net/systemeD/halcyon/connection/Relation.as

   1 package net.systemeD.halcyon.connection {
   2
   3     public class Relation extends Entity {
   4         private var members:Array;
   5                 public static var entity_type:String = 'relation';
   6
   7         public function Relation(id:Number, version:uint, tags:Object, loaded:Boolean, members:Array) {
   8             super(id, version, tags, loaded);
   9             this.members = members;
  10                         for each (var member:RelationMember in members) { member.entity.addParent(this); }
  11         }
  12
  13         public function update(version:uint, tags:Object, loaded:Boolean, members:Array):void {
  14                         var member:RelationMember;
  15                         for each (member in this.members) { member.entity.removeParent(this); }
  16                         updateEntityProperties(version,tags,loaded); this.members=members;
  17                         for each (member in members) { member.entity.addParent(this); }
  18                 }
  19
  20         public function get length():uint {
  21             return members.length;
  22         }
  23
  24         public function findEntityMemberIndex(entity:Entity):int {
  25             for (var index:uint = 0; index < members.length; index++) {
  26                 var member:RelationMember = members[index];
  27                 if ( member.entity == entity )
  28                     return index;
  29             }
  30             return -1;
  31         }
  32
  33         public function getMember(index:uint):RelationMember {
  34             return members[index];
  35         }
  36
  37         public function setMember(index:uint, member:RelationMember):void {
  38                         member.entity.addParent(this);
  39                         members.splice(index, 1, member);
  40         }
  41
  42         public function insertMember(index:uint, member:RelationMember):void {
  43                         member.entity.addParent(this);
  44             members.splice(index, 0, member);
  45         }
  46
  47         public function appendMember(member:RelationMember):uint {
  48                         member.entity.addParent(this);
  49             members.push(member);
  50             return members.length;
  51         }
  52
  53         public function removeMember(index:uint):void {
  54             var removed:Array=members.splice(index, 1);
  55                         removed[0].entity.removeParent(this);
  56         }
  57
  58         public function getDescription():String {
  59             var desc:String = "";
  60             var relTags:Object = getTagsHash();
  61             if ( relTags["type"] ) {
  62                 desc = relTags["type"];
  63                 if ( relTags[desc] )
  64                     desc += " " + relTags[desc];
  65             }
  66             if ( relTags["ref"] )
  67                 desc += " " + relTags["ref"];
  68             if ( relTags["name"] )
  69                 desc += " " + relTags["name"];
  70             return desc;
  71         }
  72
  73                 public override function getType():String {
  74                         return 'relation';
  75                 }
  76
  77                 public override function toString():String {
  78             return "Relation("+id+"@"+version+"): "+members.length+" members "+getTagList();
  79         }
  80
  81     }
  82
  83 }