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  1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (http://nette.org)
  5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  6:  */
  7: 
  8: namespace Nette\Database\Drivers;
  9: 
 10: use Nette;
 11: 
 12: 
 13: /**
 14:  * Supplemental SQL Server 2005 and later database driver.
 15:  *
 16:  * @author     David Grudl
 17:  * @author     Miloslav Hůla
 18:  */
 19: class SqlsrvDriver extends Nette\Object implements Nette\Database\ISupplementalDriver
 20: {
 21:     /** @var Nette\Database\Connection */
 22:     private $connection;
 23: 
 24: 
 25:     public function __construct(Nette\Database\Connection $connection, array $options)
 26:     {
 27:         $this->connection = $connection;
 28:     }
 29: 
 30: 
 31:     public function convertException(\PDOException $e)
 32:     {
 33:         return Nette\Database\DriverException::from($e);
 34:     }
 35: 
 36: 
 37:     /********************* SQL ****************d*g**/
 38: 
 39: 
 40:     /**
 41:      * Delimites identifier for use in a SQL statement.
 42:      */
 43:     public function delimite($name)
 44:     {
 45:         /** @see http://msdn.microsoft.com/en-us/library/ms176027.aspx */
 46:         return '[' . str_replace(']', ']]', $name) . ']';
 47:     }
 48: 
 49: 
 50:     /**
 51:      * Formats boolean for use in a SQL statement.
 52:      */
 53:     public function formatBool($value)
 54:     {
 55:         return $value ? '1' : '0';
 56:     }
 57: 
 58: 
 59:     /**
 60:      * Formats date-time for use in a SQL statement.
 61:      */
 62:     public function formatDateTime(/*\DateTimeInterface*/ $value)
 63:     {
 64:         /** @see http://msdn.microsoft.com/en-us/library/ms187819.aspx */
 65:         return $value->format("'Y-m-d H:i:s'");
 66:     }
 67: 
 68: 
 69:     /**
 70:      * Formats date-time interval for use in a SQL statement.
 71:      */
 72:     public function formatDateInterval(\DateInterval $value)
 73:     {
 74:         throw new Nette\NotSupportedException;
 75:     }
 76: 
 77: 
 78:     /**
 79:      * Encodes string for use in a LIKE statement.
 80:      */
 81:     public function formatLike($value, $pos)
 82:     {
 83:         /** @see http://msdn.microsoft.com/en-us/library/ms179859.aspx */
 84:         $value = strtr($value, array("'" => "''", '%' => '[%]', '_' => '[_]', '[' => '[[]'));
 85:         return ($pos <= 0 ? "'%" : "'") . $value . ($pos >= 0 ? "%'" : "'");
 86:     }
 87: 
 88: 
 89:     /**
 90:      * Injects LIMIT/OFFSET to the SQL query.
 91:      */
 92:     public function applyLimit(& $sql, $limit, $offset)
 93:     {
 94:         if ($limit >= 0) {
 95:             $sql = preg_replace('#^\s*(SELECT|UPDATE|DELETE)#i', '$0 TOP ' . (int) $limit, $sql, 1, $count);
 96:             if (!$count) {
 97:                 throw new Nette\InvalidArgumentException('SQL query must begin with SELECT, UPDATE or DELETE command.');
 98:             }
 99:         }
100: 
101:         if ($offset > 0) {
102:             throw new Nette\NotSupportedException('Offset is not supported by this database.');
103:         }
104:     }
105: 
106: 
107:     /**
108:      * Normalizes result row.
109:      */
110:     public function normalizeRow($row)
111:     {
112:         return $row;
113:     }
114: 
115: 
116:     /********************* reflection ****************d*g**/
117: 
118: 
119:     /**
120:      * Returns list of tables.
121:      */
122:     public function getTables()
123:     {
124:         $tables = array();
125:         foreach ($this->connection->query("
126:             SELECT
127:                 name,
128:                 CASE type
129:                     WHEN 'U' THEN 0
130:                     WHEN 'V' THEN 1
131:                 END AS [view]
132:             FROM
133:                 sys.objects
134:             WHERE
135:                 type IN ('U', 'V')
136:         ") as $row) {
137:             $tables[] = array(
138:                 'name' => $row->name,
139:                 'view' => (bool) $row->view,
140:             );
141:         }
142: 
143:         return $tables;
144:     }
145: 
146: 
147:     /**
148:      * Returns metadata for all columns in a table.
