adodb-ibase.inc.php

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<?php
/*
V4.22 15 Apr 2004  (c) 2000-2004 John Lim ([e-mail]). 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.

  Latest version is available at http://php.weblogs.com/
  
  Interbase data driver. Requires interbase client. Works on Windows and Unix.

  3 Jan 2002 -- suggestions by Hans-Peter Oeri <[e-mail]>
  	changed transaction handling and added experimental blob stuff
  
  Docs to interbase at the website
   http://www.synectics.co.za/php3/tutorial/IB_PHP3_API.html
   
  To use gen_id(), see
   http://www.volny.cz/iprenosil/interbase/ip_ib_code.htm#_code_creategen
   
   $rs = $conn->Execute('select gen_id(adodb,1) from rdb$database');
   $id = $rs->fields[0];
   $conn->Execute("insert into table (id, col1,...) values ($id, $val1,...)");
*/


class ADODB_ibase extends ADOConnection {
	var $databaseType = "ibase";
	var $dataProvider = "ibase";
	var $replaceQuote = "''"; // string to use to replace quotes
	var $ibase_timefmt = '%Y-%m-%d'; // For hours,mins,secs change to '%Y-%m-%d %H:%M:%S';
	var $fmtDate = "'Y-m-d'";
	var $fmtTimeStamp = "'Y-m-d, H:i:s'";
	var $concat_operator='||';
	var $_transactionID;
	var $metaTablesSQL = "select rdb\$relation_name from rdb\$relations where rdb\$relation_name not like 'RDB\$%'";
	//OPN STUFF start
	var $metaColumnsSQL = "select a.rdb\$field_name, a.rdb\$null_flag, a.rdb\$default_source, b.rdb\$field_length, b.rdb\$field_scale, b.rdb\$field_sub_type, b.rdb\$field_precision, b.rdb\$field_type from rdb\$relation_fields a, rdb\$fields b where a.rdb\$field_source = b.rdb\$field_name and a.rdb\$relation_name = '%s' order by a.rdb\$field_position asc";
	//OPN STUFF end
	var $ibasetrans;
	var $hasGenID = true;
	var $_bindInputArray = true;
	var $buffers = 0;
	var $dialect = 1;
	var $sysDate = "cast('TODAY' as date)";
	var $sysTimeStamp = "cast('NOW' as timestamp)";
	var $ansiOuter = true;
	var $hasAffectedRows = false;
	var $poorAffectedRows = true;
	var $blobEncodeType = 'C';
	
	function ADODB_ibase() 
	{
		 if (defined('IBASE_DEFAULT')) $this->ibasetrans = IBASE_DEFAULT;
  	}
	
	function MetaPrimaryKeys($table,$owner_notused=false,$internalKey=false)
	{	
		if ($internalKey) return array('RDB$DB_KEY');
		
		$table = strtoupper($table);
		
		$sql = 'SELECT S.RDB$FIELD_NAME AFIELDNAME
	FROM RDB$INDICES I JOIN RDB$INDEX_SEGMENTS S ON I.RDB$INDEX_NAME=S.RDB$INDEX_NAME  
	WHERE I.RDB$RELATION_NAME=\''.$table.'\' and I.RDB$INDEX_NAME like \'RDB$PRIMARY%\'
	ORDER BY I.RDB$INDEX_NAME,S.RDB$FIELD_POSITION';

		$a = $this->GetCol($sql,false,true);
		if ($a && sizeof($a)>0) return $a;
		return false;	  
	}
	
	function ServerInfo()
	{
		$arr['dialect'] = $this->dialect;
		switch($arr['dialect']) {
		case '': 
		case '1': $s = 'Interbase 5.5 or earlier'; break;
		case '2': $s = 'Interbase 5.6'; break;
		default:
		case '3': $s = 'Interbase 6.0'; break;
		}
		$arr['version'] = ADOConnection::_findvers($s);
		$arr['description'] = $s;
		return $arr;
	}

