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

All Implemented Interfaces:

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

public class FuncExtFunctionAvailable
extends FunctionOneArg

Execute the ExtFunctionAvailable() function.

See Also:

Serialized Form

Field Summary

private FunctionTable	m_functionTable
(package private) static long	serialVersionUID

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

m_arg0

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, 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

Field Detail

serialVersionUID

static final long serialVersionUID

See Also:

Constant Field Values

m_functionTable

private transient FunctionTable m_functionTable

Constructor Detail

FuncExtFunctionAvailable

public FuncExtFunctionAvailable()

Method Detail

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

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