META-INF.modules.java.xml.classes.com.sun.org.apache.xpath.internal.functions.FuncConcat Maven / Gradle / Ivy
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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.
*/
package com.sun.org.apache.xpath.internal.functions;
import com.sun.org.apache.xalan.internal.res.XSLMessages;
import com.sun.org.apache.xpath.internal.XPathContext;
import com.sun.org.apache.xpath.internal.objects.XObject;
import com.sun.org.apache.xpath.internal.objects.XString;
/**
* Execute the Concat() function.
* @xsl.usage advanced
*/
public class FuncConcat extends FunctionMultiArgs
{
static final long serialVersionUID = 1737228885202314413L;
/**
* 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
{
StringBuffer sb = new StringBuffer();
// Compiler says we must have at least two arguments.
sb.append(m_arg0.execute(xctxt).str());
sb.append(m_arg1.execute(xctxt).str());
if (null != m_arg2)
sb.append(m_arg2.execute(xctxt).str());
if (null != m_args)
{
for (int i = 0; i < m_args.length; i++)
{
sb.append(m_args[i].execute(xctxt).str());
}
}
return new XString(sb.toString());
}
/**
* Check that the number of arguments passed to this function is correct.
*
*
* @param argNum The number of arguments that is being passed to the function.
*
* @throws WrongNumberArgsException
*/
public void checkNumberArgs(int argNum) throws WrongNumberArgsException
{
if (argNum < 2)
reportWrongNumberArgs();
}
/**
* Constructs and throws a WrongNumberArgException with the appropriate
* message for this function object.
*
* @throws WrongNumberArgsException
*/
protected void reportWrongNumberArgs() throws WrongNumberArgsException {
throw new WrongNumberArgsException(XSLMessages.createXPATHMessage("gtone", null));
}
}