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      1 /*
      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
      9  *
     10  *     http://www.apache.org/licenses/LICENSE-2.0
     11  *
     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.
     17  */
     18 /*
     19  * $Id: FuncStringLength.java 468655 2006-10-28 07:12:06Z minchau $
     20  */
     21 package org.apache.xpath.functions;
     22 
     23 import org.apache.xpath.XPathContext;
     24 import org.apache.xpath.objects.XNumber;
     25 import org.apache.xpath.objects.XObject;
     26 
     27 /**
     28  * Execute the StringLength() function.
     29  * @xsl.usage advanced
     30  */
     31 public class FuncStringLength extends FunctionDef1Arg
     32 {
     33     static final long serialVersionUID = -159616417996519839L;
     34 
     35   /**
     36    * Execute the function.  The function must return
     37    * a valid object.
     38    * @param xctxt The current execution context.
     39    * @return A valid XObject.
     40    *
     41    * @throws javax.xml.transform.TransformerException
     42    */
     43   public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
     44   {
     45     return new XNumber(getArg0AsString(xctxt).length());
     46   }
     47 }
     48