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597 lines
19 KiB
PHP
597 lines
19 KiB
PHP
<?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 ZendX
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* @package ZendX_Db
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* @subpackage Adapter
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* @copyright Copyright (c) 2005-2008 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: $
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*/
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/**
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* @see Zend_Db_Adapter_Abstract
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*/
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require_once 'Zend/Db/Adapter/Abstract.php';
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/**
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* @see Zend_Db_Profiler
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*/
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require_once 'Zend/Db/Profiler.php';
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/**
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* @see Zend_Db_Select
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*/
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require_once 'Zend/Db/Select.php';
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/**
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* @see Zend_Db_Statement_Firebird
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*/
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require_once 'ZendX/Db/Statement/Firebird.php';
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/**
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* @category ZendX
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* @package ZendX_Db
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* @subpackage Adapter
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* @copyright Copyright (c) 2005-2008 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 ZendX_Db_Adapter_Firebird extends Zend_Db_Adapter_Abstract
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{
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/**
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* Specifies whether the adapter automatically quotes identifiers.
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* If true, most SQL generated by Zend_Db classes applies
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* identifier quoting automatically.
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* If false, developer must quote identifiers themselves
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* by calling quoteIdentifier().
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*
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* @var bool
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*/
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protected $_autoQuoteIdentifiers = true;
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/**
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* The transaction resource.
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*
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* @var transaction
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*/
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protected $_transResource = null;
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/**
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* Return the status of current transaction.
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* @return bool
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*/
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public function getTransaction()
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{
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return (is_resource($this->_transResource) ? $this->_transResource : null);
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}
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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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'SMALLINT' => Zend_Db::INT_TYPE,
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'INT' => Zend_Db::INT_TYPE,
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'INTEGER' => Zend_Db::INT_TYPE,
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'BIGINT' => Zend_Db::BIGINT_TYPE,
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'INT64' => Zend_Db::BIGINT_TYPE,
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'DECIMAL' => Zend_Db::FLOAT_TYPE,
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'DOUBLE PRECISION' => Zend_Db::FLOAT_TYPE,
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'DOUBLE' => Zend_Db::FLOAT_TYPE,
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'NUMERIC' => Zend_Db::FLOAT_TYPE,
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'FLOAT' => Zend_Db::FLOAT_TYPE
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);
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/**
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* Quote a raw string.
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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 "'" . $value . "'";
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}
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/**
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* Returns a list of the tables in the database.
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*
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* @return array
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*/
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public function listTables()
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{
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$data = $this->fetchCol('SELECT RDB$RELATION_NAME FROM RDB$RELATIONS WHERE RDB$SYSTEM_FLAG = 0');
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foreach($data as &$v)
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$v = trim($v);
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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 database or 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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* @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, $schemaName = null)
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{
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$fieldMaps = array(
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'TEXT' => 'CHAR',
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'VARYING' => 'VARCHAR',
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'SHORT' => 'SMALLINT',
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'LONG' => 'INTEGER',
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'FLOAT' => 'FLOAT',
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'INT64' => array(0 => 'BIGINT', 'NUMERIC', 'DECIMAL'),
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'DATE' => 'DATE',
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'TIME' => 'TIME',
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'BLOB' => 'BLOB',
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'DOUBLE' => 'DOUBLE PRECISION',
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'TIMESTAMP' => 'TIMESTAMP'
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);
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$sql = 'select
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RF.RDB$RELATION_NAME, \'\', RF.RDB$FIELD_NAME, T.RDB$TYPE_NAME,
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RF.RDB$DEFAULT_VALUE, RF.RDB$NULL_FLAG, RF.RDB$FIELD_POSITION,
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F.RDB$CHARACTER_LENGTH, F.RDB$FIELD_SCALE, F.RDB$FIELD_PRECISION,
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IXS.RDB$FIELD_POSITION, IXS.RDB$FIELD_POSITION, F.RDB$FIELD_SUB_TYPE
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from RDB$RELATION_FIELDS RF
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left join RDB$RELATION_CONSTRAINTS RC
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on (RF.RDB$RELATION_NAME = RC.RDB$RELATION_NAME and RC.RDB$CONSTRAINT_TYPE = \'PRIMARY KEY\')
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left join RDB$INDEX_SEGMENTS IXS
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on (IXS.RDB$FIELD_NAME = RF.RDB$FIELD_NAME and RC.RDB$INDEX_NAME = IXS.RDB$INDEX_NAME)
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inner join RDB$FIELDS F on (RF.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME)
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inner join RDB$TYPES T on (T.RDB$TYPE = F.RDB$FIELD_TYPE and T.RDB$FIELD_NAME = \'RDB$FIELD_TYPE\')
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where ' . $this->quoteInto('(UPPER(RF.RDB$RELATION_NAME) = UPPER(?)) ', $tableName) . '
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order by RF.RDB$FIELD_POSITION';
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$stmt = $this->query($sql);
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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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$position = 11;
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$sub_type = 12;
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$desc = array();
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foreach ($result as $key => $row) {
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list ($primary, $primaryPosition, $identity) = array(false, null, false);
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if (strlen($row[$constraint_type])) {
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$primary = true;
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$primaryPosition = $row[$position];
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/**
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* Firebird does not support auto-increment keys.
