--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Db/Adapter/Db2.php Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,840 @@
+<?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: Db2.php 23199 2010-10-21 14:27:06Z ralph $
+ *
+ */
+
+/**
+ * @see Zend_Db
+ */
+require_once 'Zend/Db.php';
+
+/**
+ * @see Zend_Db_Adapter_Abstract
+ */
+require_once 'Zend/Db/Adapter/Abstract.php';
+
+/**
+ * @see Zend_Db_Statement_Db2
+ */
+require_once 'Zend/Db/Statement/Db2.php';
+
+
+/**
+ * @package Zend_Db
+ * @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_Db2 extends Zend_Db_Adapter_Abstract
+{
+ /**
+ * User-provided configuration.
+ *
+ * Basic keys are:
+ *
+ * username => (string) Connect to the database as this username.
+ * password => (string) Password associated with the username.
+ * host => (string) What host to connect to (default 127.0.0.1)
+ * dbname => (string) The name of the database to user
+ * protocol => (string) Protocol to use, defaults to "TCPIP"
+ * port => (integer) Port number to use for TCP/IP if protocol is "TCPIP"
+ * persistent => (boolean) Set TRUE to use a persistent connection (db2_pconnect)
+ * os => (string) This should be set to 'i5' if the db is on an os400/i5
+ * schema => (string) The default schema the connection should use
+ *
+ * @var array
+ */
+ protected $_config = array(
+ 'dbname' => null,
+ 'username' => null,
+ 'password' => null,
+ 'host' => 'localhost',
+ 'port' => '50000',
+ 'protocol' => 'TCPIP',
+ 'persistent' => false,
+ 'os' => null,
+ 'schema' => null
+ );
+
+ /**
+ * Execution mode
+ *
+ * @var int execution flag (DB2_AUTOCOMMIT_ON or DB2_AUTOCOMMIT_OFF)
+ */
+ protected $_execute_mode = DB2_AUTOCOMMIT_ON;
+
+ /**
+ * Default class name for a DB statement.
+ *
+ * @var string
+ */
+ protected $_defaultStmtClass = 'Zend_Db_Statement_Db2';
+ protected $_isI5 = false;
+
+ /**
+ * 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 $_numericDataTypes = array(
+ Zend_Db::INT_TYPE => Zend_Db::INT_TYPE,
+ Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
+ Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE,
+ 'INTEGER' => Zend_Db::INT_TYPE,
+ 'SMALLINT' => Zend_Db::INT_TYPE,
+ 'BIGINT' => Zend_Db::BIGINT_TYPE,
+ 'DECIMAL' => Zend_Db::FLOAT_TYPE,
+ 'NUMERIC' => Zend_Db::FLOAT_TYPE
+ );
+
+ /**
+ * Creates a connection resource.
+ *
+ * @return void
+ */
+ protected function _connect()
+ {
+ if (is_resource($this->_connection)) {
+ // connection already exists
+ return;
+ }
+
+ if (!extension_loaded('ibm_db2')) {
+ /**
+ * @see Zend_Db_Adapter_Db2_Exception
+ */
+ require_once 'Zend/Db/Adapter/Db2/Exception.php';
+ throw new Zend_Db_Adapter_Db2_Exception('The IBM DB2 extension is required for this adapter but the extension is not loaded');
+ }
+
+ $this->_determineI5();
+ if ($this->_config['persistent']) {
+ // use persistent connection
+ $conn_func_name = 'db2_pconnect';
+ } else {
+ // use "normal" connection
+ $conn_func_name = 'db2_connect';
+ }
+
+ if (!isset($this->_config['driver_options']['autocommit'])) {
+ // set execution mode
+ $this->_config['driver_options']['autocommit'] = &$this->_execute_mode;
+ }
+
+ if (isset($this->_config['options'][Zend_Db::CASE_FOLDING])) {
+ $caseAttrMap = array(
+ Zend_Db::CASE_NATURAL => DB2_CASE_NATURAL,
+ Zend_Db::CASE_UPPER => DB2_CASE_UPPER,
+ Zend_Db::CASE_LOWER => DB2_CASE_LOWER
+ );
+ $this->_config['driver_options']['DB2_ATTR_CASE'] = $caseAttrMap[$this->_config['options'][Zend_Db::CASE_FOLDING]];
+ }
+
+ if ($this->_isI5 && isset($this->_config['driver_options']['i5_naming'])) {
+ if ($this->_config['driver_options']['i5_naming']) {
+ $this->_config['driver_options']['i5_naming'] = DB2_I5_NAMING_ON;
+ } else {
+ $this->_config['driver_options']['i5_naming'] = DB2_I5_NAMING_OFF;
+ }
+ }
+
+ if ($this->_config['host'] !== 'localhost' && !$this->_isI5) {
+ // if the host isn't localhost, use extended connection params
+ $dbname = 'DRIVER={IBM DB2 ODBC DRIVER}' .
