Examples of com.sun.enterprise.resource.ResourceHandle

com.sun.enterprise.resource.ResourceHandle
ResourceHandle encapsulates a resource connection. Equality on the handle is based on the id field @author Tony Ng

        return result;
    }


    //TODO can't this be replaced by getResourceFromPool ?
    private ResourceHandle getMatchedResourceFromPool(ResourceAllocator alloc) {
        ResourceHandle handle;
        ResourceHandle result = null;
        ArrayList<ResourceHandle> activeResources = new ArrayList<ResourceHandle>();


        try{
            while ((handle = ds.getResource()) != null) {
                if (matchConnection(handle, alloc)) {

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        if (_logger.isLoggable(Level.FINE)) {
            _logger.log(Level.FINE, "Purging resources of size : " + resourcesCount);
        }
        for (int i = resourcesCount - 1; i >= 0; i--) {


            ResourceHandle resource = ds.getResource();
            if (resource != null) {
                ds.removeResource(resource);
                totalResourcesRemoved += 1;
            }
        }

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     */
    protected ResourceHandle createSingleResourceAndAdjustPool(
            ResourceAllocator alloc, ResourceSpec spec)
            throws PoolingException {


        ResourceHandle handle = ds.getResource();
        if (handle != null) {
            ds.removeResource(handle);
        }


        ResourceHandle result = getNewResource(alloc);
        if (result != null) {
            alloc.fillInResourceObjects(result);
            result.getResourceState().setBusy(true);
        }


        return result;
    }

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     * @param resourceAllocator ResourceAllocator
     * @return ResourceHandle newly created resource
     * @throws PoolingException when unable create a resource
     */
    protected ResourceHandle createSingleResource(ResourceAllocator resourceAllocator) throws PoolingException {
        ResourceHandle resourceHandle;
        int count = 0;
        long startTime = 0;
        while (true) {
            try {
                count++;
                startTime = System.currentTimeMillis();
                resourceHandle = resourceAllocator.createResource();
                if(_logger.isLoggable(Level.FINE)) {
                    _logger.log(Level.FINE, "Time taken to create a single "
                            + "resource : "
                            + resourceHandle.getResourceSpec().getResourceId()
                            + " and adding to the pool (ms) : "
                            + (System.currentTimeMillis() - startTime));
                }
                if (validation || validateAtmostEveryIdleSecs)
                    resourceHandle.setLastValidated(System.currentTimeMillis());
                break;
            } catch (Exception ex) {
                if(_logger.isLoggable(Level.FINE)) {
                    _logger.log(Level.FINE, "Connection creation failed for " + count + " time. It will be retried, "
                        + "if connection creation retrial is enabled.", ex);

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    }




    public ResourceHandle createResource(ResourceAllocator alloc) throws PoolingException {
        //NOTE : Pool should not call this method directly, it should be called only by pool-datastructure
        ResourceHandle result = createSingleResource(alloc);


        ResourceState state = new ResourceState();
        state.setBusy(false);
        state.setEnlisted(false);
        result.setResourceState(state);


        if (poolLifeCycleListener != null) {
            poolLifeCycleListener.connectionCreated();
        }
        return result;

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    public void emptyFreeConnectionsInPool() {
        if (_logger.isLoggable(Level.FINE)) {
            _logger.log(Level.FINE, "Emptying free connections in pool : " + poolInfo);
        }


        ResourceHandle h;
        while ((h = ds.getResource()) != null) {
            ds.removeResource(h);
        }
    }

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     * be called
     */
    private void killExtraResources(int numToKill) {
        cancelResizerTask();


        ResourceHandle h;
        for (int i = 0; i < numToKill && ((h = ds.getResource()) != null); i++) {
            ds.removeResource(h);
        }
        scheduleResizerTask();
    }

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    }


    @Override
    protected ResourceHandle getUnenlistedResource(ResourceSpec spec, ResourceAllocator alloc,
            Transaction tran) throws PoolingException {
        ResourceHandle handle = null;


        if(incrementPoolSize()){
            try{
                handle = createSingleResource(alloc);
            }catch (PoolingException ex){
                decrementPoolSize();
                throw ex;
            }
            ResourceState state = new ResourceState();
            handle.setResourceState(state);
            state.setEnlisted(false);
            setResourceStateToBusy(handle);
            return handle;
        }
        _logger.info("Fail as poolSize : " + poolSize);

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                    "EndpointFactory is currently not available");
        }


        MessageEndpoint endpoint = null;
        try {
            ResourceHandle resourceHandle = allocator_.createResource(xaResource);


            MessageBeanListener listener =
                    messageBeanPM_.createMessageBeanListener(resourceHandle);


            //Use the MDB's application classloader to load the

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            throws PoolingException {
        try {
            ManagedConnection mc =
                    mcf.createManagedConnection(subject, reqInfo);


            ResourceHandle resource =
                    createResourceHandle(mc, spec, this, info);
            ConnectionEventListener l =
                    new ConnectionListenerImpl(resource);
            mc.addConnectionEventListener(l);
            return resource;

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com.sun.enterprise.connectors.inflow.ConnectorMessageBeanClient

com.sun.enterprise.resource.allocator.AbstractConnectorAllocator

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