149:      */
150:     public function getColumns($table)
151:     {
152:         $columns = array();
153:         foreach ($this->connection->query("
154:             SELECT
155:                 c.name AS name,
156:                 o.name AS [table],
157:                 UPPER(t.name) AS nativetype,
158:                 NULL AS size,
159:                 0 AS unsigned,
160:                 c.is_nullable AS nullable,
161:                 OBJECT_DEFINITION(c.default_object_id) AS [default],
162:                 c.is_identity AS autoincrement,
163:                 CASE WHEN i.index_id IS NULL
164:                     THEN 0
165:                     ELSE 1
166:                 END AS [primary]
167:             FROM
168:                 sys.columns c
169:                 JOIN sys.objects o ON c.object_id = o.object_id
170:                 LEFT JOIN sys.types t ON c.user_type_id = t.user_type_id
171:                 LEFT JOIN sys.key_constraints k ON o.object_id = k.parent_object_id AND k.type = 'PK'
172:                 LEFT JOIN sys.index_columns i ON k.parent_object_id = i.object_id AND i.index_id = k.unique_index_id AND i.column_id = c.column_id
173:             WHERE
174:                 o.type IN ('U', 'V')
175:                 AND o.name = {$this->connection->quote($table)}
176:         ") as $row) {
177:             $row = (array) $row;
178:             $row['vendor'] = $row;
179:             $row['unsigned'] = (bool) $row['unsigned'];
180:             $row['nullable'] = (bool) $row['nullable'];
181:             $row['autoincrement'] = (bool) $row['autoincrement'];
182:             $row['primary'] = (bool) $row['primary'];
183: 
184:             $columns[] = $row;
185:         }
186: 
187:         return $columns;
188:     }
189: 
190: 
191:     /**
192:      * Returns metadata for all indexes in a table.
193:      */
194:     public function getIndexes($table)
195:     {
196:         $indexes = array();
197:         foreach ($this->connection->query("
198:             SELECT
199:                 i.name AS name,
200:                 CASE WHEN i.is_unique = 1 OR i.is_unique_constraint = 1
201:                     THEN 1
202:                     ELSE 0
203:                 END AS [unique],
204:                 i.is_primary_key AS [primary],
205:                 c.name AS [column]
206:             FROM
207:                 sys.indexes i
208:                 JOIN sys.index_columns ic ON i.object_id = ic.object_id AND i.index_id = ic.index_id
209:                 JOIN sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id
210:                 JOIN sys.tables t ON i.object_id = t.object_id
211:             WHERE
212:                 t.name = {$this->connection->quote($table)}
213:             ORDER BY
214:                 i.index_id,
215:                 ic.index_column_id
216:         ") as $row) {
217:             $indexes[$row->name]['name'] = $row->name;
218:             $indexes[$row->name]['unique'] = (bool) $row->unique;
219:             $indexes[$row->name]['primary'] = (bool) $row->primary;
220:             $indexes[$row->name]['columns'][] = $row->column;
221:         }
222: 
223:         return array_values($indexes);
224:     }
225: 
226: 
227:     /**
228:      * Returns metadata for all foreign keys in a table.
229:      */
230:     public function getForeignKeys($table)
231:     {
232:         // Does't work with multicolumn foreign keys
233:         $keys = array();
234:         foreach ($this->connection->query("
235:             SELECT
236:                 fk.name AS name,
237:                 cl.name AS local,
238:                 tf.name AS [table],
239:                 cf.name AS [column]
240:             FROM
241:                 sys.foreign_keys fk
242:                 JOIN sys.foreign_key_columns fkc ON fk.object_id = fkc.constraint_object_id
243:                 JOIN sys.tables tl ON fkc.parent_object_id = tl.object_id
244:                 JOIN sys.columns cl ON fkc.parent_object_id = cl.object_id AND fkc.parent_column_id = cl.column_id
245:                 JOIN sys.tables tf ON fkc.referenced_object_id = tf.object_id
246:                 JOIN sys.columns cf ON fkc.referenced_object_id = cf.object_id AND fkc.referenced_column_id = cf.column_id
247:             WHERE
248:                 tl.name = {$this->connection->quote($table)}
249:         ") as $row) {
250:             $keys[$row->name] = (array) $row;
251:         }
252: 
253:         return array_values($keys);
254:     }
255: 
256: 
257:     /**
258:      * Returns associative array of detected types (IReflection::FIELD_*) in result set.
259:      */
260:     public function getColumnTypes(\PDOStatement $statement)
261:     {
262:         $types = array();
263:         $count = $statement->columnCount();
264:         for ($col = 0; $col < $count; $col++) {
265:             $meta = $statement->getColumnMeta($col);
266:             if (isset($meta['sqlsrv:decl_type']) && $meta['sqlsrv:decl_type'] !== 'timestamp') { // timestamp does not mean time in sqlsrv
267:                 $types[$meta['name']] = Nette\Database\Helpers::detectType($meta['sqlsrv:decl_type']);
268:             } elseif (isset($meta['native_type'])) {
269:                 $types[$meta['name']] = Nette\Database\Helpers::detectType($meta['native_type']);
270:             }
271:         }
272:         return $types;
273:     }
274: 
275: 
276:     /**
277:      * @param  string
278:      * @return bool
279:      */
280:     public function isSupported($item)
281:     {
282:         return $item === self::SUPPORT_SUBSELECT;
283:     }
284: 
285: }
286: 
Nette 2.3.1 API API documentation generated by ApiGen 2.8.0