datadict-firebird.inc.php

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<?php

class ADODB2_firebird extends ADODB_DataDict {

    var $databaseType = 'firebird';
    var $seqField = false;
    var $seqPrefix = 'gen_';
    var $blobSize = 40000;

    function ActualType($meta)
    {
        switch($meta) {
        case 'C': return 'VARCHAR';
        case 'XL': return 'VARCHAR(32000)';
        case 'X': return 'VARCHAR(4000)';

        case 'C2': return 'VARCHAR'; // up to 32K
        case 'X2': return 'VARCHAR(4000)';

        case 'B': return 'BLOB';

        case 'D': return 'DATE';
        case 'TS':
        case 'T': return 'TIMESTAMP';

        case 'L': return 'SMALLINT';
        case 'I': return 'INTEGER';
        case 'I1': return 'SMALLINT';
        case 'I2': return 'SMALLINT';
        case 'I4': return 'INTEGER';
        case 'I8': return 'INTEGER';

        case 'F': return 'DOUBLE PRECISION';
        case 'N': return 'DECIMAL';
        default:
            return $meta;
        }
    }

    function NameQuote($name = NULL)
    {
        if (!is_string($name)) {
            return FALSE;
        }

        $name = trim($name);

        if ( !is_object($this->connection) ) {
            return $name;
        }

        $quote = $this->connection->nameQuote;

        // if name is of the form `name`, quote it
        if ( preg_match('/^`(.+)`$/', $name, $matches) ) {
            return $quote . $matches[1] . $quote;
        }

        // if name contains special characters, quote it
        if ( !preg_match('/^[' . $this->nameRegex . ']+$/', $name) ) {
            return $quote . $name . $quote;
        }

        return $quote . $name . $quote;
    }

    function CreateDatabase($dbname, $options=false)
    {
        $options = $this->_Options($options);
        $sql = array();

        $sql[] = "DECLARE EXTERNAL FUNCTION LOWER CSTRING(80) RETURNS CSTRING(80) FREE_IT ENTRY_POINT 'IB_UDF_lower' MODULE_NAME 'ib_udf'";

        return $sql;
    }

    function _DropAutoIncrement($t)
    {
        if (strpos($t,'.') !== false) {
            $tarr = explode('.',$t);
            return 'DROP GENERATOR '.$tarr[0].'."gen_'.$tarr[1].'"';
        }
        return 'DROP GENERATOR "GEN_'.$t;
    }


    function _CreateSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
    {
        $suffix = '';

        if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
        if ($fnotnull) $suffix .= ' NOT NULL';
        if ($fautoinc) $this->seqField = $fname;
        if ($fconstraint) $suffix .= ' '.$fconstraint;

        return $suffix;
    }

/*
CREATE or replace TRIGGER jaddress_insert
before insert on jaddress
for each row
begin
IF ( NEW."seqField" IS NULL OR NEW."seqField" = 0 ) THEN
  NEW."seqField" = GEN_ID("GEN_tabname", 1);
end;
*/
    function _Triggers($tabname,$tableoptions)
    {
        if (!$this->seqField) return array();

        $tab1 = preg_replace( '/"/', '', $tabname );
        if ($this->schema) {
            $t = strpos($tab1,'.');
            if ($t !== false) $tab = substr($tab1,$t+1);
            else $tab = $tab1;
            $seqField = $this->seqField;
            $seqname = $this->schema.'.'.$this->seqPrefix.$tab;
            $trigname = $this->schema.'.trig_'.$this->seqPrefix.$tab;
        } else {
            $seqField = $this->seqField;
            $seqname = $this->seqPrefix.$tab1;
            $trigname = 'trig_'.$seqname;
        }
        if (isset($tableoptions['REPLACE']))
        { $sql[] = "DROP GENERATOR \"$seqname\"";
          $sql[] = "CREATE GENERATOR \"$seqname\"";
          $sql[] = "ALTER TRIGGER \"$trigname\" BEFORE INSERT OR UPDATE AS BEGIN IF ( NEW.$seqField IS NULL OR NEW.$seqField = 0 ) THEN NEW.$seqField = GEN_ID(\"$seqname\", 1); END";
        }
        else
        { $sql[] = "CREATE GENERATOR \"$seqname\"";
          $sql[] = "CREATE TRIGGER \"$trigname\" FOR $tabname BEFORE INSERT OR UPDATE AS BEGIN IF ( NEW.$seqField IS NULL OR NEW.$seqField = 0 ) THEN NEW.$seqField = GEN_ID(\"$seqname\", 1); END";
        }

        $this->seqField = false;
        return $sql;
    }

}