001/*
002 * Copyright (c) 2007-2015 Concurrent, Inc. All Rights Reserved.
003 *
004 * Project and contact information: http://www.cascading.org/
005 *
006 * This file is part of the Cascading project.
007 *
008 * Licensed under the Apache License, Version 2.0 (the "License");
009 * you may not use this file except in compliance with the License.
010 * You may obtain a copy of the License at
011 *
012 *     http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing, software
015 * distributed under the License is distributed on an "AS IS" BASIS,
016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
017 * See the License for the specific language governing permissions and
018 * limitations under the License.
019 */
020
021package cascading.operation;
022
023import cascading.tuple.TupleEntry;
024
025/** Interface ValueAssertionCall provides access to the current {@link ValueAssertion} invocation arguments. */
026public interface ValueAssertionCall<C> extends OperationCall<C>
027  {
028  /**
029   * Returns {@link TupleEntry} of argument values.
030   * <p/>
031   * Note that the returned TupleEntry should not be cached (stored in a Collection), nor should the underlying Tuple
032   * instance. Where possible Cascading will re-use both TupleEntry and Tuple instances.
033   * <p/>
034   * To get a safe copy that can be cached, use {@link TupleEntry#getTupleCopy()}.
035   *
036   * @return TupleEntry
037   */
038  TupleEntry getArguments();
039  }