datadict/datadict-sybase.inc.php

<?php

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

class ADODB2_sybase extends ADODB_DataDict {
        var $databaseType = 'sybase';
        
        var $dropIndex = 'DROP INDEX %2$s.%1$s';
        
        function MetaType($t,$len=-1,$fieldobj=false)
        {
                if (is_object($t)) {
                        $fieldobj = $t;
                        $t = $fieldobj->type;
                        $len = $fieldobj->max_length;
                }
                
                $len = -1; // mysql max_length is not accurate
                switch (strtoupper($t)) {

                case 'INT': 
                case 'INTEGER': return  'I';
                case 'BIT':
                case 'TINYINT': return  'I1';
                case 'SMALLINT': return 'I2';
                case 'BIGINT':  return  'I8';
                
                case 'REAL':
                case 'FLOAT': return 'F';
                default: return parent::MetaType($t,$len,$fieldobj);
                }
        }
        
        function ActualType($meta)
        {
                switch(strtoupper($meta)) {
                case 'C': return 'VARCHAR';
                case 'XL':
                case 'X': return 'TEXT';
                
                case 'C2': return 'NVARCHAR';
                case 'X2': return 'NTEXT';
                
                case 'B': return 'IMAGE';
                        
                case 'D': return 'DATETIME';
                case 'TS':
                case 'T': return 'DATETIME';
                case 'L': return 'BIT';
                
                case 'I': return 'INT'; 
                case 'I1': return 'TINYINT';
                case 'I2': return 'SMALLINT';
                case 'I4': return 'INT';
                case 'I8': return 'BIGINT';
                
                case 'F': return 'REAL';
                case 'N': return 'NUMERIC';
                default:
                        return $meta;
                }
        }
        
        
        function AddColumnSQL($tabname, $flds)
        {
                $tabname = $this->TableName ($tabname);
                $f = array();
                list($lines,$pkey) = $this->_GenFields($flds);
                $s = "ALTER TABLE $tabname $this->addCol";
                foreach($lines as $v) {
                        $f[] = "\n $v";
                }
                $s .= implode(', ',$f);
                $sql[] = $s;
                return $sql;
        }
        
        function AlterColumnSQL($tabname, $flds)
        {
                $tabname = $this->TableName ($tabname);
                $sql = array();
                list($lines,$pkey) = $this->_GenFields($flds);
                foreach($lines as $v) {
                        $sql[] = "ALTER TABLE $tabname $this->alterCol $v";
                }

                return $sql;
        }
        
        function DropColumnSQL($tabname, $flds)
        {
                $tabname = $this->TableName($tabname);
                if (!is_array($flds)) $flds = explode(',',$flds);
                $f = array();
                $s = "ALTER TABLE $tabname";
                foreach($flds as $v) {
                        $f[] = "\n$this->dropCol ".$this->NameQuote($v);
                }
                $s .= implode(', ',$f);
                $sql[] = $s;
                return $sql;
        }
        
        // return string must begin with space
        function _CreateSuffix($fname,&$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned)
        {       
                $suffix = '';
                if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
                if ($fautoinc) $suffix .= ' DEFAULT AUTOINCREMENT';
                if ($fnotnull) $suffix .= ' NOT NULL';
                else if ($suffix == '') $suffix .= ' NULL';
                if ($fconstraint) $suffix .= ' '.$fconstraint;
                return $suffix;
        }
        
        /*
CREATE TABLE 
    [ database_name.[ owner ] . | owner. ] table_name 
    ( { < column_definition > 
        | column_name AS computed_column_expression 
        | < table_constraint > ::= [ CONSTRAINT constraint_name ] }

            | [ { PRIMARY KEY | UNIQUE } [ ,...n ] 
    ) 

[ ON { filegroup | DEFAULT } ] 
[ TEXTIMAGE_ON { filegroup | DEFAULT } ] 

< column_definition > ::= { column_name data_type } 
    [ COLLATE < collation_name > ] 
    [ [ DEFAULT constant_expression ] 
        | [ IDENTITY [ ( seed , increment ) [ NOT FOR REPLICATION ] ] ]
    ] 
    [ ROWGUIDCOL] 
    [ < column_constraint > ] [ ...n ] 

< column_constraint > ::= [ CONSTRAINT constraint_name ] 
    { [ NULL | NOT NULL ] 
        | [ { PRIMARY KEY | UNIQUE } 
            [ CLUSTERED | NONCLUSTERED ] 
            [ WITH FILLFACTOR = fillfactor ] 
            [ON {filegroup | DEFAULT} ] ] 
        ] 
        | [ [ FOREIGN KEY ] 
            REFERENCES ref_table [ ( ref_column ) ] 
            [ ON DELETE { CASCADE | NO ACTION } ] 
            [ ON UPDATE { CASCADE | NO ACTION } ] 
            [ NOT FOR REPLICATION ] 
        ] 
        | CHECK [ NOT FOR REPLICATION ] 
        ( logical_expression ) 
    } 

< table_constraint > ::= [ CONSTRAINT constraint_name ] 
    { [ { PRIMARY KEY | UNIQUE } 
        [ CLUSTERED | NONCLUSTERED ] 
        { ( column [ ASC | DESC ] [ ,...n ] ) } 
        [ WITH FILLFACTOR = fillfactor ] 
        [ ON { filegroup | DEFAULT } ] 
    ] 
    | FOREIGN KEY 
        [ ( column [ ,...n ] ) ] 
        REFERENCES ref_table [ ( ref_column [ ,...n ] ) ] 
        [ ON DELETE { CASCADE | NO ACTION } ] 
        [ ON UPDATE { CASCADE | NO ACTION } ] 
        [ NOT FOR REPLICATION ] 
    | CHECK [ NOT FOR REPLICATION ] 
        ( search_conditions ) 
    } 


        */
        
        /*
        CREATE [ UNIQUE ] [ CLUSTERED | NONCLUSTERED ] INDEX index_name 
    ON { table | view } ( column [ ASC | DESC ] [ ,...n ] ) 
                [ WITH < index_option > [ ,...n] ] 
                [ ON filegroup ]
                < index_option > :: = 
                    { PAD_INDEX | 
                        FILLFACTOR = fillfactor | 
                        IGNORE_DUP_KEY | 
                        DROP_EXISTING | 
                    STATISTICS_NORECOMPUTE | 
                    SORT_IN_TEMPDB  
                }
*/
        function _IndexSQL($idxname, $tabname, $flds, $idxoptions)
        {
                $sql = array();
                
                if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {
                        $sql[] = sprintf ($this->dropIndex, $idxname, $tabname);
                        if ( isset($idxoptions['DROP']) )
                                return $sql;
                }
                
                if ( empty ($flds) ) {
                        return $sql;
                }
                
                $unique = isset($idxoptions['UNIQUE']) ? ' UNIQUE' : '';
                $clustered = isset($idxoptions['CLUSTERED']) ? ' CLUSTERED' : '';
                
                if ( is_array($flds) )
                        $flds = implode(', ',$flds);
                $s = 'CREATE' . $unique . $clustered . ' INDEX ' . $idxname . ' ON ' . $tabname . ' (' . $flds . ')';
                
                if ( isset($idxoptions[$this->upperName]) )
                        $s .= $idxoptions[$this->upperName];

                $sql[] = $s;
                
                return $sql;
        }
}
?>