samza-core/src/main/java/org/apache/samza/application/LegacyTaskApplication.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.samza.application;

import org.apache.samza.application.descriptors.TaskApplicationDescriptor;
import org.apache.samza.task.TaskFactoryUtil;

/**
 * Default {@link TaskApplication} for legacy applications w/ only task.class implemented
 */
public final class LegacyTaskApplication implements TaskApplication {
  private final String taskClassName;

  public LegacyTaskApplication(String taskClassName) {
    this.taskClassName = taskClassName;
  }

  @Override
  public void describe(TaskApplicationDescriptor appDescriptor) {
    appDescriptor.withTaskFactory(TaskFactoryUtil.getTaskFactory(taskClassName));
  }
}