| 1 | <?php |
| 2 | /* |
| 3 | * $Id: Hook.php 2963 2007-10-21 06:23:59Z Jonathan.Wage $ |
| 4 | * |
| 5 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 6 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 7 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 8 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 9 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 10 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 11 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 12 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 13 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 14 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 15 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 16 | * |
| 17 | * This software consists of voluntary contributions made by many individuals |
| 18 | * and is licensed under the LGPL. For more information, see |
| 19 | * <http://www.phpdoctrine.com>. |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * Doctrine_Hook |
| 24 | * |
| 25 | * @package Doctrine |
| 26 | * @subpackage Hook |
| 27 | * @license http://www.opensource.org/licenses/lgpl-license.php LGPL |
| 28 | * @link www.phpdoctrine.com |
| 29 | * @since 1.0 |
| 30 | * @version $Revision: 2963 $ |
| 31 | * @author Konsta Vesterinen <kvesteri@cc.hut.fi> |
| 32 | */ |
| 33 | class Doctrine_Hook |
| 34 | { |
| 35 | /** |
| 36 | * @var Doctrine_Query $query the base query |
| 37 | */ |
| 38 | protected $query; |
| 39 | |
| 40 | /** |
| 41 | * @var array $joins the optional joins of the base query |
| 42 | */ |
| 43 | protected $joins; |
| 44 | |
| 45 | /** |
| 46 | * @var array $hooks hooks array |
| 47 | */ |
| 48 | protected $hooks = array( |
| 49 | 'where', |
| 50 | 'orderby', |
| 51 | 'limit', |
| 52 | 'offset' |
| 53 | ); |
| 54 | |
| 55 | /** |
| 56 | * @var array $fieldParsers custom field parsers array |
| 57 | * keys as field names in the format componentAlias.FieldName |
| 58 | * values as parser names / objects |
| 59 | */ |
| 60 | protected $fieldParsers = array(); |
| 61 | |
| 62 | /** |
| 63 | * @var array $typeParsers type parsers array |
| 64 | * keys as type names and values as parser names / objects |
| 65 | */ |
| 66 | protected $typeParsers = array( |
| 67 | 'char' => 'Doctrine_Hook_WordLike', |
| 68 | 'string' => 'Doctrine_Hook_WordLike', |
| 69 | 'varchar' => 'Doctrine_Hook_WordLike', |
| 70 | 'integer' => 'Doctrine_Hook_Integer', |
| 71 | 'enum' => 'Doctrine_Hook_Integer', |
| 72 | 'time' => 'Doctrine_Hook_Time', |
| 73 | 'date' => 'Doctrine_Hook_Date', |
| 74 | ); |
| 75 | |
| 76 | /** |
| 77 | * @param Doctrine_Query $query the base query |
| 78 | */ |
| 79 | public function __construct($query) |
| 80 | { |
| 81 | if (is_string($query)) { |
| 82 | $this->query = new Doctrine_Query(); |
| 83 | $this->query->parseQuery($query); |
| 84 | } elseif ($query instanceof Doctrine_Query) { |
| 85 | $this->query = $query; |
| 86 | } else { |
| 87 | throw new Doctrine_Exception('Constructor argument should be either Doctrine_Query object or valid DQL query'); |
| 88 | } |
| 89 | |
| 90 | $this->query->getQuery(); |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * getQuery |
| 95 | * |
| 96 | * @return Doctrine_Query returns the query object associated with this hook |
| 97 | */ |
| 98 | public function getQuery() |
| 99 | { |
| 100 | return $this->query; |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * setTypeParser |
| 105 | * |
| 106 | * @param string $type type name |
| 107 | * @param string|object $parser parser name or custom parser object |
| 108 | */ |
| 109 | public function setTypeParser($type, $parser) |
| 110 | { |
| 111 | $this->typeParsers[$type] = $parser; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * setFieldParser |
| 116 | * |
| 117 | * @param string $field field name |
| 118 | * @param string|object $parser parser name or custom parser object |
| 119 | */ |
| 120 | public function setFieldParser($field, $parser) |
| 121 | { |
| 122 | $this->fieldParsers[$field] = $parser; |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * hookWhere |
| 127 | * builds DQL query where part from given parameter array |
| 128 | * |
| 129 | * @param array $params an associative array containing field |
| 130 | * names and their values |
| 131 | * @return boolean whether or not the hooking was |
| 132 | */ |
| 133 | public function hookWhere($params) |
| 134 | { |
| 135 | if ( ! is_array($params)) { |
| 136 | return false; |
| 137 | } |
| 138 | foreach ($params as $name => $value) { |
| 139 | if ($value === '' || $value === '-') { |
| 140 | continue; |
| 141 | } |
| 142 | $e = explode('.', $name); |
| 143 | |
| 144 | if (count($e) == 2) { |
| 145 | list($alias, $column) = $e; |
| 146 | |
| 147 | $map = $this->query->getAliasDeclaration($alias); |
| 148 | $table = $map['table']; |
| 149 | |
| 150 | if ( ! $table) { |
| 151 | throw new Doctrine_Exception('Unknown alias ' . $alias); |
| 152 | } |
| 153 | |
| 154 | if ($def = $table->getDefinitionOf($column)) { |
| 155 | |
| 156 | $def[0] = gettype($value); |
| 157 | if (isset($this->typeParsers[$def[0]])) { |
| 158 | $name = $this->typeParsers[$def[0]]; |
| 159 | $parser = new $name; |
| 160 | } |
| 161 | |
| 162 | $parser->parse($alias, $column, $value); |
| 163 | |
| 164 | $this->query->addWhere($parser->getCondition(), $parser->getParams()); |
| 165 | } |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | return true; |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * hookOrderBy |
| 174 | * builds DQL query orderby part from given parameter array |
| 175 | * |
| 176 | * @param array $params an array containing all fields which the built query |
| 177 | * should be ordered by |
| 178 | * @return boolean whether or not the hooking was successful |
| 179 | */ |
| 180 | public function hookOrderby($params) |
| 181 | { |
| 182 | if ( ! is_array($params)) { |
| 183 | return false; |
| 184 | } |
| 185 | foreach ($params as $name) { |
| 186 | $e = explode(' ', $name); |
| 187 | |
| 188 | $order = 'ASC'; |
| 189 | |
| 190 | if (count($e) > 1) { |
| 191 | $order = ($e[1] == 'DESC') ? 'DESC' : 'ASC'; |
| 192 | } |
| 193 | |
| 194 | $e = explode('.', $e[0]); |
| 195 | |
| 196 | if (count($e) == 2) { |
| 197 | list($alias, $column) = $e; |
| 198 | |
| 199 | $map = $this->query->getAliasDeclaration($alias); |
| 200 | $table = $map['table']; |
| 201 | |
| 202 | if ($def = $table->getDefinitionOf($column)) { |
| 203 | $this->query->addOrderBy($alias . '.' . $column . ' ' . $order); |
| 204 | } |
| 205 | } |
| 206 | } |
| 207 | return true; |
| 208 | } |
| 209 | |
| 210 | /** |
| 211 | * @param integer $limit |
| 212 | */ |
| 213 | public function hookLimit($limit) |
| 214 | { |
| 215 | $this->query->limit((int) $limit); |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * @param integer $offset |
| 220 | */ |
| 221 | public function hookOffset($offset) |
| 222 | { |
| 223 | $this->query->offset((int) $offset); |
| 224 | } |
| 225 | } |