<?php

require_once('rico/dbClass2.php');

class dbClass_postgresql
{
  var $lastQuery;
  function dbClass_postgresql($conn) { $this->conn=$conn; }
  function HasError() { return pg_last_error() !== ''; }
  function ErrorMsg() { return pg_last_error(); }
  function Close() { return pg_close(); }
  function FreeResult($rsLookUp) { return pg_free_result($rsLookUp); }
  function RunQuery($sqltext) { $this->lastQuery=$sqltext; return pg_query($sqltext); }
  function NumFields($rsMain) { return pg_num_fields($rsMain); }
  function NumRows($rsMain) { return pg_num_rows($rsMain); }
  function FieldType($rsMain,$i) { return pg_field_type($rsMain,$i); }
  function FetchRow($rsMain,&$result) { $result=pg_fetch_row($rsMain); return ($result==false) ? false : true; }
  function FetchAssoc($rsMain,&$result) { $result=pg_fetch_assoc($rsMain); return ($result==false) ? false : true; }
  function FetchArray($rsMain,&$result) { $result=pg_fetch_array($rsMain,MYSQL_NUM); return ($result==false) ? false : true; }
  function AffectedRows($rsMain) { return pg_affected_rows($this->conn); }
  function Seek($rsMain,$offset) { error_log("mysql_data_seek($rsMain,$offset);"); return false; }
  function RunParamQuery($query, $phs = array()) {
    foreach ($phs as $ph) {   // from php.net
      if ( isset($ph) ) {
        $ph = "'" . pg_escape_string($ph) . "'";
      } else {
        $ph = "NULL" ;
      }
      $query = substr_replace($query, $ph, strpos($query, '?'), 1);
    }
    $this->lastQuery=$query;
    return pg_query($query);
  }
  function GetColumnInfo($TableName) {
    $rsMain=$this->RunQuery("SHOW COLUMNS FROM ".$TableName);
    if (!$rsMain) return null;
    $arColumns=array();
    while($this->FetchAssoc($rsMain,$row)) {
      $colinfo=new dbColumn;
      $colinfo->IsPKey=($row["Key"]=="PRI");
      $colinfo->ColName=$row["Field"];
      $colinfo->ColType=$row["Type"];
      $colinfo->Nullable=($row["Null"]=="YES");
      if (preg_match("/\((\d+)\)/", $row["Type"], $matches))
        $colinfo->ColLength=$matches[1];
      else
        $colinfo->ColLength=0;
      $colinfo->Writeable=($row["Extra"] != 'auto_increment');
      array_push($arColumns, $colinfo);
    } 
    $this->FreeResult($rsMain);
    return $arColumns;
  }
  function GetTableList($TableType) {
    if ($TableType!='VIEW') $TableType='BASE TABLE';
    $rsMain=$this->RunQuery("SHOW FULL TABLES WHERE Table_type='".$TableType."'");
    if (!$rsMain) return null;
    $arTables=array();
    while($this->FetchRow($rsMain,$row)) {
      array_push($arTables, $row[0]);
    } 
    $this->FreeResult($rsMain);
    return $arTables;
  }
  function Concat($arStrings) {
    return "concat(".implode(",",$arStrings).")";
  }
  function Convert2Char($s) {
    return $s; // implicit conversion
  }
  function SqlDay($s) {
    return "dayofmonth(".$s.")";
  }
  function SqlMonth($s) {
    return "month(".$s.")";
  }
  function SqlYear($s) {
    return "year(".$s.")";
  }
  function CurrentTime() {
    return "LOCALTIMESTAMP";
  }
}

class dbClass extends dbClassRico
{

//********************************************************************************************************
// Attempts to connect to the Database. Returns true on success.
//********************************************************************************************************
  function PostgreSqlLogon($DefDB,$userid,$pw)
  {
    $this->Dialect="PostgreSQL";
    $this->dbDefault = $DefDB;

    $dsn = sprintf('host=%s dbname=%s user=%s password=%s',DBHOST,$DefDB,$userid,$pw);
    $this->dbMain = pg_connect($dsn);
    $this->db =& new dbClass_postgresql($this->dbMain);

    if ($this->dbMain === false && $this->CheckForError("opening connection")) return false;
    return true;
  }

}

?>