Examples of org.apache.commons.pool.PoolableObjectFactory

org.apache.commons.pool.PoolableObjectFactory
An interface defining life-cycle methods for instances to be used in an {@link ObjectPool ObjectPool}.
By contract, when an {@link ObjectPool ObjectPool}delegates to a PoolableObjectFactory,
1. {@link #makeObject makeObject} is called whenever a new instance is needed.
2. {@link #activateObject activateObject} is invoked on every instance before it is returned from the pool.
3. {@link #passivateObject passivateObject} is invoked on every instance when it is returned to the pool.
4. {@link #destroyObject destroyObject} is invoked on every instance when it is being "dropped" from the pool (whether due to the response from {@link #validateObject validateObject}, or for reasons specific to the pool implementation.)
5. {@link #validateObject validateObject} is invoked in an implementation-specific fashion to determine if an instance is still valid to be returned by the pool. It will only be invoked on an {@link #activateObject "activated"}instance.
@author Rodney Waldhoff @version $Revision: 1.6 $ $Date: 2003/10/09 21:45:56 $ @see ObjectPool


    private final List destroyed = new ArrayList();
    public void testReturnObjectDiscardOrder() throws Exception {
        // setup
        // We need a factory that tracks what was discarded.
        PoolableObjectFactory pof = new PoolableObjectFactory() {
            int i = 0;
            public Object makeObject() throws Exception {
                return new Integer(i++);
            }

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        return new TestSuite(TestSoftReferenceObjectPool.class);
    }


    protected ObjectPool makeEmptyPool(int cap) {
        return new SoftReferenceObjectPool(
            new PoolableObjectFactory()  {
                int counter = 0;
                public Object makeObject() { return String.valueOf(counter++); }
                public void destroyObject(Object obj) { }
                public boolean validateObject(Object obj) { return true; }
                public void activateObject(Object obj) { }

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     * Override this method to implement your on {@link org.apache.commons.pool.ObjectPool}.
     */
    public ObjectPool createConnectionPool(JdbcConnectionDescriptor jcd)
    {
        if (log.isDebugEnabled()) log.debug("createPool was called");
        PoolableObjectFactory pof = new ConPoolFactory(this, jcd);
        GenericObjectPool.Config conf = jcd.getConnectionPoolDescriptor().getObjectPoolConfig();
        ObjectPool op = new GenericObjectPool(pof, conf);
        return op;
    }

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    private SoftReferenceObjectPool pool = null;


    public void setUp() {
        pool = new SoftReferenceObjectPool(
            new PoolableObjectFactory()  {
                int counter = 0;
                public Object makeObject() { return String.valueOf(counter++); }
                public void destroyObject(Object obj) { }
                public boolean validateObject(Object obj) { return true; }
                public void activateObject(Object obj) { }

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