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1   /**
2    * Copyright 2005-2012 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.rice.krms.impl.rule;
17  
18  import org.apache.commons.collections.CollectionUtils;
19  import org.apache.commons.lang.StringUtils;
20  import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
21  import org.kuali.rice.core.api.uif.RemotableAttributeError;
22  import org.kuali.rice.core.api.util.RiceKeyConstants;
23  import org.kuali.rice.krad.bo.GlobalBusinessObject;
24  import org.kuali.rice.krad.bo.PersistableBusinessObject;
25  import org.kuali.rice.krad.maintenance.MaintenanceDocument;
26  import org.kuali.rice.kns.maintenance.rules.MaintenanceDocumentRuleBase;
27  import org.kuali.rice.krad.util.KRADConstants;
28  import org.kuali.rice.krms.api.KrmsConstants;
29  import org.kuali.rice.krms.api.repository.agenda.AgendaDefinition;
30  import org.kuali.rice.krms.api.repository.rule.RuleDefinition;
31  import org.kuali.rice.krms.api.repository.type.KrmsTypeDefinition;
32  import org.kuali.rice.krms.api.repository.type.KrmsTypeRepositoryService;
33  import org.kuali.rice.krms.framework.type.ActionTypeService;
34  import org.kuali.rice.krms.framework.type.AgendaTypeService;
35  import org.kuali.rice.krms.impl.authorization.AgendaAuthorizationService;
36  import org.kuali.rice.krms.impl.repository.ActionBo;
37  import org.kuali.rice.krms.impl.repository.AgendaBo;
38  import org.kuali.rice.krms.impl.repository.AgendaBoService;
39  import org.kuali.rice.krms.impl.repository.AgendaItemBo;
40  import org.kuali.rice.krms.impl.repository.ContextBoService;
41  import org.kuali.rice.krms.impl.repository.KrmsRepositoryServiceLocator;
42  import org.kuali.rice.krms.impl.repository.RuleBo;
43  import org.kuali.rice.krms.impl.repository.RuleBoService;
44  import org.kuali.rice.krms.impl.ui.AgendaEditor;
45  import org.kuali.rice.krms.impl.util.KRMSPropertyConstants;
46  
47  import java.util.List;
48  import java.util.Map;
49  
50  import javax.xml.namespace.QName;
51  
52  /**
53   * This class contains the rules for the AgendaEditor.
54   */
55  public class AgendaEditorBusRule extends MaintenanceDocumentRuleBase {
56  
57  
58      protected boolean primaryKeyCheck(MaintenanceDocument document) {
59          // default to success if no failures
60          boolean success = true;
61          Class<?> dataObjectClass = document.getNewMaintainableObject().getDataObjectClass();
62  
63          // Since the dataObject is a wrapper class we need to return the agendaBo instead.
64          Object oldBo = ((AgendaEditor) document.getOldMaintainableObject().getDataObject()).getAgenda();
65          Object newDataObject = ((AgendaEditor) document.getNewMaintainableObject().getDataObject()).getAgenda();
66  
67          // We dont do primaryKeyChecks on Global Business Object maintenance documents. This is
68          // because it doesnt really make any sense to do so, given the behavior of Globals. When a
69          // Global Document completes, it will update or create a new record for each BO in the list.
70          // As a result, there's no problem with having existing BO records in the system, they will
71          // simply get updated.
72          if (newDataObject instanceof GlobalBusinessObject) {
73              return success;
74          }
75  
76          // fail and complain if the person has changed the primary keys on
77          // an EDIT maintenance document.
78          if (document.isEdit()) {
79              if (!getDataObjectMetaDataService().equalsByPrimaryKeys(oldBo, newDataObject)) {
80                  // add a complaint to the errors
81                  putDocumentError(KRADConstants.DOCUMENT_ERRORS,
82                          RiceKeyConstants.ERROR_DOCUMENT_MAINTENANCE_PRIMARY_KEYS_CHANGED_ON_EDIT,
83                          getHumanReadablePrimaryKeyFieldNames(dataObjectClass));
84                  success &= false;
85              }
86          }
87  
88          // fail and complain if the person has selected a new object with keys that already exist
89          // in the DB.
