samoa-api/src/main/java/org/apache/samoa/moa/tasks/NullMonitor.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.samoa.moa.tasks;

/**
 * Class that represents a null monitor.
 * 
 * @author Richard Kirkby (rkirkby@cs.waikato.ac.nz)
 * @version $Revision: 7 $
 */
public class NullMonitor implements TaskMonitor {

  @Override
  public void setCurrentActivity(String activityDescription,
      double fracComplete) {
  }

  @Override
  public void setCurrentActivityDescription(String activity) {
  }

  @Override
  public void setCurrentActivityFractionComplete(double fracComplete) {
  }

  @Override
  public boolean taskShouldAbort() {
    return false;
  }

  @Override
  public String getCurrentActivityDescription() {
    return null;
  }

  @Override
  public double getCurrentActivityFractionComplete() {
    return -1.0;
  }

  @Override
  public boolean isPaused() {
    return false;
  }

  @Override
  public boolean isCancelled() {
    return false;
  }

  @Override
  public void requestCancel() {
  }

  @Override
  public void requestPause() {
  }

  @Override
  public void requestResume() {
  }

  @Override
  public Object getLatestResultPreview() {
    return null;
  }

  @Override
  public void requestResultPreview() {
  }

  @Override
  public boolean resultPreviewRequested() {
    return false;
  }

  @Override
  public void setLatestResultPreview(Object latestPreview) {
  }

  @Override
  public void requestResultPreview(ResultPreviewListener toInform) {
  }
}