org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/internal/lttng/ui/views/statistics/model/StatisticsTreeRootFactory.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Yann N. Dauphin     (dhaemon@gmail.com)  - Implementation for stats
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.internal.lttng.ui.views.statistics.model;
  14
  15 import java.util.HashMap;
  16 import java.util.Map;
  17
  18 public class StatisticsTreeRootFactory {
  19
  20         // -----------------------------------------------------------------------
  21         // Data
  22         // -----------------------------------------------------------------------
  23
  24         private static final Map<String, StatisticsData> fTreeInstances = new HashMap<String, StatisticsData>();
  25
  26         // -----------------------------------------------------------------------
  27         // Methods
  28         // -----------------------------------------------------------------------
  29
  30         /**
  31          * Provide a statisticsTree instance per trace
  32          *
  33          * @return
  34          */
  35         public static StatisticsTreeNode getStatTreeRoot(String traceUniqueId) {
  36                 return getStatTree(traceUniqueId).getOrCreate(StatisticsData.ROOT);
  37         }
  38         public static StatisticsData getStatTree(String traceUniqueId) {
  39                 if(traceUniqueId == null)
  40                         return null;
  41
  42                 StatisticsData tree = fTreeInstances.get(traceUniqueId);
  43                 if(tree == null) {
  44                         tree = new KernelStatisticsData(traceUniqueId); // NOTE
  45                         fTreeInstances.put(traceUniqueId, tree);
  46                 }
  47                 return tree;
  48         }
  49         /**
  50          * @param traceUniqueId
  51          * @return
  52          */
  53         public static boolean containsTreeRoot(String traceUniqueId) {
  54                 return fTreeInstances.containsKey(traceUniqueId);
  55         }
  56
  57         /**
  58          * Remove previously registered statistics tree.
  59          * @param traceUniqueId
  60          */
  61         public static void removeStatTreeRoot(String traceUniqueId) {
  62                 if (traceUniqueId != null && fTreeInstances.containsKey(traceUniqueId)) {
  63                         fTreeInstances.remove(traceUniqueId);
  64                 }
  65         }
  66
  67         /**
  68          * Remove all tree and root instances
  69          */
  70         public static void removeAll() {
  71                 fTreeInstances.clear();
  72         }
  73 }