/concrete/libraries/3rdparty/Zend/Db/Adapter/Mysql.php
PHP | 425 lines | 232 code | 31 blank | 162 comment | 35 complexity | 16f425291b8045f61316a54e9d294041 MD5 | raw file
- <?php
- /**
- * LICENSE
- *
- * This source file is subject to the new BSD license that is bundled
- * with this package in the file LICENSE.
- *
- * If you did not receive a copy of the license and are unable to
- * obtain it through the world-wide-web, please send an email
- * to kontakt@beberlei.de so we can send you a copy immediately.
- *
- * @author Benjamin Eberlei (kontakt@beberlei.de)
- * @copyright Copyright (c) 2009 Benjamin Eberlei
- * @license New BSD License
- * @package Whitewashing
- * @subpackage Db
- */
- /**
- * @see Zend_Db_Adapter_Abstract
- */
- require_once "Zend/Db/Adapter/Abstract.php";
- /**
- * @see Whitewashing_Db_Statement_Mysql
- */
- require_once "Zend/Db/Statement/Mysql.php";
- class Zend_Db_Adapter_Mysql extends Zend_Db_Adapter_Abstract
- {
- /**
- * Keys are UPPERCASE SQL datatypes or the constants
- * Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE.
- *
- * Values are:
- * 0 = 32-bit integer
- * 1 = 64-bit integer
- * 2 = float or decimal
- *
- * @var array Associative array of datatypes to values 0, 1, or 2.
- */
- protected $_numericDataTypes = array(
- Zend_Db::INT_TYPE => Zend_Db::INT_TYPE,
- Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
- Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE,
- 'INT' => Zend_Db::INT_TYPE,
- 'INTEGER' => Zend_Db::INT_TYPE,
- 'MEDIUMINT' => Zend_Db::INT_TYPE,
- 'SMALLINT' => Zend_Db::INT_TYPE,
- 'TINYINT' => Zend_Db::INT_TYPE,
- 'BIGINT' => Zend_Db::BIGINT_TYPE,
- 'SERIAL' => Zend_Db::BIGINT_TYPE,
- 'DEC' => Zend_Db::FLOAT_TYPE,
- 'DECIMAL' => Zend_Db::FLOAT_TYPE,
- 'DOUBLE' => Zend_Db::FLOAT_TYPE,
- 'DOUBLE PRECISION' => Zend_Db::FLOAT_TYPE,
- 'FIXED' => Zend_Db::FLOAT_TYPE,
- 'FLOAT' => Zend_Db::FLOAT_TYPE
- );
- public function setConnectionResource($connection)
- {
- $this->_connection = $connection;
- }
- /**
- * Returns a list of the tables in the database.
- *
- * @return array
- */
- public function listTables()
- {
- $tables = array();
- $query = "SHOW TABLES FROM ".$this->quoteIdentifier($this->_config['dbname']);
- if($rs = mysql_query($query)) {
- while($row = mysql_fetch_row($rs)) {
- $tables[] = $row[0];
- }
- }
- return $tables;
- }
- /**
- * Returns the column descriptions for a table.
- *
- * The return value is an associative array keyed by the column name,
- * as returned by the RDBMS.
- *
- * The value of each array element is an associative array
- * with the following keys:
- *
- * SCHEMA_NAME => string; name of database or schema
- * TABLE_NAME => string;
- * COLUMN_NAME => string; column name
- * COLUMN_POSITION => number; ordinal position of column in table
- * DATA_TYPE => string; SQL datatype name of column
- * DEFAULT => string; default expression of column, null if none
- * NULLABLE => boolean; true if column can have nulls
- * LENGTH => number; length of CHAR/VARCHAR
- * SCALE => number; scale of NUMERIC/DECIMAL
- * PRECISION => number; precision of NUMERIC/DECIMAL
- * UNSIGNED => boolean; unsigned property of an integer type
- * PRIMARY => boolean; true if column is part of the primary key
- * PRIMARY_POSITION => integer; position of column in primary key
- *
- * @param string $tableName
- * @param string $schemaName OPTIONAL
- * @return array
- */
- public function describeTable($tableName, $schemaName = null)
- {
- /**
- * @todo use INFORMATION_SCHEMA someday when
- * MySQL's implementation isn't too slow.
