Updated oracle and mysql connection drivers
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zYne
parent
53e9b06f6c
commit
893b9b0b23
@ -165,38 +165,79 @@ abstract class Doctrine_Connection extends Doctrine_Configurable implements Coun
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return $this->dataDict;
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}
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/**
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* returns the next value in the given sequence
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*
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* @param string $sequence
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* @throws PDOException if something went wrong at database level
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* @return integer
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*/
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public function nextId($sequence) {
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throw new Doctrine_Connection_Exception('NextId() for sequences not supported by this driver.');
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}
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/**
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* Set the charset on the current connection
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*
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* @param string charset
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* @param resource connection handle
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*
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* @throws Doctrine_Connection_Exception if the feature is not supported by the driver
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* @return true on success, MDB2 Error Object on failure
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*/
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public function setCharset($charset) {
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throw new Doctrine_Connection_Exception('Altering charset not supported by this driver.');
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}
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/**
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* setTransactionIsolation
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*
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* Set the transacton isolation level.
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* (implemented by the connection drivers)
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*
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* example:
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*
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* <code>
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* $conn->setTransactionIsolation('READ UNCOMMITTED');
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* </code>
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*
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* @param string standard isolation level
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* READ UNCOMMITTED (allows dirty reads)
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* READ COMMITTED (prevents dirty reads)
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* REPEATABLE READ (prevents nonrepeatable reads)
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* SERIALIZABLE (prevents phantom reads)
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*
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* @throws Doctrine_Connection_Exception if the feature is not supported by the driver
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* @throws PDOException if something fails at the PDO level
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* @return void
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*/
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public function setTransactionIsolation($isolation) {
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throw new Doctrine_Connection_Exception('Transaction isolation levels not supported by this database driver.');
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throw new Doctrine_Connection_Exception('Transaction isolation levels not supported by this driver.');
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}
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/**
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* getTransactionIsolation
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*
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* @throws Doctrine_Connection_Exception if the feature is not supported by the driver
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* @throws PDOException if something fails at the PDO level
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* @return string returns the current session transaction isolation level
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*/
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public function getTransactionIsolation() {
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throw new Doctrine_Connection_Exception('Fetching transaction isolation level not supported by this database driver.');
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throw new Doctrine_Connection_Exception('Fetching transaction isolation level not supported by this driver.');
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}
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/**
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* query
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* queries the database with Doctrine Query Language
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* queries the database using Doctrine Query Language
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*
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* @param string $query DQL query
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* @param array $params query parameters
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* <code>
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* $users = $conn->query('SELECT u.* FROM User u');
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*
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* $users = $conn->query('SELECT u.* FROM User u WHERE u.name LIKE ?', array('someone'));
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* </code>
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*
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* @param string $query DQL query
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* @param array $params query parameters
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* @see Doctrine_Query
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* @return Doctrine_Collection Collection of Doctrine_Record objects
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*/
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final public function query($query,array $params = array()) {
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public function query($query, array $params = array()) {
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$parser = new Doctrine_Query($this);
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return $parser->query($query, $params);
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@ -75,11 +75,18 @@ class Doctrine_Connection_Mysql extends Doctrine_Connection_Common {
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/**
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* Set the transacton isolation level.
