[6779] | 1 | <?php
|
---|
| 2 | require_once("db_common.php");
|
---|
| 3 | /*! Implementation of DataWrapper for Oracle
|
---|
| 4 | **/
|
---|
| 5 | class OracleDBDataWrapper extends DBDataWrapper{
|
---|
| 6 | private $last_id=""; //id of previously inserted record
|
---|
| 7 | private $insert_operation=false; //flag of insert operation
|
---|
| 8 |
|
---|
| 9 | public function query($sql){
|
---|
| 10 | LogMaster::log($sql);
|
---|
| 11 | $stm = oci_parse($this->connection,$sql);
|
---|
| 12 | if ($stm===false) throw new Exception("Oracle - sql parsing failed\n".oci_error($this->connection));
|
---|
| 13 |
|
---|
| 14 | $out = array(0=>null);
|
---|
| 15 | if($this->insert_operation){
|
---|
| 16 | oci_bind_by_name($stm,":outID",$out[0],999);
|
---|
| 17 | $this->insert_operation=false;
|
---|
| 18 | }
|
---|
| 19 |
|
---|
| 20 |
|
---|
| 21 | $mode = ($this->is_record_transaction() || $this->is_global_transaction())?OCI_DEFAULT:OCI_COMMIT_ON_SUCCESS;
|
---|
| 22 | $res=oci_execute($stm,$mode);
|
---|
| 23 | if ($res===false) throw new Exception("Oracle - sql execution failed\n".oci_error($this->connection));
|
---|
| 24 |
|
---|
| 25 | $this->last_id=$out[0];
|
---|
| 26 |
|
---|
| 27 | return $stm;
|
---|
| 28 | }
|
---|
| 29 |
|
---|
| 30 | public function get_next($res){
|
---|
| 31 | $data = oci_fetch_assoc($res);
|
---|
| 32 | if (array_key_exists("VALUE",$data))
|
---|
| 33 | $data["value"]=$data["VALUE"];
|
---|
| 34 | return $data;
|
---|
| 35 | }
|
---|
| 36 |
|
---|
| 37 | protected function get_new_id(){
|
---|
| 38 | /*
|
---|
| 39 | Oracle doesn't support identity or auto-increment fields
|
---|
| 40 | Insert SQL returns new ID value, which stored in last_id field
|
---|
| 41 | */
|
---|
| 42 | return $this->last_id;
|
---|
| 43 | }
|
---|
| 44 |
|
---|
| 45 | protected function insert_query($data,$request){
|
---|
| 46 | $sql = parent::insert_query($data,$request);
|
---|
| 47 | $this->insert_operation=true;
|
---|
| 48 | return $sql." returning ".$this->config->id["db_name"]." into :outID";
|
---|
| 49 | }
|
---|
| 50 |
|
---|
| 51 | protected function select_query($select,$from,$where,$sort,$start,$count){
|
---|
| 52 | $sql="SELECT ".$select." FROM ".$from;
|
---|
| 53 | if ($where) $sql.=" WHERE ".$where;
|
---|
| 54 | if ($sort) $sql.=" ORDER BY ".$sort;
|
---|
| 55 | if ($start || $count)
|
---|
| 56 | $sql="SELECT * FROM ( select /*+ FIRST_ROWS(".$count.")*/dhx_table.*, ROWNUM rnum FROM (".$sql.") dhx_table where ROWNUM <= ".($count+$start)." ) where rnum >".$start;
|
---|
| 57 | return $sql;
|
---|
| 58 | }
|
---|
| 59 |
|
---|
| 60 | public function escape($data){
|
---|
| 61 | /*
|
---|
| 62 | as far as I can see the only way to escape data is by using oci_bind_by_name
|
---|
| 63 | while it is neat solution in common case, it conflicts with existing SQL building logic
|
---|
| 64 | fallback to simple escaping
|
---|
| 65 | */
|
---|
| 66 | return str_replace("'","''",$data);
|
---|
| 67 | }
|
---|
| 68 |
|
---|
| 69 | public function begin_transaction(){
|
---|
| 70 | //auto-start of transaction
|
---|
| 71 | }
|
---|
| 72 | public function commit_transaction(){
|
---|
| 73 | oci_commit($this->connection);
|
---|
| 74 | }
|
---|
| 75 | public function rollback_transaction(){
|
---|
| 76 | oci_rollback($this->connection);
|
---|
| 77 | }
|
---|
| 78 | }
|
---|
| 79 | ?> |
---|