/ser-0.9.6/serweb-0.9.4/phplib/db_oci8.inc

<?php

      

/*

 * Oracle/OCI8 accessor based on Session Management for PHP3

 *

 * (C) Copyright 1999-2000 Stefan Sels phplib@sels.com

 *

 * based on db_oracle.inc by Luis Francisco Gonzalez Hernandez 

 * contains metadata() from db_oracle.inc 1.10

 *

 * $Id: db_oci8.inc,v 1.2 2004/08/09 12:59:35 kozlik Exp $

 *

 */ 



class DB_Sql {

  var $Debug    =  0;

  var $sqoe     =  1; // sqoe= show query on error



  var $Database = "";

  var $User     = "";

  var $Password = "";



  var $Link_ID    = 0;

  var $Record    = array();

  var $Row;

  var $Parse;

  var $Error     = "";



  /* public: constructor */

  function DB_Sql($query = "") {

      $this->query($query);

  }



  function connect() {

      if ( 0 == $this->Link_ID ) {

          if($this->Debug) {

              printf("<br>Connecting to $this->Database...<br>\n");

          }

          $this->Link_ID=OCIplogon

                ("$this->User","$this->Password","$this->Database");



          if (!$this->Link_ID) {

              $this->halt("Link-ID == false " .

                          "($this->Link_ID), OCILogon failed");

          } 

          

          if($this->Debug) {

              printf("<br>Obtained the Link_ID: $this->Link_ID<br>\n");

          }   

      }

  }

  

  function query($Query_String) {



    /* No empty queries, please, since PHP4 chokes on them. */

    if ($Query_String == "")

      /* The empty query string is passed on from the constructor,

       * when calling the class without a query, e.g. in situations

       * like these: '$db = new DB_Sql_Subclass;'

       */

      return 0;





      $this->connect();



       $this->Parse=OCIParse($this->Link_ID,$Query_String);

      if(!$this->Parse) {

           $this->Error=OCIError($this->Parse);

      } else { OCIExecute($this->Parse);

          $this->Error=OCIError($this->Parse); 

      }



      $this->Row=0;



      if($this->Debug) {

          printf("Debug: query = %s<br>\n", $Query_String);

      }

      

      if ($this->Error["code"]!=1403 && $this->Error["code"]!=0 && $this->sqoe) 

      echo "<BR><FONT color=red><B>".$this->Error["message"]."<BR>Query :\"$Query_String\"</B></FONT>";

      return $this->Parse;

  }

  

  function next_record() {

      if(0 == OCIFetchInto($this->Parse,$result,OCI_ASSOC+OCI_RETURN_NULLS)) {

          if ($this->Debug) {

            printf("<br>ID: %d,Rows: %d<br>\n",

              $this->Link_ID,$this->num_rows());

          }

          $this->Row        +=1;

          

          $errno=OCIError($this->Parse);

          if(1403 == $errno) { # 1043 means no more records found

              $this->Error="";

              $this->disconnect();

              $stat=0;

          } else {

              $this->Error=OCIError($this->Parse);

              if($this->Debug) {

                  printf("<br>Error: %s",

                  $this->Error["message"]);

              }

              $stat=0;

          }

      } else { 

          for($ix=1;$ix<=OCINumcols($this->Parse);$ix++) {

              $col=strtoupper(OCIColumnname($this->Parse,$ix));

              $colreturn=strtolower($col);

              $this->Record[ "$colreturn" ] = $result["$col"]; 

              if($this->Debug) echo"<b>[$col]</b>:".$result["$col"]."<br>\n";

          }

          $stat=1;

      }



  return $stat;

  }



  function seek($pos) {

      $this->Row=$pos;

  }



  function metadata($table,$full=false) {

      $count = 0;

      $id    = 0;

      $res   = array();

      

    /*

     * Due to compatibility problems with Table we changed the behavior

     * of metadata();

     * depending on $full, metadata returns the following values:

     *

     * - full is false (default):

     * $result[]:

     *   [0]["table"]  table name

     *   [0]["name"]   field name

     *   [0]["type"]   field type

     *   [0]["len"]    field length

     *   [0]["flags"]  field flags ("NOT NULL", "INDEX")

     *   [0]["format"] precision and scale of number (eg. "10,2") or empty

     *   [0]["index"]  name of index (if has one)

     *   [0]["chars"]  number of chars (if any char-type)

     *

     * - full is true

     * $result[]:

     *   ["num_fields"] number of metadata records

     *   [0]["table"]  table name

     *   [0]["name"]   field name

     *   [0]["type"]   field type

     *   [0]["len"]    field length

     *   [0]["flags"]  field flags ("NOT NULL", "INDEX")

     *   [0]["format"] precision and scale of number (eg. "10,2") or empty

     *   [0]["index"]  name of index (if has one)

     *   [0]["chars"]  number of chars (if any char-type)

     *   ["meta"][field name]  index of field named "field name"

     *   The last one is used, if you have a field name, but no index.

