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/**
* 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 ZendX
* @package ZendX_Db
* @subpackage Adapter
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: $
*/
/**
* @see Zend_Db_Adapter_Abstract
*/
require_once 'Zend/Db/Adapter/Abstract.php';
/**
* @see Zend_Db_Profiler
*/
require_once 'Zend/Db/Profiler.php';
/**
* @see Zend_Db_Select
*/
require_once 'Zend/Db/Select.php';
/**
* @see Zend_Db_Statement_Firebird
*/
require_once 'ZendX/Db/Statement/Firebird.php';
/**
* @category ZendX
* @package ZendX_Db
* @subpackage Adapter
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class ZendX_Db_Adapter_Firebird extends Zend_Db_Adapter_Abstract
{
/**
* Specifies whether the adapter automatically quotes identifiers.
* If true, most SQL generated by Zend_Db classes applies
* identifier quoting automatically.
* If false, developer must quote identifiers themselves
* by calling quoteIdentifier().
*
* @var bool
*/
protected $_autoQuoteIdentifiers = true;
/**
* The transaction resource.
*
* @var transaction
*/
protected $_transResource = null;
/**
* Return the status of current transaction.
* @return bool
*/
public function getTransaction()
{
return (is_resource($this->_transResource) ? $this->_transResource : null);
}
/**
* 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,
'SMALLINT' => Zend_Db::INT_TYPE,
'INT' => Zend_Db::INT_TYPE,
'INTEGER' => Zend_Db::INT_TYPE,
'BIGINT' => Zend_Db::BIGINT_TYPE,
'INT64' => Zend_Db::BIGINT_TYPE,
'DECIMAL' => Zend_Db::FLOAT_TYPE,
'DOUBLE PRECISION' => Zend_Db::FLOAT_TYPE,
'DOUBLE' => Zend_Db::FLOAT_TYPE,
'NUMERIC' => Zend_Db::FLOAT_TYPE,
'FLOAT' => Zend_Db::FLOAT_TYPE
);
/**
* Quote a raw string.
*
* @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 "'" . $value . "'";
}
/**
* Returns a list of the tables in the database.
*
* @return array
*/
public function listTables()
{
$data = $this->fetchCol('SELECT RDB$RELATION_NAME FROM RDB$RELATIONS WHERE RDB$SYSTEM_FLAG = 0');
foreach($data as &$v)
$v = trim($v);
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 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
* IDENTITY => integer; true if column is auto-generated with unique values
*
* @param string $tableName
* @param string $schemaName OPTIONAL
* @return array
*/
public function describeTable($tableName, $schemaName = null)
{
$fieldMaps = array(
'TEXT' => 'CHAR',
'VARYING' => 'VARCHAR',
'SHORT' => 'SMALLINT',
'LONG' => 'INTEGER',
'FLOAT' => 'FLOAT',
'INT64' => array(0 => 'BIGINT', 'NUMERIC', 'DECIMAL'),
'DATE' => 'DATE',
'TIME' => 'TIME',
'BLOB' => 'BLOB',
'DOUBLE' => 'DOUBLE PRECISION',
'TIMESTAMP' => 'TIMESTAMP'
);
$sql = 'select
RF.RDB$RELATION_NAME, \'\', RF.RDB$FIELD_NAME, T.RDB$TYPE_NAME,
RF.RDB$DEFAULT_VALUE, RF.RDB$NULL_FLAG, RF.RDB$FIELD_POSITION,
F.RDB$CHARACTER_LENGTH, F.RDB$FIELD_SCALE, F.RDB$FIELD_PRECISION,
IXS.RDB$FIELD_POSITION, IXS.RDB$FIELD_POSITION, F.RDB$FIELD_SUB_TYPE
from RDB$RELATION_FIELDS RF
left join RDB$RELATION_CONSTRAINTS RC
on (RF.RDB$RELATION_NAME = RC.RDB$RELATION_NAME and RC.RDB$CONSTRAINT_TYPE = \'PRIMARY KEY\')
left join RDB$INDEX_SEGMENTS IXS
on (IXS.RDB$FIELD_NAME = RF.RDB$FIELD_NAME and RC.RDB$INDEX_NAME = IXS.RDB$INDEX_NAME)
inner join RDB$FIELDS F on (RF.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME)
inner join RDB$TYPES T on (T.RDB$TYPE = F.RDB$FIELD_TYPE and T.RDB$FIELD_NAME = \'RDB$FIELD_TYPE\')
where ' . $this->quoteInto('(UPPER(RF.RDB$RELATION_NAME) = UPPER(?)) ', $tableName) . '
order by RF.RDB$FIELD_POSITION';
$stmt = $this->query($sql);
/**
* 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;
$sub_type = 12;
$desc = array();
foreach ($result as $key => $row) {
list ($primary, $primaryPosition, $identity) = array(false, null, false);
if (strlen($row[$constraint_type])) {
$primary = true;
$primaryPosition = $row[$position];
/**
* Firebird does not support auto-increment keys.
