001/*
002 * Copyright (c) 2007-2016 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.filter;
022
023import cascading.flow.FlowProcess;
024import cascading.operation.BaseOperation;
025import cascading.operation.Filter;
026import cascading.operation.FilterCall;
027
028/**
029 * Class FilterNotNull verifies that every value in the argument values {@link cascading.tuple.Tuple}
030 * is a null value. If a non-null value is encountered, the current Tuple will be filtered out.
031 *
032 * @see FilterNull
033 */
034public class FilterNotNull extends BaseOperation implements Filter
035  {
036  @Override
037  public boolean isRemove( FlowProcess flowProcess, FilterCall filterCall )
038    {
039    for( Object value : filterCall.getArguments().getTuple() )
040      {
041      if( value != null )
042        return true;
043      }
044
045    return false;
046    }
047  }