Examples of org.apache.commons.collections.bag.HashBag

Package org.apache.commons.collections.bag

Examples of org.apache.commons.collections.bag.HashBag

org.apache.commons.collections.bag.HashBag
Implements Bag, using a HashMap to provide the data storage. This is the standard implementation of a bag.
A Bag stores each object in the collection together with a count of occurrences. Extra methods on the interface allow multiple copies of an object to be added or removed at once. It is important to read the interface javadoc carefully as several methods violate the Collection interface specification. @since Commons Collections 3.0 (previously in main package v2.0) @version $Revision: 1.8 $ $Date: 2004/02/18 00:56:25 $ @author Chuck Burdick @author Stephen Colebourne

            // expected
        }  
    }
    
    public void testTypedBag() {
        Bag bag = BagUtils.typedBag(new HashBag(), stringClass);      
        assertTrue("Returned object should be a TypedBag.",
            bag instanceof PredicatedBag);
        try {
            bag = BagUtils.typedBag(null, stringClass);
            fail("Expecting IllegalArgumentException for null bag.");
        } catch (IllegalArgumentException ex) {
            // expected
        } 
        try {
            bag = BagUtils.typedBag(new HashBag(), null);
            fail("Expecting IllegalArgumentException for null type.");
        } catch (IllegalArgumentException ex) {
            // expected
        }  
    }

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            // expected
        }  
    }
    
     public void testTransformedBag() {
        Bag bag = BagUtils.transformedBag(new HashBag(), nopTransformer);      
        assertTrue("Returned object should be an TransformedBag.",
            bag instanceof TransformedBag);
        try {
            bag = BagUtils.transformedBag(null, nopTransformer);      
            fail("Expecting IllegalArgumentException for null bag.");
        } catch (IllegalArgumentException ex) {
            // expected
        } 
        try {
            bag = BagUtils.transformedBag(new HashBag(), null);  
            fail("Expecting IllegalArgumentException for null transformer.");
        } catch (IllegalArgumentException ex) {
            // expected
        }  
    }

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            Set set = new HashSet();
            set.addAll((Set) col);
            return set;
        }
        else if (col instanceof Bag) {
            Bag bag = new HashBag();
            bag.addAll((Bag) col);
            return bag;
        }
        else {
            throw new IllegalArgumentException("Cannot clone collections of type: " + col.getClass().getName());
        }

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        // Instantiate members for the other select()
        TypeExpr[] typePieces = gemType.getTypePieces();
        TypeExpr outputType = typePieces[typePieces.length - 1];


        Bag remainingInputTypes = new HashBag(Arrays.asList(typePieces));
        remainingInputTypes.remove(outputType, 1);


        return select(new ArrayList<TypeExpr>(), remainingInputTypes, outputType);
    }

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        // Now check if we should call ourselves recursively..
        if (numInputsToTry < filterInputTypes.length) {


            // Create a set that represents the remaining input types that will be passed down to the next level.
            Bag remainingInputTypesArg = new HashBag(remainingInputTypes);


            for (Iterator it = remainingInputTypes.iterator(); it.hasNext(); ) {


                TypeExpr nextType = (TypeExpr)it.next();


                inputTypesToTry.add(nextType);
                remainingInputTypesArg.remove(nextType, 1);


                // recursive call.
                if (select(inputTypesToTry, remainingInputTypesArg, outputTypeToTry)) {
                    return true;
                }


                inputTypesToTry.remove(numInputsToTry);
                remainingInputTypesArg.add(nextType);
            }


            // none of the matching succeeded.
            return false;

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  protected Metrics getMetricKey() {
    return Metrics.COMPLEXITY_CLASSES_COUNT_DISTRIBUTION;
  }
  
  public void execute(Module module, List<Module> directSubmodules) {
    HashBag countByRange = new HashBag();


    if (directSubmodules == null || directSubmodules.isEmpty()) {
      for (MeasureKey key : module.getMeasureKeys()) {
        if (key.getFile() != null && key.getMetric().equals(getMetric(Metrics.CYCLOMATIC_COMPLEXITY))) {
          int ccn = module.getMeasureValue(key).intValue();
          countByRange.add(getComplexityRange(ccn));
        }
      }
    } else {
      for (Module submodule : directSubmodules) {
        for (MeasureKey key : submodule.getMeasureKeys()) {
          if (key.getFile() == null && key.getMetric().equals(getMetric())) {
            ProjectMeasure measure = (ProjectMeasure) submodule.getMeasure(key);
            int range = Integer.parseInt(measure.getSubkey());
            countByRange.add(range, measure.getValue().intValue());
          }
        }
      }
    }

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        assertEquals(0, CollectionUtils.cardinality("B", set));
        assertEquals(1, CollectionUtils.cardinality("C", set));
        assertEquals(0, CollectionUtils.cardinality("D", set));
        assertEquals(1, CollectionUtils.cardinality("E", set));


        Bag bag = new HashBag();
        bag.add("A", 3);
        bag.add("C");
        bag.add("E");
        bag.add("E");
        assertEquals(3, CollectionUtils.cardinality("A", bag));
        assertEquals(0, CollectionUtils.cardinality("B", bag));
        assertEquals(1, CollectionUtils.cardinality("C", bag));
        assertEquals(0, CollectionUtils.cardinality("D", bag));
        assertEquals(2, CollectionUtils.cardinality("E", bag));

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        // Enumeration, non-existent entry -- "dead" enumerator returned
        test = CollectionUtils.index(en,3);
        assertTrue(test.equals(en) && !en.hasMoreElements());
        
        // Collection, entry exists
        Bag bag = new HashBag();
        bag.add("element", 1);
        test = CollectionUtils.index(bag, 0);
        assertTrue(test.equals("element"));
        
        // Collection, non-existent entry -- "dead" iterator returned
        test = CollectionUtils.index(bag, 2);

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            assertTrue(!en.hasMoreElements());
        }
        
        {
            // Collection, entry exists
            Bag bag = new HashBag();
            bag.add("element", 1);
            assertEquals("element",CollectionUtils.get(bag, 0));
        
            // Collection, non-existent entry
            try {
                CollectionUtils.get(bag, 1);

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    protected Transformer nopTransformer = TransformerUtils.nopTransformer();
    
    //----------------------------------------------------------------------
    
    public void testSynchronizedBag() {
        Bag bag = BagUtils.synchronizedBag(new HashBag());
        assertTrue("Returned object should be a SynchronizedBag.",
            bag instanceof SynchronizedBag);
        try {
            bag = BagUtils.synchronizedBag(null);
            fail("Expecting IllegalArgumentException for null bag.");

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