+ ';DATABASE=' . $this->_config['dbname'] .
+ ';HOSTNAME=' . $this->_config['host'] .
+ ';PORT=' . $this->_config['port'] .
+ ';PROTOCOL=' . $this->_config['protocol'] .
+ ';UID=' . $this->_config['username'] .
+ ';PWD=' . $this->_config['password'] .';';
+ $this->_connection = $conn_func_name(
+ $dbname,
+ null,
+ null,
+ $this->_config['driver_options']
+ );
+ } else {
+ // host is localhost, so use standard connection params
+ $this->_connection = $conn_func_name(
+ $this->_config['dbname'],
+ $this->_config['username'],
+ $this->_config['password'],
+ $this->_config['driver_options']
+ );
+ }
+
+ // check the connection
+ if (!$this->_connection) {
+ /**
+ * @see Zend_Db_Adapter_Db2_Exception
+ */
+ require_once 'Zend/Db/Adapter/Db2/Exception.php';
+ throw new Zend_Db_Adapter_Db2_Exception(db2_conn_errormsg(), db2_conn_error());
+ }
+ }
+
+ /**
+ * Test if a connection is active
+ *
+ * @return boolean
+ */
+ public function isConnected()
+ {
+ return ((bool) (is_resource($this->_connection)
+ && get_resource_type($this->_connection) == 'DB2 Connection'));
+ }
+
+ /**
+ * Force the connection to close.
+ *
+ * @return void
+ */
+ public function closeConnection()
+ {
+ if ($this->isConnected()) {
+ db2_close($this->_connection);
+ }
+ $this->_connection = null;
+ }
+
+ /**
+ * Returns an SQL statement for preparation.
+ *
+ * @param string $sql The SQL statement with placeholders.
+ * @return Zend_Db_Statement_Db2
+ */
+ public function prepare($sql)
+ {
+ $this->_connect();
+ $stmtClass = $this->_defaultStmtClass;
+ if (!class_exists($stmtClass)) {
+ require_once 'Zend/Loader.php';
+ Zend_Loader::loadClass($stmtClass);
+ }
+ $stmt = new $stmtClass($this, $sql);
+ $stmt->setFetchMode($this->_fetchMode);
+ return $stmt;
+ }
+
+ /**
+ * Gets the execution mode
+ *
+ * @return int the execution mode (DB2_AUTOCOMMIT_ON or DB2_AUTOCOMMIT_OFF)
+ */
+ public function _getExecuteMode()
+ {
+ return $this->_execute_mode;
+ }
+
+ /**
+ * @param integer $mode
+ * @return void
+ */
+ public function _setExecuteMode($mode)
+ {
+ switch ($mode) {
+ case DB2_AUTOCOMMIT_OFF:
+ case DB2_AUTOCOMMIT_ON:
+ $this->_execute_mode = $mode;
+ db2_autocommit($this->_connection, $mode);
+ break;
+ default:
+ /**
+ * @see Zend_Db_Adapter_Db2_Exception
+ */
+ require_once 'Zend/Db/Adapter/Db2/Exception.php';
+ throw new Zend_Db_Adapter_Db2_Exception("execution mode not supported");
+ break;
+ }
+ }
+
+ /**
+ * 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 $value;
+ }
+ /**
+ * Use db2_escape_string() if it is present in the IBM DB2 extension.
