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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: ElemExtensionDecl.java 468643 2006-10-28 06:56:03Z minchau $
*/
package org.apache.xalan.templates;
import javax.xml.transform.TransformerException;
import org.apache.xalan.extensions.ExtensionNamespaceSupport;
import org.apache.xalan.extensions.ExtensionNamespacesManager;
import org.apache.xalan.res.XSLMessages;
import org.apache.xalan.res.XSLTErrorResources;
import org.apache.xalan.transformer.TransformerImpl;
import org.apache.xml.utils.StringVector;
/**
* Implement the declaration of an extension element
* @xsl.usage internal
*/
public class ElemExtensionDecl extends ElemTemplateElement
{
static final long serialVersionUID = -4692738885172766789L;
/**
* Constructor ElemExtensionDecl
*
*/
public ElemExtensionDecl()
{
// System.out.println("ElemExtensionDecl ctor");
}
/** Prefix string for this extension element.
* @serial */
private String m_prefix = null;
/**
* Set the prefix for this extension element
*
*
* @param v Prefix to set for this extension element
*/
public void setPrefix(String v)
{
m_prefix = v;
}
/**
* Get the prefix for this extension element
*
*
* @return Prefix for this extension element
*/
public String getPrefix()
{
return m_prefix;
}
/** StringVector holding the names of functions defined in this extension.
* @serial */
private StringVector m_functions = new StringVector();
/**
* Set the names of functions defined in this extension
*
*
* @param v StringVector holding the names of functions defined in this extension
*/
public void setFunctions(StringVector v)
{
m_functions = v;
}
/**
* Get the names of functions defined in this extension
*
*
* @return StringVector holding the names of functions defined in this extension
*/
public StringVector getFunctions()
{
return m_functions;
}
/**
* Get a function at a given index in this extension element
*
*
* @param i Index of function to get
*
* @return Name of Function at given index
*
* @throws ArrayIndexOutOfBoundsException
*/
public String getFunction(int i) throws ArrayIndexOutOfBoundsException
{
if (null == m_functions)
throw new ArrayIndexOutOfBoundsException();
return (String) m_functions.elementAt(i);
}
/**
* Get count of functions defined in this extension element
*
*
* @return count of functions defined in this extension element
*/
public int getFunctionCount()
{
return (null != m_functions) ? m_functions.size() : 0;
}
/** StringVector of elements defined in this extension.
* @serial */
private StringVector m_elements = null;
/**
* Set StringVector of elements for this extension
*
*
* @param v StringVector of elements to set
*/
public void setElements(StringVector v)
{
m_elements = v;
}
/**
* Get StringVector of elements defined for this extension
*
*
* @return StringVector of elements defined for this extension
*/
public StringVector getElements()
{
return m_elements;
}
/**
* Get the element at the given index
*
*
* @param i Index of element to get
*
* @return The element at the given index
*
* @throws ArrayIndexOutOfBoundsException
*/
public String getElement(int i) throws ArrayIndexOutOfBoundsException
{
if (null == m_elements)
throw new ArrayIndexOutOfBoundsException();
return (String) m_elements.elementAt(i);
}
/**
* Return the count of elements defined for this extension element
*
*
* @return the count of elements defined for this extension element
*/
public int getElementCount()
{
return (null != m_elements) ? m_elements.size() : 0;
}
/**
* Get an int constant identifying the type of element.
* @see org.apache.xalan.templates.Constants
*
* @return The token ID for this element
*/
public int getXSLToken()
{
return Constants.ELEMNAME_EXTENSIONDECL;
}
public void compose(StylesheetRoot sroot) throws TransformerException
{
super.compose(sroot);
String prefix = getPrefix();
String declNamespace = getNamespaceForPrefix(prefix);
String lang = null;
String srcURL = null;
String scriptSrc = null;
if (null == declNamespace)
throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_NO_NAMESPACE_DECL, new Object[]{prefix}));
//"Prefix " + prefix does not have a corresponding namespace declaration");
for (ElemTemplateElement child = getFirstChildElem(); child != null;
child = child.getNextSiblingElem())
{
if (Constants.ELEMNAME_EXTENSIONSCRIPT == child.getXSLToken())
{
ElemExtensionScript sdecl = (ElemExtensionScript) child;
lang = sdecl.getLang();
srcURL = sdecl.getSrc();
ElemTemplateElement childOfSDecl = sdecl.getFirstChildElem();
if (null != childOfSDecl)
{
if (Constants.ELEMNAME_TEXTLITERALRESULT
== childOfSDecl.getXSLToken())
{
ElemTextLiteral tl = (ElemTextLiteral) childOfSDecl;
char[] chars = tl.getChars();
scriptSrc = new String(chars);
if (scriptSrc.trim().length() == 0)
scriptSrc = null;
}
}
}
}
if (null == lang)
lang = "javaclass";
if (lang.equals("javaclass") && (scriptSrc != null))
throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_ELEM_CONTENT_NOT_ALLOWED, new Object[]{scriptSrc}));
//"Element content not allowed for lang=javaclass " + scriptSrc);
// Register the extension namespace if it has not already been registered.
