    001    /*
    002     * Copyright (c) 2007-2014 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      }