90          else if (document.isNew()) {
91  
92              // TODO: when/if we have standard support for DO retrieval, do this check for DO's
93              if (newDataObject instanceof PersistableBusinessObject) {
94  
95                  // get a map of the pk field names and values
96                  Map<String, ?> newPkFields = getDataObjectMetaDataService().getPrimaryKeyFieldValues(newDataObject);
97  
98                  // TODO: Good suggestion from Aaron, dont bother checking the DB, if all of the
99                  // objects PK fields dont have values. If any are null or empty, then
100                 // we're done. The current way wont fail, but it will make a wasteful
101                 // DB call that may not be necessary, and we want to minimize these.
102 
103                 // attempt to do a lookup, see if this object already exists by these Primary Keys
104                 PersistableBusinessObject testBo = getBoService()
105                         .findByPrimaryKey(dataObjectClass.asSubclass(PersistableBusinessObject.class), newPkFields);
106 
107                 // if the retrieve was successful, then this object already exists, and we need
108                 // to complain
109                 if (testBo != null) {
110                     putDocumentError(KRADConstants.DOCUMENT_ERRORS,
111                             RiceKeyConstants.ERROR_DOCUMENT_MAINTENANCE_KEYS_ALREADY_EXIST_ON_CREATE_NEW,
112                             getHumanReadablePrimaryKeyFieldNames(dataObjectClass));
113                     success &= false;
114                 }
115             }
116         }
117 
118         return success;
119     }
120 
121 
122 
123 
124     protected boolean processCustomSaveDocumentBusinessRules(MaintenanceDocument document) {
125         boolean isValid = true;
126 
127         AgendaEditor agendaEditor = (AgendaEditor) document.getNewMaintainableObject().getDataObject();
128         AgendaEditor oldAgendaEditor = (AgendaEditor) document.getOldMaintainableObject().getDataObject();
129         isValid &= validContext(agendaEditor);
130         isValid &= validAgendaName(agendaEditor);
131         isValid &= validContextAgendaNamespace(agendaEditor);
132         isValid &= validAgendaTypeAndAttributes(oldAgendaEditor, agendaEditor);
133 
134         return isValid;
135     }
136 
137     /**
138      * Check if the context exists and if user has authorization to edit agendas under this context.
139      * @param agendaEditor
140      * @return true if the context exist and has authorization, false otherwise
141      */
142     public boolean validContext(AgendaEditor agendaEditor) {
143         boolean isValid = true;
144 
145         try {
146             if (getContextBoService().getContextByContextId(agendaEditor.getAgenda().getContextId()) == null) {
147                 this.putFieldError(KRMSPropertyConstants.Agenda.CONTEXT, "error.agenda.invalidContext");
148                 isValid = false;
149             } else {
150                 if (!getAgendaAuthorizationService().isAuthorized(KrmsConstants.MAINTAIN_KRMS_AGENDA,
151                         agendaEditor.getAgenda().getContextId())) {
152                     this.putFieldError(KRMSPropertyConstants.Agenda.CONTEXT, "error.agenda.unauthorizedContext");
153                     isValid = false;
154                 }
155             }
156         }
157         catch (IllegalArgumentException e) {
158             this.putFieldError(KRMSPropertyConstants.Agenda.CONTEXT, "error.agenda.invalidContext");
159             isValid = false;
160         }
161 
162         return isValid;
163     }
164 
165     /**
166      * Check if for namespace.
