00001 <?php
00027 require_once 'Zend/Db/Adapter/Pdo/Abstract.php';
00028
00029
00039 class Zend_Db_Adapter_Pdo_Pgsql extends Zend_Db_Adapter_Pdo_Abstract
00040 {
00041
00047 protected $_pdoType = 'pgsql';
00048
00060 protected $_numericDataTypes = array(
00061 Zend_Db::INT_TYPE => Zend_Db::INT_TYPE,
00062 Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
00063 Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE,
00064 'INTEGER' => Zend_Db::INT_TYPE,
00065 'SERIAL' => Zend_Db::INT_TYPE,
00066 'SMALLINT' => Zend_Db::INT_TYPE,
00067 'BIGINT' => Zend_Db::BIGINT_TYPE,
00068 'BIGSERIAL' => Zend_Db::BIGINT_TYPE,
00069 'DECIMAL' => Zend_Db::FLOAT_TYPE,
00070 'DOUBLE PRECISION' => Zend_Db::FLOAT_TYPE,
00071 'NUMERIC' => Zend_Db::FLOAT_TYPE,
00072 'REAL' => Zend_Db::FLOAT_TYPE
00073 );
00074
00081 protected function _connect()
00082 {
00083 if ($this->_connection) {
00084 return;
00085 }
00086
00087 parent::_connect();
00088
00089 if (!empty($this->_config['charset'])) {
00090 $sql = "SET NAMES '" . $this->_config['charset'] . "'";
00091 $this->_connection->exec($sql);
00092 }
00093 }
00094
00100 public function listTables()
00101 {
00102
00103 $sql = "SELECT c.relname AS table_name "
00104 . "FROM pg_class c, pg_user u "
00105 . "WHERE c.relowner = u.usesysid AND c.relkind = 'r' "
00106 . "AND NOT EXISTS (SELECT 1 FROM pg_views WHERE viewname = c.relname) "
00107 . "AND c.relname !~ '^(pg_|sql_)' "
00108 . "UNION "
00109 . "SELECT c.relname AS table_name "
00110 . "FROM pg_class c "
00111 . "WHERE c.relkind = 'r' "
00112 . "AND NOT EXISTS (SELECT 1 FROM pg_views WHERE viewname = c.relname) "
00113 . "AND NOT EXISTS (SELECT 1 FROM pg_user WHERE usesysid = c.relowner) "
00114 . "AND c.relname !~ '^pg_'";
00115
00116 return $this->fetchCol($sql);
00117 }
00118
00149 public function describeTable($tableName, $schemaName = null)
00150 {
00151 $sql = "SELECT
00152 a.attnum,
00153 n.nspname,
00154 c.relname,
00155 a.attname AS colname,
00156 t.typname AS type,
00157 a.atttypmod,
00158 FORMAT_TYPE(a.atttypid, a.atttypmod) AS complete_type,
00159 d.adsrc AS default_value,
00160 a.attnotnull AS notnull,
00161 a.attlen AS length,
00162 co.contype,
00163 ARRAY_TO_STRING(co.conkey, ',') AS conkey
00164 FROM pg_attribute AS a
00165 JOIN pg_class AS c ON a.attrelid = c.oid
00166 JOIN pg_namespace AS n ON c.relnamespace = n.oid
00167 JOIN pg_type AS t ON a.atttypid = t.oid
00168 LEFT OUTER JOIN pg_constraint AS co ON (co.conrelid = c.oid
00169 AND a.attnum = ANY(co.conkey) AND co.contype = 'p')
00170 LEFT OUTER JOIN pg_attrdef AS d ON d.adrelid = c.oid AND d.adnum = a.attnum
00171 WHERE a.attnum > 0 AND c.relname = ".$this->quote($tableName);
00172 if ($schemaName) {
00173 $sql .= " AND n.nspname = ".$this->quote($schemaName);
00174 }
00175 $sql .= ' ORDER BY a.attnum';
00176
00177 $stmt = $this->query($sql);
00178
00179
00180 $result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
00181
00182 $attnum = 0;
00183 $nspname = 1;
00184 $relname = 2;
00185 $colname = 3;
00186 $type = 4;
