/**

  * Copyright 2005-2011 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.apache.commons.lang.ObjectUtils;

 import org.hibernate.annotations.GenericGenerator;

 import org.hibernate.annotations.Parameter;

 import org.kuali.rice.kew.api.rule.*;

 import org.kuali.rice.kew.api.rule.RuleExpression;

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

 import javax.persistence.*;

 /**

  * BO for rule expressions 

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

  */

 @Entity

 @Table(name="KREW_RULE_EXPR_T")

 //@Sequence(name="KREW_RULE_EXPR_S", property="id")

 public class RuleExpressionDef extends PersistableBusinessObjectBase implements RuleExpressionContract {

     /**

      * Primary key

      */

     @Id

     @GeneratedValue(generator="KREW_RULE_EXPR_S")

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

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

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

         })

         @Column(name="RULE_EXPR_ID")

         private String id;

     /**

      * The type of the expression

      */

     @Column(name="TYP")

         private String type;

     /**

      * The content of the expression

      */

     @Column(name="RULE_EXPR", nullable=true)

         private String expression;

     /**

      * @return the id

      */

     public String getId() {

         return this.id;

     }

     /**

      * @param id the id to set

      */

     public void setId(String id) {

         this.id = id;

     }

     /**

      * @return the type

      */

     public String getType() {

         return this.type;

     }

     /**

      * @param type the type to set

      */

     public void setType(String type) {

         this.type = type;

     }

     /**

      * @return the expression

      */

     public String getExpression() {

         return this.expression;

     }

     /**

      * @param expression the expression to set

      */

     public void setExpression(String expression) {

         this.expression = expression;

     }

     /**

      * Returns whether the object is an <i>equivalent</i> rule expression, i.e.

      * the type and expression are the same.  This is necessary for rule duplicate

      * detection.

      * @see java.lang.Object#equals(java.lang.Object)

      */

     @Override

     public boolean equals(Object obj) {

         if (obj == null) return false;

         if (!(obj instanceof RuleExpressionDef)) return false;

         RuleExpressionDef arg = (RuleExpressionDef) obj;

         return ObjectUtils.equals(type, arg.getType()) && ObjectUtils.equals(expression, arg.getExpression());

     }

     /**

      * Converts a mutable bo to its immutable counterpart

      * @param bo the mutable business object

      * @return the immutable object

      */

     public static org.kuali.rice.kew.api.rule.RuleExpression to(RuleExpressionDef bo) {

         if (bo == null) {

             return null;

         }

         return RuleExpression.Builder.create(bo).build();

     }

     /**

      * Converts a immutable object to its mutable counterpart

      * @param im immutable object

      * @return the mutable bo

      */

     public static RuleExpressionDef from(RuleExpression im) {

         if (im == null) {

             return null;

         }

         RuleExpressionDef bo = new RuleExpressionDef();

         bo.setId(im.getId());

         bo.setType(im.getType());

         bo.setExpression(im.getExpression());

         bo.setVersionNumber(im.getVersionNumber());

         bo.setObjectId(im.getObjectId());

         return bo;

     }

 }