Examples of org.apache.commons.collections15.FunctorException

Package org.apache.commons.collections15

Examples of org.apache.commons.collections15.FunctorException

org.apache.commons.collections15.FunctorException
Runtime exception thrown from functors. If required, a root cause error can be wrapped within this one. @author Matt Hall, John Watkinson, Stephen Colebourne @version $Revision: 1.1 $ $Date: 2005/10/11 17:05:19 $ @since Commons Collections 3.0

     * complete. The remaining thread should complete after the
     * addition of a second singleton.
     */
    public void testBlockedRemoveWithAddAll1() {


        Buffer blockingBuffer = BlockingBuffer.decorate(new MyBuffer());
        Object obj = new Object();
        
        // run methods will remove and compare -- must wait for addAll
        Thread thread1 = new ReadThread(blockingBuffer, obj, null, "remove");
        Thread thread2 = new ReadThread(blockingBuffer, obj, null, "remove");
        thread1.start();
        thread2.start();
        
        // give hungry read threads ample time to hang
        delay();


        blockingBuffer.addAll(Collections.singleton(obj));
        
        // allow notified threads to complete 
        delay();
        
        // There should be one thread waiting.
        assertTrue("There is one thread waiting", thread1.isAlive() ^ thread2.isAlive());


        blockingBuffer.addAll(Collections.singleton(obj));
        
        // allow notified thread to complete 
        delay();


        // There should not be any threads waiting.

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     * threads should complete. Each thread should have read a
     * different object.
     */
    public void testBlockedRemoveWithAddAll2() {


        Buffer blockingBuffer = BlockingBuffer.decorate(new MyBuffer());
        Object obj1 = new Object();
        Object obj2 = new Object();


        Set objs = Collections.synchronizedSet(new HashSet());
        objs.add(obj1);
        objs.add(obj2);


        // run methods will remove and compare -- must wait for addAll
        Thread thread1 = new ReadThread(blockingBuffer, objs, "remove");
        Thread thread2 = new ReadThread(blockingBuffer, objs, "remove");
        thread1.start();
        thread2.start();
        
        // give hungry read threads ample time to hang
        delay();


        blockingBuffer.addAll(objs);
        
        // allow notified threads to complete 
        delay();


        assertEquals("Both objects were removed", 0, objs.size());

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    /**
     * Tests interrupted remove.
     */
    public void testInterruptedRemove() {


        Buffer blockingBuffer = BlockingBuffer.decorate(new MyBuffer());
        Object obj = new Object();
        
        // spawn a read thread to wait on the empty buffer
        ArrayList exceptionList = new ArrayList();
        Thread thread = new ReadThread(blockingBuffer, obj, exceptionList, "remove");

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    public Collection makeCollection() {
        return UnmodifiableBuffer.decorate(new UnboundedFifoBuffer());
    }


    public Collection makeFullCollection() {
        Buffer buffer = new UnboundedFifoBuffer();
        buffer.addAll(Arrays.asList(getFullElements()));
        return UnmodifiableBuffer.decorate(buffer);
    }

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        return false;
    }


    public void testBufferRemove() {
        resetEmpty();
        Buffer buffer = (Buffer) collection;
        try {
            buffer.remove();
            fail();
        } catch (UnsupportedOperationException ex) {
        }
    }

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    protected static class MyBuffer extends LinkedList implements Buffer {


        public Object get() {
            if (isEmpty())
                throw new BufferUnderflowException();
            return get(0);
        }

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            return get(0);
        }


        public Object remove() {
            if (isEmpty())
                throw new BufferUnderflowException();
            return remove(0);
        }

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            try {
                return (T) iCloneMethod.invoke(iPrototype, null);


            } catch (IllegalAccessException ex) {
                throw new FunctorException("PrototypeCloneFactory: Clone method must be public", ex);
            } catch (InvocationTargetException ex) {
                throw new FunctorException("PrototypeCloneFactory: Clone method threw an exception", ex);
            }
        }

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                bais = new ByteArrayInputStream(baos.toByteArray());
                ObjectInputStream in = new ObjectInputStream(bais);
                return (T) in.readObject();


            } catch (ClassNotFoundException ex) {
                throw new FunctorException(ex);
            } catch (IOException ex) {
                throw new FunctorException(ex);
            } finally {
                try {
                    if (bais != null) {
                        bais.close();
                    }

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     * @throws FunctorException if the transformer returns an invalid type
     */
    public boolean evaluate(T object) {
        Boolean result = iTransformer.transform(object);
        if (result == null) {
            throw new FunctorException("Transformer must return an instanceof Boolean, it was a " + (result == null ? "null object" : result.getClass().getName()));
        }
        return result.booleanValue();
    }

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