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.assertion;
022    
023    import cascading.flow.FlowProcess;
024    import cascading.operation.ValueAssertion;
025    import cascading.operation.ValueAssertionCall;
026    import cascading.tuple.Tuple;
027    import cascading.tuple.TupleEntry;
028    
029    /** Class AssertNotNull asserts that every value in the argument values {@link Tuple} is not a null value. */
030    public class AssertNotNull extends BaseAssertion implements ValueAssertion
031      {
032      /** Constructor AssertNotNull creates a new AssertNotNull instance. */
033      public AssertNotNull()
034        {
035        super( "argument '%s' value was null, in tuple: %s" );
036        }
037    
038      @Override
039      public void doAssert( FlowProcess flowProcess, ValueAssertionCall assertionCall )
040        {
041        TupleEntry input = assertionCall.getArguments();
042        int pos = 0;
043    
044        for( Object value : input.getTuple() )
045          {
046          if( value == null )
047            fail( input.getFields().get( pos ), input.getTuple().print() );
048    
049          pos++;
050          }
051        }
052      }