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:

Serializable, SourceLocator, ExpressionNode, ExpressionOwner, XPathVisitable

public class FuncExtFunctionAvailable
extends FunctionOneArg

Execute the ExtFunctionAvailable() function.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FuncExtFunctionAvailable()

Method Summary

Modifier and Type	Method and Description
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

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.

Overrides:

execute in class Function

Parameters:

xctxt - The current execution context.

Returns:

A valid XObject.

Throws:

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