Ibm.php

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<?php
#require_once 'Zend/Db/Adapter/Pdo/Abstract.php';

#require_once 'Zend/Db/Adapter/Pdo/Ibm/Db2.php';

#require_once 'Zend/Db/Adapter/Pdo/Ibm/Ids.php';

#require_once 'Zend/Db/Statement/Pdo/Ibm.php';


class Zend_Db_Adapter_Pdo_Ibm extends Zend_Db_Adapter_Pdo_Abstract
{
    protected $_pdoType = 'ibm';

    protected $_serverType = null;

    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,
                        'INTEGER'            => Zend_Db::INT_TYPE,
                        'SMALLINT'           => Zend_Db::INT_TYPE,
                        'BIGINT'             => Zend_Db::BIGINT_TYPE,
                        'DECIMAL'            => Zend_Db::FLOAT_TYPE,
                        'DEC'                => Zend_Db::FLOAT_TYPE,
                        'REAL'               => Zend_Db::FLOAT_TYPE,
                        'NUMERIC'            => Zend_Db::FLOAT_TYPE,
                        'DOUBLE PRECISION'   => Zend_Db::FLOAT_TYPE,
                        'FLOAT'              => Zend_Db::FLOAT_TYPE
                        );

    public function _connect()
    {
        if ($this->_connection) {
            return;
        }
        parent::_connect();

        $this->getConnection()->setAttribute(Zend_Db::ATTR_STRINGIFY_FETCHES, true);

        try {
            if ($this->_serverType === null) {
                $server = substr($this->getConnection()->getAttribute(PDO::ATTR_SERVER_INFO), 0, 3);

                switch ($server) {
                    case 'DB2':
                        $this->_serverType = new Zend_Db_Adapter_Pdo_Ibm_Db2($this);

                        // Add DB2-specific numeric types
                        $this->_numericDataTypes['DECFLOAT'] = Zend_Db::FLOAT_TYPE;
                        $this->_numericDataTypes['DOUBLE']   = Zend_Db::FLOAT_TYPE;
                        $this->_numericDataTypes['NUM']      = Zend_Db::FLOAT_TYPE;

                        break;
                    case 'IDS':
                        $this->_serverType = new Zend_Db_Adapter_Pdo_Ibm_Ids($this);

                        // Add IDS-specific numeric types
                        $this->_numericDataTypes['SERIAL']       = Zend_Db::INT_TYPE;
                        $this->_numericDataTypes['SERIAL8']      = Zend_Db::BIGINT_TYPE;
                        $this->_numericDataTypes['INT8']         = Zend_Db::BIGINT_TYPE;
                        $this->_numericDataTypes['SMALLFLOAT']   = Zend_Db::FLOAT_TYPE;
                        $this->_numericDataTypes['MONEY']        = Zend_Db::FLOAT_TYPE;

                        break;
                    }
            }
        } catch (PDOException $e) {
            #require_once 'Zend/Db/Adapter/Exception.php';
            $error = strpos($e->getMessage(), 'driver does not support that attribute');
            if ($error) {
                throw new Zend_Db_Adapter_Exception("PDO_IBM driver extension is downlevel.  Please use driver release version 1.2.1 or later", 0, $e);
            } else {
                throw new Zend_Db_Adapter_Exception($e->getMessage(), $e->getCode(), $e);
            }
        }
    }

    protected function _dsn()
    {
        $this->_checkRequiredOptions($this->_config);

        // check if using full connection string
        if (array_key_exists('host', $this->_config)) {
            $dsn = ';DATABASE=' . $this->_config['dbname']
            . ';HOSTNAME=' . $this->_config['host']
            . ';PORT='     . $this->_config['port']
            // PDO_IBM supports only DB2 TCPIP protocol
            . ';PROTOCOL=' . 'TCPIP;';
        } else {
            // catalogued connection
            $dsn = $this->_config['dbname'];
        }
        return $this->_pdoType . ': ' . $dsn;
    }

    protected function _checkRequiredOptions(array $config)
    {
        parent::_checkRequiredOptions($config);

        if (array_key_exists('host', $this->_config) &&
        !array_key_exists('port', $config)) {
            #require_once 'Zend/Db/Adapter/Exception.php';
            throw new Zend_Db_Adapter_Exception("Configuration must have a key for 'port' when 'host' is specified");
        }
    }

    public function prepare($sql)
    {
        $this->_connect();
        $stmtClass = $this->_defaultStmtClass;
        $stmt = new $stmtClass($this, $sql);
        $stmt->setFetchMode($this->_fetchMode);
        return $stmt;
    }

    public function listTables()
    {
        $this->_connect();
        return $this->_serverType->listTables();
    }

    public function describeTable($tableName, $schemaName = null)
    {
        $this->_connect();
        return $this->_serverType->describeTable($tableName, $schemaName);
    }

    public function insert($table, array $bind)
    {
        $this->_connect();
        $newbind = array();
        if (is_array($bind)) {
            foreach ($bind as $name => $value) {
                if($value !== null) {
                    $newbind[$name] = $value;
                }
            }
        }

        return parent::insert($table, $newbind);
    }

    public function limit($sql, $count, $offset = 0)
    {
       $this->_connect();
       return $this->_serverType->limit($sql, $count, $offset);
    }

    public function lastInsertId($tableName = null, $primaryKey = null)
    {
        $this->_connect();

         if ($tableName !== null) {
            $sequenceName = $tableName;
            if ($primaryKey) {
                $sequenceName .= "_$primaryKey";
            }
            $sequenceName .= '_seq';
            return $this->lastSequenceId($sequenceName);
        }

        $id = $this->getConnection()->lastInsertId();

        return $id;
    }

    public function lastSequenceId($sequenceName)
    {
        $this->_connect();
        return $this->_serverType->lastSequenceId($sequenceName);
    }

    public function nextSequenceId($sequenceName)
    {
        $this->_connect();
        return $this->_serverType->nextSequenceId($sequenceName);
    }

    public function getServerVersion()
    {
        try {
            $stmt = $this->query('SELECT service_level, fixpack_num FROM TABLE (sysproc.env_get_inst_info()) as INSTANCEINFO');
            $result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
            if (count($result)) {
                $matches = null;
                if (preg_match('/((?:[0-9]{1,2}\.){1,3}[0-9]{1,2})/', $result[0][0], $matches)) {
                    return $matches[1];
                } else {
                    return null;
                }
            }
            return null;
        } catch (PDOException $e) {
            return null;
        }
    }
}