Namespaces

  • Nette
    • Application
      • Diagnostics
      • Responses
      • Routers
      • UI
    • Caching
      • Storages
    • ComponentModel
    • Config
      • Adapters
      • Extensions
    • Database
      • Diagnostics
      • Drivers
      • Reflection
      • Table
    • DI
      • Diagnostics
    • Diagnostics
    • Forms
      • Controls
      • Rendering
    • Http
    • Iterators
    • Latte
      • Macros
    • Loaders
    • Localization
    • Mail
    • Reflection
    • Security
      • Diagnostics
    • Templating
    • Utils
      • PhpGenerator
  • NetteModule
  • None
  • PHP

Classes

  • ConventionalReflection
  • DiscoveredReflection
  • Overview
  • Namespace
  • Class
  • Tree
  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  *
  6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  7:  *
  8:  * For the full copyright and license information, please view
  9:  * the file license.txt that was distributed with this source code.
 10:  */
 11: 
 12: namespace Nette\Database\Reflection;
 13: 
 14: use Nette;
 15: 
 16: 
 17: 
 18: /**
 19:  * Reflection metadata class with discovery for a database.
 20:  *
 21:  * @author     Jan Skrasek
 22:  * @property-write Nette\Database\Connection $connection
 23:  */
 24: class DiscoveredReflection extends Nette\Object implements Nette\Database\IReflection
 25: {
 26:     /** @var Nette\Caching\Cache */
 27:     protected $cache;
 28: 
 29:     /** @var Nette\Caching\IStorage */
 30:     protected $cacheStorage;
 31: 
 32:     /** @var Nette\Database\Connection */
 33:     protected $connection;
 34: 
 35:     /** @var array */
 36:     protected $structure = array();
 37: 
 38: 
 39: 
 40:     /**
 41:      * Create autodiscovery structure.
 42:      */
 43:     public function __construct(Nette\Caching\IStorage $storage = NULL)
 44:     {
 45:         $this->cacheStorage = $storage;
 46:     }
 47: 
 48: 
 49: 
 50:     public function setConnection(Nette\Database\Connection $connection)
 51:     {
 52:         $this->connection = $connection;
 53:         if ($this->cacheStorage) {
 54:             $this->cache = new Nette\Caching\Cache($this->cacheStorage, 'Nette.Database.' . md5($connection->getDsn()));
 55:             $this->structure = $this->cache->load('structure') ?: $this->structure;
 56:         }
 57:     }
 58: 
 59: 
 60: 
 61:     public function __destruct()
 62:     {
 63:         if ($this->cache) {
 64:             $this->cache->save('structure', $this->structure);
 65:         }
 66:     }
 67: 
 68: 
 69: 
 70:     public function getPrimary($table)
 71:     {
 72:         $primary = & $this->structure['primary'][strtolower($table)];
 73:         if (isset($primary)) {
 74:             return empty($primary) ? NULL : $primary;
 75:         }
 76: 
 77:         $columns = $this->connection->getSupplementalDriver()->getColumns($table);
 78:         $primaryCount = 0;
 79:         foreach ($columns as $column) {
 80:             if ($column['primary']) {
 81:                 $primary = $column['name'];
 82:                 $primaryCount++;
 83:             }
 84:         }
 85: 
 86:         if ($primaryCount !== 1) {
 87:             $primary = '';
 88:             return NULL;
 89:         }
 90: 
 91:         return $primary;
 92:     }
 93: 
 94: 
 95: 
 96:     public function getHasManyReference($table, $key, $refresh = TRUE)
 97:     {
 98:         $reference = & $this->structure['hasMany'][strtolower($table)];
 99:         if (!empty($reference)) {
100:             $candidates = $columnCandidates = array();
101:             foreach ($reference as $targetPair) {
102:                 list($targetColumn, $targetTable) = $targetPair;
103:                 if (stripos($targetTable, $key) === FALSE)
104:                     continue;
105: 
106:                 $candidates[] = array($targetTable, $targetColumn);
107:                 if (stripos($targetColumn, $table) !== FALSE) {
108:                     $columnCandidates[] = $candidate = array($targetTable, $targetColumn);
109:                     if (strtolower($targetTable) === strtolower($key))
110:                         return $candidate;
111:                 }
112:             }
113: 
114:             if (count($columnCandidates) === 1) {
115:                 return reset($columnCandidates);
116:             } elseif (count($candidates) === 1) {
117:                 return reset($candidates);
118:             }
119: 
120:             foreach ($candidates as $candidate) {
121:                 list($targetTable, $targetColumn) = $candidate;
122:                 if (strtolower($targetTable) === strtolower($key))
123:                     return $candidate;
124:             }
125: 
126:             if (!$refresh && !empty($candidates)) {
127:                 throw new \PDOException('Ambiguous joining column in related call.');
128:             }
129:         }
130: 
131:         if (!$refresh) {
132:             throw new \PDOException("No reference found for \${$table}->related({$key}).");
133:         }
134: 
135:         $this->reloadAllForeignKeys();
136:         return $this->getHasManyReference($table, $key, FALSE);
137:     }
138: 
139: 
140: 
141:     public function getBelongsToReference($table, $key, $refresh = TRUE)
142:     {
143:         $reference = & $this->structure['belongsTo'][strtolower($table)];
144:         if (!empty($reference)) {
145:             foreach ($reference as $column => $targetTable) {
146:                 if (stripos($column, $key) !== FALSE) {
147:                     return array(
148:                         $targetTable,
149:                         $column,
150:                     );
151:                 }
152:             }
153:         }
154: 
155:         if (!$refresh) {
156:             throw new \PDOException("No reference found for \${$table}->{$key}.");
157:         }
158: 
159:         $this->reloadForeignKeys($table);
160:         return $this->getBelongsToReference($table, $key, FALSE);
161:     }
162: 
163: 
164: 
165:     protected function reloadAllForeignKeys()
166:     {
167:         foreach ($this->connection->getSupplementalDriver()->getTables() as $table) {
168:             if ($table['view'] == FALSE) {
169:                 $this->reloadForeignKeys($table['name']);
170:             }
171:         }
172: 
173:         foreach (array_keys($this->structure['hasMany']) as $table) {
174:             uksort($this->structure['hasMany'][$table], function($a, $b) {
175:                 return strlen($a) - strlen($b);
176:             });
177:         }
178:     }
179: 
180: 
181: 
182:     protected function reloadForeignKeys($table)
183:     {
184:         foreach ($this->connection->getSupplementalDriver()->getForeignKeys($table) as $row) {
185:             $this->structure['belongsTo'][strtolower($table)][$row['local']] = $row['table'];
186:             $this->structure['hasMany'][strtolower($row['table'])][$row['local'] . $table] = array($row['local'], $table);
187:         }
188: 
189:         if (isset($this->structure['belongsTo'][$table])) {
190:             uksort($this->structure['belongsTo'][$table], function($a, $b) {
191:                 return strlen($a) - strlen($b);
192:             });
193:         }
194:     }
195: 
196: }
197: 
Nette Framework 2.0.6 API API documentation generated by ApiGen 2.7.0