Rename xxx.lttng to xxx.lttng.core

[deliverable/tracecompass.git] / org.eclipse.linuxtools.tmf / src / org / eclipse / linuxtools / tmf / trace / TmfContext.java

diff --git a/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/trace/TmfContext.java b/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/trace/TmfContext.java
index d495182b474cda620ce45f779bb89d23d59b5975..4b93029f8ad98c6954e1a0e9929398d9dc67bc51 100644 (file)
--- a/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/trace/TmfContext.java
+++ b/org.eclipse.linuxtools.tmf/src/org/eclipse/linuxtools/tmf/trace/TmfContext.java
@@ -12,78 +12,119 @@
 
 package org.eclipse.linuxtools.tmf.trace;
 
-
 /**
  * <b><u>TmfContext</u></b>
  * <p>
  * Trace context structure. It ties a trace location to an event rank. The
  * context should be enough to restore the trace state so the corresponding
  * event can be read.
- * <p>
- * Used to handle conflicting, concurrent accesses to the trace. 
  */
-public class TmfContext implements ITmfContext {
-
-       private ITmfLocation<?> fLocation;
-       private long fRank;
-       
-       // ------------------------------------------------------------------------
-       // Constructors
-       // ------------------------------------------------------------------------
-
-       public TmfContext(ITmfLocation<?> loc, long rank) {
-               fLocation = loc;
-               fRank = rank;
-       }
-
-       public TmfContext(ITmfLocation<?> location) {
-               this(location, 0);
-       }
-
-       public TmfContext(TmfContext other) {
-               this(other.fLocation, other.fRank);
-       }
-
-       public TmfContext() {
-               this(null, 0);
-       }
-
-       // ------------------------------------------------------------------------
-       // Cloneable
-       // ------------------------------------------------------------------------
-
-       @Override
-       public TmfContext clone() {
-               try {
-                       return (TmfContext) super.clone();
-               } catch (CloneNotSupportedException e) {
-                       e.printStackTrace();
-               }
-               return null;
-       }
-
-       // ------------------------------------------------------------------------
-       // ITmfContext
-       // ------------------------------------------------------------------------
-
-       public void setLocation(ITmfLocation<?> location) {
-               fLocation = location;
-       }
-
-       public ITmfLocation<?> getLocation() {
-               return fLocation;
-       }
-
-       public void setRank(long rank) {
-               fRank = rank;
-       }
-
-       public long getRank() {
-               return fRank;
-       }
-
-       public void updateRank(int delta) {
-               fRank += delta;
-       }
+public class TmfContext implements ITmfContext, Cloneable {
+
+    private ITmfLocation<? extends Comparable<?>> fLocation;
+    private long fRank;
+
+    // ------------------------------------------------------------------------
+    // Constructors
+    // ------------------------------------------------------------------------
+
+    public TmfContext(ITmfLocation<? extends Comparable<?>> loc, long rank) {
+        fLocation = loc;
+        fRank = rank;
+    }
+
+    public TmfContext(ITmfLocation<? extends Comparable<?>> location) {
+        this(location, UNKNOWN_RANK);
+    }
+
+    public TmfContext(TmfContext other) {
+        this(other.fLocation, other.fRank);
+    }
+
+    public TmfContext() {
+        this(null, UNKNOWN_RANK);
+    }
+
+    // ------------------------------------------------------------------------
+    // ITmfContext
+    // ------------------------------------------------------------------------
+
+    @Override
+    public void dispose() {
+        // override if necessary
+    }
+
+    @Override
+    public void setLocation(ITmfLocation<? extends Comparable<?>> location) {
+        fLocation = location;
+    }
+
+    @Override
+    public ITmfLocation<? extends Comparable<?>> getLocation() {
+        return fLocation;
+    }
+
+    @Override
+    public void setRank(long rank) {
+        fRank = rank;
+    }
+
+    @Override
+    public long getRank() {
+        return fRank;
+    }
+
+    @Override
+    public void updateRank(int delta) {
+        if (isValidRank())
+            fRank += delta;
+    }
+
+    @Override
+    public boolean isValidRank() {
+        return fRank != UNKNOWN_RANK;
+    }
+
+    // ------------------------------------------------------------------------
+    // Object
+    // ------------------------------------------------------------------------
+
+    @Override
+    public int hashCode() {
+        int result = 17;
+        result = 37 * result + fLocation.hashCode();
+        result = 37 * result + (int) (fRank ^ (fRank >>> 32));
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other == this) {
+            return true;
+        }
+        if (!(other instanceof TmfContext)) {
+            return false;
+        }
+        TmfContext o = (TmfContext) other;
+        return fLocation.equals(o.fLocation) && (fRank == o.fRank);
+    }
+
+    @Override
+    @SuppressWarnings("nls")
+    public String toString() {
+        return "[TmfContext(" + fLocation.toString() + "," + fRank + ")]";
+    }
+
+    @Override
+    public TmfContext clone() {
+        TmfContext clone = null;
+        try {
+            clone = (TmfContext) super.clone();
+            clone.fLocation = fLocation.clone();
+            clone.fRank = fRank;
+        } catch (CloneNotSupportedException e) {
+        }
+        return clone;
+    }
 
 }