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Java > Open Source Codes > org > ofbiz > minilang > method > FieldObject


1 /*
2  * $Id: FieldObject.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;
25
26 import java.util.*;
27
28 import org.w3c.dom.*;
29 import org.ofbiz.base.util.*;
30 import org.ofbiz.minilang.*;
31
32 /**
33  * A type of MethodObject that represents an Object value in a certain location
34  *
35  * @author <a HREF="mailto:jonesde@ofbiz.org">David E. Jones</a>
36  * @version $Rev: 5462 $
37  * @since 2.0
38  */
39 public class FieldObject extends MethodObject {
40     
41     public static final String JavaDoc module = FieldObject.class.getName();
42     
43     ContextAccessor fieldAcsr;
44     ContextAccessor mapAcsr;
45     String JavaDoc type;
46
47     public FieldObject(Element element, SimpleMethod simpleMethod) {
48         super(element, simpleMethod);
49         fieldAcsr = new ContextAccessor(element.getAttribute("field-name"));
50         mapAcsr = new ContextAccessor(element.getAttribute("map-name"));
51         type = element.getAttribute("type");
52         if (UtilValidate.isEmpty(type)) {
53             type = "String";
54         }
55     }
56
57     /** Get the name for the type of the object */
58     public String JavaDoc getTypeName() {
59         return type;
60     }
61     
62     public Class JavaDoc getTypeClass(ClassLoader JavaDoc loader) {
63         try {
64             return ObjectType.loadClass(type, loader);
65         } catch (ClassNotFoundException JavaDoc e) {
66             Debug.logError(e, "Could not find class for type: " + type, module);
67             return null;
68         }
69     }
70     
71     public Object JavaDoc getObject(MethodContext methodContext) {
72         Object JavaDoc fieldVal = null;
73
74         if (!mapAcsr.isEmpty()) {
75             Map fromMap = (Map) mapAcsr.get(methodContext);
76            if (fromMap == null) {
77                 Debug.logWarning("Map not found with name " + mapAcsr + ", not getting Object value, returning null.", module);
78                 return null;
79             }
80             fieldVal = fieldAcsr.get(fromMap, methodContext);
81         } else {
82             // no map name, try the env
83 fieldVal = fieldAcsr.get(methodContext);
84         }
85
86         if (fieldVal == null) {
87             if (Debug.infoOn()) Debug.logInfo("Field value not found with name " + fieldAcsr + " in Map with name " + mapAcsr + ", not getting Object value, returning null.", module);
88             return null;
89         }
90         
91         return fieldVal;
92     }
93 }
94
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