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 java.beans.ConstructorProperties;
024    import java.util.Collection;
025    
026    import cascading.flow.FlowProcess;
027    import cascading.operation.ValueAssertion;
028    import cascading.operation.ValueAssertionCall;
029    import cascading.tuple.Tuple;
030    import cascading.tuple.Tuples;
031    
032    /**
033     * Class AssertEquals asserts the number of constructor values is equal
034     * to the number of argument values {@link Tuple} and each constructor value is {@code .equals()} to its corresponding argument value.
035     */
036    public class AssertEquals extends BaseAssertion implements ValueAssertion
037      {
038      /** Field values */
039      private Tuple values;
040    
041      /**
042       * Constructor AssertEquals creates a new AssertEquals instance.
043       *
044       * @param values of type Object...
045       */
046      @ConstructorProperties({"values"})
047      public AssertEquals( Object... values )
048        {
049        // set to 1 if null, will fail immediately afterwards
050        super( values == null ? 1 : values.length, "argument tuple: %s was not equal to values: %s" );
051    
052        if( values == null )
053          throw new IllegalArgumentException( "values may not be null" );
054    
055        if( values.length == 0 )
056          throw new IllegalArgumentException( "values may not be empty" );
057    
058        this.values = new Tuple( values );
059        }
060    
061      public Collection getValues()
062        {
063        return Tuples.asCollection( values );
064        }
065    
066      @Override
067      public void doAssert( FlowProcess flowProcess, ValueAssertionCall assertionCall )
068        {
069        Tuple tuple = assertionCall.getArguments().getTuple();
070    
071        if( !tuple.equals( values ) )
072          fail( tuple.print(), values.print() );
073        }
074    
075      @Override
076      public boolean equals( Object object )
077        {
078        if( this == object )
079          return true;
080        if( !( object instanceof AssertEquals ) )
081          return false;
082        if( !super.equals( object ) )
083          return false;
084    
085        AssertEquals that = (AssertEquals) object;
086    
087        if( values != null ? !values.equals( that.values ) : that.values != null )
088          return false;
089    
090        return true;
091        }
092    
093      @Override
094      public int hashCode()
095        {
096        int result = super.hashCode();
097        result = 31 * result + ( values != null ? values.hashCode() : 0 );
098        return result;
099        }
100      }