Migrating from Java EE to the Data Grid
From a design and implementation perspective, the data grid shares a lot of patterns with Java Enterprise Edition ecosystem. This section provides a mapping to help migrate your existing JavaEE application to the data grid.
Java EE vs. the Data Grid
| Component | JEE | Data Grid |
|---|---|---|
| Persistency | JPA | Hibernate, JPA |
| Messaging | JMS,MDB | JMS
Polling Container Java version | .NET version Notify Container Java version | .NET version Native Messaging API, MDB1 |
| Security | JAAS, SSL | Spring Security, SSL |
| Web Session Management | HttpSession | HTTP Session Management |
| Transaction Management | JTA | Spring Transaction via Jini Transaction Manager |
| Data Access | JDBC , Session Bean (Stateless or Stateful), Entity Bean | JDBC, Space, JPA , Session Bean (Stateless or Stateful)1, Entity Bean1 |
| Remoting | EJB, IIOP, RMI | Spring remoting over LRMI, EJB1 |
| Web | Servlet, JSP | Servlet, JSP via Jetty |
| Packaging and deployment | EAR, WAR | JAR, WAR, EAR1 |
| Contexts and Dependency Injection | JSR 299 | Spring IOC |
| System Management | JMX | JMX , SNMP, Native Admin API |
| Java Naming and Directory Service | JNDI | Jini Lookup Service |
1Available via EasyBeans, openejb, embedded jboss or embedded-glassfish.
Messaging Concepts & Patterns
| Functionality | JEE | GigaSpaces |
|---|---|---|
| Queue | JMS Queue | Polling Container Java version | .NET version |
| Topic | JMS Topic | Notify Container Java version | .NET version |
| Unit of Order | JMS UOO | Unit Of Work |
| Queue Partitioning | JMS Service Activator Aggregator Strategy | Parallel Queue |
| Distributed Priority Queue | JMS Quality of Service | Priority Based Queue |
| Compute Grid | MDB + Custom code | Master-Worker |
