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    
021    package cascading.operation.filter;
022    
023    import cascading.flow.FlowProcess;
024    import cascading.operation.BaseOperation;
025    import cascading.operation.Filter;
026    import 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     */
034    public 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      }