/*
    * 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.engine.node;
  
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  
  import javax.persistence.CascadeType;
  import javax.persistence.Column;
  import javax.persistence.Entity;
  import javax.persistence.FetchType;
  import javax.persistence.Id;
  import javax.persistence.JoinColumn;
  import javax.persistence.OneToMany;
  import javax.persistence.OneToOne;
  import javax.persistence.PrePersist;
  import javax.persistence.Table;
  import javax.persistence.Version;
  
  import org.hibernate.annotations.Cascade;
  import org.hibernate.annotations.Fetch;
  import org.hibernate.annotations.FetchMode;
  import org.kuali.rice.core.jpa.annotations.Sequence;
  import org.kuali.rice.core.util.OrmUtils;
  import org.kuali.rice.kew.service.KEWServiceLocator;
  
  /**
   * Represents a branch in the routing path of the document.
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  @Entity
  @Sequence(name="KREW_RTE_NODE_S",property="branchId")
  @Table(name="KREW_RTE_BRCH_T")
  public class Branch implements Serializable {
  
  	private static final long serialVersionUID = 7164561979112939112L;
  	
  	@Id
  	@Column(name="RTE_BRCH_ID")
  	private Long branchId;
  	@OneToOne(fetch=FetchType.EAGER)
  	@JoinColumn(name="PARNT_ID")
  	private Branch parentBranch;
  	@Column(name="NM")
  	private String name;
      @OneToMany(fetch=FetchType.EAGER,cascade={CascadeType.REMOVE,CascadeType.PERSIST,CascadeType.MERGE}, mappedBy="branch")
      @Cascade({org.hibernate.annotations.CascadeType.DELETE_ORPHAN})    
      @Fetch(value=FetchMode.SUBSELECT)
  	private List<BranchState> branchState = new ArrayList<BranchState>();
  //	  apache lazy list commented out due to not being serializable
  //    private List branchState = ListUtils.lazyList(new ArrayList(),
  //            new Factory() {
  //				public Object create() {
  //					return new BranchState();
  //				}
  //			});
      @OneToOne(cascade={CascadeType.PERSIST})
  	@JoinColumn(name="INIT_RTE_NODE_INSTN_ID")
  	private RouteNodeInstance initialNode;
      @OneToOne
  	@JoinColumn(name="SPLT_RTE_NODE_INSTN_ID")
  	private RouteNodeInstance splitNode;
  	@OneToOne(cascade={CascadeType.PERSIST,CascadeType.MERGE})
  	@JoinColumn(name="JOIN_RTE_NODE_INSTN_ID")
  	private RouteNodeInstance joinNode;
  		
  	@Version
  	@Column(name="VER_NBR")
  	private Integer lockVerNbr;
  	
  	public String getName() {
  		return name;
  	}
  	
  	public void setName(String name) {
  		this.name = name;	
  	}
  	
      public RouteNodeInstance getSplitNode() {
          return splitNode;
      }
      public void setSplitNode(RouteNodeInstance splitNode) {
         this.splitNode = splitNode;
     }
     public RouteNodeInstance getInitialNode() {
 		return initialNode;
 	}
 	public void setInitialNode(RouteNodeInstance activeNode) {
 		this.initialNode = activeNode;
 	}
 	public Long getBranchId() {
 		return branchId;
 	}
 	public void setBranchId(Long branchId) {
 		this.branchId = branchId;
 	}
 	public RouteNodeInstance getJoinNode() {
 		return joinNode;
 	}
 	public void setJoinNode(RouteNodeInstance joinNode) {
 		this.joinNode = joinNode;
 	}
 	public Branch getParentBranch() {
 		return parentBranch;
 	}
 	public void setParentBranch(Branch parentBranch) {
 		this.parentBranch = parentBranch;
 	}
     public BranchState getBranchState(String key) {
         for (Iterator iter = branchState.iterator(); iter.hasNext();) {
             BranchState branchState = (BranchState) iter.next();
             if (branchState.getKey().equals(key)) {
                 return branchState;
             }
         }
         return null;
     }
     public void addBranchState(BranchState state) {
         branchState.add(state);
         state.setBranch(this);
     }
     public List<BranchState> getBranchState() {
         return branchState;
     }
     public void setBranchState(List<BranchState> branchState) {
         this.branchState.clear();
         this.branchState.addAll(branchState);
     	//this.branchState = branchState;
     }
     
     public BranchState getDocBranchState(int index){
     	while (branchState.size() <= index) {
             branchState.add(new BranchState());
         }
         return (BranchState) branchState.get(index);
    
     }
     
 	public Integer getLockVerNbr() {
         return lockVerNbr;
     }
     public void setLockVerNbr(Integer lockVerNbr) {
         this.lockVerNbr = lockVerNbr;
     }
 
     public String toString() {
         return "[Branch: branchId=" + branchId +
                       ", parentBranch=" + (parentBranch == null ? "null" : parentBranch.getBranchId()) +
                       "]";
     }
     
     @PrePersist
     public void beforeInsert(){
     	OrmUtils.populateAutoIncValue(this, KEWServiceLocator.getEntityManagerFactory().createEntityManager());
     }    
 }