datadict-sapdb.inc.php

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<?php

// security - hide paths
if (!defined('ADODB_DIR')) die();

class ADODB2_sapdb extends ADODB_DataDict {

    var $databaseType = 'sapdb';
    var $seqField = false;
    var $renameColumn = 'RENAME COLUMN %s.%s TO %s';

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

        case 'C2': return 'VARCHAR UNICODE';
        case 'X2': return 'LONG UNICODE';

        case 'B': return 'LONG';

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

        case 'L': return 'BOOLEAN';
        case 'I': return 'INTEGER';
        case 'I1': return 'FIXED(3)';
        case 'I2': return 'SMALLINT';
        case 'I4': return 'INTEGER';
        case 'I8': return 'FIXED(20)';

        case 'F': return 'FLOAT(38)';
        case 'N': return 'FIXED';
        default:
            return $meta;
        }
    }

    function MetaType($t,$len=-1,$fieldobj=false)
    {
        if (is_object($t)) {
            $fieldobj = $t;
            $t = $fieldobj->type;
            $len = $fieldobj->max_length;
        }
        static $maxdb_type2adodb = array(
            'VARCHAR'   => 'C',
            'CHARACTER' => 'C',
            'LONG'      => 'X',     // no way to differ between 'X' and 'B' :-(
            'DATE'      => 'D',
            'TIMESTAMP' => 'T',
            'BOOLEAN'   => 'L',
            'INTEGER'   => 'I4',
            'SMALLINT'  => 'I2',
            'FLOAT'     => 'F',
            'FIXED'     => 'N',
        );
        $type = isset($maxdb_type2adodb[$t]) ? $maxdb_type2adodb[$t] : 'C';

        // convert integer-types simulated with fixed back to integer
        if ($t == 'FIXED' && !$fieldobj->scale && ($len == 20 || $len == 3)) {
            $type = $len == 20 ? 'I8' : 'I1';
        }
        if ($fieldobj->auto_increment) $type = 'R';

        return $type;
    }

    // return string must begin with space
    function _CreateSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
    {
        $suffix = '';
        if ($funsigned) $suffix .= ' UNSIGNED';
        if ($fnotnull) $suffix .= ' NOT NULL';
        if ($fautoinc) $suffix .= ' DEFAULT SERIAL';
        elseif (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
        if ($fconstraint) $suffix .= ' '.$fconstraint;
        return $suffix;
    }

    function AddColumnSQL($tabname, $flds)
    {
        $tabname = $this->TableName ($tabname);
        $sql = array();
        list($lines,$pkey) = $this->_GenFields($flds);
        return array( 'ALTER TABLE ' . $tabname . ' ADD (' . implode(', ',$lines) . ')' );
    }

    function AlterColumnSQL($tabname, $flds, $tableflds='', $tableoptions='')
    {
        $tabname = $this->TableName ($tabname);
        $sql = array();
        list($lines,$pkey) = $this->_GenFields($flds);
        return array( 'ALTER TABLE ' . $tabname . ' MODIFY (' . implode(', ',$lines) . ')' );
    }

    function DropColumnSQL($tabname, $flds, $tableflds='', $tableoptions='')
    {
        $tabname = $this->TableName ($tabname);
        if (!is_array($flds)) $flds = explode(',',$flds);
        foreach($flds as $k => $v) {
            $flds[$k] = $this->NameQuote($v);
        }
        return array( 'ALTER TABLE ' . $tabname . ' DROP (' . implode(', ',$flds) . ')' );
    }
}