	function BeginTrans()
	{	 
		if ($this->transOff) return true;
		$this->transCnt += 1;
		$this->autoCommit = false;
	 	$this->_transactionID = $this->_connectionID;//ibase_trans($this->ibasetrans, $this->_connectionID);
		return $this->_transactionID;
	}
	
	function CommitTrans($ok=true) 
	{ 
		if (!$ok) return $this->RollbackTrans();
		if ($this->transOff) return true;
		if ($this->transCnt) $this->transCnt -= 1;
		$ret = false;
		$this->autoCommit = true;
		if ($this->_transactionID) {
			   		//print ' commit ';
			$ret = ibase_commit($this->_transactionID);
		}
		$this->_transactionID = false;
		return $ret;
	}
	
	function RollbackTrans()
	{
		if ($this->transOff) return true;
		if ($this->transCnt) $this->transCnt -= 1;
		$ret = false;
		$this->autoCommit = true;
		if ($this->_transactionID) 
				  $ret = ibase_rollback($this->_transactionID);
		$this->_transactionID = false;   
		
		return $ret;
	}
	
	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);
        }
        $table = strtoupper($table);
        $sql = "SELECT * FROM RDB\$INDICES WHERE RDB\$RELATION_NAME = '".$table."'";
        if (!$primary) {
        	$sql .= " AND RDB\$INDEX_NAME NOT LIKE 'RDB\$%'";
        } else {
        	$sql .= " AND RDB\$INDEX_NAME NOT LIKE 'RDB\$FOREIGN%'";
        }
        // get index details
        $rs = $this->Execute($sql);
        if (!is_object($rs)) {
	        // restore fetchmode
	        if (isset($savem)) {
	            $this->SetFetchMode($savem);
	        }
	        $ADODB_FETCH_MODE = $save;
            return FALSE;
        }
        
        $indexes = array ();
		while ($row = $rs->FetchRow()) {
			$index = $row[0];
             if (!isset($indexes[$index])) {
             		if (is_null($row[3])) {$row[3] = 0;}
                     $indexes[$index] = array(
                             'unique' => ($row[3] == 1),
                             'columns' => array()
                     );
             }
			$sql = "SELECT * FROM RDB\$INDEX_SEGMENTS WHERE RDB\$INDEX_NAME = '".$name."' ORDER BY RDB\$FIELD_POSITION ASC";
			$rs1 = $this->Execute($sql);
            while ($row1 = $rs1->FetchRow()) {
             	$indexes[$index]['columns'][$row1[2]] = $row1[1];
        	}
		}
        // restore fetchmode
        if (isset($savem)) {
            $this->SetFetchMode($savem);
        }
        $ADODB_FETCH_MODE = $save;
        
        return $indexes;
	}

	
	// See http://community.borland.com/article/0,1410,25844,00.html
	function RowLock($tables,$where,$col)
	{
		if ($this->autoCommit) $this->BeginTrans();
		$this->Execute("UPDATE $table SET $col=$col WHERE $where "); // is this correct - jlim?
		return 1;
	}
	
	
	function CreateSequence($seqname,$startID=1)
	{
		$ok = $this->Execute(("INSERT INTO RDB\$GENERATORS (RDB\$GENERATOR_NAME) VALUES (UPPER('$seqname'))" ));
		if (!$ok) return false;
		return $this->Execute("SET GENERATOR $seqname TO ".($startID-1).';');
	}
	
	function DropSequence($seqname)
	{
		$seqname = strtoupper($seqname);
		$this->Execute("delete from RDB\$GENERATORS where RDB\$GENERATOR_NAME='$seqname'");
	}
	
	function GenID($seqname='adodbseq',$startID=1)
	{
		$getnext = ("SELECT Gen_ID($seqname,1) FROM RDB\$DATABASE");
		$rs = @$this->Execute($getnext);
		if (!$rs) {
			$this->Execute(("INSERT INTO RDB\$GENERATORS (RDB\$GENERATOR_NAME) VALUES (UPPER('$seqname'))" ));
			$this->Execute("SET GENERATOR $seqname TO ".($startID-1).';');
			$rs = $this->Execute($getnext);
		}
		if ($rs && !$rs->EOF) $this->genID = (integer) reset($rs->fields);
		else $this->genID = 0; // false
		
