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Diffstat (limited to 'framework/3rdParty/adodb/drivers/adodb-odbc_db2.inc.php')
| -rw-r--r-- | framework/3rdParty/adodb/drivers/adodb-odbc_db2.inc.php | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/framework/3rdParty/adodb/drivers/adodb-odbc_db2.inc.php b/framework/3rdParty/adodb/drivers/adodb-odbc_db2.inc.php new file mode 100644 index 00000000..4e9fee2a --- /dev/null +++ b/framework/3rdParty/adodb/drivers/adodb-odbc_db2.inc.php @@ -0,0 +1,362 @@ +<?php +/* +V4.81 3 May 2006 (c) 2000-2006 John Lim (jlim#natsoft.com.my). All rights reserved. + Released under both BSD license and Lesser GPL library license. + Whenever there is any discrepancy between the two licenses, + the BSD license will take precedence. +Set tabs to 4 for best viewing. + + Latest version is available at http://adodb.sourceforge.net + + DB2 data driver. Requires ODBC. + +From phpdb list: + +Hi Andrew, + +thanks a lot for your help. Today we discovered what +our real problem was: + +After "playing" a little bit with the php-scripts that try +to connect to the IBM DB2, we set the optional parameter +Cursortype when calling odbc_pconnect(....). + +And the exciting thing: When we set the cursor type +to SQL_CUR_USE_ODBC Cursor Type, then +the whole query speed up from 1 till 10 seconds +to 0.2 till 0.3 seconds for 100 records. Amazing!!! + +Therfore, PHP is just almost fast as calling the DB2 +from Servlets using JDBC (don't take too much care +about the speed at whole: the database was on a +completely other location, so the whole connection +was made over a slow network connection). + +I hope this helps when other encounter the same +problem when trying to connect to DB2 from +PHP. + +Kind regards, +Christian Szardenings + +2 Oct 2001 +Mark Newnham has discovered that the SQL_CUR_USE_ODBC is not supported by +IBM's DB2 ODBC driver, so this must be a 3rd party ODBC driver. + +From the IBM CLI Reference: + +SQL_ATTR_ODBC_CURSORS (DB2 CLI v5) +This connection attribute is defined by ODBC, but is not supported by DB2 +CLI. Any attempt to set or get this attribute will result in an SQLSTATE of +HYC00 (Driver not capable). + +A 32-bit option specifying how the Driver Manager uses the ODBC cursor +library. + +So I guess this means the message [above] was related to using a 3rd party +odbc driver. + +Setting SQL_CUR_USE_ODBC +======================== +To set SQL_CUR_USE_ODBC for drivers that require it, do this: + +$db = NewADOConnection('db2'); +$db->curMode = SQL_CUR_USE_ODBC; +$db->Connect($dsn, $userid, $pwd); + + + +USING CLI INTERFACE +=================== + +I have had reports that the $host and $database params have to be reversed in +Connect() when using the CLI interface. From Halmai Csongor csongor.halmai#nexum.hu: + +> The symptom is that if I change the database engine from postgres or any other to DB2 then the following +> connection command becomes wrong despite being described this version to be correct in the docs. +> +> $connection_object->Connect( $DATABASE_HOST, $DATABASE_AUTH_USER_NAME, $DATABASE_AUTH_PASSWORD, $DATABASE_NAME ) +> +> In case of DB2 I had to swap the first and last arguments in order to connect properly. + + +*/ + +// security - hide paths +if (!defined('ADODB_DIR')) die(); + +if (!defined('_ADODB_ODBC_LAYER')) { + include(ADODB_DIR."/drivers/adodb-odbc.inc.php"); +} +if (!defined('ADODB_DB2')){ +define('ADODB_DB2',1); + +class ADODB_DB2 extends ADODB_odbc { + var $databaseType = "db2"; + var $concat_operator = '||'; + var $sysDate = 'CURRENT_DATE'; + var $sysTimeStamp = 'CURRENT TIMESTAMP'; + // The complete string representation of a timestamp has the form + // yyyy-mm-dd-hh.mm.ss.nnnnnn. + var $fmtTimeStamp = "'Y-m-d-H.i.s'"; + var $ansiOuter = true; + var $identitySQL = 'values IDENTITY_VAL_LOCAL()'; + var $_bindInputArray = true; + var $hasInsertID = true; + + function ADODB_DB2() + { + if (strncmp(PHP_OS,'WIN',3) === 0) $this->curmode = SQL_CUR_USE_ODBC; + $this->ADODB_odbc(); + } + + function IfNull( $field, $ifNull ) + { + return " COALESCE($field, $ifNull) "; // if DB2 UDB + } + + function ServerInfo() + { + //odbc_setoption($this->_connectionID,1,101 /*SQL_ATTR_ACCESS_MODE*/, 1 /*SQL_MODE_READ_ONLY*/); + $vers = $this->GetOne('select versionnumber from sysibm.sysversions'); + //odbc_setoption($this->_connectionID,1,101, 0 /*SQL_MODE_READ_WRITE*/); + return array('description'=>'DB2 ODBC driver', 'version'=>$vers); + } + + function _insertid() + { + return $this->GetOne($this->identitySQL); + } + + function RowLock($tables,$where,$flds='1 as ignore') + { + if ($this->_autocommit) $this->BeginTrans(); + return $this->GetOne("select $flds from $tables where $where for update"); + } + + function &MetaTables($ttype=false,$showSchema=false, $qtable="%", $qschema="%") + { + global $ADODB_FETCH_MODE; + + $savem = $ADODB_FETCH_MODE; + $ADODB_FETCH_MODE = ADODB_FETCH_NUM; + $qid = odbc_tables($this->_connectionID, "", $qschema, $qtable, ""); + + $rs = new ADORecordSet_odbc($qid); + + $ADODB_FETCH_MODE = $savem; + if (!