167      * @param agendaEditor
168      * @return
169      */
170     public boolean validContextAgendaNamespace(AgendaEditor agendaEditor) {
171         // TODO validate through krms_cntxt_vld_agenda_t
172         if (StringUtils.isBlank(agendaEditor.getNamespace())) {
173             this.putFieldError(KRMSPropertyConstants.Context.NAMESPACE, "error.context.invalidNamespace");
174             return false;
175         }
176         return true;
177     }
178 
179     private boolean validAgendaTypeAndAttributes( AgendaEditor oldAgendaEditor, AgendaEditor newAgendaEditor) {
180         if (validAgendaType(newAgendaEditor.getAgenda().getTypeId(), newAgendaEditor.getAgenda().getContextId())) {
181             return validAgendaAttributes(oldAgendaEditor, newAgendaEditor);
182         } else {
183             return false;
184         }
185     }
186     private boolean validAgendaType(String typeId, String contextId) {
187         boolean isValid = true;
188 
189         if (!StringUtils.isBlank(typeId) && !StringUtils.isBlank(contextId)) {
190             if (getKrmsTypeRepositoryService().getAgendaTypeByAgendaTypeIdAndContextId(typeId, contextId) != null) {
191                 return true;
192             } else {
193                 this.putFieldError(KRMSPropertyConstants.Agenda.TYPE, "error.agenda.invalidType");
194                 return false;
195             }
196         }
197 
198         return isValid;
199     }
200 
201     private boolean validAgendaAttributes(AgendaEditor oldAgendaEditor, AgendaEditor newAgendaEditor) {
202         boolean isValid = true;
203 
204         String typeId = newAgendaEditor.getAgenda().getTypeId();
205 
206         if (!StringUtils.isEmpty(typeId)) {
207             KrmsTypeDefinition typeDefinition = getKrmsTypeRepositoryService().getTypeById(typeId);
208 
209             if (typeDefinition == null) {
210                 throw new IllegalStateException("agenda typeId must match the id of a valid krms type");
211             } else if (StringUtils.isBlank(typeDefinition.getServiceName())) {
212                 throw new IllegalStateException("agenda type definition must have a non-blank service name");
213             } else {
214                 AgendaTypeService agendaTypeService =
215                         (AgendaTypeService)KrmsRepositoryServiceLocator.getService(typeDefinition.getServiceName());
216 
217                 if (agendaTypeService == null) {
218                     throw new IllegalStateException("typeDefinition must have a valid serviceName");
219                 } else {
220 
221                     List<RemotableAttributeError> errors;
222                     if (oldAgendaEditor == null) {
223                         errors = agendaTypeService.validateAttributes(typeId, newAgendaEditor.getCustomAttributesMap());
224                     } else {
225                         errors = agendaTypeService.validateAttributesAgainstExisting(typeId, newAgendaEditor.getCustomAttributesMap(), oldAgendaEditor.getCustomAttributesMap());
226                     }
227 
228                     if (!CollectionUtils.isEmpty(errors)) {
229                         isValid = false;
230                         for (RemotableAttributeError error : errors) {
231                             for (String errorStr : error.getErrors()) {
232                                 this.putFieldError(
233                                         KRMSPropertyConstants.AgendaEditor.CUSTOM_ATTRIBUTES_MAP +
234                                                 "['" + error.getAttributeName() + "']",
235                                         errorStr
236                                 );
237                             }
238                         }
239                     }
240                 }
241             }
242         }
243         return isValid;
244     }
245 
246     /**
247      * Check if an agenda with that name exists already in the context.
248      * @param agendaEditor
249      * @return true if agenda name is unique, false otherwise
250      */
251     public boolean validAgendaName(AgendaEditor agendaEditor) {
252         try {
253             AgendaDefinition agendaFromDataBase = getAgendaBoService().getAgendaByNameAndContextId(
254                     agendaEditor.getAgenda().getName(), agendaEditor.getAgenda().getContextId());
255             if ((agendaFromDataBase != null) && !StringUtils.equals(agendaFromDataBase.getId(), agendaEditor.getAgenda().getId())) {
256                 this.putFieldError(KRMSPropertyConstants.Agenda.NAME, "error.agenda.duplicateName");
257                 return false;
258             }
259         }
260         catch (IllegalArgumentException e) {
261             this.putFieldError(KRMSPropertyConstants.Agenda.NAME, "error.agenda.invalidName");
262             return false;
263         }
264         return true;
265     }
266 
267     /**
268      * Check if a agenda item is valid.