+ * But some supported versions of PHP do not include this function,
+ * so fall back to default quoting in the parent class.
+ */
+ if (function_exists('db2_escape_string')) {
+ return "'" . db2_escape_string($value) . "'";
+ }
+ return parent::_quote($value);
+ }
+
+ /**
+ * @return string
+ */
+ public function getQuoteIdentifierSymbol()
+ {
+ $this->_connect();
+ $info = db2_server_info($this->_connection);
+ if ($info) {
+ $identQuote = $info->IDENTIFIER_QUOTE_CHAR;
+ } else {
+ // db2_server_info() does not return result on some i5 OS version
+ if ($this->_isI5) {
+ $identQuote ="'";
+ }
+ }
+ return $identQuote;
+ }
+
+ /**
+ * Returns a list of the tables in the database.
+ * @param string $schema OPTIONAL
+ * @return array
+ */
+ public function listTables($schema = null)
+ {
+ $this->_connect();
+
+ if ($schema === null && $this->_config['schema'] != null) {
+ $schema = $this->_config['schema'];
+ }
+
+ $tables = array();
+
+ if (!$this->_isI5) {
+ if ($schema) {
+ $stmt = db2_tables($this->_connection, null, $schema);
+ } else {
+ $stmt = db2_tables($this->_connection);
+ }
+ while ($row = db2_fetch_assoc($stmt)) {
+ $tables[] = $row['TABLE_NAME'];
+ }
+ } else {
+ $tables = $this->_i5listTables($schema);
+ }
+
+ return $tables;
+ }
+
+
+ /**
+ * 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
+ * DB2 not supports UNSIGNED integer.
+ * 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)
+ {
+ // Ensure the connection is made so that _isI5 is set
+ $this->_connect();
+
+ if ($schemaName === null && $this->_config['schema'] != null) {
+ $schemaName = $this->_config['schema'];
+ }
+
+ if (!$this->_isI5) {
+
+ $sql = "SELECT DISTINCT c.tabschema, c.tabname, c.colname, c.colno,
+ c.typename, c.default, c.nulls, c.length, c.scale,
+ c.identity, tc.type AS tabconsttype, k.colseq
+ FROM syscat.columns c
+ LEFT JOIN (syscat.keycoluse k JOIN syscat.tabconst tc
+ ON (k.tabschema = tc.tabschema
+ AND k.tabname = tc.tabname
+ AND tc.type = 'P'))
+ ON (c.tabschema = k.tabschema
+ AND c.tabname = k.tabname
+ AND c.colname = k.colname)
+ WHERE "
+ . $this->quoteInto('UPPER(c.tabname) = UPPER(?)', $tableName);
+
+ if ($schemaName) {
+ $sql .= $this->quoteInto(' AND UPPER(c.tabschema) = UPPER(?)', $schemaName);
+ }
+
+ $sql .= " ORDER BY c.colno";
+
+ } else {
+
+ // DB2 On I5 specific query
+ $sql = "SELECT DISTINCT C.TABLE_SCHEMA, C.TABLE_NAME, C.COLUMN_NAME, C.ORDINAL_POSITION,
+ C.DATA_TYPE, C.COLUMN_DEFAULT, C.NULLS ,C.LENGTH, C.SCALE, LEFT(C.IDENTITY,1),
+ LEFT(tc.TYPE, 1) AS tabconsttype, k.COLSEQ
+ FROM QSYS2.SYSCOLUMNS C
+ LEFT JOIN (QSYS2.syskeycst k JOIN QSYS2.SYSCST tc
+ ON (k.TABLE_SCHEMA = tc.TABLE_SCHEMA
+ AND k.TABLE_NAME = tc.TABLE_NAME
+ AND LEFT(tc.type,1) = 'P'))
+ ON (C.TABLE_SCHEMA = k.TABLE_SCHEMA
+ AND C.TABLE_NAME = k.TABLE_NAME
+ AND C.COLUMN_NAME = k.COLUMN_NAME)
+ WHERE "
+ . $this->quoteInto('UPPER(C.TABLE_NAME) = UPPER(?)', $tableName);
+
+ if ($schemaName) {
+ $sql .= $this->quoteInto(' AND UPPER(C.TABLE_SCHEMA) = UPPER(?)', $schemaName);
+ }
+
+ $sql .= " ORDER BY C.ORDINAL_POSITION FOR FETCH ONLY";
+ }
+
+ $desc = array();
+ $stmt = $this->query($sql);
+
+ /**
+ * To avoid case issues, fetch using FETCH_NUM
+ */
