Other

Sun Microsystems, Inc.

Tony Chun Tung Ng

Timothy R Learmont

Albert C Gondi

Thulasiraman Jeyaraman

A method for using a Synchronization Interface in a computer system compliant with a CORBA Object Transaction Service or a Java Transaction API (such as Java 2 Platform Enterprise Edition Reference Implementation) to perform internal state clean up in containers associated with a completed transaction. First, a synchronization object is registered for each new transaction in a container with a Transaction Manager. The Transaction Manager detects a completion of the transaction and then invokes an &ldquo;after_completion&rdquo; operation (method) on the synchronization object. This notifies each container involved in the completed transaction to perform internal memory space clean up. Thus, the method uses an existing Synchronization Interface mechanism to perform internal memory state clean up in containers, without adding additional communication mechanisms.

Method for using a transaction service synchronization interface to perform internal state clean up

In accordance with methods and systems consistent with the present invention, an improved object-relational mapping tool is provided that generates source code containing classes which preserve both changes to the database schema as well as customizations to a preexisting version of the classes. This functionality alleviates the programmer from having to recreate their changes to the classes when the database changes, thus saving significant development time over conventional systems.

Integrating both modifications to an object model and modifications to a database into source code by an object-relational mapping tool

A method is disclosed for providing distributed transaction support functionality using JDBC 1.0 drivers. Instead of creating a new physical database connection for each connection request, an interface driver internally maintains a mapping in a table between a global transaction identifier and the physical database connection. Even if an application requests multiple connections to the same database for the same transaction, all database access through those connections would actually be redirected to the same physical database connection as maintained in the table. This allows all the work to be coordinated under the same transaction. Thus, limited JDBC 2.0 Standard Extension driver compatibility is achieved using standard JDBC 1.0 drivers.

Method for distributed transaction support using JDBC 1.0 drivers

An improved object-database mapping tool is provided that generates indexes in a database corresponding to classes in an object-oriented application. Initially, the mapping tool maps each class in an object-oriented application to a table in a database. A user, for example, selects one or more fields to be indexed from one or more classes. The tool determines if the selected fields correspond to the columns in more than one table in the database. If the selected fields correspond to a plurality of tables in the database then the mapping tool generates a plurality of indexes. Alternatively, if the fields correspond to one table in the database then the mapping tool generates a single index.

Method and apparatus for creating indexes in a relational database corresponding to classes in an object-oriented application

Mapping rules for use in mapping data between a relational model and an object model. A user interface permits a programmer or other person to enter the mapping rules, and a mapping tool converts data between the relational model and the object model according to the mapping rules.

Rule-based approach to object-relational mapping strategies

A user interface permits a programmer or other person to manage lock groups for classes. The programmer enters information through the user interface to define new lock groups, update defined lock groups, and delete lock groups. The programmer manages the lock groups in the classes, and an optional mapping tool maps the defined lock groups when converting data between an object model and a relational model.

Growing community of inventors

Fremont, CA, United States of America

Tony Chun Tung Ng