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16 package org.kuali.rice.krms.impl.repository;
17
18 import org.apache.commons.lang.StringUtils;
19 import org.kuali.rice.core.api.criteria.CriteriaLookupService;
20 import org.kuali.rice.core.api.criteria.GenericQueryResults;
21 import org.kuali.rice.core.api.criteria.Predicate;
22 import org.kuali.rice.core.api.criteria.QueryByCriteria;
23 import org.kuali.rice.krad.service.BusinessObjectService;
24 import org.kuali.rice.krad.service.KRADServiceLocator;
25 import org.kuali.rice.krms.api.repository.RuleRepositoryService;
26 import org.kuali.rice.krms.api.repository.agenda.AgendaTreeDefinition;
27 import org.kuali.rice.krms.api.repository.agenda.AgendaTreeRuleEntry;
28 import org.kuali.rice.krms.api.repository.agenda.AgendaTreeSubAgendaEntry;
29 import org.kuali.rice.krms.api.repository.context.ContextDefinition;
30 import org.kuali.rice.krms.api.repository.context.ContextSelectionCriteria;
31 import org.kuali.rice.krms.api.repository.rule.RuleDefinition;
32 import org.kuali.rice.krms.impl.util.KrmsImplConstants.PropertyNames;
33
34 import java.util.ArrayList;
35 import java.util.Collections;
36 import java.util.List;
37 import java.util.Map;
38
39 import static org.kuali.rice.core.api.criteria.PredicateFactory.*;
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43
44
45 public class RuleRepositoryServiceImpl implements RuleRepositoryService {
46 protected BusinessObjectService businessObjectService;
47 private CriteriaLookupService criteriaLookupService;
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52
53
54 @Override
55 public ContextDefinition selectContext(
56 ContextSelectionCriteria contextSelectionCriteria) {
57 if (contextSelectionCriteria == null){
58 throw new IllegalArgumentException("selection criteria is null");
59 }
60 if (StringUtils.isBlank(contextSelectionCriteria.getNamespaceCode())){
61 throw new IllegalArgumentException("selection criteria namespaceCode is null or blank");
62 }
63 QueryByCriteria queryCriteria = buildQuery(contextSelectionCriteria);
64 GenericQueryResults<ContextBo> results = getCriteriaLookupService().lookup(ContextBo.class, queryCriteria);
65
66 List<ContextBo> resultBos = results.getResults();
67
68
69 ContextDefinition result = null;
70 if (resultBos != null) {
71 if (resultBos.size() == 1) {
72 ContextBo bo = resultBos.iterator().next();
73 return ContextBo.to(bo);
74 }
75 else throw new IllegalArgumentException("ambiguous qualifiers");
76 }
77 return result;
78 }
79
80 @Override
81 public AgendaTreeDefinition getAgendaTree(String agendaId) {
82 if (StringUtils.isBlank(agendaId)){
83 throw new IllegalArgumentException("agenda id is null or blank");
84 }
85
86 AgendaBo agendaBo = getBusinessObjectService().findBySinglePrimaryKey(AgendaBo.class, agendaId);
87 String agendaItemId = agendaBo.getFirstItemId();
88
89
90 AgendaTreeDefinition.Builder myBuilder = AgendaTreeDefinition.Builder.create();
91 myBuilder.setAgendaId( agendaId );
92
93 if (agendaItemId != null) {
94 myBuilder = walkAgendaItemTree(agendaItemId, myBuilder);
95 }
96
97
98 return myBuilder.build();
99 }
100
101 @Override
102 public List<AgendaTreeDefinition> getAgendaTrees(List<String> agendaIds) {
103 List<AgendaTreeDefinition> agendaTrees = new ArrayList<AgendaTreeDefinition>();
104 for (String agendaId : agendaIds){
105 agendaTrees.add( getAgendaTree(agendaId) );
106 }
107 return Collections.unmodifiableList(agendaTrees);
108 }
109
110 @Override
111 public RuleDefinition getRule(String ruleId) {
112 if (StringUtils.isBlank(ruleId)){
113 return null;
114 }
115 RuleBo bo = getBusinessObjectService().findBySinglePrimaryKey(RuleBo.class, ruleId);
116 return RuleBo.to(bo);
117 }
118
119 @Override
120 public List<RuleDefinition> getRules(List<String> ruleIds) {
121 if (ruleIds == null) throw new IllegalArgumentException("ruleIds must not be null");
122
123
124 List<RuleBo> bos = null;
125 if (ruleIds.size() == 0) {
126 bos = Collections.emptyList();
127 } else {
128 QueryByCriteria.Builder qBuilder = QueryByCriteria.Builder.create();
129 List<Predicate> pList = new ArrayList<Predicate>();
130 qBuilder.setPredicates(in("id", ruleIds.toArray()));
131 GenericQueryResults<RuleBo> results = getCriteriaLookupService().lookup(RuleBo.class, qBuilder.build());