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*
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* example :
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*
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* <code>
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* $conn->setTransactionIsolation('READ UNCOMMITTED');
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* </code>
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*
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* @param string standard isolation level
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* READ UNCOMMITTED (allows dirty reads)
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* READ COMMITTED (prevents dirty reads)
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* REPEATABLE READ (prevents nonrepeatable reads)
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* SERIALIZABLE (prevents phantom reads)
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*
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* @throws Doctrine_Connection_Mysql_Exception if using unknown isolation level
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* @throws PDOException if something fails at the PDO level
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* @return void
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@ -30,33 +30,89 @@ class Doctrine_Connection_Oracle extends Doctrine_Connection {
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/**
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* @var string $driverName the name of this connection driver
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*/
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protected $driverName = 'Oracle';
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protected $driverName = 'Oracle';
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public function __construct() {
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$this->supported = array(
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'sequences' => true,
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'indexes' => true,
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'summary_functions' => true,
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'order_by_text' => true,
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'current_id' => true,
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'affected_rows' => true,
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'transactions' => true,
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'savepoints' => true,
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'limit_queries' => true,
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'LOBs' => true,
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'replace' => 'emulated',
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'sub_selects' => true,
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'auto_increment' => false, // implementation is broken
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'primary_key' => true,
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'result_introspection' => true,
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'prepared_statements' => true,
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'identifier_quoting' => true,
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'pattern_escaping' => true,
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);
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$this->options['DBA_username'] = false;
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$this->options['DBA_password'] = false;
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$this->options['database_name_prefix'] = false;
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$this->options['emulate_database'] = true;
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$this->options['default_tablespace'] = false;
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$this->options['default_text_field_length'] = 2000;
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$this->options['result_prefetching'] = false;
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}
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/**
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* Adds an driver-specific LIMIT clause to the query
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*
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* @param string $query
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* @param mixed $limit
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* @param mixed $offset
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* @param string $query query to modify
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* @param integer $limit limit the number of rows
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* @param integer $offset start reading from given offset
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* @return string the modified query
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*/
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public function modifyLimitQuery($query,$limit,$offset) {
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public function modifyLimitQuery($query, $limit, $offset) {
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/**
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$e = explode("select ",strtolower($query));
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$e2 = explode(" from ",$e[1]);
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$fields = $e2[0];
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$query = "SELECT $fields FROM (SELECT rownum as linenum, $fields FROM ($query) WHERE rownum <= ($offset + $limit)) WHERE linenum >= ".++$offset;
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*/
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if (preg_match('/^\s*SELECT/i', $query)) {
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if ( ! preg_match('/\sFROM\s/i', $query)) {
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$query .= " FROM dual";
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}
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if ($limit > 0) {
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// taken from http://svn.ez.no/svn/ezcomponents/packages/Database
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$max = $offset + $limit;
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if ($offset > 0) {
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$min = $offset + 1;
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$query = 'SELECT * FROM (SELECT a.*, ROWNUM dctrn_rownum FROM (' . $query
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. ') a WHERE ROWNUM <= ' . $max . ') WHERE dctrn_rownum >= ' . $min;
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} else {
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$query = 'SELECT a.* FROM (' . $query .') a WHERE ROWNUM <= ' . $max;
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}
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}
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}
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return $query;
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}
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/**
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* Set the transacton isolation level.
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*
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* example:
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*
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* <code>
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* $conn->setTransactionIsolation('READ UNCOMMITTED');
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* </code>
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*
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* @param string standard isolation level
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* READ UNCOMMITTED (allows dirty reads)
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* READ COMMITTED (prevents dirty reads)
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* REPEATABLE READ (prevents nonrepeatable reads)
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* SERIALIZABLE (prevents phantom reads)
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @throws PDOException if something fails at the PDO level
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* @return void
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*/
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function setTransactionIsolation($isolation) {
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public function setTransactionIsolation($isolation) {
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switch ($isolation) {
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case 'READ UNCOMMITTED':
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$isolation = 'READ COMMITTED';
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@ -66,7 +122,7 @@ class Doctrine_Connection_Oracle extends Doctrine_Connection {
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case 'SERIALIZABLE':
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break;
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default:
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throw new Doctrine_Connection_Oracle_Exception('Isolation level ' . $isolation . 'is not supported.');
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throw new Doctrine_Connection_Oracle_Exception('Isolation level ' . $isolation . ' is not supported.');
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}
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$query = 'ALTER SESSION ISOLATION LEVEL ' . $isolation;
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@ -74,16 +130,28 @@ class Doctrine_Connection_Oracle extends Doctrine_Connection {
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}
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/**
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* returns the next value in the given sequence
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* @param string $sequence
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*
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* @param string $sequence name of the sequence
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* @throws PDOException if something went wrong at database level
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* @return integer
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*/
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public function getNextID($sequence) {
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$stmt = $this->query("SELECT $sequence.nextval FROM dual");
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public function nextId($sequence) {
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$stmt = $this->query('SELECT ' . $sequence . '.nextval FROM dual');
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$data = $stmt->fetch(PDO::FETCH_NUM);
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return $data[0];
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}
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/**
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* Returns the current id of a sequence
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*
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* @param string $sequence name of the sequence
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* @throws PDOException if something went wrong at database level
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* @return mixed id
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*/
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public function currId($sequence) {
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$sequence = $this->quoteIdentifier($this->getSequenceName($sequence), true);
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$stmt = $this->query('SELECT ' . $sequence . '.currval FROM dual');
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$data = $stmt->fetch(PDO::FETCH_NUM);
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return $data[0];
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}
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}
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