org.apache.xalan.extensions
Class ExtensionHandlerGeneral
java.lang.Object
|
+--org.apache.xalan.extensions.ExtensionHandler
|
+--org.apache.xalan.extensions.ExtensionHandlerGeneral
- public class ExtensionHandlerGeneral
- extends ExtensionHandler
Class handling an extension namespace for XPath. Provides functions
to test a function's existence and call a function
- Usage:
- **For internal use only**
|
Constructor Summary |
ExtensionHandlerGeneral(java.lang.String namespaceUri,
StringVector elemNames,
StringVector funcNames,
java.lang.String scriptLang,
java.lang.String scriptSrcURL,
java.lang.String scriptSrc,
java.lang.String systemId)
Construct a new extension namespace handler given all the information
needed. |
| Methods inherited from class java.lang.Object |
equals,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
ExtensionHandlerGeneral
public ExtensionHandlerGeneral(java.lang.String namespaceUri,
StringVector elemNames,
StringVector funcNames,
java.lang.String scriptLang,
java.lang.String scriptSrcURL,
java.lang.String scriptSrc,
java.lang.String systemId)
throws TransformerException
- Construct a new extension namespace handler given all the information
needed.
- Parameters:
namespaceUri - the extension namespace URI that I'm implementingelemNames - Vector of element namesfuncNames - string containing list of functions of extension NSscriptLang - Scripting language of implementationscriptSrcURL - URL of source scriptscriptSrc - the actual script code (if any)systemId - - Throws:
- TransformerException -
isFunctionAvailable
public boolean isFunctionAvailable(java.lang.String function)
- Tests whether a certain function name is known within this namespace.
- Parameters:
function - name of the function being tested- Returns:
- true if its known, false if not.
- Overrides:
- isFunctionAvailable in class ExtensionHandler
isElementAvailable
public boolean isElementAvailable(java.lang.String element)
- Tests whether a certain element name is known within this namespace.
- Parameters:
element - name of the element being tested- Returns:
- true if its known, false if not.
- Overrides:
- isElementAvailable in class ExtensionHandler
callFunction
public java.lang.Object callFunction(java.lang.String funcName,
java.util.Vector args,
java.lang.Object methodKey,
ExpressionContext exprContext)
throws TransformerException
- Process a call to a function.
- Parameters:
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.- Returns:
- the return value of the function evaluation.
- Throws:
- TransformerException - if parsing trouble
- Overrides:
- callFunction in class ExtensionHandler
callFunction
public java.lang.Object callFunction(FuncExtFunction extFunction,
java.util.Vector args,
ExpressionContext exprContext)
throws TransformerException
- Process a call to an XPath extension function
- Parameters:
extFunction - The XPath extension functionargs - The arguments of the function call.exprContext - The context in which this expression is being executed.- Returns:
- the return value of the function evaluation.
- Throws:
- TransformerException -
- Overrides:
- callFunction in class ExtensionHandler
processElement
public void processElement(java.lang.String localPart,
ElemTemplateElement element,
TransformerImpl transformer,
Stylesheet stylesheetTree,
java.lang.Object methodKey)
throws TransformerException,
java.io.IOException
- Process a call to this extension namespace via an element. As a side
effect, the results are sent to the TransformerImpl's result tree.
- Parameters:
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.- Throws:
- XSLProcessorException - thrown if something goes wrong
while running the extension handler.
- MalformedURLException - if loading trouble
- FileNotFoundException - if loading trouble
- java.io.IOException - if loading trouble
- TransformerException - if parsing trouble
- Overrides:
- processElement in class ExtensionHandler
Copyright © 2006 Apache XML Project. All Rights Reserved.