datadict/datadict-sapdb.inc.php

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

        function DropColumnSQL($tabname, $flds)
        {
                $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) . ')' );
        }       
}

?>