132
133 bos = results.getResults();
134 }
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137 ArrayList<RuleDefinition> rules = new ArrayList<RuleDefinition>();
138 for (RuleBo bo : bos) {
139 RuleDefinition rule = RuleBo.to(bo);
140 rules.add(rule);
141 }
142 return Collections.unmodifiableList(rules);
143 }
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149
150 private AgendaTreeDefinition.Builder walkAgendaItemTree(String agendaItemId, AgendaTreeDefinition.Builder builder){
151
152 if (StringUtils.isBlank(agendaItemId)){
153 return null;
154 }
155
156
157 AgendaItemBo agendaItemBo = getBusinessObjectService().findBySinglePrimaryKey(AgendaItemBo.class, agendaItemId);
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159
160
161 if (!StringUtils.isBlank( agendaItemBo.getRuleId() )){
162
163 AgendaTreeRuleEntry.Builder ruleEntryBuilder = AgendaTreeRuleEntry.Builder
164 .create(agendaItemBo.getId(), agendaItemBo.getRuleId());
165 ruleEntryBuilder.setRuleId( agendaItemBo.getRuleId() );
166 ruleEntryBuilder.setAgendaItemId( agendaItemBo.getId() );
167 if (agendaItemBo.getWhenTrueId() != null){
168
169
170 AgendaTreeDefinition.Builder myBuilder = AgendaTreeDefinition.Builder.create();
171 myBuilder.setAgendaId( agendaItemBo.getAgendaId() );
172 ruleEntryBuilder.setIfTrue( walkAgendaItemTree(agendaItemBo.getWhenTrueId(),myBuilder));
173 }
174 if (agendaItemBo.getWhenFalseId() != null){
175
176 AgendaTreeDefinition.Builder myBuilder = AgendaTreeDefinition.Builder.create();
177 myBuilder.setAgendaId( agendaItemBo.getAgendaId() );
178 ruleEntryBuilder.setIfFalse( walkAgendaItemTree(agendaItemBo.getWhenFalseId(), myBuilder));
179 }
180
181 builder.addRuleEntry( ruleEntryBuilder.build() );
182 }
183
184 if (!StringUtils.isBlank(agendaItemBo.getSubAgendaId())) {
185 AgendaTreeSubAgendaEntry.Builder subAgendaEntryBuilder =
186 AgendaTreeSubAgendaEntry.Builder.create(agendaItemBo.getId(), agendaItemBo.getSubAgendaId());
187 builder.addSubAgendaEntry( subAgendaEntryBuilder.build() );
188 }
189
190
191 if (!StringUtils.isBlank( agendaItemBo.getAlwaysId() )){
192 builder = walkAgendaItemTree( agendaItemBo.getAlwaysId(), builder);
193
194 }
195 return builder;
196 }
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205
206 private QueryByCriteria buildQuery( ContextSelectionCriteria selectionCriteria ){
207 Predicate p;
208 QueryByCriteria.Builder qBuilder = QueryByCriteria.Builder.create();
209 List<Predicate> pList = new ArrayList<Predicate>();
210 if (selectionCriteria.getNamespaceCode() != null){
211 p = equal(PropertyNames.Context.NAMESPACE, selectionCriteria.getNamespaceCode());
212 pList.add(p);
213 }
214 if (selectionCriteria.getName() != null){
215 p = equal(PropertyNames.Context.NAME, selectionCriteria.getName());
216 pList.add(p);
217 }
218 if (selectionCriteria.getContextQualifiers() != null){
219 for (Map.Entry<String, String> entry : selectionCriteria.getContextQualifiers().entrySet()){
220 p = and(equal(PropertyNames.Context.ATTRIBUTE_BOS
221 + "." + PropertyNames.BaseAttribute.ATTRIBUTE_DEFINITION
222 + "." + PropertyNames.KrmsAttributeDefinition.NAME, entry.getKey()),
223 equal(PropertyNames.Context.ATTRIBUTE_BOS
224 + "." + PropertyNames.BaseAttribute.VALUE, entry.getValue()));
225 pList.add(p);
226 }
227 }
228 Predicate[] preds = new Predicate[pList.size()];
229 pList.toArray(preds);
230 qBuilder.setPredicates(and(preds));
231 return qBuilder.build();
232 }
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239 public void setBusinessObjectService(final BusinessObjectService businessObjectService) {
240 this.businessObjectService = businessObjectService;
241 }
242
243 protected BusinessObjectService getBusinessObjectService() {
244 if ( businessObjectService == null ) {
245
246 businessObjectService = KRADServiceLocator.getBusinessObjectService();
247 }
248 return businessObjectService;
249 }
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255
256 public void setCriteriaLookupService(final CriteriaLookupService criteriaLookupService) {
257 this.criteriaLookupService = criteriaLookupService;
258 }
259
260 protected CriteriaLookupService getCriteriaLookupService() {
261 return criteriaLookupService;
262 }
263
264 }