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Java > Open Source Codes > org > ofbiz > minilang > method > entityops > TransactionBegin


1 /*
2  * $Id: TransactionBegin.java 5462 2005-08-05 18:35:48Z jonesde $
3  *
4  * Copyright (c) 2001-2005 The Open For Business Project - www.ofbiz.org
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included
14  * in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
19  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
20  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
21  * OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
22  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23  */

24 package org.ofbiz.minilang.method.entityops;
25
26 import org.ofbiz.base.util.Debug;
27 import org.ofbiz.entity.transaction.GenericTransactionException;
28 import org.ofbiz.entity.transaction.TransactionUtil;
29 import org.ofbiz.minilang.SimpleMethod;
30 import org.ofbiz.minilang.method.ContextAccessor;
31 import org.ofbiz.minilang.method.MethodContext;
32 import org.ofbiz.minilang.method.MethodOperation;
33 import org.w3c.dom.Element JavaDoc;
34
35 /**
36  * Begins a transaction if one is not already in place; if does begin one puts true in the began-transaction-name env variable, otherwise it returns false.
37  *
38  * @author <a HREF="mailto:jonesde@ofbiz.org">David E. Jones</a>
39  * @version $Rev: 5462 $
40  * @since 2.0
41  */

42 public class TransactionBegin extends MethodOperation {
43     
44     public static final String JavaDoc module = TransactionBegin.class.getName();
45     
46     ContextAccessor beganTransactionAcsr;
47
48     public TransactionBegin(Element JavaDoc element, SimpleMethod simpleMethod) {
49         super(element, simpleMethod);
50         beganTransactionAcsr = new ContextAccessor(element.getAttribute("began-transaction-name"), "beganTransaction");
51     }
52
53     public boolean exec(MethodContext methodContext) {
54         boolean beganTransaction = false;
55         try {
56             beganTransaction = TransactionUtil.begin();
57         } catch (GenericTransactionException e) {
58             Debug.logError(e, "Could not begin transaction in simple-method, returning error.", module);
59             
60             String JavaDoc errMsg = "ERROR: Could not complete the " + simpleMethod.getShortDescription() + " process [error beginning a transaction: " + e.getMessage() + "]";
61             methodContext.setErrorReturn(errMsg, simpleMethod);
62             return false;
63         }
64         
65         beganTransactionAcsr.put(methodContext, new Boolean JavaDoc(beganTransaction));
66         return true;
67     }
68
69     public String JavaDoc rawString() {
70         // TODO: something more than the empty tag
71
return "<transaction-begin/>";
72     }
73     public String JavaDoc expandedString(MethodContext methodContext) {
74         // TODO: something more than a stub/dummy
75
return this.rawString();
76     }
77 }
78
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