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Java > Open Source Codes > org > apache > taglibs > standard > tag > el > sql > TransactionTag


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.taglibs.standard.tag.el.sql;
17
18 import javax.servlet.jsp.JspException JavaDoc;
19
20 import org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager;
21 import org.apache.taglibs.standard.tag.common.sql.TransactionTagSupport;
22
23 /**
24  * Subclass for the JSTL library with EL support.
25  *
26  * @author Hans Bergsten
27  * @author Justyna Horwat
28  */
29 public class TransactionTag extends TransactionTagSupport {
30     
31     private String JavaDoc dataSourceEL;
32     private String JavaDoc isolationEL;
33
34     public void setDataSource(String JavaDoc dataSourceEL) {
35     this.dataSourceEL = dataSourceEL;
36     this.dataSourceSpecified = true;
37     }
38
39     public void setIsolation(String JavaDoc isolationEL) {
40     this.isolationEL = isolationEL;
41     }
42
43     public int doStartTag() throws JspException JavaDoc {
44     if (dataSourceEL != null) {
45         rawDataSource = (Object JavaDoc)
46         ExpressionEvaluatorManager.evaluate("dataSource",
47             dataSourceEL, Object JavaDoc.class, this, pageContext);
48     }
49
50     if (isolationEL != null) {
51         isolationEL = (String JavaDoc)
52         ExpressionEvaluatorManager.evaluate("isolation",
53             isolationEL, String JavaDoc.class, this, pageContext);
54             super.setIsolation(isolationEL);
55     }
56
57     return super.doStartTag();
58     }
59 }
60
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