Sap Se

Alexandrina Ivanova

Peter K Matov

Various systems and methods for dynamic bytecode modification of classes and class hierarchies are described herein. In various embodiments, a Java&#xae; agent is received at a launch of a Java&#xae; Virtual Machine (JVM&#xae;), the agent implementing a premain method, the premain method accepting a reference to an instrumentation instance. The instrumentation reference is then stored, a deployment container is initialized, and, within the deployment container, an instance of an application is created. The instrumentation reference is then provided to the application instance. A class transformer is then retrieved from a persistence provider, and the class transformer is wrapped by an O.R. Persistence Container Class Transformer, which is then registered with the instrumentation instance. A class to be transformed is passed to the class transformer, which dynamically modifies the bytecode of the class before the class is loaded by the JVM&#xae;.

Dynamic bytecode modification of classes and class hierarchies

Various embodiments include systems, methods, and software that leverage shared binary storage for several purposes. Such purposes, in some embodiments, include reduced deployment overhead in terms of data to transport, time to instantiate, and reduction, if not elimination, of redundancies and conflicts of and between software system components and configurations, such as by sharing single instances of binary files persisted in deployment units and avoiding duplicates thereof. In some such embodiments, deployment units of a software system, such as an ERP or other enterprise-class software system, are stored in a system database or other central data storage entity. In response to a request to instantiate a system based on the deployment units, the deployment units are staged in memory, metadata to facilitate deployment on a server is written, the deployment units and metadata are transmitted to each server to which deployment is requested, and the deployed system is started.

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Sofia, Bulgaria

Alexandrina Ivanova