ExtensionNamespaceSupport extNsSpt = null;
ExtensionNamespacesManager extNsMgr = sroot.getExtensionNamespacesManager();
if (extNsMgr.namespaceIndex(declNamespace,
extNsMgr.getExtensions()) == -1)
{
if (lang.equals("javaclass"))
{
if (null == srcURL)
{
extNsSpt = extNsMgr.defineJavaNamespace(declNamespace);
}
else if (extNsMgr.namespaceIndex(srcURL,
extNsMgr.getExtensions()) == -1)
{
extNsSpt = extNsMgr.defineJavaNamespace(declNamespace, srcURL);
}
}
else // not java
{
String handler = "org.apache.xalan.extensions.ExtensionHandlerGeneral";
Object [] args = {declNamespace, this.m_elements, this.m_functions,
lang, srcURL, scriptSrc, getSystemId()};
extNsSpt = new ExtensionNamespaceSupport(declNamespace, handler, args);
}
}
if (extNsSpt != null)
extNsMgr.registerExtension(extNsSpt);
}
/**
* This function will be called on top-level elements
* only, just before the transform begins.
*
* @param transformer The XSLT TransformerFactory.
*
* @throws TransformerException
*/
public void runtimeInit(TransformerImpl transformer) throws TransformerException
{
/* //System.out.println("ElemExtensionDecl.runtimeInit()");
String lang = null;
String srcURL = null;
String scriptSrc = null;
String prefix = getPrefix();
String declNamespace = getNamespaceForPrefix(prefix);
if (null == declNamespace)
throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_NO_NAMESPACE_DECL, new Object[]{prefix}));
//"Prefix " + prefix does not have a corresponding namespace declaration");
for (ElemTemplateElement child = getFirstChildElem(); child != null;
child = child.getNextSiblingElem())
{
if (Constants.ELEMNAME_EXTENSIONSCRIPT == child.getXSLToken())
{
ElemExtensionScript sdecl = (ElemExtensionScript) child;
lang = sdecl.getLang();
srcURL = sdecl.getSrc();
ElemTemplateElement childOfSDecl = sdecl.getFirstChildElem();
if (null != childOfSDecl)
{
if (Constants.ELEMNAME_TEXTLITERALRESULT
== childOfSDecl.getXSLToken())
{
ElemTextLiteral tl = (ElemTextLiteral) childOfSDecl;
char[] chars = tl.getChars();
scriptSrc = new String(chars);
if (scriptSrc.trim().length() == 0)
scriptSrc = null;
}
}
}
}
if (null == lang)
lang = "javaclass";
if (lang.equals("javaclass") && (scriptSrc != null))
throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_ELEM_CONTENT_NOT_ALLOWED, new Object[]{scriptSrc}));
//"Element content not allowed for lang=javaclass " + scriptSrc);
// Instantiate a handler for this extension namespace.
ExtensionsTable etable = transformer.getExtensionsTable();
ExtensionHandler nsh = etable.get(declNamespace);
// If we have no prior ExtensionHandler for this namespace, we need to
// create one.
// If the script element is for javaclass, this is our special compiled java.
// Element content is not supported for this so we throw an exception if
// it is provided. Otherwise, we look up the srcURL to see if we already have
// an ExtensionHandler.
if (null == nsh)
{
if (lang.equals("javaclass"))
{
if (null == srcURL)
{
nsh = etable.makeJavaNamespace(declNamespace);
}
else
{
nsh = etable.get(srcURL);
if (null == nsh)
{
nsh = etable.makeJavaNamespace(srcURL);
}
}
}
else // not java
{
nsh = new ExtensionHandlerGeneral(declNamespace, this.m_elements,
this.m_functions, lang, srcURL,
scriptSrc, getSystemId());
// System.out.println("Adding NS Handler: declNamespace = "+
// declNamespace+", lang = "+lang+", srcURL = "+
// srcURL+", scriptSrc="+scriptSrc);
}
etable.addExtensionNamespace(declNamespace, nsh);
}*/
}
}
