| ODMG 3.0 |
JDO |
| Object
Model |
| Transparent Persistence |
Transparent Persistence |
| Persistence by Reachability |
Persistence by Reachability |
| Java, C++, and Smalltalk Language Bindings on top of ODMG object model |
Tight integration with Java object model |
| Vendor specific interfaces |
PersistenceCapable interface |
| Collection factory for five basic collections |
Collection factory “by Example”,
Second Class Objects |
| Object identity managed by database system |
Three identity models (more) |
| Life
Cycle |
| Objects live until transaction completes |
Objects can live as long as PersistenceManager
(more) |
| Objects can not be accessed after transaction completes |
API allows the setting of properties |
| Callbacks not defined |
Callbacks for load, store, delete,
and clear |
| Databases
and Transactions |
| Easy to use but proprietary database and transaction
management |
Databases, connections and transactions fit into other Java APIs |
| No distributed transactions defined |
Support for distributed transactions |
| Vendor specific extensions for managed environments (EJB) |
Support for managed environments (EJB) |
| Vendor specific extension for optimistic locking |
Optimistic locking is optional API |
| Explicit locking of objects |
No explicit locking -- locks set
automatically |
| Query |
| OQL: an extensive object query language |
Queries based on Java programming language
-- JDOQL (more) |
| Complex query expressions |
Simple filter strings |
| Results can be compositions, projections or just an integer |
Results are always collections of
persistence capable objects |
| Class name is part of query string |
Class objects explicitly used as parameters |
| No imports or name scope |
Imports, "this", named parameters |
| Object-oriented Data Structures Using Java
by Nell B. Dale, Daniel T. Joyce, Chip Weems
Average Customer Review:  based on 3 reviews.
Customer Review: This seller was very punctual with the shipping and delivery of the book and it was in very good condition like the ad had stipulated. I will recomment him to anyone ST
|
| Objects, Abstraction, Data Structures and Design: Using Java version 5.0
by Elliot B. Koffman, Paul A. T. Wolfgang
Average Customer Review:  based on 2 reviews.
Customer Review: Fails to address threading/concurrency issues. You will not find coverage of the new Concurrency Utilities including the new collection classes in package java.util.concurrent. You will not find the following terms in the index: concurrency synchronized thread thread-safe
|
| Java Data Objects
by David Jordan, Craig Russell
Average Customer Review: based on 11 reviews.
Customer Review: This book is definitely the best on java data objects! i have read the one from prentice hall and addison wesley`s. its true that the first code example doesnt work, what is a shame but if you overcome your frustration and have a look at the oreilly website you can fond the correct and again detailed information (and even reason) to...
|
| Objects, Abstraction, Data Structures and Design: Using Java
by Elliot B. Koffman, Paul A. T. Wolfgang
Publisher: Wiley
Publication Date: August 2004
|
| Data Structures and Software Development in an Object Oriented Domain, Java Edition
by Jean-Paul Tremblay, Grant A. Cheston
Publisher: Prentice Hall
Publication Date: August 2002
|
Also see
