web/lib/Zend/Db/Adapter/Pdo/Ibm.php
changeset 64 162c1de6545a
parent 19 1c2f13fd785c
child 68 ecaf28ffe26e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Db/Adapter/Pdo/Ibm.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,360 @@
+<?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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Ibm.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+
+/** @see Zend_Db_Adapter_Pdo_Abstract */
+require_once 'Zend/Db/Adapter/Pdo/Abstract.php';
+
+/** @see Zend_Db_Abstract_Pdo_Ibm_Db2 */
+require_once 'Zend/Db/Adapter/Pdo/Ibm/Db2.php';
+
+/** @see Zend_Db_Abstract_Pdo_Ibm_Ids */
+require_once 'Zend/Db/Adapter/Pdo/Ibm/Ids.php';
+
+/** @see Zend_Db_Statement_Pdo_Ibm */
+require_once 'Zend/Db/Statement/Pdo/Ibm.php';
+
+
+/**
+ * @category   Zend
+ * @package    Zend_Db
+ * @subpackage Adapter
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Db_Adapter_Pdo_Ibm extends Zend_Db_Adapter_Pdo_Abstract
+{
+    /**
+     * PDO type.
+     *
+     * @var string
+     */
+    protected $_pdoType = 'ibm';
+
+    /**
+     * The IBM data server connected to
+     *
+     * @var string
+     */
+    protected $_serverType = 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 $_numericDataTypes = array(
+                        Zend_Db::INT_TYPE    => Zend_Db::INT_TYPE,
+                        Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
+                        Zend_Db::FLOAT_TYPE  => Zend_Db::FLOAT_TYPE,
+                        'INTEGER'            => Zend_Db::INT_TYPE,
+                        'SMALLINT'           => Zend_Db::INT_TYPE,
+                        'BIGINT'             => Zend_Db::BIGINT_TYPE,
+                        'DECIMAL'            => Zend_Db::FLOAT_TYPE,
+                        'DEC'                => Zend_Db::FLOAT_TYPE,
+                        'REAL'               => Zend_Db::FLOAT_TYPE,
+                        'NUMERIC'            => Zend_Db::FLOAT_TYPE,
+                        'DOUBLE PRECISION'   => Zend_Db::FLOAT_TYPE,
+                        'FLOAT'              => Zend_Db::FLOAT_TYPE
+                        );
+
+    /**
+     * Creates a PDO object and connects to the database.
+     *
+     * The IBM data server is set.
+     * Current options are DB2 or IDS
+     * @todo also differentiate between z/OS and i/5
+     *
+     * @return void
+     * @throws Zend_Db_Adapter_Exception
+     */
+    public function _connect()
+    {
+        if ($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) {
+            /** @see Zend_Db_Adapter_Exception */
+            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);
+            }
+        }
+    }
+
+    /**
+     * Creates a PDO DSN for the adapter from $this->_config settings.
+     *
+     * @return string
+     */
+    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;
+    }
+
+    /**
+     * Checks required options
+     *
+     * @param  array $config
+     * @throws Zend_Db_Adapter_Exception
+     * @return void
+     */
+    protected function _checkRequiredOptions(array $config)
+    {
+        parent::_checkRequiredOptions($config);
+
+        if (array_key_exists('host', $this->_config) &&
+        !array_key_exists('port', $config)) {
+            /** @see Zend_Db_Adapter_Exception */
+            require_once 'Zend/Db/Adapter/Exception.php';
+            throw new Zend_Db_Adapter_Exception("Configuration must have a key for 'port' when 'host' is specified");
+        }
+    }
+
+    /**
+     * Prepares an SQL statement.
+     *
+     * @param string $sql The SQL statement with placeholders.
+     * @param array $bind An array of data to bind to the placeholders.
+     * @return PDOStatement
+     */
+    public function prepare($sql)
+    {
+        $this->_connect();
+        $stmtClass = $this->_defaultStmtClass;
+        $stmt = new $stmtClass($this, $sql);
+        $stmt->setFetchMode($this->_fetchMode);
+        return $stmt;
+    }
+
+    /**
+     * Returns a list of the tables in the database.
+     *
+     * @return array
+     */
+    public function listTables()
+    {
+        $this->_connect();
+        return $this->_serverType->listTables();
+    }
+
+    /**
+     * 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
+     *
+     * @todo Discover integer unsigned property.
+     *
+     * @param string $tableName
+     * @param string $schemaName OPTIONAL
+     * @return array
+     */
+    public function describeTable($tableName, $schemaName = null)
+    {
+        $this->_connect();
+        return $this->_serverType->describeTable($tableName, $schemaName);
+    }
+
+    /**
+     * Inserts a table row with specified data.
+     * Special handling for PDO_IBM
+     * remove empty slots
+     *
+     * @param mixed $table The table to insert data into.
+     * @param array $bind Column-value pairs.
+     * @return int The number of affected rows.
+     */
+    public function insert($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);
+    }
+
+    /**
+     * Adds an adapter-specific LIMIT clause to the SELECT statement.
+     *
+     * @param string $sql
+     * @param integer $count
+     * @param integer $offset OPTIONAL
+     * @return string
+     */
+    public function limit($sql, $count, $offset = 0)
+    {
+       $this->_connect();
+       return $this->_serverType->limit($sql, $count, $offset);
+    }
+
+    /**
+     * Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT
+     * column.
+     *
+     * @param string $tableName OPTIONAL
+     * @param string $primaryKey OPTIONAL
+     * @return integer
+     */
+    public function lastInsertId($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;
+    }
+
+    /**
+     * Return the most recent value from the specified sequence in the database.
+     *
+     * @param string $sequenceName
+     * @return integer
+     */
+    public function lastSequenceId($sequenceName)
+    {
+        $this->_connect();
+        return $this->_serverType->lastSequenceId($sequenceName);
+    }
+
+    /**
+     * Generate a new value from the specified sequence in the database,
+     * and return it.
+     *
+     * @param string $sequenceName
+     * @return integer
+     */
+    public function nextSequenceId($sequenceName)
+    {
+        $this->_connect();
+        return $this->_serverType->nextSequenceId($sequenceName);
+    }
+
+    /**
+     * Retrieve server version in PHP style
+     * Pdo_Idm doesn't support getAttribute(PDO::ATTR_SERVER_VERSION)
+     * @return string
+     */
+    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;
+        }
+    }
+}