| 1 | <?php
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| 2 | require_once("db_common.php");
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| 3 | /*! MSSQL implementation of DataWrapper
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| 4 | **/
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| 5 | class MsSQLDBDataWrapper extends DBDataWrapper{
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| 6 | private $last_id=""; //!< ID of previously inserted record
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| 7 | private $insert_operation=false; //!< flag of insert operation
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| 8 | private $start_from=false; //!< index of start position
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| 9 |
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| 10 | public function query($sql){
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| 11 | LogMaster::log($sql);
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| 12 | $res = mssql_query($sql,$this->connection);
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| 13 | if ($this->insert_operation){
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| 14 | $last = mssql_fetch_assoc($res);
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| 15 | $this->last_id = $last["dhx_id"];
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| 16 | mssql_free_result($res);
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| 17 | }
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| 18 | if ($this->start_from)
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| 19 | mssql_data_seek($res,$this->start_from);
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| 20 | return $res;
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| 21 | }
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| 22 |
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| 23 | public function get_next($res){
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| 24 | return mssql_fetch_assoc($res);
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| 25 | }
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| 26 |
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| 27 | protected function get_new_id(){
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| 28 | /*
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| 29 | MSSQL doesn't support identity or auto-increment fields
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| 30 | Insert SQL returns new ID value, which stored in last_id field
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| 31 | */
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| 32 | return $this->last_id;
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| 33 | }
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| 34 |
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| 35 | protected function insert_query($data,$request){
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| 36 | $sql = parent::insert_query($data,$request);
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| 37 | $this->insert_operation=true;
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| 38 | return $sql.";SELECT @@IDENTITY AS dhx_id";
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| 39 | }
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| 40 |
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| 41 | protected function select_query($select,$from,$where,$sort,$start,$count){
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| 42 | $sql="SELECT " ;
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| 43 | if ($count)
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| 44 | $sql.=" TOP ".($count+$start);
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| 45 | $sql.=" ".$select." FROM ".$from;
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| 46 | if ($where) $sql.=" WHERE ".$where;
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| 47 | if ($sort) $sql.=" ORDER BY ".$sort;
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| 48 | if ($start && $count)
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| 49 | $this->start_from=$start;
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| 50 | else
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| 51 | $this->start_from=false;
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| 52 | return $sql;
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| 53 | }
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| 54 |
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| 55 | public function escape($data){
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| 56 | /*
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| 57 | there is no special escaping method for mssql - use common logic
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| 58 | */
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| 59 | return str_replace("'","''",$data);
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| 60 | }
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| 61 |
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| 62 | public function begin_transaction(){
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| 63 | $this->query("BEGIN TRAN");
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| 64 | }
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| 65 | }
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| 66 | ?> |
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