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20

Eclipse plugin problem (using ObjectDB as a separate bundle)

(Groovy 1.8 and Eclipse 3.6) used. I have a com.epimss.lab.data.toxicology.TherapeauticDrugScreenRqst. Nested in this class are the following two classes: com.epimss.lab.data.misc.OtherRqst and com.epimss.lab.data.misc.RequestDateAndNumber. In my Eclipse wizard performFinish() method I persist
19

JBoss 7 startup fails

.Provider</provider> <jta-data-source>java:/DefaultDS</jta-data-source> <properties ... .as.connector.subsystems.datasources] (MSC service thread 1-4) Bound data source [java:jboss ... ) Bound data source [java:jboss/datasources/ExampleDS] 11:53:42,673 INFO [org.jboss.as.deployment
19

The server cannot start in CentOS

(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(Unknown Source) at sun.instrument
19

Failed to generate dynamic type objectdb.java.util.ArrayList

.commit(EMImpl.java:274) at nuwc.iof.data.AbstractObjectDBDatabase.processCommands(AbstractObjectDBDatabase.java:320) at nuwc.iof.data.AbstractInformationObjectDatabase$CommandProcessingTask.call(AbstractInformationObjectDatabase.java:290) at nuwc.iof.data.AbstractInformationObjectDatabase
4

Retrieving JPA Entity Objects

with data that is retrieved from the database (or from the L2 cache - if enabled). The new entity object ... is returned as is. Otherwise, the object data is retrieved from the database and a new managed entity object with that retrieved data is constructed and returned. If the object is not found in the database
4

Query fails with failed to read

at java.io.RandomAccessFile.readBytes(Native Method) at java.io.RandomAccessFile.read(Unknown Source) at java.io.RandomAccessFile.readFully(Unknown Source) at com.objectdb.o.LFL.YV(LFL.java ... .java:555) at java.lang.Thread.run(Unknown Source) [2018-08-17 19:14:41 #6 store.file
3

What is the Java Persistence API (JPA)?

) is that in JPA data is represented by classes and objects rather than by tables and records as in JDBC. Using plain old Java objects (POJO) to represent persistent data can significantly simplify database ... are Object Relational Mapping (ORM) tools. The mapping bridges between the data representation in
3

Server User List

under the server data directory the user is allowed to access: The required path attribute specifies a directory path relative to the root data directory. Permission to access a directory always includes ... permission to access any directory in the data directory. $user represents the user's username
0

Step 5: Design a BIRT Report Chart

the [Select Chart Type] tab select Tube as the chart type and click Next. In the [Select Data] tab ... with the real data: In the next step we will add a table view of the same data to the report.
0

javax.jdo.spi.StateManager

is persistent. Instances whose state is stored in the data store return true. Transient instances return ... call; newly made persistent or deleted persistent instances; persistent instances read in data store ... . This is a security precaution to ensure that the owning StateManager is the only source of any change

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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