+ $result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
+
+ /**
+ * The ordering of columns is defined by the query so we can map
+ * to variables to improve readability
+ */
+ $tabschema = 0;
+ $tabname = 1;
+ $colname = 2;
+ $colno = 3;
+ $typename = 4;
+ $default = 5;
+ $nulls = 6;
+ $length = 7;
+ $scale = 8;
+ $identityCol = 9;
+ $tabconstType = 10;
+ $colseq = 11;
+
+ foreach ($result as $key => $row) {
+ list ($primary, $primaryPosition, $identity) = array(false, null, false);
+ if ($row[$tabconstType] == 'P') {
+ $primary = true;
+ $primaryPosition = $row[$colseq];
+ }
+ /**
+ * In IBM DB2, an column can be IDENTITY
+ * even if it is not part of the PRIMARY KEY.
+ */
+ if ($row[$identityCol] == 'Y') {
+ $identity = true;
+ }
+
+ // only colname needs to be case adjusted
+ $desc[$this->foldCase($row[$colname])] = array(
+ 'SCHEMA_NAME' => $this->foldCase($row[$tabschema]),
+ 'TABLE_NAME' => $this->foldCase($row[$tabname]),
+ 'COLUMN_NAME' => $this->foldCase($row[$colname]),
+ 'COLUMN_POSITION' => (!$this->_isI5) ? $row[$colno]+1 : $row[$colno],
+ 'DATA_TYPE' => $row[$typename],
+ 'DEFAULT' => $row[$default],
+ 'NULLABLE' => (bool) ($row[$nulls] == 'Y'),
+ 'LENGTH' => $row[$length],
+ 'SCALE' => $row[$scale],
+ 'PRECISION' => ($row[$typename] == 'DECIMAL' ? $row[$length] : 0),
+ 'UNSIGNED' => false,
+ '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 $sequenceName
+ * @return string
+ */
+ public function lastSequenceId($sequenceName)
+ {
+ $this->_connect();
+
+ if (!$this->_isI5) {
+ $quotedSequenceName = $this->quoteIdentifier($sequenceName, true);
+ $sql = 'SELECT PREVVAL FOR ' . $quotedSequenceName . ' AS VAL FROM SYSIBM.SYSDUMMY1';
+ } else {
+ $quotedSequenceName = $sequenceName;
+ $sql = 'SELECT PREVVAL FOR ' . $this->quoteIdentifier($sequenceName, true) . ' AS VAL FROM QSYS2.QSQPTABL';
+ }
+
+ $value = $this->fetchOne($sql);
+ return (string) $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 $sequenceName
+ * @return string
+ */
+ public function nextSequenceId($sequenceName)
+ {
+ $this->_connect();
+ $sql = 'SELECT NEXTVAL FOR '.$this->quoteIdentifier($sequenceName, true).' AS VAL FROM SYSIBM.SYSDUMMY1';
+ $value = $this->fetchOne($sql);
+ return (string) $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.
+ *
+ * The IDENTITY_VAL_LOCAL() function gives the last generated identity value
+ * in the current process, even if it was for a GENERATED column.
+ *
+ * @param string $tableName OPTIONAL
+ * @param string $primaryKey OPTIONAL
+ * @param string $idType OPTIONAL used for i5 platform to define sequence/idenity unique value
+ * @return string
+ */
+
+ public function lastInsertId($tableName = null, $primaryKey = null, $idType = null)
+ {
+ $this->_connect();
+
+ if ($this->_isI5) {
+ return (string) $this->_i5LastInsertId($tableName, $idType);
+ }
+
+ if ($tableName !== null) {
+ $sequenceName = $tableName;
+ if ($primaryKey) {
+ $sequenceName .= "_$primaryKey";
+ }
+ $sequenceName .= '_seq';
+ return $this->lastSequenceId($sequenceName);
+ }
+
+ $sql = 'SELECT IDENTITY_VAL_LOCAL() AS VAL FROM SYSIBM.SYSDUMMY1';
+ $value = $this->fetchOne($sql);
+ return (string) $value;
+ }
+
+ /**
+ * Begin a transaction.