*/
$identity = false;
}
$dataType = trim($row[$data_type]);
$newType = $fieldMaps[$dataType];
if (is_array($newType) && $dataType == 'INT64')
$newType = $newType[$row[$sub_type]];
$row[$data_type] = $newType;
$desc[trim($row[$column_name])] = array(
'SCHEMA_NAME' => '',
'TABLE_NAME' => trim($row[$table_name]),
'COLUMN_NAME' => trim($row[$column_name]),
'COLUMN_POSITION' => $row[$column_id] +1,
'DATA_TYPE' => $row[$data_type],
'DEFAULT' => $row[$data_default],
'NULLABLE' => (bool) ($row[$nullable] != '1'),
'LENGTH' => $row[$data_length],
'SCALE' => ($row[$data_scale] == 0 ? null : $row[$data_scale]),
'PRECISION' => ($row[$data_precision] == 0 ? null : $row[$data_precision]),
'UNSIGNED' => false,
'PRIMARY' => $primary,
'PRIMARY_POSITION' => ($primary ? $primaryPosition+1 : null),
'IDENTITY' => $identity
);
}
return $desc;
}
/**
* Format a connection string to connect to database
*
* @param string $host
* @param int $port
* @param string $dbname
* @return string
*/
protected function _formatDbConnString($host, $port, $dbname)
{
if (is_numeric($port))
$port = '/' . (integer) $port;
if ($dbname)
$dbname = ':' . $dbname;
return $host . $port . $dbname;
}
/**
* Creates a connection to the database.
*
* @return void
* @throws ZendX_Db_Adapter_Firebird_Exception
*/
protected function _connect()
{
if (isset($this->_connection) && is_resource($this->_connection)) {
return;
}
if (!extension_loaded('interbase')) {
/**
* @see ZendX_Db_Adapter_Firebird_Exception
*/
require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
throw new ZendX_Db_Adapter_Firebird_Exception('The Interbase extension is required for this adapter but the extension is not loaded');
}
// Suppress connection warnings here.
// Throw an exception instead.
$this->_connection = @ibase_connect(
$this->_formatDbConnString($this->_config['host'],$this->_config['port'] ,$this->_config['dbname']),
$this->_config['username'],
$this->_config['password'],
$this->_config['charset'],
$this->_config['buffers'],
$this->_config['dialect'],
$this->_config['role']
);
if ($this->_connection === false) {
/**
* @see ZendX_Db_Adapter_Firebird_Exception
*/
require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
throw new ZendX_Db_Adapter_Firebird_Exception(ibase_errmsg());
}
}
/**
* Force the connection to close.
*
* @return void
*/
public function closeConnection()
{
if (is_resource($this->_transResource)) {
ibase_rollback($this->_transResource);
}
$this->_transResource = null;
if (is_resource($this->_connection)) {
unset($this->_connection);
}
//$this->_connection = false;
}
/**
* Prepare a statement and return a Statement resource.
*
* @param string $sql SQL query
* @return ZendX_Db_Statement_Firebird
*/
public function prepare($sql)
{
$this->_connect();
$stmt = new ZendX_Db_Statement_Firebird($this, $sql);
if ($stmt === false) {
return false;
}
$stmt->setFetchMode($this->_fetchMode);
return $stmt;
}
/**
* Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column.
*
* As a convention, on RDBMS brands that support sequences
* (e.g. Firebird, 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.