- */
- if ($schemaName) {
- $sql = 'DESCRIBE ' . $this->quoteIdentifier("$schemaName.$tableName", true);
- } else {
- $sql = 'DESCRIBE ' . $this->quoteIdentifier($tableName, true);
- }
- /**
- * Use mysqli extension API, because DESCRIBE doesn't work
- * well as a prepared statement on MySQL 4.1.
- */
- if ($queryResult = mysql_query($sql)) {
- while ($row = mysql_fetch_assoc($queryResult)) {
- $result[] = $row;
- }
- mysql_free_result($queryResult);
- } else {
- /**
- * @see Zend_Db_Adapter_Mysqli_Exception
- */
- require_once 'Zend/Db/Adapter/Mysqli/Exception.php';
- throw new Zend_Db_Adapter_Mysqli_Exception($this->getConnection()->error);
- }
- $desc = array();
- $row_defaults = array(
- 'Length' => null,
- 'Scale' => null,
- 'Precision' => null,
- 'Unsigned' => null,
- 'Primary' => false,
- 'PrimaryPosition' => null,
- 'Identity' => false
- );
- $i = 1;
- $p = 1;
- foreach ($result as $key => $row) {
- $row = array_merge($row_defaults, $row);
- if (preg_match('/unsigned/', $row['Type'])) {
- $row['Unsigned'] = true;
- }
- if (preg_match('/^((?:var)?char)\((\d+)\)/', $row['Type'], $matches)) {
- $row['Type'] = $matches[1];
- $row['Length'] = $matches[2];
- } else if (preg_match('/^decimal\((\d+),(\d+)\)/', $row['Type'], $matches)) {
- $row['Type'] = 'decimal';
- $row['Precision'] = $matches[1];
- $row['Scale'] = $matches[2];
- } else if (preg_match('/^float\((\d+),(\d+)\)/', $row['Type'], $matches)) {
- $row['Type'] = 'float';
- $row['Precision'] = $matches[1];
- $row['Scale'] = $matches[2];
- } else if (preg_match('/^((?:big|medium|small|tiny)?int)\((\d+)\)/', $row['Type'], $matches)) {
- $row['Type'] = $matches[1];
- /**
- * The optional argument of a MySQL int type is not precision
- * or length; it is only a hint for display width.
- */
- }
- if (strtoupper($row['Key']) == 'PRI') {
- $row['Primary'] = true;
- $row['PrimaryPosition'] = $p;
- if ($row['Extra'] == 'auto_increment') {
- $row['Identity'] = true;
- } else {
- $row['Identity'] = false;
- }
- ++$p;
- }
- $desc[$this->foldCase($row['Field'])] = array(
- 'SCHEMA_NAME' => null, // @todo
- 'TABLE_NAME' => $this->foldCase($tableName),
- 'COLUMN_NAME' => $this->foldCase($row['Field']),
- 'COLUMN_POSITION' => $i,
- 'DATA_TYPE' => $row['Type'],
- 'DEFAULT' => $row['Default'],
- 'NULLABLE' => (bool) ($row['Null'] == 'YES'),
- 'LENGTH' => $row['Length'],
- 'SCALE' => $row['Scale'],
- 'PRECISION' => $row['Precision'],
- 'UNSIGNED' => $row['Unsigned'],
- 'PRIMARY' => $row['Primary'],
- 'PRIMARY_POSITION' => $row['PrimaryPosition'],
- 'IDENTITY' => $row['Identity']
- );
- ++$i;
- }
- return $desc;
- }
- /**
- * Creates a connection to the database.
- *
- * @return void
- */
- protected function _connect()
- {
- if(is_resource($this->_connection)) {
- return;
- }
- $this->_connection = @mysql_connect(
- $this->_config['host'],
- $this->_config['username'],
- $this->_config['password']
- );
- if($this->_connection == false) {
- $this->_throwException();
- }
- if(@mysql_select_db($this->_config['dbname'], $this->_connection) == false) {
- $this->_throwException();
- }
- if (!empty($this->_config['charset'])) {
- mysql_set_charset($this->_config['charset'], $this->_connection);
- }
- }
- private function _throwException($message=null)
- {
- require_once "Zend/Db/Adapter/Mysql/Exception.php";
- if($message === null) {
- $message = mysql_error($this->_connection)." (".mysql_errno($this->_connection).")";
- }
- throw new Zend_Db_Adapter_Mysql_Exception($message);
- }
- /**
- * Test if a connection is active
- *
- * @return boolean
- */
- public function isConnected()
- {
- return(is_resource($this->_connection));
- }
- /**
- * Force the connection to close.