00187 $atttypemod = 5;
00188 $complete_type = 6;
00189 $default_value = 7;
00190 $notnull = 8;
00191 $length = 9;
00192 $contype = 10;
00193 $conkey = 11;
00194
00195 $desc = array();
00196 foreach ($result as $key => $row) {
00197 $defaultValue = $row[$default_value];
00198 if ($row[$type] == 'varchar') {
00199 if (preg_match('/character varying(?:\((\d+)\))?/', $row[$complete_type], $matches)) {
00200 if (isset($matches[1])) {
00201 $row[$length] = $matches[1];
00202 } else {
00203 $row[$length] = null;
00204 }
00205 }
00206 if (preg_match("/^'(.*?)'::character varying$/", $defaultValue, $matches)) {
00207 $defaultValue = $matches[1];
00208 }
00209 }
00210 list($primary, $primaryPosition, $identity) = array(false, null, false);
00211 if ($row[$contype] == 'p') {
00212 $primary = true;
00213 $primaryPosition = array_search($row[$attnum], explode(',', $row[$conkey])) + 1;
00214 $identity = (bool) (preg_match('/^nextval/', $row[$default_value]));
00215 }
00216 $desc[$this->foldCase($row[$colname])] = array(
00217 'SCHEMA_NAME' => $this->foldCase($row[$nspname]),
00218 'TABLE_NAME' => $this->foldCase($row[$relname]),
00219 'COLUMN_NAME' => $this->foldCase($row[$colname]),
00220 'COLUMN_POSITION' => $row[$attnum],
00221 'DATA_TYPE' => $row[$type],
00222 'DEFAULT' => $defaultValue,
00223 'NULLABLE' => (bool) ($row[$notnull] != 't'),
00224 'LENGTH' => $row[$length],
00225 'SCALE' => null,
00226 'PRECISION' => null,
00227 'UNSIGNED' => null,
00228 'PRIMARY' => $primary,
00229 'PRIMARY_POSITION' => $primaryPosition,
00230 'IDENTITY' => $identity
00231 );
00232 }
00233 return $desc;
00234 }
00235
00236
00245 public function limit($sql, $count, $offset = 0)
00246 {
00247 $count = intval($count);
00248 if ($count <= 0) {
00252 require_once 'Zend/Db/Adapter/Exception.php';
00253 throw new Zend_Db_Adapter_Exception("LIMIT argument count=$count is not valid");
00254 }
00255
00256 $offset = intval($offset);
00257 if ($offset < 0) {
00261 require_once 'Zend/Db/Adapter/Exception.php';
00262 throw new Zend_Db_Adapter_Exception("LIMIT argument offset=$offset is not valid");
00263 }
00264
00265 $sql .= " LIMIT $count";
00266 if ($offset > 0) {
00267 $sql .= " OFFSET $offset";
00268 }
00269
00270 return $sql;
00271 }
00272
00281 public function lastSequenceId($sequenceName)
00282 {
00283 $this->_connect();
00284 $value = $this->fetchOne("SELECT CURRVAL(".$this->quote($sequenceName).")");
00285 return $value;
00286 }
00287
00296 public function nextSequenceId($sequenceName)
00297 {
00298 $this->_connect();
00299 $value = $this->fetchOne("SELECT NEXTVAL(".$this->quote($sequenceName).")");
00300 return $value;
00301 }
00302
00317 public function lastInsertId($tableName = null, $primaryKey = null)
00318 {
00319 if ($tableName !== null) {
00320 $sequenceName = $tableName;
00321 if ($primaryKey) {
00322 $sequenceName .= "_$primaryKey";
00323 }
00324 $sequenceName .= '_seq';
00325 return $this->lastSequenceId($sequenceName);
00326 }
00327 return $this->_connection->lastInsertId($tableName);
00328 }
00329
00330 }