gyro/core/model/base/dbfieldrelation.cls.php

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00001 <?php
00002 /**
00003  * A relation between two fields in DB
00004  * 
00005  * @author Gerd Riesselmann
00006  * @ingroup Model
00007  */
00008 class DBFieldRelation implements IDBFieldRelation {
00009         
00010         protected $source_field;
00011         protected $target_field;
00012 
00013         public function __construct($source_field, $target_field) {
00014                 $this->source_field = $source_field;
00015                 $this->target_field = $target_field;
00016         }
00017         
00018         /**
00019          * Return source table name
00020          * 
00021          * @return string
00022          */     
00023         public function get_source_field_name() {
00024                 return $this->source_field;
00025         }
00026 
00027         /**
00028          * Return target table name
00029          * 
00030          * @return string
00031          */     
00032         public function get_target_field_name() {
00033                 return $this->target_field;
00034         }
00035 
00036         /**
00037          * Returns an IDBFieldRelation with source field as target field and vice versa
00038          *
00039          * @return IDBFieldRelation
00040          */
00041         public function reverse() {
00042                 return new DBFieldRelation($this->target_field, $this->source_field);
00043         }       
00044 }