- *
- * @return void
- */
- public function closeConnection()
- {
- if($this->isConnected()) {
- mysql_close($this->_connection);
- $this->_connection = null;
- }
- }
- /**
- * Prepare a statement and return a PDOStatement-like object.
- *
- * @param string|Zend_Db_Select $sql SQL query
- * @return Zend_Db_Statement|PDOStatement
- */
- public function prepare($sql)
- {
- return new Zend_Db_Statement_Mysql($this, $sql);
- }
- /**
- * Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column.
- *
- * As a convention, on RDBMS brands that support sequences
- * (e.g. Oracle, PostgreSQL, DB2), this method forms the name of a sequence
- * from the arguments and returns the last id generated by that sequence.
- * On RDBMS brands that support IDENTITY/AUTOINCREMENT columns, this method
- * returns the last value generated for such a column, and the table name
- * argument is disregarded.
- *
- * @param string $tableName OPTIONAL Name of table.
- * @param string $primaryKey OPTIONAL Name of primary key column.
- * @return string
- */
- public function lastInsertId($tableName = null, $primaryKey = null)
- {
- return (string)mysql_insert_id($this->_connection);
- }
- /**
- * Begin a transaction.
- */
- protected function _beginTransaction()
- {
- $this->_connect();
- mysql_query("START TRANSACTION");
- }
- /**
- * Commit a transaction.
- */
- protected function _commit()
- {
- mysql_query("COMMIT");
- }
- /**
- * Roll-back a transaction.
- */
- protected function _rollBack()
- {
- mysql_query("ROLLBACK");
- }
- /**
- * Set the fetch mode.
- *
- * @param integer $mode
- * @return void
- * @throws Zend_Db_Adapter_Exception
- */
- public function setFetchMode($mode)
- {
- switch($mode) {
- case Zend_Db::FETCH_ASSOC:
- case Zend_Db::FETCH_NUM:
- case Zend_Db::FETCH_BOTH:
- case Zend_Db::FETCH_OBJ:
- case Zend_Db::FETCH_BOUND:
- $this->_fetchMode = $mode;
- break;
- case Zend_Db::FETCH_NAMED:
- case Zend_Db::FETCH_LAZY:
- default:
- $this->_throwException("Invalid fetch mode '".$mode."' specified");
- }
- }
- /**
- * Adds an adapter-specific LIMIT clause to the SELECT statement.
- *
- * @param mixed $sql
- * @param integer $count
- * @param integer $offset
- * @return string
- */
- public function limit($sql, $count, $offset = 0)
- {
- $count = intval($count);
- if ($count <= 0) {
- $this->_throwException("LIMIT argument count=$count is not valid");
- }
- $offset = intval($offset);
- if ($offset < 0) {
- $this->_throwException("LIMIT argument offset=$offset is not valid");
- }
- $sql .= " LIMIT $count";
- if ($offset > 0) {
- $sql .= " OFFSET $offset";
- }
- return $sql;
- }
- /**
- * Check if the adapter supports real SQL parameters.
- *
- * @param string $type 'positional' or 'named'
- * @return bool
- */
- public function supportsParameters($type)
- {
- if($type == 'positional') {
- return true;
- }
- return false;
- }
- /**
- * Retrieve server version in PHP style
- *
- * @return string
- */
- public function getServerVersion()
- {
- $this->_connect();
- return mysql_get_server_info($this->_connection);
- }
- /**
- * Returns the symbol the adapter uses for delimited identifiers.
- *
- * @return string
- */
- public function getQuoteIdentifierSymbol()
- {
- return '`';
- }
- /**
- * Quote a raw string.
- *
- * @param mixed $value Raw string
- *
- * @return string Quoted string
- */
- protected function _quote($value)
- {
- if (is_int($value) || is_float($value)) {
- return $value;
- }
- $this->_connect();
- return "'" . mysql_real_escape_string($value, $this->_connection) . "'";
- }
- }