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60

Pre-detach loading: retrieval by navigation not working in if statement

: objectdb.temp.no-detach NOT USED This problems only seems to occur in my large web application. I know ... application parallel to the large web application, but the problem does not happen in the smaller web ... , which is a "one size fits all" approach, does not meet my needs for all situations. I can configure an entity
57

JBOSS AS7 7.1.1 - Entity not persisted and createNamedQuery fire exception

);   if ( type == null )     System.out.println( "ManagedType Guest not found"  );   // NamedQuery does not ... ="select g from guest.Guest g order by g.name" ) } ) ... // NamedQuery does not work // TypedQuery ... -jee6.zip does not even deploy on JBOSS AS7 stack trace is: 09:40:30,202 INFO  [org.jboss.as.server
57

com.objectdb.o.TEX: Type ... is not found, for a class that's already been enhanced successfully.

Noticing very poor performance from ObjectDB, not exactly sure what the problem is. Tried to implement Enhancement (because the log always says that the classes are not enhanced). The main class starts like this, and does not reference any persistent classes directly. static void main(String
56

Apache Tomee 1.5.2: Failed to use JTA (TransactionManager is not found)

", I can deploy, but not with JTA. May 20, 2013 11:50:32 PM org.apache.tomee.catalina ... (TransactionManager is not found): com.objectdb.o._PersistenceException: Failed to use JTA (TransactionManager is not found) at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler
11

combined index not used

(see attachment) but in the query plan we can see that this index is not used: Query Plan Description ... we do not have that database any more, but you could check in the Action table, typically ... to understand that selection and provide a fix. support Support The reason for not using the composite
11

java 8 LocalDateTime is not working in query

: SELECT t FROM Test t Joe Joe Khan New Java 8 date/time types are not supported by JPA yet. support ... here, it is not quite working: In JPA you can use the @Convert annotation in order to translate a value ... is too compatible, and on the other side it is not compatible enough. I would appreciate any constructive
11

Enum fields are set to null and embeddable enum class does not show in explorer

I switched to version 2.8.2 and now it seems that my enum types are not recognized and the field in ... ! The enum type is also not listed in the explorer. I am talking about an enum class, which implements another interface. My List property is defined with the interface and not the specific class. Maybe
1

[ODB1] Chapter 7 - JDOQL Queries

collection is not specified explicitly, as it is in this query, the entire Extent of the candidate class ... . In such cases, if an Extent is not managed for the candidate class, the query is not valid ... over the objects in the database would not be required, and the query would execute much faster
1

[ODB1] Chapter 5 - JDO Connections

than necessary is not recommended in multi user applications because of the resources ... . Both PersistenceManagerFactory and PersistenceManager are defined as JDO interfaces, not as classes ... above may throw an IOException if the jdo.properties file is not found. In addition
1

[ODB1] Chapter 4 - JDO Metadata

, ObjectDB determines whether or not each class is persistent. It searches for JDO metadata description ... , the class is persistent, and if not, the class is transient. Metadata for class a.b.X (a.b is the package ... of class X are not persistent fields, and when an instance of class C is stored, only persistent fields

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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