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Java > Open Source Codes > org > ofbiz > minilang > method > envops > ClearField


1 /*
2  * $Id: ClearField.java 5462 2005-08-05 18:35:48Z jonesde $
3  *
4  * Copyright (c) 2001, 2002 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.envops;
25
26 import java.util.*;
27
28 import org.w3c.dom.*;
29
30 import org.ofbiz.base.util.*;
31 import org.ofbiz.minilang.*;
32 import org.ofbiz.minilang.method.*;
33
34 /**
35  * Clears the specified field
36  *
37  * @author <a HREF="mailto:jonesde@ofbiz.org">David E. Jones</a>
38  * @version $Rev: 5462 $
39  * @since 2.0
40  */
41 public class ClearField extends MethodOperation {
42     
43     public static final String JavaDoc module = ClearField.class.getName();
44     
45     ContextAccessor mapAcsr;
46     ContextAccessor fieldAcsr;
47
48     public ClearField(Element element, SimpleMethod simpleMethod) {
49         super(element, simpleMethod);
50         mapAcsr = new ContextAccessor(element.getAttribute("map-name"));
51         fieldAcsr = new ContextAccessor(element.getAttribute("field-name"));
52     }
53
54     public boolean exec(MethodContext methodContext) {
55         if (!mapAcsr.isEmpty()) {
56             Map toMap = (Map) mapAcsr.get(methodContext);
57
58             if (toMap == null) {
59                 // it seems silly to create a new map, but necessary since whenever
60 // an env field like a Map or List is referenced it should be created, even if empty
61 if (Debug.verboseOn()) Debug.logVerbose("Map not found with name " + mapAcsr + ", creating new map", module);
62                 toMap = new HashMap();
63                 mapAcsr.put(methodContext, toMap);
64             }
65
66             fieldAcsr.put(toMap, null, methodContext);
67         } else {
68             fieldAcsr.put(methodContext, null);
69         }
70
71         return true;
72     }
73
74     public String JavaDoc rawString() {
75         return "<clear-field field-name=\"" + this.fieldAcsr + "\" map-name=\"" + this.mapAcsr + "\"/>";
76     }
77     public String JavaDoc expandedString(MethodContext methodContext) {
78         // TODO: something more than a stub/dummy
79 return this.rawString();
80     }
81 }
82
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