Emc Corporation

Stanislav Sosnovsky

Ruben Michel

Richard Francis Cormier

Ilya Liubovich

Vitaly Rozenman

Andrew S Becher

Sylvia Martin

Shailendra S Bist

Dan Lottero

Prem K Singh

Described are techniques for executing an application. The application includes a plurality of partitions including business logic and one or more aspects. A first registration interface of an application programming interface is defined for registering a code entity and associated input and output parameters. A provider of a first aspect of the application is registered using the first registration interface to define the provider as a callback invoked from other code of the application programming interface that performs aspect weaving. The provider includes a first code entity and a first data entity of the first aspect. A second code entity of the business logic is executed that performs a call to the other code performing aspect weaving to obtain a second data entity of the business logic. The other code performing aspect weaving is executed and performs a callback to the provider of the first aspect.

Techniques using an API for aspect weaving

A system uses generative aspect oriented programming to propagating context between components in a component server, the system produces code that, when executed, implicitly propagates authenticating context between a client component and an invoked component which the client component invokes in a component server. The system generates a function that allows the specification of a timeout between the client component and the invoked component that the client component invokes in the component server. The timeout function receives a user-defined timeout value to be applied for interface invocations between the client component and the invoked component. The system further generates a function declaration that, upon execution, discloses a target component identity between a client component and an invoked component that the client component invokes in the component server. The target component identity specifies a specific identity of a target computer system to which an interface invocation between the client component and the invoked component is directed.

Methods and apparatus providing a categorical approach to aspect-oriented programming

A system produces a component framework that insulates components from an underlying communication infrastructure by receiving a component descriptor that specifies fundamental properties of a component and receiving a definition of remotable interfaces associated with the component. A generation tool emits a component framework that includes: i) a coInterface interface that exposes the component's remotable interfaces; ii) a coFactories interface that declares factories for component operation; iii) a template for a coClass class, the coClass class operable to receive developer programmed functionality; and iv) a coBridge class that extends the coClass class and functions as a morphism from an IDL-defined component to an object model based, middleware-independent component.

Categorical approach for implementing a software component development architecture

A code generator generates component controllers by receiving, as input, an identity of a component and identities of dependent components of the component and applying a categorical-based generator that applies at least one morphism to generate at least one component controller to manage both collocated and remote access to the dependent components of the component in a strongly typed manner. Application of the categorical based generator includes generating at least one service-component controller for controlling service components that, during operation, are instantiated upon component server initialization to provide services to other components during component server operation and generating at least one session-component controller for controlling session components instantiated, utilized for services during a session, and terminated as needed by other components.

Methods and apparatus providing a categorical approach to strongly typed component management

A system provides a generation tool that emits a method declaration in a coFactory, and further emits the method's definition in a coBridge. Locating a naming service is delegated to a server infrastructure, and names of the sought after interface and the required component are further emitted. The generative approach disclosed assures a proper type of a downcast. Errors are handled by throwing an exception if either the component or its interface is absent. The coClass implements the coFactories, and a developer of a component can access other component by simply invoking a method within the coClass, which is implemented in a coBridge.

System and methods for generating a software component interface

A software build framework includes and architecture to identify software components including sets of classes, or objects, and categorizes the objects into layers in the component. A set of build rules identifies allowable dependencies between the component layers among the same and other components in the system, as well as external entities such as off the shelf (OTS) and third party vendor products outside the development control. The build mechanism enumerates a set of dependencies for each of the components, and an enforcer analyzes the dependencies to identify dependencies in violation of the rules. The enforcer separates the compile time and runtime inheritance paths to detect indirect monolithic inheritance. In this manner, dependency rules define an efficient and optimal architecture which lends itself well to modifications, timely builds and deliverable releases, and enforces the dependency rules at compile time so as to avoid generating an obsolete or suspect build.

