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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* 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 license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Db
* @subpackage Adapter
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Oci.php 19048 2009-11-19 18:15:05Z mikaelkael $
*/
/**
* @see Zend_Db_Adapter_Pdo_Abstract
*/
require_once 'Zend/Db/Adapter/Pdo/Abstract.php';
/**
* Class for connecting to Oracle databases and performing common operations.
*
* @category Zend
* @package Zend_Db
* @subpackage Adapter
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Db_Adapter_Pdo_Oci extends Zend_Db_Adapter_Pdo_Abstract
{
/**
* PDO type.
*
* @var string
*/
protected $_pdoType = 'oci';
/**
* Default class name for a DB statement.
*
* @var string
*/
protected $_defaultStmtClass = 'Zend_Db_Statement_Pdo_Oci';
/**
* 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,
'BINARY_DOUBLE' => Zend_Db::FLOAT_TYPE,
'BINARY_FLOAT' => Zend_Db::FLOAT_TYPE,
'NUMBER' => Zend_Db::FLOAT_TYPE
);
/**
* Creates a PDO DSN for the adapter from $this->_config settings.
*
* @return string
*/
protected function _dsn()
{
// baseline of DSN parts
$dsn = $this->_config;
if (isset($dsn['host'])) {
$tns = 'dbname=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)' .
'(HOST=' . $dsn['host'] . ')';
if (isset($dsn['port'])) {
$tns .= '(PORT=' . $dsn['port'] . ')';
} else {
$tns .= '(PORT=1521)';
}
$tns .= '))(CONNECT_DATA=(SID=' . $dsn['dbname'] . ')))';
} else {
$tns = 'dbname=' . $dsn['dbname'];
}
if (isset($dsn['charset'])) {
$tns .= ';charset=' . $dsn['charset'];
}
return $this->_pdoType . ':' . $tns;
}
/**
* Quote a raw string.
* Most PDO drivers have an implementation for the quote() method,
* but the Oracle OCI driver must use the same implementation as the
* Zend_Db_Adapter_Abstract class.
*
* @param string $value Raw string
* @return string Quoted string
*/
protected function _quote($value)
{
if (is_int($value) || is_float($value)) {
return $value;
}
$value = str_replace("'", "''", $value);
return "'" . addcslashes($value, "\000\n\r\\\032") . "'";
}
/**
* Quote a table identifier and alias.
*
* @param string|array|Zend_Db_Expr $ident The identifier or expression.
* @param string $alias An alias for the table.
* @return string The quoted identifier and alias.
*/
public function quoteTableAs($ident, $alias = null, $auto = false)
{
// Oracle doesn't allow the 'AS' keyword between the table identifier/expression and alias.
return $this->_quoteIdentifierAs($ident, $alias, $auto, ' ');
}
/**
* Returns a list of the tables in the database.
*
* @return array
*/
public function listTables()
{
$data = $this->fetchCol('SELECT table_name FROM all_tables');
return $data;
}
/**
* 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 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
* IDENTITY => integer; true if column is auto-generated with unique values
*
* @todo Discover integer unsigned property.
*
* @param string $tableName
* @param string $schemaName OPTIONAL
* @return array
*/
public function describeTable($tableName, $schemaName = null)
{
$version = $this->getServerVersion();
if (($version === null) || version_compare($version, '9.0.0', '>=')) {
$sql = "SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE,
TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH,
TC.DATA_SCALE, TC.DATA_PRECISION, C.CONSTRAINT_TYPE, CC.POSITION
FROM ALL_TAB_COLUMNS TC
LEFT JOIN (ALL_CONS_COLUMNS CC JOIN ALL_CONSTRAINTS C
ON (CC.CONSTRAINT_NAME = C.CONSTRAINT_NAME AND CC.TABLE_NAME = C.TABLE_NAME AND CC.OWNER = C.OWNER AND C.CONSTRAINT_TYPE = 'P'))
ON TC.TABLE_NAME = CC.TABLE_NAME AND TC.COLUMN_NAME = CC.COLUMN_NAME
WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME)";
$bind[':TBNAME'] = $tableName;
if ($schemaName) {
$sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)';
$bind[':SCNAME'] = $schemaName;
}
$sql .= ' ORDER BY TC.COLUMN_ID';
} else {
$subSql="SELECT AC.OWNER, AC.TABLE_NAME, ACC.COLUMN_NAME, AC.CONSTRAINT_TYPE, ACC.POSITION
from ALL_CONSTRAINTS AC, ALL_CONS_COLUMNS ACC
WHERE ACC.CONSTRAINT_NAME = AC.CONSTRAINT_NAME
AND ACC.TABLE_NAME = AC.TABLE_NAME
AND ACC.OWNER = AC.OWNER
AND AC.CONSTRAINT_TYPE = 'P'
AND UPPER(AC.TABLE_NAME) = UPPER(:TBNAME)";
