Package org.apache.xpath.functions
Class FuncPosition
java.lang.Object
org.apache.xpath.Expression
org.apache.xpath.functions.Function
org.apache.xpath.functions.FuncPosition
- All Implemented Interfaces:
Serializable
,SourceLocator
,ExpressionNode
,XPathVisitable
Execute the Position() function.
- See Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionexecute
(XPathContext xctxt) Execute the function.void
fixupVariables
(Vector vars, int globalsSize) No arguments to process, so this does nothing.int
Get the position in the current context node list.void
postCompileStep
(Compiler compiler) Figure out if we're executing a toplevel expression.Methods inherited from class org.apache.xpath.functions.Function
callArgVisitors, callVisitors, checkNumberArgs, deepEquals, setArg
Methods inherited from class org.apache.xpath.Expression
asIterator, asIteratorRaw, asNode, assertion, bool, canTraverseOutsideSubtree, error, execute, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isStableNumber, num, warn, xstr
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Constructor Details
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FuncPosition
public FuncPosition()
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Method Details
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postCompileStep
Figure out if we're executing a toplevel expression. If so, we can't be inside of a predicate.- Overrides:
postCompileStep
in classFunction
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getPositionInContextNodeList
Get the position in the current context node list.- Parameters:
xctxt
- Runtime XPath context.- Returns:
- The current position of the itteration in the context node list, or -1 if there is no active context node list.
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execute
Execute the function. The function must return a valid object.- Overrides:
execute
in classFunction
- Parameters:
xctxt
- The current execution context.- Returns:
- A valid XObject.
- Throws:
TransformerException
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fixupVariables
No arguments to process, so this does nothing.- Specified by:
fixupVariables
in classExpression
- Parameters:
vars
- List of QNames that correspond to variables. This list should be searched backwards for the first qualified name that corresponds to the variable reference qname. The position of the QName in the vector from the start of the vector will be its position in the stack frame (but variables above the globalsTop value will need to be offset to the current stack frame). NEEDSDOC @param globalsSize
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