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<?php |
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namespace Nkey\Caribu\Type; |
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/** |
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* Concrete postgresql implementation of database type |
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* |
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* This class is part of Caribu package |
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* |
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* @author Maik Greubel <[email protected]> |
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*/ |
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class Postgres extends AbstractType |
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{ |
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/** |
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* (non-PHPdoc) |
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* |
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* @see \Nkey\Caribu\Type\IType::getDsn() |
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*/ |
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public function getDsn(): string |
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{ |
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// From the docs: |
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// return "pgsql:host={host};port={port};dbname={schema};user={user};password={password}"; |
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return "pgsql:host={host};port={port};dbname={schema}"; |
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} |
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/** |
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* (non-PHPdoc) |
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* |
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* @see \Nkey\Caribu\Type\IType::getDefaultPort() |
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*/ |
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public function getDefaultPort(): int |
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{ |
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return 5432; |
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} |
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/** |
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* (non-PHPdoc) |
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* |
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* @see \Nkey\Caribu\Type\IType::getPrimaryKeyColumn() |
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*/ |
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public function getPrimaryKeyColumn(string $table, \Nkey\Caribu\Orm\Orm $orm): string |
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{ |
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$query = "select ccu.column_name as column_name from information_schema.constraint_column_usage ccu " . "inner join information_schema.table_constraints tc on ccu.constraint_name = tc.constraint_name " . "where tc.table_catalog = '{schema}' AND tc.table_name = '{table}'"; |
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return $this->getPrimaryColumnViaSql($orm, $table, $query); |
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} |
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/** |
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* (non-PHPdoc) |
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* |
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* @see \Nkey\Caribu\Type\IType::lock() |
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*/ |
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public function lock(string $table, int $lockType, \Nkey\Caribu\Orm\Orm $orm) |
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{ |
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$mode = "ACCESS SHARE"; |
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if ($lockType == IType::LOCK_TYPE_WRITE) { |
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$mode = "ROW EXCLUSIVE"; |
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} |
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$lockStatement = sprintf("LOCK TABLE %s%s%s IN %s MODE NOWAIT", $this->getEscapeSign(), $table, $this->getEscapeSign(), $mode); |
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$this->changeLockViaSql($orm, $table, $lockStatement); |
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} |
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/** |
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* (non-PHPdoc) |
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* |
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* @see \Nkey\Caribu\Type\IType::unlock() |
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*/ |
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public function unlock(string $table, \Nkey\Caribu\Orm\Orm $orm) |
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{ |
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// No unlock command; locks are released upon transaction end via commit or rollback |
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} |
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/** |
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* (non-PHPdoc) |
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* |
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* @see \Nkey\Caribu\Type\IType::getEscapeSign() |
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*/ |
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public function getEscapeSign(): string |
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{ |
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return '"'; |
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} |
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/** |
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* (non-PHPdoc) |
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* |
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* @see \Nkey\Caribu\Type\AbstractType::getTypeQuery() |
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*/ |
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protected function getTypeQuery(): string |
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{ |
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$query = "select data_type from information_schema.columns where table_catalog = '{schema}' " . "and table_name = '{table}' and column_name = '{column}'"; |
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return $query; |
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} |
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/** |
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* (non-PHPdoc) |
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* |
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* @see \Nkey\Caribu\Type\AbstractType::mapType() |
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*/ |
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protected function mapType(array $result): int |
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{ |
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switch (strtoupper($result['data_type'])) { |
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case 'SMALLINT': |
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case 'INTEGER': |
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case 'BIGINT': |
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return \Nkey\Caribu\Orm\OrmDataType::INTEGER; |
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case 'NUMERIC': |
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case 'MONEY': |
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return \Nkey\Caribu\Orm\OrmDataType::DECIMAL; |
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case 'CHARACTER VARYING': |
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case 'CHARACTER': |
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case 'TEXT': |
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case 'TIME': |
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return \Nkey\Caribu\Orm\OrmDataType::STRING; |
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case 'BYTEA': |
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return \Nkey\Caribu\Orm\OrmDataType::BLOB; |
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case 'TIMESTAMP': |
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case 'DATE': |
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case 'TIMESTAMP WITHOUT TIME ZONE': |
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return \Nkey\Caribu\Orm\OrmDataType::DATETIME; |
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default: |
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return \Nkey\Caribu\Orm\OrmDataType::STRING; |
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} |
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} |
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/** |
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* (non-PHPdoc) |
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* |
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* @see \Nkey\Caribu\Type\IType::getSequenceNameForColumn() |
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*/ |
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public function getSequenceNameForColumn(string $table, string $columnName, \Nkey\Caribu\Orm\Orm $orm): string |
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{ |
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$sequenceName = null; |
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$query = "select column_default from information_schema.columns where table_catalog = '{schema}' " . "AND table_name = '{table}' and column_name = '{column}'"; |
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$sql = $this->interp($query, array( |
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'schema' => $orm->getSchema(), |
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'table' => $table, |
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'column' => $columnName |
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)); |
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$stmt = null; |
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try { |
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$stmt = $orm->getConnection()->query($sql); |
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$stmt->setFetchMode(\PDO::FETCH_ASSOC); |
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$result = $stmt->fetch(); |
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$this->handleNoColumn($table, $columnName, $orm, $stmt, $result); |
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$matches = array(); |
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if (preg_match("/nextval\('([^']+)'.*\)/", $result['column_default'], $matches)) { |
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$sequenceName = $matches[1]; |
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} |
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$stmt->closeCursor(); |
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} catch (\PDOException $exception) { |
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if ($stmt) { |
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$stmt->closeCursor(); |
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} |
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throw \Nkey\Caribu\Orm\OrmException::fromPrevious($exception); |
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} |
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return $sequenceName; |
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} |
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} |
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maikgreubel /
caribu-orm
