SYSTEM AND METHOD FOR ENTERPRISE JAVA BEAN SUPPORT IN A MULTITENANT APPLICATION SERVER ENVIRONMENT

• US 20160094408A1
• Filed: 09/28/2015
• Published: 03/31/2016
• Est. Priority Date: 01/21/2014
• Status: Active Grant

• Current Assignee: Oracle International Corporation (Oracle Corporation)
• Original Assignee: Oracle International Corporation (Oracle Corporation)
• Inventors: SEGU, SRINIVASA
• Granted Patent: US 9,973,384 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 41/0843 based on generic templates
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 41/0897 by horizontal or vertical scaling of resources, or by migrating entities, e.g. virtual resources or entities
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 67/1004 Server selection for load balancing
• CPC Class Codes: H04L 67/63 Routing a service request depending on the request content or context

Abstract

In accordance with an embodiment, described herein is a system and method for supporting Enterprise Java Bean (EJB) and other application types in a multitenant application server environment. The system includes an application server domain with a plurality of partitions, an EJB application, and a plurality of partition-aware server components that interact with the EJB container. The EJB application includes partition-specific code deployed as a separate instance to each partition, and shareable resources across two or more partitions. The system can additionally delegate resource-heavy processing functions of each EJB application to one or more of the server components. At runtime, the system receives a request for an EJB application in a particular partition, and creates an object to hold information of the particular partition. The server components, when invoked by the EJB container, obtains the partition information and execute in a context of the particular partition.

Claims

1. A system for providing Enterprise Java Bean (EJB) application support in an application server environment, comprising:

a computer that includes a microprocessor;

an application server environment, executing on the computer, which includes a domain with a plurality of partitions, a plurality of server components, and an EJB container that depends on the plurality of server components;

an application with partition-specific code deployed as a separate instance to each partition in the EJB container;

wherein when a client request directed to an instance of the application in a particular partition is received, the system establishes an identity of the particular partition for use by the EJB container and one or more server components.

2. The system of claim 1, wherein the partition-specific code is part of the EJB application that has been determined not to be multiplied.

3. The system of claim 1, wherein the plurality of server components include a logging component, a job scheduler, an application container, a timer component, and a Java Transaction API (JTA).

4. The system of claim 1, wherein each of the plurality of server components is partition-aware.

5. The system of claim 1, the partition identity is established at an entry point into the domain wherein the partition identity can be ascertain.

6. The system of claim 5, wherein the entry point is one selected from a group consisting of a remote method invocation container, a work manager, a job scheduler, and a web container.

7. The system of claim 1, wherein the partition identity is included in a component invocation context (CIC) instantiated at the entry point, and pushed on a thread for use by the EJB container or one of the server components.

8. The system of claim 7, wherein the entry point that instantiates the CIC context pushes the CIC context on and pop it from the thread.

9. The system of claim 7, wherein the CIC context is pushed on the threads as ThreadLocal state.

10. A method for providing Enterprise Java Bean (EJB) application support in a multitenant application server environment, comprising:

providing an application server environment, executing on a computer, which includes a domain with a plurality of partitions, a plurality of server components, and an EJB container that depends on the plurality of server components;

providing an application with partition-specific code deployed as a separate instance to each partition in the EJB container;

receiving a client request directed to an instance of the application in a particular partition is received; and

establishing an identity of the particular partition for use by the EJB container and one or more server components.

11. The method of claim 10, wherein the partition-specific code is part of the EJB application that has been determined not to be multiplied.

12. The method of claim 10, wherein the plurality of server components include a logging component, a job scheduler, an application container, a timer component, and a Java Transaction API (JTA).

13. The method of claim 10, wherein each of the plurality of server components is partition-aware.

14. The method of claim 10, the partition identity is established at an entry point into the domain wherein the partition identity can be ascertain.

15. The method of claim 14, wherein the entry point is one selected from a group consisting of a remote method invocation container, a work manager, a job scheduler, and a web container.

16. The method of claim 10, wherein the partition identity is included in a component invocation context (CIC) instantiated at the entry point, and pushed on a thread for use by the EJB container or one of the server components.

17. The method claim 16, wherein the entry point that instantiates the CIC context pushes the CIC context on and pop it from the thread.

18. The method of claim 16, wherein the CIC context is pushed on the threads as ThreadLocal state.

19. A non-transitory computer readable storage medium, including instructions stored thereon which when read and executed by one or more computers cause the one or more computers to perform the steps comprising:

providing an application server environment, executing on the computers, which includes a domain with a plurality of partitions, a plurality of server components, and an EJB container that depends on the plurality of server components;

providing an application with partition-specific code deployed as a separate instance to each partition in the EJB container;

receiving a client request directed to an instance of the application in a particular partition is received; and

establishing an identity of the particular partition for use by the EJB container and one or more server components.

20. The non-transitory computer readable storage medium of claim 19, wherein the partition-specific code is part of the EJB application that has been determined not to be multiplied.