1 files changed, 0 insertions, 123 deletions
diff --git a/lttng/org.eclipse.linuxtools.statesystem.core/src/org/eclipse/linuxtools/statesystem/core/backend/NullBackend.java b/lttng/org.eclipse.linuxtools.statesystem.core/src/org/eclipse/linuxtools/statesystem/core/backend/NullBackend.java
deleted file mode 100644
index 4afa7550d9..0000000000
--- a/lttng/org.eclipse.linuxtools.statesystem.core/src/org/eclipse/linuxtools/statesystem/core/backend/NullBackend.java
+++ /dev/null
@@ -1,123 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2013 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:
- *   Alexandre Montplaisir - Initial API and implementation
- *******************************************************************************/
-
-package org.eclipse.linuxtools.statesystem.core.backend;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.PrintWriter;
-import java.util.List;
-
-import org.eclipse.linuxtools.statesystem.core.interval.ITmfStateInterval;
-import org.eclipse.linuxtools.statesystem.core.statevalue.ITmfStateValue;
-
-/**
- * An implement of a state history back-end to simply discards *all* the
- * intervals it receives. Obviously, no queries can be done on it. It is useful
- * for using with a StateSystem on which you will only want to do "ongoing"
- * requests.
- *
- * @author Alexandre Montplaisir
- * @since 3.0
- */
-public class NullBackend implements IStateHistoryBackend {
-
-    /**
-     * Constructor
-     */
-    public NullBackend() {}
-
-    @Override
-    public long getStartTime() {
-        return 0;
-    }
-
-    @Override
-    public long getEndTime() {
-        return 0;
-    }
-
-    /**
-     * The interval will be discarded when using a null backend.
-     */
-    @Override
-    public void insertPastState(long stateStartTime, long stateEndTime,
-            int quark, ITmfStateValue value) {
-        /* The interval is always discarded. */
-    }
-
-    @Override
-    public void finishedBuilding(long endTime) {
-        /* Nothing to do */
-    }
-
-    @Override
-    public FileInputStream supplyAttributeTreeReader() {
-        return null;
-    }
-
-    @Override
-    public File supplyAttributeTreeWriterFile() {
-        return null;
-    }
-
-    @Override
-    public long supplyAttributeTreeWriterFilePosition() {
-        return -1;
-    }
-
-    @Override
-    public void removeFiles() {
-        /* Nothing to do */
-    }
-
-    @Override
-    public void dispose() {
-        /* Nothing to do */
-    }
-
-    /**
-     * Null back-ends cannot run queries. Nothing will be put in
-     * currentStateInfo.
-     */
-    @Override
-    public void doQuery(List<ITmfStateInterval> currentStateInfo, long t) {
-        /* Cannot do past queries */
-    }
-
-    /**
-     * Null back-ends cannot run queries. 'null' will be returned.
-     *
-     * @return Always returns null.
-     */
-    @Override
-    public ITmfStateInterval doSingularQuery(long t, int attributeQuark) {
-        /* Cannot do past queries */
-        return null;
-    }
-
-    /**
-     * Null back-ends cannot run queries.
-     *
-     * @return Always returns false.
-     */
-    @Override
-    public boolean checkValidTime(long t) {
-        /* Cannot do past queries */
-        return false;
-    }
-
-    @Override
-    public void debugPrint(PrintWriter writer) {
-        writer.println("Null history backend"); //$NON-NLS-1$
-    }
-}