+ *
+ * @return void
+ */
+ protected function _beginTransaction()
+ {
+ $this->_setExecuteMode(DB2_AUTOCOMMIT_OFF);
+ }
+
+ /**
+ * Commit a transaction.
+ *
+ * @return void
+ */
+ protected function _commit()
+ {
+ if (!db2_commit($this->_connection)) {
+ /**
+ * @see Zend_Db_Adapter_Db2_Exception
+ */
+ require_once 'Zend/Db/Adapter/Db2/Exception.php';
+ throw new Zend_Db_Adapter_Db2_Exception(
+ db2_conn_errormsg($this->_connection),
+ db2_conn_error($this->_connection));
+ }
+
+ $this->_setExecuteMode(DB2_AUTOCOMMIT_ON);
+ }
+
+ /**
+ * Rollback a transaction.
+ *
+ * @return void
+ */
+ protected function _rollBack()
+ {
+ if (!db2_rollback($this->_connection)) {
+ /**
+ * @see Zend_Db_Adapter_Db2_Exception
+ */
+ require_once 'Zend/Db/Adapter/Db2/Exception.php';
+ throw new Zend_Db_Adapter_Db2_Exception(
+ db2_conn_errormsg($this->_connection),
+ db2_conn_error($this->_connection));
+ }
+ $this->_setExecuteMode(DB2_AUTOCOMMIT_ON);
+ }
+
+ /**
+ * Set the fetch mode.
+ *
+ * @param integer $mode
+ * @return void
+ * @throws Zend_Db_Adapter_Db2_Exception
+ */
+ public function setFetchMode($mode)
+ {
+ switch ($mode) {
+ case Zend_Db::FETCH_NUM: // seq array
+ case Zend_Db::FETCH_ASSOC: // assoc array
+ case Zend_Db::FETCH_BOTH: // seq+assoc array
+ case Zend_Db::FETCH_OBJ: // object
+ $this->_fetchMode = $mode;
+ break;
+ case Zend_Db::FETCH_BOUND: // bound to PHP variable
+ /**
+ * @see Zend_Db_Adapter_Db2_Exception
+ */
+ require_once 'Zend/Db/Adapter/Db2/Exception.php';
+ throw new Zend_Db_Adapter_Db2_Exception('FETCH_BOUND is not supported yet');
+ break;
+ default:
+ /**
+ * @see Zend_Db_Adapter_Db2_Exception
+ */
+ require_once 'Zend/Db/Adapter/Db2/Exception.php';
+ throw new Zend_Db_Adapter_Db2_Exception("Invalid fetch mode '$mode' specified");
+ break;
+ }
+ }
+
+ /**
+ * 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)
+ {
+ $count = intval($count);
+ if ($count <= 0) {
+ /**
+ * @see Zend_Db_Adapter_Db2_Exception
+ */
+ require_once 'Zend/Db/Adapter/Db2/Exception.php';
+ throw new Zend_Db_Adapter_Db2_Exception("LIMIT argument count=$count is not valid");
+ }
+
+ $offset = intval($offset);
+ if ($offset < 0) {
+ /**
+ * @see Zend_Db_Adapter_Db2_Exception
+ */
+ require_once 'Zend/Db/Adapter/Db2/Exception.php';
+ throw new Zend_Db_Adapter_Db2_Exception("LIMIT argument offset=$offset is not valid");
+ }
+
+ if ($offset == 0) {
+ $limit_sql = $sql . " FETCH FIRST $count ROWS ONLY";
+ return $limit_sql;
+ }
+
+ /**
+ * DB2 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 ROW_NUMBER() OVER() AS \"ZEND_DB_ROWNUM\", z1.*
+ FROM (
+ " . $sql . "
+ ) z1
+ ) z2
+ WHERE z2.zend_db_rownum BETWEEN " . ($offset+1) . " AND " . ($offset+$count);
+ return $limit_sql;
+ }
+
+ /**
+ * Check if the adapter supports real SQL parameters.
