1 /*
2 * Copyright 2008 The Kuali Foundation
3 *
4 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
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.kuali.ole.sys.document.service.impl;
17
18 import java.util.Map;
19
20 import org.kuali.ole.sys.businessobject.AccountingLine;
21 import org.kuali.ole.sys.document.service.AccountingLineFieldRenderingTransformation;
22 import org.kuali.rice.kns.datadictionary.MaintainableFieldDefinition;
23 import org.kuali.rice.kns.web.ui.Field;
24 import org.kuali.rice.krad.valuefinder.ValueFinder;
25
26 /**
27 * A field transformer that populates a field with its default value
28 */
29 public class DefaultValuePopulationAccountingLineFieldRenderingTransformationImpl implements AccountingLineFieldRenderingTransformation {
30
31 /**
32 * Using the data dictionary definition for the field, determines what the default value for this field would be should there be a default value defined;
33 * note that this value may be wiped out by the value from the business object during that transformation (which presumably happends after this one)
34 * @see org.kuali.ole.sys.document.service.AccountingLineFieldRenderingTransformation#transformField(org.kuali.ole.sys.document.web.AccountingLineViewField)
35 */
36 public void transformField(AccountingLine accountingLine, Field field, MaintainableFieldDefinition fieldDefinition, Map unconvertedValues) {
37 populateFieldWithDefault(field, fieldDefinition);
38 }
39
40 /**
41 * Populates a maintenance field with its default value
42 * @param field the field to populate with a default value
43 * @param fieldDefinition the data dictionary definition of the field to transform
44 *
45 * KRAD Conversion: Performs the customization of the field properties
46 */
47 protected void populateFieldWithDefault(Field field, MaintainableFieldDefinition fieldDefinition) {
48 try {
49 Class defaultValueFinderClass = fieldDefinition.getDefaultValueFinderClass();
50 if (defaultValueFinderClass != null) {
51 field.setPropertyValue(((ValueFinder) defaultValueFinderClass.newInstance()).getValue());
52 }
53 }
54 catch (InstantiationException ie) {
55 throw new RuntimeException("Default Value Finder Class "+fieldDefinition.getDefaultValueFinderClass().getName()+" for property "+field.getPropertyName()+" could not be instantiated");
56 }
57 catch (IllegalAccessException e) {
58 throw new RuntimeException("Default Value Finder Class "+fieldDefinition.getDefaultValueFinderClass().getName()+" for property "+field.getPropertyName()+" was accessed illegally");
59 }
60 }
61 }