ObjectDB ObjectDB

Internal Website Search

71-80 of 200 resultsRefresh

Mismatch client-server protocol prefix

(AbstractPlatformTransactionManager.java:757) I checked multiple times if the versions match. They do. DB server ... error. Every client request starts with a prefix that is checked by the server before handling the request. That check could fail if different ObjectDB versions are in use on the client and on the server

Internal objectdb exception when using different language on a machine

reference to a type id that doesn't exist. Could you please check the database file with the Doctor ... enhanced and caused the exceptions above. Although the enhancement check was activated: <enhancement agent="false" reflection="error" /> the enhancement check does not throw an objectdb exception


of its implementation, assuming the lower layer's exception was a checked exception. Throwing a "wrapped


Static Field javax.jdo.spi.JDOPermission JDOPermission GET_METADATA An instance of JDOPermission to be used for getMetadata permission checking. Since: JDO 1.0


Static Field javax.jdo.spi.JDOPermission JDOPermission CLOSE_PERSISTENCE_MANAGER_FACTORY An instance of JDOPermission to be used for closePersistenceManagerFactory permission checking. Since: JDO 1.0.1


Static Field javax.jdo.spi.JDOPermission JDOPermission SET_STATE_MANAGER An instance of JDOPermission to be used for setStateManager permission checking. Since: JDO 1.0


Static Field javax.jdo.spi.JDOPermission JDOPermission MANAGE_METADATA An instance of JDOPermission to be used for manageMetadata permission checking. Since: JDO 1.0.2


Annotation Element javax.jdo.annotations.ForeignKey String deferred Whether this foreign key is deferred (constraint is checked only at commit). Returns: whether this foreign key is deferred Default value: "" Since: JDO 2.1


Static Method javax.jdo.spi.JDOImplHelper JDOImplHelper getInstance() Get an instance of JDOImplHelper. This method checks that the caller is authorized for JDOPermission("getMetadata"), and if not, throws SecurityException. Returns: an instance of JDOImplHelper. Throws: SecurityException


Method javax.jdo.identity.SingleFieldIdentity boolean equals( Object obj ) Check the class and class name and object type. If restored from serialization, class will be null so compare class name. Parameters: obj - the other object Returns: true if the class or class name is the same Since: JDO 1.0

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.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support