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Java > Open Source Codes > org > compiere > model > Callout


1 /******************************************************************************
2  * The contents of this file are subject to the Compiere License Version 1.1
3  * ("License"); You may not use this file except in compliance with the License
4  * You may obtain a copy of the License at http://www.compiere.org/license.html
5  * Software distributed under the License is distributed on an "AS IS" basis,
6  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
7  * the specific language governing rights and limitations under the License.
8  * The Original Code is Compiere ERP & CRM Business Solution
9  * The Initial Developer of the Original Code is Jorg Janke and ComPiere, Inc.
10  * Portions created by Jorg Janke are Copyright (C) 1999-2001 Jorg Janke, parts
11  * created by ComPiere are Copyright (C) ComPiere, Inc.; All Rights Reserved.
12  * Contributor(s): ______________________________________.
13  *****************************************************************************/

14 package org.compiere.model;
15
16 import java.util.*;
17
18 /**
19  * Callout Interface for Callout.
20  * Used in MTab and ImpFormatRow
21  *
22  * @author Jorg Janke
23  * @version $Id: Callout.java,v 1.3 2002/08/12 01:55:12 danb Exp $
24  */

25 public interface Callout
26 {
27     /**
28      * Start Callout.
29      * <p>
30      * Callout's are used for cross field validation and setting values in other fields
31      * when returning a non empty (error message) string, an exception is raised
32      * <p>
33      * When invoked, the Tab model has the new value!
34      *
35      * @param ctx Context
36      * @param method Method name
37      * @param WindowNo current Window No
38      * @param mTab Model Tab
39      * @param mField Model Field
40      * @param value The new value
41      * @param oldValue The old value
42      * @return Error message or ""
43      */

44     public String JavaDoc start (Properties ctx, String JavaDoc method, int WindowNo,
45         MTab mTab, MField mField, Object JavaDoc value, Object JavaDoc oldValue);
46
47     /**
48      * Conversion Rules.
49      * Convert a String
50      *
51      * @param method in notation User_Function
52      * @param value the value
53      * @return converted String or Null if no method found
54      */

55     public String JavaDoc convert (String JavaDoc method, String JavaDoc value);
56
57 } // callout
58
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