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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
7    * "License"); you may not use this file except in compliance
8    * with the License.  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,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  
20  package org.apache.myfaces.tobago.internal.taglib.extension;
21  
22  import javax.el.ValueExpression;
23  import javax.servlet.jsp.JspFactory;
24  import javax.servlet.jsp.tagext.BodyTagSupport;
25  import javax.servlet.jsp.tagext.JspIdConsumer;
26  
27  public class TobagoExtensionBodyTagSupport extends BodyTagSupport implements JspIdConsumer {
28  
29    protected static final String PREFIX = "tx";
30    
31    private String jspId;
32    private int idSuffix;
33      
34    protected ValueExpression createStringValueExpression(String expression) {
35      return JspFactory.getDefaultFactory().getJspApplicationContext(pageContext.getServletContext())
36          .getExpressionFactory().createValueExpression(pageContext.getELContext(), expression, String.class);
37    }
38    
39    public void setJspId(String jspId) {
40      this.jspId = jspId;
41    }
42  
43    protected String nextJspId() {
44      return jspId + PREFIX + idSuffix++;
45    }
46  
47    public void release() {
48      super.release();
49      jspId = null;
50      idSuffix = 0;
51    }
52  }