datadict-sybase.inc.php

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<?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, $tableflds='', $tableoptions='')
    {
        $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, $tableflds='', $tableoptions='')
    {
        $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;
    }
}