SingleTupleCollection.java

/**
 * Copyright 2013-2014 Recruit Technologies Co., Ltd. and contributors
 * (see CONTRIBUTORS.md)
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.  A copy of the
 * License is distributed with this work in the LICENSE.md file.  You may
 * also obtain a copy of the License from
 *
 *     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.gennai.gungnir.topology.operator.tuplejoin;

import static org.gennai.gungnir.GungnirConst.*;

import java.util.List;

import org.gennai.gungnir.tuple.FieldAccessor;
import org.gennai.gungnir.tuple.TupleAccessor;

public class SingleTupleCollection extends BaseTupleCollection {

  private static final long serialVersionUID = SERIAL_VERSION_UID;

  private TupleAccessor fromTuple;

  public SingleTupleCollection(TupleAccessor fromTuple, List<FieldAccessor> fields) {
    super(fields);
    setFromTuple(fromTuple);
    setOutputFields(fields);
  }

  private SingleTupleCollection(SingleTupleCollection c) {
    super(c);
    this.fromTuple = c.fromTuple;
  }

  public void setFromTuple(TupleAccessor fromTuple) {
    this.fromTuple = fromTuple;
  }

  @Override
  public TupleAccessor getFromTuple() {
    return fromTuple;
  }

  @Override
  public String toString() {
    return getFromTuple().toString();
  }

  @Override
  public SingleTupleCollection clone() {
    return new SingleTupleCollection(this);
  }
}