379 lines
14 KiB
PHP
379 lines
14 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Db
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* @subpackage Adapter
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Oci.php 16203 2009-06-21 18:56:17Z thomas $
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*/
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/**
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* @see Zend_Db_Adapter_Pdo_Abstract
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*/
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require_once 'Zend/Db/Adapter/Pdo/Abstract.php';
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/**
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* Class for connecting to Oracle databases and performing common operations.
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*
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* @category Zend
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* @package Zend_Db
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* @subpackage Adapter
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Db_Adapter_Pdo_Oci extends Zend_Db_Adapter_Pdo_Abstract
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{
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/**
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* PDO type.
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*
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* @var string
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*/
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protected $_pdoType = 'oci';
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/**
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* Default class name for a DB statement.
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*
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* @var string
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*/
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protected $_defaultStmtClass = 'Zend_Db_Statement_Pdo_Oci';
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/**
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* Keys are UPPERCASE SQL datatypes or the constants
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* Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE.
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*
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* Values are:
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* 0 = 32-bit integer
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* 1 = 64-bit integer
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* 2 = float or decimal
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*
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* @var array Associative array of datatypes to values 0, 1, or 2.
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*/
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protected $_numericDataTypes = array(
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Zend_Db::INT_TYPE => Zend_Db::INT_TYPE,
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Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
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Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE,
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'BINARY_DOUBLE' => Zend_Db::FLOAT_TYPE,
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'BINARY_FLOAT' => Zend_Db::FLOAT_TYPE,
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'NUMBER' => Zend_Db::FLOAT_TYPE
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);
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/**
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* Creates a PDO DSN for the adapter from $this->_config settings.
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*
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* @return string
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*/
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protected function _dsn()
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{
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// baseline of DSN parts
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$dsn = $this->_config;
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if (isset($dsn['host'])) {
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$tns = 'dbname=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)' .
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'(HOST=' . $dsn['host'] . ')';
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if (isset($dsn['port'])) {
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$tns .= '(PORT=' . $dsn['port'] . ')';
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} else {
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$tns .= '(PORT=1521)';
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}
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$tns .= '))(CONNECT_DATA=(SID=' . $dsn['dbname'] . ')))';
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} else {
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$tns = 'dbname=' . $dsn['dbname'];
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}
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if (isset($dsn['charset'])) {
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$tns .= ';charset=' . $dsn['charset'];
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}
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return $this->_pdoType . ':' . $tns;
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}
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/**
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* Quote a raw string.
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* Most PDO drivers have an implementation for the quote() method,
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* but the Oracle OCI driver must use the same implementation as the
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* Zend_Db_Adapter_Abstract class.
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*
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* @param string $value Raw string
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* @return string Quoted string
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*/
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protected function _quote($value)
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{
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if (is_int($value) || is_float($value)) {
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return $value;
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}
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$value = str_replace("'", "''", $value);
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return "'" . addcslashes($value, "\000\n\r\\\032") . "'";
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}
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/**
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* Quote a table identifier and alias.
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*
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* @param string|array|Zend_Db_Expr $ident The identifier or expression.
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* @param string $alias An alias for the table.
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* @return string The quoted identifier and alias.
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*/
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public function quoteTableAs($ident, $alias = null, $auto = false)
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{
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// Oracle doesn't allow the 'AS' keyword between the table identifier/expression and alias.
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return $this->_quoteIdentifierAs($ident, $alias, $auto, ' ');
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}
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/**
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* Returns a list of the tables in the database.
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*
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* @return array
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*/
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public function listTables()
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{
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$data = $this->fetchCol('SELECT table_name FROM all_tables');
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return $data;
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}
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/**
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* Returns the column descriptions for a table.
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*
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* The return value is an associative array keyed by the column name,
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* as returned by the RDBMS.