$rs) { + $false = false; + return $false; + } + $rs->_has_stupid_odbc_fetch_api_change = $this->_has_stupid_odbc_fetch_api_change; + + $arr =& $rs->GetArray(); + //print_r($arr); + + $rs->Close(); + $arr2 = array(); + + if ($ttype) { + $isview = strncmp($ttype,'V',1) === 0; + } + for ($i=0; $i < sizeof($arr); $i++) { + + if (!$arr[$i][2]) continue; + if (strncmp($arr[$i][1],'SYS',3) === 0) continue; + + $type = $arr[$i][3]; + + if ($showSchema) $arr[$i][2] = $arr[$i][1].'.'.$arr[$i][2]; + + if ($ttype) { + if ($isview) { + if (strncmp($type,'V',1) === 0) $arr2[] = $arr[$i][2]; + } else if (strncmp($type,'T',1) === 0) $arr2[] = $arr[$i][2]; + } else if (strncmp($type,'S',1) !== 0) $arr2[] = $arr[$i][2]; + } + return $arr2; + } + + function &MetaIndexes ($table, $primary = FALSE, $owner=false) + { + // save old fetch mode + global $ADODB_FETCH_MODE; + $save = $ADODB_FETCH_MODE; + $ADODB_FETCH_MODE = ADODB_FETCH_NUM; + if ($this->fetchMode !== FALSE) { + $savem = $this->SetFetchMode(FALSE); + } + $false = false; + // get index details + $table = strtoupper($table); + $SQL="SELECT NAME, UNIQUERULE, COLNAMES FROM SYSIBM.SYSINDEXES WHERE TBNAME='$table'"; + if ($primary) + $SQL.= " AND UNIQUERULE='P'"; + $rs = $this->Execute($SQL); + if (!is_object($rs)) { + if (isset($savem)) + $this->SetFetchMode($savem); + $ADODB_FETCH_MODE = $save; + return $false; + } + $indexes = array (); + // parse index data into array + while ($row = $rs->FetchRow()) { + $indexes[$row[0]] = array( + 'unique' => ($row[1] == 'U' || $row[1] == 'P'), + 'columns' => array() + ); + $cols = ltrim($row[2],'+'); + $indexes[$row[0]]['columns'] = explode('+', $cols); + } + if (isset($savem)) { + $this->SetFetchMode($savem); + $ADODB_FETCH_MODE = $save; + } + return $indexes; + } + + // Format date column in sql string given an input format that understands Y M D + function SQLDate($fmt, $col=false) + { + // use right() and replace() ? + if (!$col) $col = $this->sysDate; + $s = ''; + + $len = strlen($fmt); + for ($i=0; $i < $len; $i++) { + if ($s) $s .= '||'; + $ch = $fmt[$i]; + switch($ch) { + case 'Y': + case 'y': + $s .= "char(year($col))"; + break; + case 'M': + $s .= "substr(monthname($col),1,3)"; + break; + case 'm': + $s .= "right(digits(month($col)),2)"; + break; + case 'D': + case 'd': + $s .= "right(digits(day($col)),2)"; + break; + case 'H': + case 'h': + if ($col != $this->sysDate) $s .= "right(digits(hour($col)),2)"; + else $s .= "''"; + break; + case 'i': + case 'I': + if ($col != $this->sysDate) + $s .= "right(digits(minute($col)),2)"; + else $s .= "''"; + break; + case 'S': + case 's': + if ($col != $this->sysDate) + $s .= "right(digits(second($col)),2)"; + else $s .= "''"; + break; + default: + if ($ch == '\\') { + $i++; + $ch = substr($fmt,$i,1); + } + $s .= $this->qstr($ch); + } + } + return $s; + } + + + function &SelectLimit($sql,$nrows=-1,$offset=-1,$inputArr=false) + { + $nrows = (integer) $nrows; + if ($offset <= 0) { + // could also use " OPTIMIZE FOR $nrows ROWS " + if ($nrows >= 0) $sql .= " FETCH FIRST $nrows ROWS ONLY "; + $rs =& $this->Execute($sql,$inputArr); + } else { + if ($offset > 0 && $nrows < 0); + else { + $nrows += $offset; + $sql .= " FETCH FIRST $nrows ROWS ONLY "; + } + $rs =& ADOConnection::SelectLimit($sql,-1,$offset,$inputArr); + } + + return $rs; + } + +}; + + +class ADORecordSet_db2 extends ADORecordSet_odbc { + + var $databaseType = "db2"; + + function ADORecordSet_db2($id,$mode=false) + { + $this->ADORecordSet_odbc($id,$mode); + } + + function MetaType($t,$len=-1,$fieldobj=false) + { + if (is_object($t)) { + $fieldobj = $t; + $t = $fieldobj->type; + $len = $fieldobj->max_length; + } + + switch (strtoupper($t)) { + case 'VARCHAR': + case 'CHAR': + case 'CHARACTER': + case 'C': + if ($len <= $this->blobSize) return 'C'; + + case 'LONGCHAR': + case 'TEXT': + case 'CLOB': + case 'DBCLOB': // double-byte + case 'X': + return 'X'; + + case 'BLOB': + case 'GRAPHIC': + case 'VARGRAPHIC': + return 'B'; + + case 'DATE': + case 'D': + return 'D'; + + case 'TIME': + case 'TIMESTAMP': + case 'T': + return 'T'; + + //case 'BOOLEAN': + //case 'BIT': + // return 'L'; + + //case 'COUNTER': + // return 'R'; + + case 'INT': + case 'INTEGER': + case 'BIGINT': + case 'SMALLINT': + case 'I': + return 'I'; + + default: return 'N'; + } + } +} + +} //define +?>
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