System and methods for defining a software build

A system provides categorical mapping of valuetypes by receiving, as input, a valuetype within an object model specification. The system applies a categorical-based generator that applies at least one morphism to the object model specification. Application of the categorical-based generator generates an interface that exposes the valuetype in an interface object model and generates an implementation of the interface that exposes the valuetype in a middleware implementation object model. The interface and its implementation seamlessly support valuetype properties including inheritance, null values, native casting and arbitrary graph communication.

Methods and apparatus for providing a categorical approach to valuetype bridge support

Conventional development architectures for software system development employ varied invocation and triggering mechanisms for various objects and processes, such as services. Integrating new services tends to impose substantial changes in multiple code objects, requires retroactive testing, and increases the risk of failure. A services architecture in which users of a service seamlessly employ a respective service using only the objects, classes, and entities germane to the service usage provides interprocess module and service entity invocation. Extraneous definitions and functions, such as housekeeping relating to activation and passivation, location (module or component) of the service, and memory allocation, are removed from the user view. The architecture provides for automatic activation in the event components for providing the service have been passivated. Invocation requests are mapped across modules to the appropriate service entities. In this manner, the services architecture provides a seamless user view of the service by handling extraneous functions and allowing the service user to focus on the subscriber rather than the service implementation detail.

Methods and apparatus for providing extensible lightweight services in a data storage environment

In a conventional managed information environment network, event notification mechanisms typically monitor the various nodes and interconnections in the network. In particular configurations of the invention, an event service infrastructure allows an event, or class definition, to define the event and related event data. Invocation of the event includes only the event specific class definition. The infrastructure transparently processes the subsequent reporting and invocation of the appropriate event handler. The event handler, corresponding to the event definition, performs remedial and responsive processing of the event. A developer need only develop entities to subscribe to an event to identify the appropriate handler, and publish the event with any related event data upon detection. Each particular event avoids extraneous event definitions and associated files, thereby relieving the developer from unrelated events and allowing focus on the pertinent events. A detecting software entity initiates event handling by publishing the event, upon which the event service identifies and invokes each subscriber entity for performing the event handler associated with the event.

Methods and apparatus providing an event service infrastructure

Complex software systems often require time-based processing, such as delayed or periodic timer event handling. A timer service provides an Application Programming Interface (API) for managing timers, and therefore provides a developer abstraction for representing time-based processing. In operation, the timer service infrastructure employs a plurality of timer events, each having a corresponding timer handler, in which each of the timer events is associated with a generic timer reference, employed by a timer interface. The generic reference, therefore, may refer to any of the plurality of timers. The timer service may disable, or passivate modules including subscribers having timer handlers without disrupting timer continuity and invocation. Upon timer expiration, the timer service enables modules having subscribers to the timer. The timer service therefore seamlessly enables inactive modules upon timer expiration. Further, the common generic timer reference avoids timer event specific stubs and references related to specific classes, which tend to complicate deployment.

Methods and apparatus for a timer event service infrastructure

A system abstracts an object model by receiving an object model specification defining application semantics for an application to access, via invocations, objects identified in the object model specification. The system applies a categorical-based generator that applies at least one morphism to the object model specification to generate an abstraction interface object model that preserves application semantics defined within the object model specification and is independent of a middleware object access mechanism. The system also generates an implementation of the abstraction interface object model for a particular middleware object access mechanism used to access data within objects corresponding to the object model specification.

Methods and apparatus for creating middleware independent software

System, methods and apparatus operate a module server to service a plurality of different storage area network management modules that each provides a respective type of management functionality for elements operating within a storage area network. The system operates an administration module in conjunction with a module sever. The administration module provides a plurality of module administration interfaces that are software interfaces that can be remotely invoked to administer the plurality of different storage area network management modules. The system receives a remote invocation of at least one of the plurality of module administration interfaces and applies module administration functionality associated with the at least one remotely invoked module administration interface to remotely administer at least one of the storage area network management modules serviced by the module server. By decoupling the administration from the module server, the module server does not need to be shut down to perform module administration and is a less complicated and smaller software process.

Growing community of inventors

Upton, MA, United States of America

Stanislav Sosnovsky