     *   Test:  if (isset($result['meta']['myfield'])) {} ...

     */



      $this->connect();



      ## This is a RIGHT OUTER JOIN: "(+)", if you want to see, what

      ## this query results try the following:

      ## $table = new Table; $db = new my_DB_Sql; # you have to make

      ##                                          # your own class

      ## $table->show_results($db->query(see query vvvvvv))

      ##

      $this->query("SELECT T.table_name,T.column_name,T.data_type,".

           "T.data_length,T.data_precision,T.data_scale,T.nullable,".

           "T.char_col_decl_length,I.index_name".

           " FROM ALL_TAB_COLUMNS T,ALL_IND_COLUMNS I".

           " WHERE T.column_name=I.column_name (+)".

           " AND T.table_name=I.table_name (+)".

           " AND T.table_name=UPPER('$table') ORDER BY T.column_id");

      

      $i=0;

      while ($this->next_record()) {

        $res[$i]["table"] =  $this->Record[table_name];

        $res[$i]["name"]  =  strtolower($this->Record[column_name]);

        $res[$i]["type"]  =  $this->Record[data_type];

        $res[$i]["len"]   =  $this->Record[data_length];

        if ($this->Record[index_name]) $res[$i]["flags"] = "INDEX ";

        $res[$i]["flags"] .= ( $this->Record[nullable] == 'N') ? '' : 'NOT NULL';

        $res[$i]["format"]=  (int)$this->Record[data_precision].",".

                             (int)$this->Record[data_scale];

        if ("0,0"==$res[$i]["format"]) $res[$i]["format"]='';

        $res[$i]["index"] =  $this->Record[index_name];

        $res[$i]["chars"] =  $this->Record[char_col_decl_length];

        if ($full) {

                $j=$res[$i]["name"];

                $res["meta"][$j] = $i;

                $res["meta"][strtoupper($j)] = $i;

        }

        if ($full) $res["meta"][$res[$i]["name"]] = $i;

        $i++;

      }

      if ($full) $res["num_fields"]=$i;

#      $this->disconnect();

      return $res;

  }





  function affected_rows() {

    return $this->num_rows();

  }



  function num_rows() {

    return OCIrowcount($this->Parse);

  }



  function num_fields() {

      return OCINumcols($this->Parse);

  }



  function nf() {

    return $this->num_rows();

  }



  function np() {

    print $this->num_rows();

  }



  function f($Name) {

    if (is_object($this->Record[$Name]))

    {

      return $this->Record[$Name]->load();

    } else

    {

      return $this->Record[$Name];

    }

  }



  function p($Name) {

    print $this->f($Name);

  }



  function nextid($seqname)

  {

    $this->connect();



    $Query_ID=@ociparse($this->Link_ID,"SELECT $seqname.NEXTVAL FROM DUAL");



    if(!@ociexecute($Query_ID))

    {

	$this->Error=@OCIError($Query_ID);

	if($this->Error["code"]==2289)

	{

	    $Query_ID=ociparse($this->Link_ID,"CREATE SEQUENCE $seqname");

	    if(!ociexecute($Query_ID))

	    {

		$this->Error=OCIError($Query_ID); 

		$this->halt("<BR> nextid() function - unable to create sequence<br>".$this->Error["message"]);

	    } else 

	     {

		$Query_ID=ociparse($this->Link_ID,"SELECT $seqname.NEXTVAL FROM DUAL");

		ociexecute($Query_ID);

	    }

	}

    }



    if (ocifetch($Query_ID))

    {

       $next_id = ociresult($Query_ID,"NEXTVAL");

    } else

    {

       $next_id = 0;

    }

    ocifreestatement($Query_ID);

    return $next_id;

  }



  function disconnect() {

      if($this->Debug) {

          printf("Disconnecting...<br>\n");

      }

      OCILogoff($this->Link_ID);

  }

  

  function halt($msg) {

    printf("</td></tr></table><b>Database error:</b> %s<br>\n", $msg);

    printf("<b>ORACLE Error</b>: %s<br>\n",

      $this->Error["message"]);

    die("Session halted.");

  }



  function lock($table, $mode = "write") {

    $this->connect();

    if ($mode == "write") {

      $Parse=OCIParse($this->Link_ID,"lock table $table in row exclusive mode");

      OCIExecute($Parse); 

    } else {

      $result = 1;

    }

    return $result;

  }

  

  function unlock() {

    return $this->query("commit");

  }



  function table_names() {

   $this->connect();

   $this->query("

   SELECT table_name,tablespace_name

     FROM user_tables");

   $i=0;

   while ($this->next_record())

   {

   $info[$i]["table_name"]     =$this->Record["table_name"];

   $info[$i]["tablespace_name"]=$this->Record["tablespace_name"];

   $i++;

   } 

  return $info;

  }



  function add_specialcharacters($query)

  {

  return str_replace("'","''",$query);

  }



  function split_specialcharacters($query)

  {

  return str_replace("''","'",$query);

  }

}

?>