ctf: move getStreams to an iterable.

This is an example of how to break the internals access.

Keep separate the "get/set/iterate" over an internals data-structure.

Change-Id: Id79b4eeedd3636de142d3317cbb1b1ae6fe2f50a
Signed-off-by: Etienne Bergeron <etienne.bergeron@gmail.com>
Reviewed-on: https://git.eclipse.org/r/19933
Tested-by: Hudson CI
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
IP-Clean: Matthew Khouzam <matthew.khouzam@ericsson.com>

3 files changed, 7 insertions, 20 deletions

diff --git a/lttng/org.eclipse.linuxtools.ctf.core.tests/src/org/eclipse/linuxtools/ctf/core/tests/trace/CTFTraceTest.java b/lttng/org.eclipse.linuxtools.ctf.core.tests/src/org/eclipse/linuxtools/ctf/core/tests/trace/CTFTraceTest.java
index 04bd2eef52..b69ce43e20 100644
--- a/lttng/org.eclipse.linuxtools.ctf.core.tests/src/org/eclipse/linuxtools/ctf/core/tests/trace/CTFTraceTest.java
+++ b/lttng/org.eclipse.linuxtools.ctf.core.tests/src/org/eclipse/linuxtools/ctf/core/tests/trace/CTFTraceTest.java
@@ -23,7 +23,6 @@ import static org.junit.Assume.assumeTrue;
 
 import java.io.File;
 import java.nio.ByteOrder;
-import java.util.Map;
 import java.util.UUID;
 
 import org.eclipse.linuxtools.ctf.core.event.CTFClock;
@@ -193,15 +192,6 @@ public class CTFTraceTest {
     }
 
     /**
-     * Run the Map<Long, Stream> getStreams() method test.
-     */
-    @Test
-    public void testGetStreams() {
-        Map<Long, Stream> result = fixture.getStreams();
-        assertNotNull(result);
-    }
-
-    /**
      * Run the File getTraceDirectory() method test.
      */
     @Test
diff --git a/lttng/org.eclipse.linuxtools.ctf.core/src/org/eclipse/linuxtools/ctf/core/trace/CTFTrace.java b/lttng/org.eclipse.linuxtools.ctf.core/src/org/eclipse/linuxtools/ctf/core/trace/CTFTrace.java
index 9f6af8c6d0..c97e1b61cc 100644
--- a/lttng/org.eclipse.linuxtools.ctf.core/src/org/eclipse/linuxtools/ctf/core/trace/CTFTrace.java
+++ b/lttng/org.eclipse.linuxtools.ctf.core/src/org/eclipse/linuxtools/ctf/core/trace/CTFTrace.java
@@ -200,8 +200,8 @@ public class CTFTrace implements IDefinitionScope {
         }
 
         /* Create their index */
-        for (Map.Entry<Long, Stream> stream : streams.entrySet()) {
-            Set<StreamInput> inputs = stream.getValue().getStreamInputs();
+        for (Stream stream : getStreams()) {
+            Set<StreamInput> inputs = stream.getStreamInputs();
             for (StreamInput s : inputs) {
                 /*
                  * Copy the events
@@ -460,12 +460,12 @@ public class CTFTrace implements IDefinitionScope {
     }
 
     /**
-     * Method getStreams get all the streams in a map format.
+     * Get all the streams as an iterable.
      *
-     * @return Map<Long,Stream> a map of all the streams.
+     * @return Iterable<Stream> an iterable over streams.
      */
-    public Map<Long, Stream> getStreams() {
-        return streams;
+    public Iterable<Stream> getStreams() {
+        return streams.values();
     }
 
     /**
diff --git a/lttng/org.eclipse.linuxtools.ctf.core/src/org/eclipse/linuxtools/ctf/core/trace/CTFTraceReader.java b/lttng/org.eclipse.linuxtools.ctf.core/src/org/eclipse/linuxtools/ctf/core/trace/CTFTraceReader.java
index 6110129400..d8e24cd95f 100644
--- a/lttng/org.eclipse.linuxtools.ctf.core/src/org/eclipse/linuxtools/ctf/core/trace/CTFTraceReader.java
+++ b/lttng/org.eclipse.linuxtools.ctf.core/src/org/eclipse/linuxtools/ctf/core/trace/CTFTraceReader.java
@@ -14,7 +14,6 @@
 package org.eclipse.linuxtools.ctf.core.trace;
 
 import java.util.ArrayList;
-import java.util.Collection;
 import java.util.List;
 import java.util.PriorityQueue;
 import java.util.Set;
@@ -176,12 +175,10 @@ public class CTFTraceReader {
      *             if an error occurs
      */
     private void createStreamInputReaders() throws CTFReaderException {
-        Collection<Stream> streams = this.trace.getStreams().values();
-
         /*
          * For each stream.
          */
-        for (Stream stream : streams) {
+        for (Stream stream : this.trace.getStreams()) {
             Set<StreamInput> streamInputs = stream.getStreamInputs();
 
             /*