269      *
270      * @param document, the Agenda document of the added/edited agenda item
271      * @return true if agenda item is valid, false otherwise
272      */
273     public boolean processAgendaItemBusinessRules(MaintenanceDocument document) {
274         boolean isValid = true;
275 
276         AgendaEditor newAgendaEditor = (AgendaEditor) document.getNewMaintainableObject().getDataObject();
277         AgendaEditor oldAgendaEditor = (AgendaEditor) document.getOldMaintainableObject().getDataObject();
278         RuleBo rule = newAgendaEditor.getAgendaItemLine().getRule();
279         isValid &= validateRuleName(rule, newAgendaEditor.getAgenda());
280         isValid &= validRuleType(rule.getTypeId(), newAgendaEditor.getAgenda().getContextId());
281         isValid &= validateRuleAction(oldAgendaEditor, newAgendaEditor);
282 
283         return isValid;
284     }
285 
286     /**
287      * Check if a rule with that name exists already in the namespace.
288      * @param rule
289      * @parm agenda
290      * @return true if rule name is unique, false otherwise
291      */
292     private boolean validateRuleName(RuleBo rule, AgendaBo agenda) {
293         if (StringUtils.isBlank(rule.getName())) {
294             this.putFieldError(KRMSPropertyConstants.Rule.NAME, "error.rule.invalidName");
295             return false;
296         }
297         // check current bo for rules (including ones that aren't persisted to the database)
298         for (AgendaItemBo agendaItem : agenda.getItems()) {
299             if (!StringUtils.equals(agendaItem.getRule().getId(), rule.getId()) && StringUtils.equals(agendaItem.getRule().getName(), rule.getName())
300                     && StringUtils.equals(agendaItem.getRule().getNamespace(), rule.getNamespace())) {
301                 this.putFieldError(KRMSPropertyConstants.Rule.NAME, "error.rule.duplicateName");
302                 return false;
303             }
304         }
305 
306         // check database for rules used with other agendas - the namespace might not yet be specified on new agendas.
307         if (StringUtils.isNotBlank(rule.getNamespace())) {
308             RuleDefinition ruleFromDatabase = getRuleBoService().getRuleByNameAndNamespace(rule.getName(), rule.getNamespace());
309             try {
310                 if ((ruleFromDatabase != null) && !StringUtils.equals(ruleFromDatabase.getId(), rule.getId())) {
311                     this.putFieldError(KRMSPropertyConstants.Rule.NAME, "error.rule.duplicateName");
312                     return false;
313                 }
314             }
315             catch (IllegalArgumentException e) {
316                 this.putFieldError(KRMSPropertyConstants.Rule.NAME, "error.rule.invalidName");
317                 return false;
318             }
319         }
320         return true;
321     }
322 
323     /**
324      * Check that the rule type is valid when specified.
325      * @param ruleTypeId, the type id
326      * @param contextId, the contextId the action needs to belong to.
327      * @return true if valid, false otherwise.
328      */
329     private boolean validRuleType(String ruleTypeId, String contextId) {
330         if (StringUtils.isBlank(ruleTypeId)) {
331             return true;
332         }
333 
334         if (getKrmsTypeRepositoryService().getRuleTypeByRuleTypeIdAndContextId(ruleTypeId, contextId) != null) {
335             return true;
336         } else {
337             this.putFieldError(KRMSPropertyConstants.Rule.TYPE, "error.rule.invalidType");
338             return false;
339         }
340     }
341 
342     private boolean validateRuleAction(AgendaEditor oldAgendaEditor, AgendaEditor newAgendaEditor) {
343         boolean isValid = true;
344         ActionBo newActionBo = newAgendaEditor.getAgendaItemLineRuleAction();
345 
346         isValid &= validRuleActionType(newActionBo.getTypeId(), newAgendaEditor.getAgenda().getContextId());
347         if (isValid && StringUtils.isNotBlank(newActionBo.getTypeId())) {
348             isValid &= validRuleActionName(newActionBo.getName());
349             isValid &= validRuleActionAttributes(oldAgendaEditor, newAgendaEditor);
350         }
351         return isValid;
352     }
353 
354     /**
355      * Check that the rule action type is valid when specified.
