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16 package org.kuali.rice.krad.datadictionary.validation.processor;
17
18 import java.util.ArrayList;
19 import java.util.List;
20
21 import org.kuali.rice.core.api.data.DataType;
22 import org.kuali.rice.krad.datadictionary.DataDictionaryEntry;
23 import org.kuali.rice.krad.datadictionary.exception.AttributeValidationException;
24 import org.kuali.rice.krad.datadictionary.validation.AttributeValueReader;
25 import org.kuali.rice.krad.datadictionary.validation.DictionaryObjectAttributeValueReader;
26 import org.kuali.rice.krad.datadictionary.validation.ValidationUtils;
27 import org.kuali.rice.krad.datadictionary.validation.capability.Constrainable;
28 import org.kuali.rice.krad.datadictionary.validation.capability.HierarchicallyConstrainable;
29 import org.kuali.rice.krad.datadictionary.validation.constraint.CaseConstraint;
30 import org.kuali.rice.krad.datadictionary.validation.constraint.Constraint;
31 import org.kuali.rice.krad.datadictionary.validation.constraint.DataTypeConstraint;
32 import org.kuali.rice.krad.datadictionary.validation.constraint.WhenConstraint;
33 import org.kuali.rice.krad.datadictionary.validation.result.DictionaryValidationResult;
34 import org.kuali.rice.krad.datadictionary.validation.result.ProcessorResult;
35 import org.kuali.rice.krad.service.KRADServiceLocatorWeb;
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44 public class CaseConstraintProcessor extends MandatoryElementConstraintProcessor<CaseConstraint> {
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46 private static final String CONSTRAINT_NAME = "case constraint";
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53 @Override
54 public ProcessorResult process(DictionaryValidationResult result, Object value, CaseConstraint caseConstraint,
55 AttributeValueReader attributeValueReader) throws AttributeValidationException {
56
57
58 if (null == caseConstraint) {
59 return new ProcessorResult(result.addNoConstraint(attributeValueReader, CONSTRAINT_NAME));
60 }
61 AttributeValueReader constraintAttributeReader = attributeValueReader.clone();
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63 String operator = (ValidationUtils.hasText(caseConstraint.getOperator())) ? caseConstraint.getOperator() :
64 "EQUALS";
65 AttributeValueReader fieldPathReader = (ValidationUtils.hasText(caseConstraint.getPropertyName())) ?
66 getChildAttributeValueReader(caseConstraint.getPropertyName(), attributeValueReader) :
67 attributeValueReader;
68
69 Constrainable caseField = (null != fieldPathReader) ? fieldPathReader.getDefinition(
70 fieldPathReader.getAttributeName()) : null;
71 Object fieldValue = (null != fieldPathReader) ? fieldPathReader.getValue(fieldPathReader.getAttributeName()) :
72 value;
73 DataType fieldDataType = (null != caseField && caseField instanceof DataTypeConstraint) ?
74 ((DataTypeConstraint) caseField).getDataType() : null;
75
76
77 if (fieldDataType == null) {
78 fieldDataType = DataType.STRING;
79 }
80
81
82 if (null == fieldValue) {
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84 return new ProcessorResult(result.addSkipped(attributeValueReader, CONSTRAINT_NAME), caseField,
85 fieldPathReader);
86 }
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88 List<Constraint> constraints = new ArrayList<Constraint>();
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90 for (WhenConstraint wc : caseConstraint.getWhenConstraint()) {
91 evaluateWhenConstraint(fieldValue, fieldDataType, operator, caseConstraint, wc, attributeValueReader,
92 constraints);
93 }
94 if (!constraints.isEmpty()) {
95 return new ProcessorResult(result.addSuccess(attributeValueReader, CONSTRAINT_NAME), null,
96 constraintAttributeReader, constraints);
97 }
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100 return new ProcessorResult(result.addSkipped(attributeValueReader, CONSTRAINT_NAME));
101 }
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114 private void evaluateWhenConstraint(Object fieldValue, DataType fieldDataType, String operator,
115 CaseConstraint caseConstraint, WhenConstraint wc, AttributeValueReader attributeValueReader,
116 List<Constraint> constraints) {
117 if (ValidationUtils.hasText(wc.getValuePath())) {
118 Object whenValue = null;
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121 AttributeValueReader whenValueReader = getChildAttributeValueReader(wc.getValuePath(),
122 attributeValueReader);
123 whenValue = whenValueReader.getValue(whenValueReader.getAttributeName());
124
125 if (ValidationUtils.compareValues(fieldValue, whenValue, fieldDataType, operator,
126 caseConstraint.isCaseSensitive(), dateTimeService) && null != wc.getConstraint()) {
127 constraints.add(wc.getConstraint());
128 }
129
130 } else {
131 List<Object> whenValueList = wc.getValues();
132
133 for (Object whenValue : whenValueList) {
134 if (ValidationUtils.compareValues(fieldValue, whenValue, fieldDataType, operator,
135 caseConstraint.isCaseSensitive(), dateTimeService) && null != wc.getConstraint()) {
136 constraints.add(wc.getConstraint());
137 break;
138 }
139 }
140 }
141 }
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143 @Override
144 public String getName() {
145 return CONSTRAINT_NAME;
146 }
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151 @Override
152 public Class<? extends Constraint> getConstraintType() {
153 return CaseConstraint.class;
154 }
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164 private AttributeValueReader getChildAttributeValueReader(String key,
165 AttributeValueReader attributeValueReader) throws AttributeValidationException {
166 String[] lookupPathTokens = ValidationUtils.getPathTokens(key);
167
168 AttributeValueReader localAttributeValueReader = attributeValueReader.clone();
169 for (int i = 0; i < lookupPathTokens.length; i++) {
170 for (Constrainable definition : localAttributeValueReader.getDefinitions()) {
171 String attributeName = definition.getName();
172 if (attributeName.equals(lookupPathTokens[i])) {
173 if (i == lookupPathTokens.length - 1) {
174 localAttributeValueReader.setAttributeName(attributeName);
175 return localAttributeValueReader;
176 }
177 if (definition instanceof HierarchicallyConstrainable) {
178 String childEntryName = ((HierarchicallyConstrainable) definition).getChildEntryName();
179 DataDictionaryEntry entry = KRADServiceLocatorWeb.getDataDictionaryService().getDataDictionary()
180 .getDictionaryObjectEntry(childEntryName);
181 Object value = attributeValueReader.getValue(attributeName);
182 attributeValueReader.setAttributeName(attributeName);
183 String attributePath = attributeValueReader.getPath();
184 localAttributeValueReader = new DictionaryObjectAttributeValueReader(value, childEntryName,
185 entry, attributePath);
186 }
187 break;
188 }
189 }
190 }
191 return null;
192 }
193
194 }