Imnplemented GetCountSortedByField function into pdo and mysql logstream class

src/chartgenerator.php

@@ -307,7 +307,7 @@ if ( !$content['error_occured'] )
 
 					// Setup Y-AXIS
 					$graph->yaxis->SetFont(FF_ARIAL,FS_NORMAL,8);
-					$graph->yaxis->scale->SetGrace(10); // So the value is readable
+					$graph->yaxis->scale->SetGrace(20); // So the value is readable
 					$graph->yaxis->SetLabelAlign('center','top');
 					$graph->yaxis->SetLabelFormat('%d');
 					$graph->yaxis->SetLabelSide(SIDE_RIGHT);

src/classes/logstreamdb.class.php

@@ -508,6 +508,46 @@ class LogStreamDB extends LogStream {
 	*/
 	public function GetCountSortedByField($szFieldId, $nFieldType, $nRecordLimit)
 	{
+		global $content, $dbmapping;
+
+		// Copy helper variables, this is just for better readability
+		$szTableType = $this->_logStreamConfigObj->DBTableType;
+
+		if ( isset($dbmapping[$szTableType][$szFieldId]) )
+		{
+			$myDBFieldName = $dbmapping[$szTableType][$szFieldId];
+
+			// Create SQL String now!
+			$szSql =	"SELECT " . 
+						$myDBFieldName . ", " . 
+						"count(" . $myDBFieldName . ") as TotalCount " . 
+						" FROM " . $this->_logStreamConfigObj->DBTableName . 
+						" GROUP BY " . $myDBFieldName . 
+						" ORDER BY TotalCount DESC" . 
+						" LIMIT " . $nRecordLimit;
+						
+
+			// Perform Database Query
+			$myquery = mysql_query($szSql, $this->_dbhandle);
+			if ( !$myquery ) 
+				return ERROR_DB_QUERYFAILED;
+			
+			// Initialize Array variable
+			$aResult = array();
+
+			// read data records
+			while ($myRow = mysql_fetch_array($myquery,  MYSQL_ASSOC))
+				$aResult[ $myRow[$myDBFieldName] ] = $myRow['TotalCount'];
+//print_r ($aResult);
+//exit;
+			// return finished array
+			return $aResult;
+		}
+		else
+		{
+			// return error code, field mapping not found
+			return ERROR_DB_DBFIELDNOTFOUND;
+		}
 	}
 
 

src/classes/logstreamdisk.class.php

@@ -613,17 +613,7 @@ class LogStreamDisk extends LogStream {
 							else
 								$aResult[ $content['LN_STATS_OTHERS'] ] = 1;
 						}
-
 					}
-					/*
-					if ( isset($aResult[ $logArray[$szFieldId] ][CHARTDATA_COUNT]) )
-						$aResult[ $logArray[$szFieldId] ][CHARTDATA_COUNT]++;
-					else
-					{
-						$aResult[ $logArray[$szFieldId] ][CHARTDATA_NAME] = $logArray[$szFieldId];
-						$aResult[ $logArray[$szFieldId] ][CHARTDATA_COUNT] = 1;
-					}
-					*/
 				}
 			} while ( ($ret = $this->ReadNext($uID, $logArray)) == SUCCESS );
 

src/classes/logstreampdo.class.php

@@ -518,6 +518,54 @@ class LogStreamPDO extends LogStream {
 	*/
 	public function GetCountSortedByField($szFieldId, $nFieldType, $nRecordLimit)
 	{
+		global $content, $dbmapping;
+
+		// Copy helper variables, this is just for better readability
+		$szTableType = $this->_logStreamConfigObj->DBTableType;
+
+		if ( isset($dbmapping[$szTableType][$szFieldId]) )
+		{
+			$myDBFieldName = $dbmapping[$szTableType][$szFieldId];
+
+			// Create SQL String now!
+			$szSql =	"SELECT " . 
+						$myDBFieldName . ", " . 
+						"count(" . $myDBFieldName . ") as TotalCount " . 
+						" FROM " . $this->_logStreamConfigObj->DBTableName . 
+						" GROUP BY " . $myDBFieldName . 
+						" ORDER BY TotalCount DESC"; 
+			// Append LIMIT in this case!
+			if			(	$this->_logStreamConfigObj->DBType == DB_MYSQL || 
+							$this->_logStreamConfigObj->DBType == DB_PGSQL )
+				$szSql .= " LIMIT " . $nRecordLimit; 
+
+			// Perform Database Query
+			$this->_myDBQuery = $this->_dbhandle->query($szSql);
+			if ( !$this->_myDBQuery ) 
+				return ERROR_DB_QUERYFAILED;
+
+			if ( $this->_myDBQuery->rowCount() == 0 )
+				return ERROR_NOMORERECORDS;
+
+			// Initialize Array variable
+			$aResult = array();
+
+			// read data records
+			$iCount = 0;
+			while ( ($myRow = $this->_myDBQuery->fetch(PDO::FETCH_ASSOC)) && $iCount < $nRecordLimit)
+			{
+				$aResult[ $myRow[$myDBFieldName] ] = $myRow['TotalCount'];
+				$iCount++;
+			}
+
+			// return finished array
+			return $aResult;
+		}
+		else
+		{
+			// return error code, field mapping not found
+			return ERROR_DB_DBFIELDNOTFOUND;
+		}
 	}
 
 

src/include/constants_errors.php

@@ -58,6 +58,7 @@ define('ERROR_DB_NOPROPERTIES', 13);
 define('ERROR_DB_INVALIDDBMAPPING', 14);
 define('ERROR_DB_INVALIDDBDRIVER', 16);
 define('ERROR_DB_TABLENOTFOUND', 17);
+define('ERROR_DB_DBFIELDNOTFOUND', 19);
 
 define('ERROR_MSG_NOMATCH', 18);