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Dependency from enhanced classes to the objectDB library

EmbeddedSystems Please provide step by step instructions on how to use this example to get the exception on #1 ... .ClassLoader.loadClass(Unknown Source) ... 78 more How to use the example step-by-step: 1) Import ... ) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) Caused by: java.lang.ClassNotFoundException

JBoss 7 startup fails

If you built the project by yourself step by step - maybe you misplaced a directory or a file ... step by step instructions for reproducing these two problems, starting with IDE downloading ... ] Package guest is not found by the enhancer (error 108) 13:49:37,705 ERROR [stderr] (MSC service thread

How to resolve 404 errors with Eclipse/Maven Spring MVC

The attached Eclipse Juno project was built by following the tutorial step by step, but updating ... I have created a project as guided by www.objectdb.com/tutorial/jpa/eclipse/spring/run. When I ... The requested resource is not available. Apache Tomcat/6.0.36" I'd love to use eclipse to single step

Query becomes slower on moving from ObjectDB 1.x to ObjectDB 2.x

the index the database has to be rebuilt by running the Doctor in repair mode. After fixing the index in that database (by running the Doctor) the query runs fast. support Support Thanks. i will check ... after conversion" Does it mean that, before conversion, i need to do the following steps 1. Update

EntityManagerFactory Fails To Swtich Over To Slave When Master Is Unavailable

when the master is unavailable. I simulate the master unavailable by stopping the master server ... .EMF.createEntityManager(EMF.java:253) at tutorial.Main.main(Main.java:22) Caused by: com.objectdb ... .objectdb.jpa.EMF.createEntityManager(EMF.java:250) ... 1 more Caused by: java.net.ConnectException

Problem with distinct select, order by and equivalent alias/attribute path

when ordering the results of some projection when the order by expression is different (though logically ... "             + "order by s_location.id asc";         System.out.println("Working query ... "             + "left join s.location as s_location "             + "order by s.location.id asc

Mapped by fields are not initialized by JOIN FETCH in queries

As demonstrated in this forum thread, a mapped by collection field with lazy fetch mode is not initialized in results of a query that uses JOIN FETCH on that collection field (when enhancement is used). support Support Build 2.4.1_06 fixes this issue (fields are now initialized and the test in

each 1-2 days objects on some objectdb level lock/block each other

(0x00000000b6681e10) by one thread. The second thread dump (0x00000000bc88c318) is related to reading from ... have been produced with 20 cores. The problematic situation is not caused by any specific activity ... to optimise queries that are too slow (and a few seconds could also be considered by users as slow), e.g. by

log entry and massive performance issues

-- set up a non optimized query (simple select) >>> our application step by step blows up (as ... .reportPrimaryResult" message should be followed by an exception, do you have a stack trace ... ? The last point regarding killing an application by using embedded-server mode, is it related

[ODB1] Chapter 7 - JDOQL Queries

= (Collection)query.execute(); Queries are represented by the javax.jdo.Query interface. A Query instance is constructed by one of the PersistenceManager's newQuery(...) methods. For example, in ... compilation succeeds, the Extent of Person instances in the database is iterated object by object

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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