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<?php |
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namespace samson\activerecord; |
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/** |
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* Class for defining permanent relations beetween database tables |
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* @author Vitaly Iegorov <[email protected]> |
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* |
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*/ |
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class TableRelation |
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{ |
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/** Relation type: one-to-many */ |
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const T_ONE_TO_MANY = 1; |
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/** Relation type: one-to-one */ |
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const T_ONE_TO_ONE = 0; |
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/** Collection of permanent instances of class */ |
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public static $instances = array(); |
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/** Parent table in relation */ |
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public $parent; |
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/** Child table in relation */ |
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public $child; |
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/** Parent table field name in relation */ |
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public $parent_field; |
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/** Child table field name in relation */ |
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public $child_field; |
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/** Alias for JOIN in relation */ |
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public $alias; |
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/** Relation type */ |
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public $type; |
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/** |
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* Constructor |
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* |
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* @param string $p Parent table name |
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* @param string $c Child table name |
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* @param string $pf Parent field name |
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* @param integer $rt Relation type |
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* @param string $cf Child field name |
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* @param string $a Alias |
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*/ |
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public function __construct( $p, $c, $pf = null, $rt = self::T_ONE_TO_ONE, $cf = null, $a = null ) |
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{ |
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// Set table relation parameters |
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$this->parent = $p; |
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$this->child = $c; |
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$this->alias = $a; |
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$this->type = $rt; |
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$this->parent_field = $pf; |
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$this->child_field = $cf; |
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/* |
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// Get primary field |
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eval('$primary = '.$p.'::$_primary;'); |
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// If no primary field is specified - set parent primary field |
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if( !isset($pf) ) $this->parent_field = $p.'.'.$primary; |
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// If no child field is specified - set parent primary field |
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if( !isset($cf) ) $this->child_field = $c.'.'.$primary; |
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*/ |
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// Save instance to static array |
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self::$instances[] = & $this; |
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} |
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} |
samsonos /
php_activerecord
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