Examples of Framework.ServiceObjectContext

Framework.ServiceObjectContext
A service object proxy sub-classes the service class, however doesn't really need to instantiate it. If running locally, the proxy explicitly calls the superclasses Init() method, and if running distributed, the EJB container takes care of instantiating the actual object. However, in Java, creating a sub-class (in this case the proxy) implicitly invokes super(), so any exceptions thrown from the superclass constructor will not be handled by the proxy. To avoid this, we have a constructor on the service class that takes an instance of this class, and explicitly invoke this. This constructor will always be empty, and hence throw no exceptions.

    /**
     * This constructor can store no reference to the original object,
     * but must instead copy over it's necessary attributes.
     */
    public BusinessDBMgrProxy(BusinessDBMgr baseClass) {
        super(new ServiceObjectContext());
        ServiceInvoker serviceInvoker = getInvoker(baseClass);
        if (serviceInvoker == null) {
            throw new UsageException("Cannot create a proxy for an object that has not yet been exported.");
        }
        this.objectName = serviceInvoker.getObjectName();

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    /**
     * This constructor can store no reference to the original object,
     * but must instead copy over it's necessary attributes.
     */
    public ConcurrencyMgrProxy(ConcurrencyMgr baseClass) {
        super(new ServiceObjectContext());
        ServiceInvoker serviceInvoker = getInvoker(baseClass);
        if (serviceInvoker == null) {
            throw new UsageException("Cannot create a proxy for an object that has not yet been exported.");
        }
        this.objectName = serviceInvoker.getObjectName();

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    /**
     * This constructor can store no reference to the original object,
     * but must instead copy over it's necessary attributes.
     */
    public ConcurrencyMgrProxy(ConcurrencyMgr baseClass) {
        super(new ServiceObjectContext());
        ServiceInvoker serviceInvoker = getInvoker(baseClass);
        if (serviceInvoker == null) {
            throw new UsageException("Cannot create a proxy for an object that has not yet been exported.");
        }
        this.objectName = serviceInvoker.getObjectName();

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    /**
     * This constructor can store no reference to the original object,
     * but must instead copy over it's necessary attributes.
     */
    public BusinessDBMgrProxy(BusinessDBMgr baseClass) {
        super(new ServiceObjectContext());
        ServiceInvoker serviceInvoker = getInvoker(baseClass);
        if (serviceInvoker == null) {
            throw new UsageException("Cannot create a proxy for an object that has not yet been exported.");
        }
        this.objectName = serviceInvoker.getObjectName();

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Related Classes of Framework.ServiceObjectContext

Express.services.BusinessDBMgrProxy

Express.services.ConcurrencyMgrProxy

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