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*/
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$identity = false;
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}
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$dataType = trim($row[$data_type]);
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$newType = $fieldMaps[$dataType];
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if (is_array($newType) && $dataType == 'INT64')
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$newType = $newType[$row[$sub_type]];
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$row[$data_type] = $newType;
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$desc[trim($row[$column_name])] = array(
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'SCHEMA_NAME' => '',
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'TABLE_NAME' => trim($row[$table_name]),
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'COLUMN_NAME' => trim($row[$column_name]),
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'COLUMN_POSITION' => $row[$column_id] +1,
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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] != '1'),
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'LENGTH' => $row[$data_length],
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'SCALE' => ($row[$data_scale] == 0 ? null : $row[$data_scale]),
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'PRECISION' => ($row[$data_precision] == 0 ? null : $row[$data_precision]),
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'UNSIGNED' => false,
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'PRIMARY' => $primary,
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'PRIMARY_POSITION' => ($primary ? $primaryPosition+1 : null),
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'IDENTITY' => $identity
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);
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}
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return $desc;
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}
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/**
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* Format a connection string to connect to database
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*
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* @return void
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*/
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protected function _formatDbConnString($host, $port, $dbname)
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{
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if (is_numeric($port))
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$port = '/' . (integer) $port;
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if ($dbname)
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$dbname = ':' . $dbname;
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return $host . $port . $dbname;
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}
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/**
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* Creates a connection to the database.
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*
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* @return void
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* @throws ZendX_Db_Adapter_Firebird_Exception
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*/
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protected function _connect()
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{
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if (isset($this->_connection) && is_resource($this->_connection)) {
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return;
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}
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if (!extension_loaded('interbase')) {
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/**
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* @see ZendX_Db_Adapter_Firebird_Exception
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*/
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require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
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throw new ZendX_Db_Adapter_Firebird_Exception('The Interbase extension is required for this adapter but the extension is not loaded');
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}
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// Suppress connection warnings here.
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// Throw an exception instead.
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$this->_connection = @ibase_connect(
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$this->_formatDbConnString($this->_config['host'],$this->_config['port'] ,$this->_config['dbname']),
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$this->_config['username'],
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$this->_config['password'],
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$this->_config['charset'],
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$this->_config['buffers'],
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$this->_config['dialect'],
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$this->_config['role']
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);
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if ($this->_connection === false) {
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/**
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* @see ZendX_Db_Adapter_Firebird_Exception
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*/
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require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
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throw new ZendX_Db_Adapter_Firebird_Exception(ibase_errmsg());
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}
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}
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/**
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* Force the connection to close.
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*
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* @return void
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*/
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public function closeConnection()
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{
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if (is_resource($this->_transResource)) {
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ibase_rollback($this->_transResource);
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}
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$this->_transResource = null;
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if (is_resource($this->_connection)) {
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unset($this->_connection);
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}
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//$this->_connection = false;
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}
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/**
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* Prepare a statement and return a Statement resource.
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*
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* @param string $sql SQL query
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* @return ZendX_Db_Statement_Firebird
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*/
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public function prepare($sql)
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{
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$this->_connect();
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$stmt = new ZendX_Db_Statement_Firebird($this, $sql);
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if ($stmt === false) {
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return false;
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}
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$stmt->setFetchMode($this->_fetchMode);
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return $stmt;
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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. Firebird, 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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* Firebird 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 $primaryKey OPTIONAL Name of primary key column.
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* @return string
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* @throws ZendX_Db_Adapter_Firebird_Exception
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*/
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public function lastInsertId($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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$sequenceName .= "_$primaryKey";
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}
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$sequenceName .= '_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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* Begin a transaction.
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*
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* @return void
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*/
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protected function _beginTransaction()
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{
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$this->_connect();
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if (is_resource($this->_transResource)){
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return;
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}
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$this->_transResource = ibase_trans(IBASE_DEFAULT, $this->_connection);
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}
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/**
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* Commit a transaction.
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*
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* @return void
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*/
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protected function _commit()
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{
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if (false === ibase_commit(is_resource($this->_transResource) ? $this->_transResource : $this->_connection)) {
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/**
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* @see ZendX_Db_Adapter_Firebird_Exception
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*/
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require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
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throw new ZendX_Db_Adapter_Firebird_Exception(ibase_errmsg());
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}
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$this->_transResource = null;
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}
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/**
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* Roll-back a transaction.