$bind[':TBNAME'] = $tableName;
if ($schemaName) {
$subSql .= ' AND UPPER(ACC.OWNER) = UPPER(:SCNAME)';
$bind[':SCNAME'] = $schemaName;
}
$sql="SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE,
TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH,
TC.DATA_SCALE, TC.DATA_PRECISION, CC.CONSTRAINT_TYPE, CC.POSITION
FROM ALL_TAB_COLUMNS TC, ($subSql) CC
WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME)
AND TC.OWNER = CC.OWNER(+) AND TC.TABLE_NAME = CC.TABLE_NAME(+) AND TC.COLUMN_NAME = CC.COLUMN_NAME(+)";
if ($schemaName) {
$sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)';
}
$sql .= ' ORDER BY TC.COLUMN_ID';
}
$stmt = $this->query($sql, $bind);
/**
* Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection
*/
$result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
$table_name = 0;
$owner = 1;
$column_name = 2;
$data_type = 3;
$data_default = 4;
$nullable = 5;
$column_id = 6;
$data_length = 7;
$data_scale = 8;
$data_precision = 9;
$constraint_type = 10;
$position = 11;
$desc = array();
foreach ($result as $key => $row) {
list ($primary, $primaryPosition, $identity) = array(false, null, false);
if ($row[$constraint_type] == 'P') {
$primary = true;
$primaryPosition = $row[$position];
/**
* Oracle does not support auto-increment keys.
*/
$identity = false;
}
$desc[$this->foldCase($row[$column_name])] = array(
'SCHEMA_NAME' => $this->foldCase($row[$owner]),
'TABLE_NAME' => $this->foldCase($row[$table_name]),
'COLUMN_NAME' => $this->foldCase($row[$column_name]),
'COLUMN_POSITION' => $row[$column_id],
'DATA_TYPE' => $row[$data_type],
'DEFAULT' => $row[$data_default],
'NULLABLE' => (bool) ($row[$nullable] == 'Y'),
'LENGTH' => $row[$data_length],
'SCALE' => $row[$data_scale],
'PRECISION' => $row[$data_precision],
'UNSIGNED' => null, // @todo
'PRIMARY' => $primary,
'PRIMARY_POSITION' => $primaryPosition,
'IDENTITY' => $identity
);
}
return $desc;
}
/**
* Return the most recent value from the specified sequence in the database.
* This is supported only on RDBMS brands that support sequences
* (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null.
*
* @param string $sequenceName
* @return integer
*/
public function lastSequenceId($sequenceName)
{
$this->_connect();
$value = $this->fetchOne('SELECT '.$this->quoteIdentifier($sequenceName, true).'.CURRVAL FROM dual');
return $value;
}
/**
* Generate a new value from the specified sequence in the database, and return it.
* This is supported only on RDBMS brands that support sequences
* (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null.
*
* @param string $sequenceName
* @return integer
*/
public function nextSequenceId($sequenceName)
{
$this->_connect();
$value = $this->fetchOne('SELECT '.$this->quoteIdentifier($sequenceName, true).'.NEXTVAL FROM dual');
return $value;
}
/**
* 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.
*
* Oracle does not support IDENTITY columns, so if the sequence is not
* specified, this method returns null.
*
* @param string $tableName OPTIONAL Name of table.
* @param string $primaryKey OPTIONAL Name of primary key column.
* @return string
* @throws Zend_Db_Adapter_Oracle_Exception
*/
public function lastInsertId($tableName = null, $primaryKey = null)
{
if ($tableName !== null) {
$sequenceName = $tableName;
if ($primaryKey) {
$sequenceName .= $this->foldCase("_$primaryKey");
}
$sequenceName .= $this->foldCase('_seq');
return $this->lastSequenceId($sequenceName);
}
// No support for IDENTITY columns; return null
return null;
}
/**
* Adds an adapter-specific LIMIT clause to the SELECT statement.
*
* @param string $sql
* @param integer $count
* @param integer $offset
* @throws Zend_Db_Adapter_Exception
* @return string
*/
public function limit($sql, $count, $offset = 0)
{
$count = intval($count);
if ($count <= 0) {
/** @see Zend_Db_Adapter_Exception */
require_once 'Zend/Db/Adapter/Exception.php';
throw new Zend_Db_Adapter_Exception("LIMIT argument count=$count is not valid");
}
$offset = intval($offset);
if ($offset < 0) {
/** @see Zend_Db_Adapter_Exception */
require_once 'Zend/Db/Adapter/Exception.php';
throw new Zend_Db_Adapter_Exception("LIMIT argument offset=$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;
}
}
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