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java.lang.Objectorg.apache.xalan.extensions.ExtensionHandler
org.apache.xalan.extensions.ExtensionHandlerGeneral
Class handling an extension namespace for XPath. Provides functions to test a function's existence and call a function
Constructor Summary | |
ExtensionHandlerGeneral(String namespaceUri,
StringVector elemNames,
StringVector funcNames,
String scriptLang,
String scriptSrcURL,
String scriptSrc,
String systemId)
Construct a new extension namespace handler given all the information needed. |
Method Summary | |
Object |
callFunction(FuncExtFunction extFunction,
Vector args,
ExpressionContext exprContext)
Process a call to an XPath extension function |
Object |
callFunction(String funcName,
Vector args,
Object methodKey,
ExpressionContext exprContext)
Process a call to a function. |
boolean |
isElementAvailable(String element)
Tests whether a certain element name is known within this namespace. |
boolean |
isFunctionAvailable(String function)
Tests whether a certain function name is known within this namespace. |
void |
processElement(String localPart,
ElemTemplateElement element,
TransformerImpl transformer,
Stylesheet stylesheetTree,
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 |
Constructor Detail |
public ExtensionHandlerGeneral(String namespaceUri, StringVector elemNames, StringVector funcNames, String scriptLang, String scriptSrcURL, String scriptSrc, String systemId) throws TransformerException
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)
TransformerException
Method Detail |
public boolean isFunctionAvailable(String function)
isFunctionAvailable
in class ExtensionHandler
function
- name of the function being tested
public boolean isElementAvailable(String element)
isElementAvailable
in class ExtensionHandler
element
- name of the element being tested
public Object callFunction(String funcName, Vector args, Object methodKey, ExpressionContext exprContext) throws TransformerException
callFunction
in class ExtensionHandler
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.
TransformerException
- if parsing troublepublic Object callFunction(FuncExtFunction extFunction, Vector args, ExpressionContext exprContext) throws TransformerException
callFunction
in class ExtensionHandler
extFunction
- The XPath extension functionargs
- The arguments of the function call.exprContext
- The context in which this expression is being executed.
TransformerException
public void processElement(String localPart, ElemTemplateElement element, TransformerImpl transformer, Stylesheet stylesheetTree, Object methodKey) throws TransformerException, IOException
processElement
in class ExtensionHandler
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.
XSLProcessorException
- thrown if something goes wrong
while running the extension handler.
MalformedURLException
- if loading trouble
FileNotFoundException
- if loading trouble
IOException
- if loading trouble
TransformerException
- if parsing trouble
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