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*
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* The value of each array element is an associative array
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* with the following keys:
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*
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* SCHEMA_NAME => string; name of schema
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* TABLE_NAME => string;
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* COLUMN_NAME => string; column name
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* COLUMN_POSITION => number; ordinal position of column in table
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* DATA_TYPE => string; SQL datatype name of column
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* DEFAULT => string; default expression of column, null if none
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* NULLABLE => boolean; true if column can have nulls
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* LENGTH => number; length of CHAR/VARCHAR
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* SCALE => number; scale of NUMERIC/DECIMAL
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* PRECISION => number; precision of NUMERIC/DECIMAL
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* UNSIGNED => boolean; unsigned property of an integer type
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* PRIMARY => boolean; true if column is part of the primary key
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* PRIMARY_POSITION => integer; position of column in primary key
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* IDENTITY => integer; true if column is auto-generated with unique values
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*
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* @todo Discover integer unsigned property.
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*
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* @param string $tableName
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* @param string $schemaName OPTIONAL
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* @return array
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*/
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public function describeTable($tableName, $schemaName = null)
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{
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$version = $this->getServerVersion();
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if (($version === null) || version_compare($version, '9.0.0', '>=')) {
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$sql = "SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE,
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TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH,
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TC.DATA_SCALE, TC.DATA_PRECISION, C.CONSTRAINT_TYPE, CC.POSITION
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FROM ALL_TAB_COLUMNS TC
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LEFT JOIN (ALL_CONS_COLUMNS CC JOIN ALL_CONSTRAINTS C
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ON (CC.CONSTRAINT_NAME = C.CONSTRAINT_NAME AND CC.TABLE_NAME = C.TABLE_NAME AND C.CONSTRAINT_TYPE = 'P'))
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ON TC.TABLE_NAME = CC.TABLE_NAME AND TC.COLUMN_NAME = CC.COLUMN_NAME
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WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME)";
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$bind[':TBNAME'] = $tableName;
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if ($schemaName) {
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$sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)';
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$bind[':SCNAME'] = $schemaName;
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}
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$sql .= ' ORDER BY TC.COLUMN_ID';
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} else {
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$subSql="SELECT AC.OWNER, AC.TABLE_NAME, ACC.COLUMN_NAME, AC.CONSTRAINT_TYPE, ACC.POSITION
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from ALL_CONSTRAINTS AC, ALL_CONS_COLUMNS ACC
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WHERE ACC.CONSTRAINT_NAME = AC.CONSTRAINT_NAME
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AND ACC.TABLE_NAME = AC.TABLE_NAME
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AND ACC.OWNER = AC.OWNER
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AND AC.CONSTRAINT_TYPE = 'P'
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AND UPPER(AC.TABLE_NAME) = UPPER(:TBNAME)";
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$bind[':TBNAME'] = $tableName;
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if ($schemaName) {
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$subSql .= ' AND UPPER(ACC.OWNER) = UPPER(:SCNAME)';
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$bind[':SCNAME'] = $schemaName;
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}
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$sql="SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE,
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TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH,
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TC.DATA_SCALE, TC.DATA_PRECISION, CC.CONSTRAINT_TYPE, CC.POSITION
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FROM ALL_TAB_COLUMNS TC, ($subSql) CC
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WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME)
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AND TC.OWNER = CC.OWNER(+) AND TC.TABLE_NAME = CC.TABLE_NAME(+) AND TC.COLUMN_NAME = CC.COLUMN_NAME(+)";
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if ($schemaName) {
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$sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)';
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}
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$sql .= ' ORDER BY TC.COLUMN_ID';
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}
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$stmt = $this->query($sql, $bind);
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/**
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* Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection
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*/
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$result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
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$table_name = 0;
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$owner = 1;
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$column_name = 2;
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$data_type = 3;
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$data_default = 4;
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$nullable = 5;
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$column_id = 6;
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$data_length = 7;
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$data_scale = 8;
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$data_precision = 9;
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$constraint_type = 10;
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$position = 11;
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$desc = array();
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foreach ($result as $key => $row) {
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list ($primary, $primaryPosition, $identity) = array(false, null, false);
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if ($row[$constraint_type] == 'P') {
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$primary = true;
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$primaryPosition = $row[$position];
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/**
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* Oracle does not support auto-increment keys.
