org.apache.xpath.functions
Class FuncId

java.lang.Object
  org.apache.xpath.Expression
      org.apache.xpath.functions.Function
          org.apache.xpath.functions.FunctionOneArg
              org.apache.xpath.functions.FuncId

All Implemented Interfaces:

ExpressionNode, ExpressionOwner, Serializable, javax.xml.transform.SourceLocator, XPathVisitable

public class FuncId

extends FunctionOneArg

Execute the Id() function.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.xpath.functions.FunctionOneArg

m_arg0

Fields inherited from class org.apache.xpath.Expression

Constructor Summary

FuncId()

Method Summary

XObject	execute(XPathContext xctxt) Execute the function.
private StringVector	getNodesByID(XPathContext xctxt, int docContext, String refval, StringVector usedrefs, NodeSetDTM nodeSet, boolean mayBeMore) Fill in a list with nodes that match a space delimited list if ID ID references.

Methods inherited from class org.apache.xpath.functions.FunctionOneArg

callArgVisitors, canTraverseOutsideSubtree, checkNumberArgs, deepEquals, fixupVariables, getArg0, getExpression, reportWrongNumberArgs, setArg, setExpression

Methods inherited from class org.apache.xpath.functions.Function

callVisitors, postCompileStep

Methods inherited from class org.apache.xpath.Expression

asIterator, asIteratorRaw, asNode, assertion, bool, error, execute, execute, execute, executeCharsToContentHandler, exprAddChild, exprGetChild, exprGetNumChildren, exprGetParent, exprSetParent, getColumnNumber, getExpressionOwner, getLineNumber, getPublicId, getSystemId, isNodesetExpr, isSameClass, isStableNumber, num, warn, xstr

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FuncId

public FuncId()

Method Detail

getNodesByID

private StringVector getNodesByID(XPathContext xctxt,
                                  int docContext,
                                  String refval,
                                  StringVector usedrefs,
                                  NodeSetDTM nodeSet,
                                  boolean mayBeMore)

Fill in a list with nodes that match a space delimited list if ID ID references.

Parameters:

xctxt - The runtime XPath context.

docContext - The document where the nodes are being looked for.

refval - A space delimited list of ID references.

usedrefs - List of references for which nodes were found.

nodeSet - Node set where the nodes will be added to.

mayBeMore - true if there is another set of nodes to be looked for.

Returns:

The usedrefs value.

execute

public XObject execute(XPathContext xctxt)
                throws javax.xml.transform.TransformerException

Execute the function. The function must return a valid object.

Overrides:

execute in class Function

Parameters:

xctxt - The current execution context.

Returns:

A valid XObject.

Throws:

javax.xml.transform.TransformerException