2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
19 * $Id: FuncContains.java 468655 2006-10-28 07:12:06Z minchau $
21 package org.apache.xpath.functions;
23 import org.apache.xpath.XPathContext;
24 import org.apache.xpath.objects.XBoolean;
25 import org.apache.xpath.objects.XObject;
28 * Execute the Contains() function.
31 public class FuncContains extends Function2Args
33 static final long serialVersionUID = 5084753781887919723L;
36 * Execute the function. The function must return
38 * @param xctxt The current execution context.
39 * @return A valid XObject.
41 * @throws javax.xml.transform.TransformerException
43 public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
46 String s1 = m_arg0.execute(xctxt).str();
47 String s2 = m_arg1.execute(xctxt).str();
49 // Add this check for JDK consistency for empty strings.
50 if (s1.length() == 0 && s2.length() == 0)
51 return XBoolean.S_TRUE;
53 int index = s1.indexOf(s2);
55 return (index > -1) ? XBoolean.S_TRUE : XBoolean.S_FALSE;