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java.lang.Object | +--org.apache.xalan.extensions.ExtensionHandler
Abstract base class for handling an extension namespace for XPath. Provides functions to test a function's existence and call a function. Also provides functions for calling an element and testing for an element's existence.
| Method Summary | |
abstract java.lang.Object |
callFunction(FuncExtFunction extFunction,
java.util.Vector args,
ExpressionContext exprContext)
Process a call to a function. |
abstract java.lang.Object |
callFunction(java.lang.String funcName,
java.util.Vector args,
java.lang.Object methodKey,
ExpressionContext exprContext)
Process a call to a function. |
abstract boolean |
isElementAvailable(java.lang.String element)
Tests whether a certain element name is known within this namespace. |
abstract boolean |
isFunctionAvailable(java.lang.String function)
Tests whether a certain function name is known within this namespace. |
abstract void |
processElement(java.lang.String localPart,
ElemTemplateElement element,
TransformerImpl transformer,
Stylesheet stylesheetTree,
java.lang.Object methodKey)
Process a call to this extension namespace via an element. |
| Methods inherited from class java.lang.Object |
equals,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
| Method Detail |
public abstract boolean isFunctionAvailable(java.lang.String function)
function - name of the function being testedpublic abstract boolean isElementAvailable(java.lang.String element)
element - Name of element to check
public abstract java.lang.Object callFunction(java.lang.String funcName,
java.util.Vector args,
java.lang.Object methodKey,
ExpressionContext exprContext)
throws TransformerException
funcName - Function name.args - The arguments of the function call.methodKey - A key that uniquely identifies this class and method call.exprContext - The context in which this expression is being executed.
public abstract java.lang.Object callFunction(FuncExtFunction extFunction,
java.util.Vector args,
ExpressionContext exprContext)
throws TransformerException
extFunction - The XPath extension function.args - The arguments of the function call.exprContext - The context in which this expression is being executed.
public abstract void processElement(java.lang.String localPart,
ElemTemplateElement element,
TransformerImpl transformer,
Stylesheet stylesheetTree,
java.lang.Object methodKey)
throws TransformerException,
java.io.IOException
localPart - Element name's local part.element - The extension element being processed.transformer - Handle to TransformerImpl.stylesheetTree - The compiled stylesheet tree.methodKey - A key that uniquely identifies this class and method call.
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