+ *
+ * @param string $type 'positional' or 'named'
+ * @return bool
+ */
+ public function supportsParameters($type)
+ {
+ if ($type == 'positional') {
+ return true;
+ }
+
+ // if its 'named' or anything else
+ return false;
+ }
+
+ /**
+ * Retrieve server version in PHP style
+ *
+ * @return string
+ */
+ public function getServerVersion()
+ {
+ $this->_connect();
+ $server_info = db2_server_info($this->_connection);
+ if ($server_info !== false) {
+ $version = $server_info->DBMS_VER;
+ if ($this->_isI5) {
+ $version = (int) substr($version, 0, 2) . '.' . (int) substr($version, 2, 2) . '.' . (int) substr($version, 4);
+ }
+ return $version;
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Return whether or not this is running on i5
+ *
+ * @return bool
+ */
+ public function isI5()
+ {
+ if ($this->_isI5 === null) {
+ $this->_determineI5();
+ }
+
+ return (bool) $this->_isI5;
+ }
+
+ /**
+ * Check the connection parameters according to verify
+ * type of used OS
+ *
+ * @return void
+ */
+ protected function _determineI5()
+ {
+ // first us the compiled flag.
+ $this->_isI5 = (php_uname('s') == 'OS400') ? true : false;
+
+ // if this is set, then us it
+ if (isset($this->_config['os'])){
+ if (strtolower($this->_config['os']) === 'i5') {
+ $this->_isI5 = true;
+ } else {
+ // any other value passed in, its null
+ $this->_isI5 = false;
+ }
+ }
+
+ }
+
+ /**
+ * Db2 On I5 specific method
+ *
+ * Returns a list of the tables in the database .
+ * Used only for DB2/400.
+ *
+ * @return array
+ */
+ protected function _i5listTables($schema = null)
+ {
+ //list of i5 libraries.
+ $tables = array();
+ if ($schema) {
+ $tablesStatement = db2_tables($this->_connection, null, $schema);
+ while ($rowTables = db2_fetch_assoc($tablesStatement) ) {
+ if ($rowTables['TABLE_NAME'] !== null) {
+ $tables[] = $rowTables['TABLE_NAME'];
+ }
+ }
+ } else {
+ $schemaStatement = db2_tables($this->_connection);
+ while ($schema = db2_fetch_assoc($schemaStatement)) {
+ if ($schema['TABLE_SCHEM'] !== null) {
+ // list of the tables which belongs to the selected library
+ $tablesStatement = db2_tables($this->_connection, NULL, $schema['TABLE_SCHEM']);
+ if (is_resource($tablesStatement)) {
+ while ($rowTables = db2_fetch_assoc($tablesStatement) ) {
+ if ($rowTables['TABLE_NAME'] !== null) {
+ $tables[] = $rowTables['TABLE_NAME'];
+ }
+ }
+ }
+ }
+ }
+ }
+
+ return $tables;
+ }
+
+ protected function _i5LastInsertId($objectName = null, $idType = null)
+ {
+
+ if ($objectName === null) {
+ $sql = 'SELECT IDENTITY_VAL_LOCAL() AS VAL FROM QSYS2.QSQPTABL';
+ $value = $this->fetchOne($sql);
+ return $value;
+ }
+
+ if (strtoupper($idType) === 'S'){
+ //check i5_lib option
+ $sequenceName = $objectName;
+ return $this->lastSequenceId($sequenceName);
+ }
+
+ //returns last identity value for the specified table
+ //if (strtoupper($idType) === 'I') {
+ $tableName = $objectName;
+ return $this->fetchOne('SELECT IDENTITY_VAL_LOCAL() from ' . $this->quoteIdentifier($tableName));
+ }
+
+}
+
+