1 files changed, 112 insertions, 0 deletions
diff --git a/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/statistics/model/StatisticsTreeNode.java b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/statistics/model/StatisticsTreeNode.java
new file mode 100644
index 0000000000..042dc758b3
--- /dev/null
+++ b/lttng/org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/statistics/model/StatisticsTreeNode.java
@@ -0,0 +1,112 @@
+/*******************************************************************************
+ * Copyright (c) 2009 Ericsson
+ * 
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License v1.0 which
+ * accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ *   Yann N. Dauphin     (dhaemon@gmail.com)  - Implementation for stats
+ *   Francois Godin (copelnug@gmail.com)  - Re-design for new stats structure
+ *******************************************************************************/
+
+package org.eclipse.linuxtools.lttng.ui.views.statistics.model;
+
+import java.util.Collection;
+
+/**
+ * <h4>A tree where nodes can be accessed efficiently using paths.</h4>
+ * 
+ * <p>It works like file systems. Each node is identified by a key. A path is an array ({@link FixedArray}) of String. The elements of the array represent the path from the root to this node.</p>
+ */
+public class StatisticsTreeNode {
+	/**
+	 * <h4>Value of the node.</h4>
+	 */
+	private Statistics fValue;
+	/**
+	 * <h4>Path of the node.</h4>
+	 */
+	private FixedArray<String> fPath;
+	/**
+	 * <h4>Corresponding StatisticsData.</h4>
+	 */
+	private StatisticsData fNodes;
+	/**
+	 * <h4>Constructor.</h4>
+	 * @param path Path to the node.
+	 * @param nodes Corresponding StatisticsData.
+	 */
+	public StatisticsTreeNode(final FixedArray<String> path, StatisticsData nodes) {
+		fPath = path;
+		fNodes = nodes;
+		fValue = new Statistics();
+	}
+	/**
+	 * <h4>Test if a node contain the specified child.</h4>
+	 * @param key Name of the child.
+	 * @return true: if child with given key is present, false: if no child exists with given key name
+	 */
+	public boolean containsChild(String key) {
+		if(StatisticsData.ROOT.equals(fPath))
+			return fNodes.get(new FixedArray<String>(key)) != null;
+		return (fNodes.get(fPath.append(key)) != null);
+	}
+	/**
+	 * <h4>Get the children of this node.</h4>
+	 * @return Direct children of this node.
+	 */
+	public Collection<StatisticsTreeNode> getChildren() {
+		return fNodes.getChildren(fPath);
+	}
+	/**
+	 * <h4>Get the key for this node.</h4>
+	 * @return Key associated with this node.
+	 */
+	public String getKey() {
+		return fPath.get(fPath.size() - 1);
+	}
+	/**
+	 * <h4>Get the number of children this node have.</h4>
+	 * @return Number of direct children of this node.
+	 */
+	public int getNbChildren() {
+		return fNodes.getChildren(fPath).size();
+	}
+	/**
+	 * <h4>Return the parent node.</h4>
+	 * @return Parent node.
+	 */
+	public StatisticsTreeNode getParent() {
+		return fNodes.getParent(fPath);
+	}
+	/**
+	 * <h4>Get the path of the node.</h4>
+	 * @return The path of the node.
+	 */
+	public FixedArray<String> getPath() {
+		return fPath;
+	}
+	/**
+	 * <h4>Get the value of this node.</h4>
+	 * @return Value associated with this node.
+	 */
+	public Statistics getValue() {
+		return fValue;
+	}
+	/**
+	 * <h4>Indicate if the node have children.</h4>
+	 * @return True if the node has children.
+	 */
+	public boolean hasChildren() {
+		return !fNodes.getChildren(fPath).isEmpty();
+	}
+	/**
+	 * <h4>Start from creation time i.e. keep key and parent but new statistics and no children.</h4>
+	 */
+	public void reset() {
+		fValue = new Statistics();
+		fNodes.reset(fPath);
+	}
+}
+\ No newline at end of file