*
* Firebird 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 $primaryKey OPTIONAL Name of primary key column.
* @return string
* @throws ZendX_Db_Adapter_Firebird_Exception
*/
public function lastInsertId($tableName = null, $primaryKey = null)
{
if ($tableName !== null) {
$sequenceName = $tableName;
if ($primaryKey) {
$sequenceName .= "_$primaryKey";
}
$sequenceName .= '_seq';
return $this->lastSequenceId($sequenceName);
}
// No support for IDENTITY columns; return null
return null;
}
/**
* Begin a transaction.
*
* @return void
*/
protected function _beginTransaction()
{
$this->_connect();
if (is_resource($this->_transResource)){
return;
}
$this->_transResource = ibase_trans(IBASE_DEFAULT, $this->_connection);
}
/**
* Commit a transaction.
*
* @throws ZendX_Db_Adapter_Firebird_Exception
* @return void
*/
protected function _commit()
{
if (false === ibase_commit(is_resource($this->_transResource) ? $this->_transResource : $this->_connection)) {
/**
* @see ZendX_Db_Adapter_Firebird_Exception
*/
require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
throw new ZendX_Db_Adapter_Firebird_Exception(ibase_errmsg());
}
$this->_transResource = null;
}
/**
* Roll-back a transaction.
*
* @throws ZendX_Db_Adapter_Firebird_Exception
* @return void
*/
protected function _rollBack()
{
if (false === ibase_rollback(is_resource($this->_transResource) ? $this->_transResource : $this->_connection)) {
/**
* @see ZendX_Db_Adapter_Firebird_Exception
*/
require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
throw new ZendX_Db_Adapter_Firebird_Exception(ibase_errmsg());
}
$this->_transResource = null;
}
/**
* Set the fetch mode.
*
* @param int $mode
* @throws ZendX_Db_Adapter_Firebird_Exception
* @return void
*/
public function setFetchMode($mode)
{
switch ($mode) {
case Zend_Db::FETCH_LAZY:
case Zend_Db::FETCH_ASSOC:
case Zend_Db::FETCH_NUM:
case Zend_Db::FETCH_BOTH:
case Zend_Db::FETCH_NAMED:
case Zend_Db::FETCH_OBJ:
case Zend_Db::FETCH_BOUND: // bound to PHP variable
$this->_fetchMode = $mode;
break;
default:
/**
* @see ZendX_Db_Adapter_Firebird_Exception
*/
require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
throw new ZendX_Db_Adapter_Firebird_Exception("Invalid fetch mode '$mode' specified");
}
}
/**
* 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 ($count <= 0) {
/**
* @see ZendX_Db_Adapter_Firebird_Exception
*/
require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
throw new ZendX_Db_Adapter_Firebird_Exception("LIMIT argument count=$count is not valid");
}
$offset = intval($offset);
if ($offset < 0) {
/**
* @see ZendX_Db_Adapter_Firebird_Exception
*/
require_once 'ZendX/Db/Adapter/Firebird/Exception.php';
throw new ZendX_Db_Adapter_Firebird_Exception("LIMIT argument offset=$offset is not valid");
}
if (trim($sql) == ''){
//Only compatible with FB 2.0 or newer
//ZF 1.5.0 don't support limit sql syntax that don't only append texto to sql, fixed in 1.5.1
$sql .= " rows $count";
if ($offset > 0)
$sql .= " to $offset";
}
else
$sql = substr_replace($sql, "select first $count skip $offset ", stripos($sql, 'select'), 6);
return $sql;
}
/**
* 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.
* @param boolean $auto If true, heed the AUTO_QUOTE_IDENTIFIERS config option.
* @return string The quoted identifier and alias.
*/
public function quoteTableAs($ident, $alias = null, $auto=false)
{
// Firebird doesn't allow the 'AS' keyword between the table identifier/expression and alias.
return $this->_quoteIdentifierAs($ident, $alias, $auto, ' ');
}
/**
* Return the most recent value from the specified sequence in the database.
* This is supported only on RDBMS brands that support sequences
* (e.g. Firebird, Oracle, PostgreSQL, DB2). Other RDBMS brands return null.
*
* @param string $sequenceName
* @return string
*/
public function lastSequenceId($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;
}
}
}
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