Rev 27 | Rev 51 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 27 | PointedEar | 1 | <?php |
| 2 | |||
| 29 | PointedEar | 3 | require_once __DIR__ . '/Table.php'; |
| 27 | PointedEar | 4 | |
| 5 | /** |
||
| 6 | * Generic abstract database mapper class |
||
| 7 | * |
||
| 8 | * @author Thomas Lahn |
||
| 9 | */ |
||
| 10 | abstract class Mapper |
||
| 11 | { |
||
| 12 | /** |
||
| 13 | * Class name of the associated table model |
||
| 14 | * |
||
| 15 | * @var string |
||
| 16 | */ |
||
| 17 | protected $_table = 'Table'; |
||
| 18 | |||
| 19 | protected $_dbTable; |
||
| 20 | |||
| 21 | /** |
||
| 22 | * Sets the {@link Table} for this mapper |
||
| 23 | * @param string|Table $dbTable |
||
| 24 | * Class name of the new instance, or an existing instance |
||
| 25 | * @throws Exception if <var>$dbTable</var> is not a <code>Table</code> |
||
| 26 | */ |
||
| 27 | public function setDbTable($table) |
||
| 28 | { |
||
| 29 | if (is_string($table)) |
||
| 30 | { |
||
| 31 | $table = new $table(); |
||
| 32 | } |
||
| 33 | |||
| 34 | if (!($table instanceof Table)) { |
||
| 35 | throw new Exception('Invalid table data gateway provided'); |
||
| 36 | } |
||
| 37 | |||
| 38 | $this->_dbTable = $table; |
||
| 39 | } |
||
| 40 | |||
| 41 | /** |
||
| 42 | * Gets the {@link Table} for this mapper |
||
| 43 | * |
||
| 44 | * @param string|Table $table |
||
| 45 | * Class name of the new instance or an existing instance. |
||
| 46 | * The default is the value of the <code>$_table</code> property. |
||
| 47 | * @return Table |
||
| 48 | * @throws Exception if <var>$dbTable</var> is not a <code>Table</code> |
||
| 49 | * @see Mapper::setDbTable() |
||
| 50 | */ |
||
| 51 | public function getDbTable($table = null) |
||
| 52 | { |
||
| 53 | if (is_null($this->_dbTable)) |
||
| 54 | { |
||
| 55 | if (is_null($table)) |
||
| 56 | { |
||
| 57 | $table = $this->_table; |
||
| 58 | } |
||
| 59 | |||
| 60 | $this->setDbTable($table); |
||
| 61 | } |
||
| 62 | |||
| 63 | return $this->_dbTable; |
||
| 64 | } |
||
| 65 | |||
| 66 | /** |
||
| 67 | * Sorts an array of objects by the property of the nested object. |
||
| 68 | * To be used with the u*sort() functions. |
||
| 69 | * |
||
| 70 | * @param object $a First operand of the comparison |
||
| 71 | * @param object $b Second operand of the comparison |
||
| 72 | * @param string $property |
||
| 73 | * Name of the property of the nested object by which to sort the outer array |
||
| 74 | * @return int |
||
| 75 | * 0 if <var>$a</var> and <var>$b</var> are "equal", |
||
| 76 | * <code>-1</code> if <var>$a</var> is "less" than <var>$b</var>, |
||
| 77 | * <code>1</code> otherwise. |
||
| 78 | */ |
||
| 79 | protected static function sortByProperty($a, $b, $property) |
||
| 80 | { |
||
| 81 | if ($a->$property === $b->$property) |
||
| 82 | { |
||
| 83 | return 0; |
||
| 84 | } |
||
| 85 | |||
| 86 | return ($a->$property < $b->$property) ? -1 : 1; |
||
| 87 | } |
||
| 88 | } |