Package org.apache.xpath.functions
Class FuncLast
- java.lang.Object
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- org.apache.xpath.Expression
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- org.apache.xpath.functions.Function
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- org.apache.xpath.functions.FuncLast
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- All Implemented Interfaces:
java.io.Serializable
,javax.xml.transform.SourceLocator
,ExpressionNode
,XPathVisitable
public class FuncLast extends Function
Execute the Last() function.- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description FuncLast()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description XObject
execute(XPathContext xctxt)
Execute the function.void
fixupVariables(java.util.Vector vars, int globalsSize)
No arguments to process, so this does nothing.int
getCountOfContextNodeList(XPathContext xctxt)
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
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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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Method Detail
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postCompileStep
public void postCompileStep(Compiler compiler)
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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getCountOfContextNodeList
public int getCountOfContextNodeList(XPathContext xctxt) throws javax.xml.transform.TransformerException
Get the position in the current context node list.- Parameters:
xctxt
- non-null reference to XPath runtime context.- Returns:
- The number of nodes in the list.
- Throws:
javax.xml.transform.TransformerException
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execute
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
Execute the function. The function must return a valid object.
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fixupVariables
public void fixupVariables(java.util.Vector vars, int globalsSize)
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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