/*

  * Copyright 2005-2007 The Kuali Foundation

  *

  *

  * Licensed under the Educational Community License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  * http://www.opensource.org/licenses/ecl2.php

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.kuali.rice.kew.rule;

 import org.hibernate.annotations.GenericGenerator;

 import org.hibernate.annotations.Parameter;

 import org.kuali.rice.kew.doctype.bo.DocumentType;

 import org.kuali.rice.kew.service.KEWServiceLocator;

 import org.kuali.rice.kew.util.KEWConstants;

 import org.kuali.rice.kns.bo.PersistableBusinessObjectBase;

 import javax.persistence.*;

 /**

  * A model bean representing the delegation of a rule from a responsibility to

  * another rule.  Specifies the delegation type which can be either

  * {@link KEWConstants#DELEGATION_PRIMARY} or {@link KEWConstants#DELEGATION_SECONDARY}.

  *

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 @Entity

 @Table(name="KREW_DLGN_RSP_T")

 //@Sequence(name="KREW_RTE_TMPL_S", property="ruleDelegationId")

 public class RuleDelegation extends PersistableBusinessObjectBase {

         private static final long serialVersionUID = 7989203310473741293L;

         @Id

         @GeneratedValue(generator="KREW_RTE_TMPL_S")

         @GenericGenerator(name="KREW_RTE_TMPL_S",strategy="org.hibernate.id.enhanced.SequenceStyleGenerator",parameters={

                         @Parameter(name="sequence_name",value="KREW_RTE_TMPL_S"),

                         @Parameter(name="value_column",value="id")

         })

         @Column(name="DLGN_RULE_ID")

         private Long ruleDelegationId;

     @Column(name="RSP_ID")

         private Long responsibilityId;

     @Column(name="DLGN_RULE_BASE_VAL_ID", insertable=false, updatable=false)

         private Long delegateRuleId;

     @Column(name="DLGN_TYP")

     private String delegationType = KEWConstants.DELEGATION_PRIMARY;

     @OneToOne(fetch=FetchType.EAGER, cascade={CascadeType.PERSIST})

         @JoinColumn(name="DLGN_RULE_BASE_VAL_ID")

         private RuleBaseValues delegationRuleBaseValues;

 //    @ManyToOne(fetch=FetchType.EAGER, cascade={CascadeType.PERSIST})

 //        @JoinColumn(name="RULE_RSP_ID")

 //        private RuleResponsibility ruleResponsibility;

     public RuleDelegation() {

     }

     public Object copy(boolean preserveKeys) {

         RuleDelegation clone = new RuleDelegation();

         if (ruleDelegationId != null && preserveKeys) {

             clone.setRuleDelegationId(new Long(ruleDelegationId.longValue()));

         }

         clone.setDelegationRuleBaseValues(delegationRuleBaseValues);

         clone.setDelegateRuleId(delegationRuleBaseValues.getRuleBaseValuesId());

         if (delegationType != null) {

             clone.setDelegationType(new String(delegationType));

         }

         return clone;

     }

     public Long getDelegateRuleId() {

         return delegateRuleId;

     }

     public void setDelegateRuleId(Long delegateRuleId) {

         this.delegateRuleId = delegateRuleId;

     }

     public RuleBaseValues getDelegationRuleBaseValues() {

         return delegationRuleBaseValues;

     }

     public void setDelegationRuleBaseValues(RuleBaseValues delegationRuleBaseValues) {

         this.delegationRuleBaseValues = delegationRuleBaseValues;

     }

     public String getDelegationType() {

         return delegationType;

     }

     public void setDelegationType(String delegationType) {

         this.delegationType = delegationType;

     }

     public Long getRuleDelegationId() {

         return ruleDelegationId;

     }

     public void setRuleDelegationId(Long ruleDelegationId) {

         this.ruleDelegationId = ruleDelegationId;

     }

     /**

      * Returns the most recent RuleResponsibility for the responsibility

      * id on this RuleDelegation.

      */

     public RuleResponsibility getRuleResponsibility() {

             if ( getResponsibilityId() == null ) {

                     return null;

             }

             return KEWServiceLocator.getRuleService().findRuleResponsibility(getResponsibilityId());

     }

     public DocumentType getDocumentType() {

         return this.getDelegationRuleBaseValues().getDocumentType();

     }

     public Long getResponsibilityId() {

         return responsibilityId;

     }

     public void setResponsibilityId(Long ruleResponsibilityId) {

         this.responsibilityId = ruleResponsibilityId;

     }

         /**

          * An override of the refresh() method that properly preserves the RuleBaseValues instance. If the delegationRuleBaseValues property

          * becomes null as a result of the refresh() method on the PersistableBusinessObjectBase superclass, an attempt is made to retrieve

          * it by calling refreshReferenceObject() for the property. If that also fails, then the RuleBaseValues instance that was in-place

          * prior to the refresh() superclass call will be used as the delegationRuleBaseValues property's value. This override is necessary

          * in order to prevent certain exceptions during the cancellation of a rule delegation maintenance document.

          * 

          * @see org.kuali.rice.kns.bo.PersistableBusinessObjectBase#refresh()

          * @see org.kuali.rice.kns.bo.PersistableBusinessObjectBase#refreshReferenceObject(java.lang.String)

          */

         @Override

         public void refresh() {

                 RuleBaseValues oldRuleBaseValues = this.getDelegationRuleBaseValues();

                 super.refresh();

                 if (this.getDelegationRuleBaseValues() == null) {

                         this.refreshReferenceObject("delegationRuleBaseValues");

                         if (this.getDelegationRuleBaseValues() == null) {

                                 this.setDelegationRuleBaseValues(oldRuleBaseValues);

                         }

                 }

         }

 }