		if ($rs) $rs->Close();
		
		return $this->genID;
	}

	function SelectDB($dbName) 
	{
		   return false;
	}

	function _handleerror()
	{
		$this->_errorMsg = ibase_errmsg();
	}

	function ErrorNo() 
	{
		if (preg_match('/error code = ([\-0-9]*)/i', $this->_errorMsg,$arr)) return (integer) $arr[1];
		else return 0;
	}

	function ErrorMsg() 
	{
			return $this->_errorMsg;
	}

	   // returns true or false
	function _connect($argHostname, $argUsername, $argPassword, $argDatabasename)
	{  
		if (!function_exists('ibase_pconnect')) return false;
		if ($argDatabasename) $argHostname .= ':'.$argDatabasename;
		$this->_connectionID = ibase_connect($argHostname,$argUsername,$argPassword,$this->charSet,$this->buffers,$this->dialect);
	 	if ($this->dialect != 1) { // http://www.ibphoenix.com/ibp_60_del_id_ds.html
			$this->replaceQuote = "''";
		}
		if ($this->_connectionID === false) {
			$this->_handleerror();
			return false;
		}
		
		ibase_timefmt($this->ibase_timefmt);	
		return true;
	}
	   // returns true or false
	function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
	{
		if (!function_exists('ibase_pconnect')) return false;
		if ($argDatabasename) $argHostname .= ':'.$argDatabasename;
		$this->_connectionID = ibase_pconnect($argHostname,$argUsername,$argPassword,$this->charSet,$this->buffers,$this->dialect);
		if ($this->dialect != 1) { // http://www.ibphoenix.com/ibp_60_del_id_ds.html
			$this->replaceQuote = "''";
		}
		if ($this->_connectionID === false) {
			$this->_handleerror();
			return false;
		}
		
		ibase_timefmt($this->ibase_timefmt);
		return true;
	}	
	
	function Prepare($sql)
	{
		$stmt = ibase_prepare($this->_connectionID,$sql);
		if (!$stmt) return false;
		return array($sql,$stmt);
	}

	   // returns query ID if successful, otherwise false
	   // there have been reports of problems with nested queries - the code is probably not re-entrant?
	function _query($sql,$iarr=false)
	{ 

		if (!$this->autoCommit && $this->_transactionID) {
			$conn = $this->_transactionID;
			$docommit = false;
		} else {
			$conn = $this->_connectionID;
			$docommit = true;
		}
		if (is_array($sql)) {
			$fn = 'ibase_execute';
			$sql = $sql[1];
			
			if (is_array($iarr)) {
				if  (ADODB_PHPVER >= 0x4050) { // actually 4.0.4
					if ( !isset($iarr[0]) ) $iarr[0] = ''; // PHP5 compat hack
					$fnarr =& array_merge( array($sql) , $iarr);
					$ret = call_user_func_array($fn,$fnarr);
				} else {
					switch(sizeof($iarr)) {
					case 1: $ret = $fn($sql,$iarr[0]); break;
					case 2: $ret = $fn($sql,$iarr[0],$iarr[1]); break;
					case 3: $ret = $fn($sql,$iarr[0],$iarr[1],$iarr[2]); break;
					case 4: $ret = $fn($sql,$iarr[0],$iarr[1],$iarr[2],$iarr[3]); break;
					case 5: $ret = $fn($sql,$iarr[0],$iarr[1],$iarr[2],$iarr[3],$iarr[4]); break;
					case 6: $ret = $fn($sql,$iarr[0],$iarr[1],$iarr[2],$iarr[3],$iarr[4],$iarr[5]); break;
					case 7: $ret = $fn($sql,$iarr[0],$iarr[1],$iarr[2],$iarr[3],$iarr[4],$iarr[5],$iarr[6]); break;
					default: ADOConnection::outp( "Too many parameters to ibase query $sql");
					case 8: $ret = $fn($sql,$iarr[0],$iarr[1],$iarr[2],$iarr[3],$iarr[4],$iarr[5],$iarr[6],$iarr[7]); break;
					}
				}
			} else $ret = $fn($sql); 
		} else {
			$fn = 'ibase_query';
		
