Examples of org.apache.commons.collections15.map.ReferenceIdentityMap

Package org.apache.commons.collections15.map

Examples of org.apache.commons.collections15.map.ReferenceIdentityMap

org.apache.commons.collections15.Bag
A Map implementation that allows mappings to be removed by the garbage collector and matches keys and values based on == not equals().

When you construct a ReferenceIdentityMap, you can specify what kind of references are used to store the map's keys and values. If non-hard references are used, then the garbage collector can remove mappings if a key or value becomes unreachable, or if the JVM's memory is running low. For information on how the different reference types behave, see {@link Reference}.
Different types of references can be specified for keys and values. The default constructor uses hard keys and soft values, providing a memory-sensitive cache.
This map is similar to {@link org.apache.commons.collections15.map.ReferenceMap ReferenceMap}. It differs in that keys and values in this class are compared using ==.
This map will violate the detail of various Map and map view contracts. As a general rule, don't compare this map to other maps.
This {@link java.util.Map} implementation does not allow null elements.Attempting to add a null key or value to the map will raise a NullPointerException.
This implementation is not synchronized. You can use {@link java.util.Collections#synchronizedMap} toprovide synchronized access to a ReferenceIdentityMap. Remember that synchronization will not stop the garbage collecter removing entries.
All the available iterators can be reset back to the start by casting to ResettableIterator and calling reset(). @author Matt Hall, John Watkinson, Stephen Colebourne @version $Revision: 1.1 $ $Date: 2005/10/11 17:05:32 $ @see java.lang.ref.Reference @since Commons Collections 3.0 (previously in main package v2.1)

        buffer.addAll(Arrays.asList(getFullElements()));
        return UnmodifiableBuffer.decorate(buffer);
    }


    public Collection makeConfirmedCollection() {
        ArrayStack list = new ArrayStack();
        return list;
    }

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        ArrayStack list = new ArrayStack();
        return list;
    }


    public Collection makeConfirmedFullCollection() {
        ArrayStack list = new ArrayStack();
        list.addAll(Arrays.asList(getFullElements()));
        return list;
    }

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        buffer.addAll(Arrays.asList(getFullElements()));
        return SynchronizedBuffer.decorate(buffer);
    }


    public Collection makeConfirmedCollection() {
        ArrayStack list = new ArrayStack();
        return list;
    }

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        ArrayStack list = new ArrayStack();
        return list;
    }


    public Collection makeConfirmedFullCollection() {
        ArrayStack list = new ArrayStack();
        list.addAll(Arrays.asList(getFullElements()));
        return list;
    }

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    protected Buffer decorateBuffer(Buffer buffer, Predicate predicate) {
        return PredicatedBuffer.decorate(buffer, predicate);
    }


    public Collection makeCollection() {
        return decorateBuffer(new ArrayStack(), truePredicate);
    }

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    public Collection makeCollection() {
        return decorateBuffer(new ArrayStack(), truePredicate);
    }


    public Collection makeConfirmedCollection() {
        return new ArrayStack();
    }

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    public Collection makeConfirmedCollection() {
        return new ArrayStack();
    }


    public Collection makeConfirmedFullCollection() {
        ArrayStack list = new ArrayStack();
        list.addAll(java.util.Arrays.asList(getFullElements()));
        return list;
    }

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    }
    
    //------------------------------------------------------------
    
    public Buffer makeTestBuffer() {
        return decorateBuffer(new ArrayStack(), testPredicate);
    }

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        String[] testCaseName = {TestTransformedBuffer.class.getName()};
        junit.textui.TestRunner.main(testCaseName);
    }


    public void testTransformedBuffer() {
        Buffer buffer = TransformedBuffer.decorate(new ArrayStack(), TestTransformedCollection.STRING_TO_INTEGER_TRANSFORMER);
        assertEquals(0, buffer.size());
        Object[] els = new Object[]{"1", "3", "5", "7", "2", "4", "6"};
        for (int i = 0; i < els.length; i++) {
            buffer.add(els[i]);
            assertEquals(i + 1, buffer.size());

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    }
    
    //--------------------------------------------------------------------------


    public void testlegalAddRemove() {
        Bag bag = makeTestBag();
        assertEquals(0, bag.size());
        Object[] els = new Object[]{"1", "3", "5", "7", "2", "4", "1"};
        for (int i = 0; i < els.length; i++) {
            bag.add(els[i]);
            assertEquals(i + 1, bag.size());
            assertEquals(true, bag.contains(els[i]));
        }
        Set set = ((PredicatedBag) bag).uniqueSet();
        assertTrue("Unique set contains the first element", set.contains(els[0]));
        assertEquals(true, bag.remove(els[0]));
        set = ((PredicatedBag) bag).uniqueSet();
        assertTrue("Unique set now does not contain the first element", !set.contains(els[0]));
    }

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