TxContext.java

/*
 * Copyright © 2014 Cask Data, Inc.
 *
 * Licensed 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 co.cask.cdap.data2.dataset2.tx;

import co.cask.cdap.api.dataset.Dataset;

import java.util.Map;

/**
 * Provides access to transactional resources, e.g. {@link Dataset}s.
 */
public abstract class TxContext {
  private final Map<String, ? extends Dataset> datasets;

  protected TxContext(Map<String, ? extends Dataset> datasets) {
    this.datasets = datasets;
  }

  protected <T extends Dataset> T getDataset(String name) {
    return (T) datasets.get(name);
  }

  Map<String, ? extends Dataset> getDatasets() {
    return datasets;
  }
}