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 java.beans.ConstructorProperties;
024    
025    import cascading.flow.FlowProcess;
026    import cascading.management.annotation.Property;
027    import cascading.management.annotation.PropertyDescription;
028    import cascading.management.annotation.Visibility;
029    import cascading.operation.ValueAssertion;
030    import cascading.operation.ValueAssertionCall;
031    import cascading.tuple.TupleEntry;
032    
033    /**
034     * Class AssertSizeLessThan asserts that the current {@link cascading.tuple.Tuple} in the stream has a size less than (<) the given size.
035     * </p>
036     * On evaluation, {@link cascading.tuple.Tuple#size()} is called (note Tuples may hold {@code null} values).
037     */
038    public class AssertSizeLessThan extends BaseAssertion implements ValueAssertion
039      {
040      /** Field size */
041      private final int size;
042    
043      /**
044       * Constructor AssertSizeLessThan creates a new AssertSizeLessThan instance.
045       *
046       * @param size of type int
047       */
048      @ConstructorProperties({"size"})
049      public AssertSizeLessThan( int size )
050        {
051        super( "tuple size %s, is more than or equal to: %s, in tuple: %s" );
052        this.size = size;
053        }
054    
055      @Property(name = "size", visibility = Visibility.PRIVATE)
056      @PropertyDescription("The maximum tuple size.")
057      public int getSize()
058        {
059        return size;
060        }
061    
062      @Override
063      public void doAssert( FlowProcess flowProcess, ValueAssertionCall assertionCall )
064        {
065        TupleEntry input = assertionCall.getArguments();
066    
067        if( input.size() >= size )
068          fail( input.size(), size, input.getTuple().print() );
069        }
070    
071      @Override
072      public boolean equals( Object object )
073        {
074        if( this == object )
075          return true;
076        if( !( object instanceof AssertSizeLessThan ) )
077          return false;
078        if( !super.equals( object ) )
079          return false;
080    
081        AssertSizeLessThan that = (AssertSizeLessThan) object;
082    
083        if( size != that.size )
084          return false;
085    
086        return true;
087        }
088    
089      @Override
090      public int hashCode()
091        {
092        int result = super.hashCode();
093        result = 31 * result + size;
094        return result;
095        }
096      }