details
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PredicateContext
Create a new PredicateContext.- Parameters:
parentContext
- parent contextexpression
- compiled Expression
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Method Details
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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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setupDynamicPropertyPointer
private boolean setupDynamicPropertyPointer()Used for an optimized access to dynamic properties using the "map[@name = 'name']" syntax- Returns:
- whether valid
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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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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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reset
public void reset()Description copied from class:EvalContext
Sets current position = 0, which is the pre-iteration state.- Overrides:
reset
in classEvalContext
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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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setPositionStandard
private boolean setPositionStandard(int position) Basic setPosition- Parameters:
position
- to set- Returns:
- whether valid
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