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/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* 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.
*/
package com.sun.org.apache.xpath.internal.functions;
import com.sun.org.apache.xalan.internal.templates.Constants;
// J2SE does not support Xalan interpretive
/*
import com.sun.org.apache.xalan.internal.transformer.TransformerImpl;
*/
import com.sun.org.apache.xml.internal.utils.QName;
import com.sun.org.apache.xpath.internal.ExtensionsProvider;
import com.sun.org.apache.xpath.internal.XPathContext;
import com.sun.org.apache.xpath.internal.objects.XBoolean;
import com.sun.org.apache.xpath.internal.objects.XObject;
/**
* Execute the ExtElementAvailable() function.
* @xsl.usage advanced
*/
public class FuncExtElementAvailable extends FunctionOneArg
{
static final long serialVersionUID = -472533699257968546L;
/**
* Execute the function. The function must return
* a valid object.
* @param xctxt The current execution context.
* @return A valid XObject.
*
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
{
String prefix;
String namespace;
String methName;
String fullName = m_arg0.execute(xctxt).str();
int indexOfNSSep = fullName.indexOf(':');
if (indexOfNSSep < 0)
{
prefix = "";
namespace = Constants.S_XSLNAMESPACEURL;
methName = fullName;
}
else
{
prefix = fullName.substring(0, indexOfNSSep);
namespace = xctxt.getNamespaceContext().getNamespaceForPrefix(prefix);
if (null == namespace)
return XBoolean.S_FALSE;
methName= fullName.substring(indexOfNSSep + 1);
}
if (namespace.equals(Constants.S_XSLNAMESPACEURL)
|| namespace.equals(Constants.S_BUILTIN_EXTENSIONS_URL)) {
// J2SE does not support Xalan interpretive
/*
try {
TransformerImpl transformer = (TransformerImpl) xctxt.getOwnerObject();
return transformer.getStylesheet().getAvailableElements().containsKey(
new QName(namespace, methName))
? XBoolean.S_TRUE : XBoolean.S_FALSE;
} catch (Exception e) {
return XBoolean.S_FALSE;
}
*/
return XBoolean.S_FALSE;
} else {
//dml
ExtensionsProvider extProvider = (ExtensionsProvider)xctxt.getOwnerObject();
return extProvider.elementAvailable(namespace, methName)
? XBoolean.S_TRUE : XBoolean.S_FALSE;
}
}
}