356      * @param typeId, the action type id
357      * @parm contextId, the contextId the action needs to belong to.
358      * @return true if valid, false otherwise.
359      */
360     private boolean validRuleActionType(String typeId, String contextId) {
361         if (StringUtils.isBlank(typeId)) {
362             return true;
363         }
364 
365         if (getKrmsTypeRepositoryService().getActionTypeByActionTypeIdAndContextId(typeId, contextId) != null) {
366             return true;
367         } else {
368             this.putFieldError(KRMSPropertyConstants.Action.TYPE, "error.action.invalidType");
369             return false;
370         }
371     }
372 
373     /**
374      * Check that a action name is specified.
375      */
376     private boolean validRuleActionName(String name) {
377         if (StringUtils.isNotBlank(name)) {
378             return true;
379         } else {
380             this.putFieldError(KRMSPropertyConstants.Action.NAME, "error.action.missingName");
381             return false;
382         }
383     }
384 
385     private boolean validRuleActionAttributes(AgendaEditor oldAgendaEditor, AgendaEditor newAgendaEditor) {
386         boolean isValid = true;
387 
388         String typeId = newAgendaEditor.getAgendaItemLineRuleAction().getTypeId();
389 
390         if (!StringUtils.isBlank(typeId)) {
391             KrmsTypeDefinition typeDefinition = getKrmsTypeRepositoryService().getTypeById(typeId);
392 
393             if (typeDefinition == null) {
394                 throw new IllegalStateException("rule action typeId must match the id of a valid krms type");
395             } else if (StringUtils.isBlank(typeDefinition.getServiceName())) {
396                 throw new IllegalStateException("rule action type definition must have a non-blank service name");
397             } else {
398                 ActionTypeService actionTypeService = getActionTypeService(typeDefinition.getServiceName());
399 
400                 if (actionTypeService == null) {
401                     throw new IllegalStateException("typeDefinition must have a valid serviceName");
402                 } else {
403 
404                     List<RemotableAttributeError> errors;
405                     if (oldAgendaEditor == null) {
406                         errors = actionTypeService.validateAttributes(typeId,
407                                 newAgendaEditor.getCustomRuleActionAttributesMap());
408                     } else {
409                         errors = actionTypeService.validateAttributesAgainstExisting(typeId,
410                                 newAgendaEditor.getCustomRuleActionAttributesMap(), oldAgendaEditor.getCustomRuleActionAttributesMap());
411                     }
412 
413                     if (!CollectionUtils.isEmpty(errors)) {
414                         isValid = false;
415                         for (RemotableAttributeError error : errors) {
416                             for (String errorStr : error.getErrors()) {
417                                 this.putFieldError(
418                                         KRMSPropertyConstants.AgendaEditor.CUSTOM_RULE_ACTION_ATTRIBUTES_MAP +
419                                                 "['" + error.getAttributeName() + "']",
420                                         errorStr
421                                 );
422                             }
423                         }
424                     }
425                 }
426             }
427         }
428         return isValid;
429     }
430 
431     public ContextBoService getContextBoService() {
432         return KrmsRepositoryServiceLocator.getContextBoService();
433     }
434 
435     public AgendaBoService getAgendaBoService() {
436         return KrmsRepositoryServiceLocator.getAgendaBoService();
437     }
438 
439     public RuleBoService getRuleBoService() {
440         return KrmsRepositoryServiceLocator.getRuleBoService();
441     }
442 
443     public KrmsTypeRepositoryService getKrmsTypeRepositoryService() {
444         return KrmsRepositoryServiceLocator.getKrmsTypeRepositoryService();
445     }
446 
447     public ActionTypeService getActionTypeService(String serviceName) {
448         return (ActionTypeService)GlobalResourceLoader.getService(QName.valueOf(serviceName));
449     }
450     public AgendaAuthorizationService getAgendaAuthorizationService() {
451         return KrmsRepositoryServiceLocator.getAgendaAuthorizationService();
452     }
453 
454 }
455