			if (is_array($iarr)) {	
				if (ADODB_PHPVER >= 0x4050) { // actually 4.0.4
					if ( !isset($iarr[0]) ) $iarr[0] = ''; // PHP5 compat hack
					$fnarr =& array_merge( array($conn,$sql) , $iarr);
					$ret = call_user_func_array($fn,$fnarr);
				} else {
					switch(sizeof($iarr)) {
					case 1: $ret = $fn($conn,$sql,$iarr[0]); break;
					case 2: $ret = $fn($conn,$sql,$iarr[0],$iarr[1]); break;
					case 3: $ret = $fn($conn,$sql,$iarr[0],$iarr[1],$iarr[2]); break;
					case 4: $ret = $fn($conn,$sql,$iarr[0],$iarr[1],$iarr[2],$iarr[3]); break;
					case 5: $ret = $fn($conn,$sql,$iarr[0],$iarr[1],$iarr[2],$iarr[3],$iarr[4]); break;
					case 6: $ret = $fn($conn,$sql,$iarr[0],$iarr[1],$iarr[2],$iarr[3],$iarr[4],$iarr[5]); break;
					case 7: $ret = $fn($conn,$sql,$iarr[0],$iarr[1],$iarr[2],$iarr[3],$iarr[4],$iarr[5],$iarr[6]); break;
					default: ADOConnection::outp( "Too many parameters to ibase query $sql");
					case 8: $ret = $fn($conn,$sql,$iarr[0],$iarr[1],$iarr[2],$iarr[3],$iarr[4],$iarr[5],$iarr[6],$iarr[7]); break;
					}
				}
			} else $ret = $fn($conn,$sql); 
		}
		if ($docommit && $ret === true) ibase_commit($this->_connectionID);

		$this->_handleerror();
		return $ret;
	}

	 // returns true or false
	 function _close()
	 {	   
		if (!$this->autoCommit) @ibase_rollback($this->_connectionID);
		return @ibase_close($this->_connectionID);
	 }
	
	//OPN STUFF start
	function _ConvertFieldType(&$fld, $ftype, $flen, $fscale, $fsubtype, $fprecision, $isInterbase6)
	{
		$fscale = abs($fscale);
		$fld->max_length = $flen;
		$fld->scale = null;
		switch($ftype){
			case 7: 
			case 8:
				if ($isInterbase6) {
				    switch($fsubtype){
				    	case 0: 
				    		$fld->type = ($ftype == 7 ? 'smallint' : 'integer');
				    		break;
				    	case 1: 
				    		$fld->type = 'numeric';
							$fld->max_length = $fprecision;
							$fld->scale = $fscale;
				    		break;
				    	case 2:
				    		$fld->type = 'decimal';
							$fld->max_length = $fprecision;
							$fld->scale = $fscale;
				    		break;
				    } // switch
				} else {
					if ($fscale !=0) {
					    $fld->type = 'decimal';
						$fld->scale = $fscale;
						$fld->max_length = ($ftype == 7 ? 4 : 9);
					} else {
						$fld->type = ($ftype == 7 ? 'smallint' : 'integer');
					}
				}
				break;
			case 16: 
				if ($isInterbase6) {
				    switch($fsubtype){
				    	case 0: 
				    		$fld->type = 'decimal';
							$fld->max_length = 18;
							$fld->scale = 0;
				    		break;
				    	case 1: 
				    		$fld->type = 'numeric';
							$fld->max_length = $fprecision;
							$fld->scale = $fscale;
				    		break;
				    	case 2:
				    		$fld->type = 'decimal';
							$fld->max_length = $fprecision;
							$fld->scale = $fscale;
				    		break;
				    } // switch
				}
				break;