org.apache.xpath.functions
Class FuncExtFunctionAvailable

java.lang.Object
  |
  +--org.apache.xpath.Expression
        |
        +--org.apache.xpath.functions.Function
              |
              +--org.apache.xpath.functions.FunctionOneArg
                    |
                    +--org.apache.xpath.functions.FuncExtFunctionAvailable

public class FuncExtFunctionAvailable
extends FunctionOneArg

Execute the ExtFunctionAvailable() function.

See Also:
Serialized Form
Usage:
**For advanced use only**

Constructor Summary
FuncExtFunctionAvailable()
           
 
Method Summary
 XObject execute(XPathContext xctxt)
          Execute the function.
 void setFunctionTable(FunctionTable aTable)
          The function table is an instance field.
 
Methods inherited from class org.apache.xpath.functions.FunctionOneArg
callArgVisitors, canTraverseOutsideSubtree, checkNumberArgs, deepEquals, fixupVariables, getArg0, getExpression, 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, isStableNumber, num, warn, xstr
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

FuncExtFunctionAvailable

public FuncExtFunctionAvailable()
Method Detail

execute

public XObject execute(XPathContext xctxt)
                throws TransformerException
Execute the function. The function must return a valid object.
Parameters:
xctxt - The current execution context.
Returns:
A valid XObject.
Throws:
TransformerException -  
Overrides:
execute in class Function

setFunctionTable

public void setFunctionTable(FunctionTable aTable)
The function table is an instance field. In order to access this instance field during evaluation, this method is called at compilation time to insert function table information for later usage. It should only be used during compiling of XPath expressions.
Parameters:
aTable - an instance of the function table


Copyright 2006 Apache XML Project. All Rights Reserved.