content: /*
   * 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.beam.runners.core.triggers;
  
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.Lists;
  
  /** No-op {@link TriggerStateMachine} implementation for testing. */
  abstract class StubTriggerStateMachine extends TriggerStateMachine {
    /**
     * Create a stub {@link TriggerStateMachine} instance which returns the specified name on {@link
     * #toString()}.
     */
    static StubTriggerStateMachine named(final String name) {
      return new StubTriggerStateMachine() {
        @Override
        public String toString() {
          return name;
        }
      };
    }
  
    protected StubTriggerStateMachine() {
      super(Lists.newArrayList());
    }
  
    @Override
    public void onFire(TriggerContext context) throws Exception {}
  
    @Override
    public void prefetchOnElement(PrefetchContext c) {}
  
    @Override
    public void onElement(OnElementContext c) throws Exception {}
  
    @Override
    public void prefetchOnMerge(MergingPrefetchContext c) {}
  
    @Override
    public void onMerge(OnMergeContext c) throws Exception {}
  
    @Override
    public void prefetchShouldFire(PrefetchContext c) {}
  
    @Override
    public boolean shouldFire(TriggerContext context) throws Exception {
      return false;
    }
  }
  