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*
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* @return void
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*/
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protected function _rollBack()
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{
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if (false === ibase_rollback(is_resource($this->_transResource) ? $this->_transResource : $this->_connection)) {
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/**
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* @see ZendX_Db_Adapter_Firebird_Exception
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*/
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require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
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throw new ZendX_Db_Adapter_Firebird_Exception(ibase_errmsg());
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}
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$this->_transResource = null;
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}
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/**
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* Set the fetch mode.
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*
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* @param int $mode
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* @return void
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*/
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public function setFetchMode($mode)
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{
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switch ($mode) {
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case Zend_Db::FETCH_LAZY:
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case Zend_Db::FETCH_ASSOC:
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case Zend_Db::FETCH_NUM:
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case Zend_Db::FETCH_BOTH:
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case Zend_Db::FETCH_NAMED:
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case Zend_Db::FETCH_OBJ:
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case Zend_Db::FETCH_BOUND: // bound to PHP variable
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$this->_fetchMode = $mode;
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break;
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default:
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/**
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* @see ZendX_Db_Adapter_Firebird_Exception
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*/
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require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
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throw new ZendX_Db_Adapter_Firebird_Exception("Invalid fetch mode '$mode' specified");
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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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/**
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* @see ZendX_Db_Adapter_Firebird_Exception
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*/
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require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
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throw new ZendX_Db_Adapter_Firebird_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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/**
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* @see ZendX_Db_Adapter_Firebird_Exception
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*/
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require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
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throw new ZendX_Db_Adapter_Firebird_Exception("LIMIT argument offset=$offset is not valid");
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}
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if (trim($sql) == ''){
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//Only compatible with FB 2.0 or newer
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//ZF 1.5.0 don't support limit sql syntax that don't only append texto to sql, fixed in 1.5.1
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$sql .= " rows $count";
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if ($offset > 0)
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$sql .= " to $offset";
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}
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else
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$sql = substr_replace($sql, "select first $count skip $offset ", stripos($sql, 'select'), 6);
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return $sql;
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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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* @param boolean $auto If true, heed the AUTO_QUOTE_IDENTIFIERS config option.
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* @return string The quoted identifier and alias.
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*/
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public function quoteTableAs($ident, $alias = null, $auto=false)
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{
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// Firebird 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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* 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. Firebird, Oracle, PostgreSQL, DB2). Other RDBMS brands return null.
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*
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* @param string $sequenceName
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* @return string
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*/
|
|
public function lastSequenceId($sequenceName)
|
|
{
|
|
$this->_connect();
|
|
$sql = 'SELECT GEN_ID('.$this->quoteIdentifier($sequenceName).', 0) FROM RDB$DATABASE';
|
|
$value = $this->fetchOne($sql);
|
|
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. Firebird, Oracle, PostgreSQL, DB2). Other RDBMS brands return null.
|
|
*
|
|
* @param string $sequenceName
|
|
* @return integer
|
|
*/
|
|
public function nextSequenceId($sequenceName)
|
|
{
|
|
$this->_connect();
|
|
$sql = 'SELECT GEN_ID('.$this->quoteIdentifier($sequenceName).', 1) FROM RDB$DATABASE';
|
|
$value = $this->fetchOne($sql);
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* Check if the adapter supports real SQL parameters.
|
|
*
|
|
* @param string $type 'positional' or 'named'
|
|
* @return bool
|
|
*/
|
|
public function supportsParameters($type)
|
|
{
|
|
switch ($type) {
|
|
case 'positional':
|
|
return true;
|
|
case 'named':
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Test if a connection is active
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public function isConnected()
|
|
{
|
|
return ((bool) (is_resource($this->_connection)
|
|
&& get_resource_type($this->_connection) == 'Firebird/InterBase link'));
|
|
}
|
|
|
|
/**
|
|
* Retrieve server version in PHP style
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getServerVersion()
|
|
{
|
|
$this->_connect();
|
|
$service = ibase_service_attach($this->_formatDbConnString($this->_config['host'], $this->_config['port'], ''), $this->_config['username'], $this->_config['password']);
|
|
|
|
if ($service != FALSE) {
|
|
$server_info = ibase_server_info($service, IBASE_SVC_SERVER_VERSION);
|
|
ibase_service_detach($service);
|
|
$matches = null;
|
|
if (preg_match('/((?:[0-9]{1,2}\.){1,3}[0-9]{1,2})/', $server_info, $matches)) {
|
|
return $matches[1];
|
|
} else {
|
|
return null;
|
|
}
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
} |