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*/
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$identity = false;
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}
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$desc[$this->foldCase($row[$column_name])] = array(
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'SCHEMA_NAME' => $this->foldCase($row[$owner]),
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'TABLE_NAME' => $this->foldCase($row[$table_name]),
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'COLUMN_NAME' => $this->foldCase($row[$column_name]),
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'COLUMN_POSITION' => $row[$column_id],
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'DATA_TYPE' => $row[$data_type],
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'DEFAULT' => $row[$data_default],
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'NULLABLE' => (bool) ($row[$nullable] == 'Y'),
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'LENGTH' => $row[$data_length],
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'SCALE' => $row[$data_scale],
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'PRECISION' => $row[$data_precision],
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'UNSIGNED' => null, // @todo
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'PRIMARY' => $primary,
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'PRIMARY_POSITION' => $primaryPosition,
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'IDENTITY' => $identity
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);
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}
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return $desc;
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}
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/**
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* Return the most recent value from the specified sequence in the database.
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* This is supported only on RDBMS brands that support sequences
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* (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null.
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*
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* @param string $sequenceName
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* @return integer
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*/
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public function lastSequenceId($sequenceName)
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{
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$this->_connect();
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$value = $this->fetchOne('SELECT '.$this->quoteIdentifier($sequenceName, true).'.CURRVAL FROM dual');
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return $value;
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}
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/**
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* Generate a new value from the specified sequence in the database, and return it.
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* This is supported only on RDBMS brands that support sequences
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* (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null.
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*
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* @param string $sequenceName
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* @return integer
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*/
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public function nextSequenceId($sequenceName)
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{
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$this->_connect();
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$value = $this->fetchOne('SELECT '.$this->quoteIdentifier($sequenceName, true).'.NEXTVAL FROM dual');
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return $value;
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}
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/**
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* Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column.
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*
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* As a convention, on RDBMS brands that support sequences
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* (e.g. Oracle, PostgreSQL, DB2), this method forms the name of a sequence
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* from the arguments and returns the last id generated by that sequence.
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* On RDBMS brands that support IDENTITY/AUTOINCREMENT columns, this method
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* returns the last value generated for such a column, and the table name
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* argument is disregarded.
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*
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* Oracle does not support IDENTITY columns, so if the sequence is not
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* specified, this method returns null.
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*
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* @param string $tableName OPTIONAL Name of table.
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* @param string $primaryKey OPTIONAL Name of primary key column.
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* @return string
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* @throws Zend_Db_Adapter_Oracle_Exception
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*/
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public function lastInsertId($tableName = null, $primaryKey = null)
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{
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if ($tableName !== null) {
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$sequenceName = $tableName;
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if ($primaryKey) {
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$sequenceName .= $this->foldCase("_$primaryKey");
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}
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$sequenceName .= $this->foldCase('_seq');
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return $this->lastSequenceId($sequenceName);
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}
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// No support for IDENTITY columns; return null
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return null;
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}
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/**
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||
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* Adds an adapter-specific LIMIT clause to the SELECT statement.
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*
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* @param string $sql
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* @param integer $count
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* @param integer $offset
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* @throws Zend_Db_Adapter_Exception
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* @return string
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*/
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public function limit($sql, $count, $offset = 0)
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{
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$count = intval($count);
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if ($count <= 0) {
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/** @see Zend_Db_Adapter_Exception */
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require_once 'Zend/Db/Adapter/Exception.php';
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throw new Zend_Db_Adapter_Exception("LIMIT argument count=$count is not valid");
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}
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$offset = intval($offset);
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if ($offset < 0) {
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/** @see Zend_Db_Adapter_Exception */
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require_once 'Zend/Db/Adapter/Exception.php';
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|
throw new Zend_Db_Adapter_Exception("LIMIT argument offset=$offset is not valid");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Oracle does not implement the LIMIT clause as some RDBMS do.
|
||
|
|
* We have to simulate it with subqueries and ROWNUM.
|
||
|
|
* Unfortunately because we use the column wildcard "*",
|
||
|
|
* this puts an extra column into the query result set.
|
||
|
|
*/
|
||
|
|
$limit_sql = "SELECT z2.*
|
||
|
|
FROM (
|
||
|
|
SELECT z1.*, ROWNUM AS \"zend_db_rownum\"
|
||
|
|
FROM (
|
||
|
|
" . $sql . "
|
||
|
|
) z1
|
||
|
|
) z2
|
||
|
|
WHERE z2.\"zend_db_rownum\" BETWEEN " . ($offset+1) . " AND " . ($offset+$count);
|
||
|
|
return $limit_sql;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|