36 | How to delete a specific column data form a entity.How to delete a specific column data form a entity. |
28 | Running ObjectDB on a node that does not have internet connectivity.UnknownHostException: java.sun.com at java.net.PlainSocketImpl.connect(Unknown Source) at java.net.SocksSocketImpl.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at sun.net.NetworkClient.doConnect(Unknown Source) at sun.net.www.http.HttpClient |
6 | getJtaDataSource()-enabled data source to be used by the persistence provider. The data source corresponds to the jta-data-source element in the persistence.xml file or is provided at deployment or by the container. Returns: the JTA-enabled data source to be used by the persistence provider Since: JPA 1.0 |
6 | Server Configuration: <server> <connection port="6136" max="0" /> <data path="$objectdb/db-files ... . The <data> element <data path="$objectdb/db-files" /> The <data> element has one attribute ... prefix, if specified (as demonstrated above), represents the ObjectDB home directory. The data path |
6 | JPA Persistable TypesThe term persistable types refers to data types that can be used for storing data in the database ... , Mapped superclasses, Embeddable classes. Simple Java data types: Primitive types, Wrappers, String ... persistent fields would cause data duplication in the database. Entity Classes An entity class |
6 | objectdb-2.6.9_06: Extended Persistence Context fails: 'Attempt to begin a new transaction when a transaction is active'.proxy.$Proxy196.buildProject(Unknown Source) at com.greensoft.objectdb.test.mini.ejb.__EJB31_Generated__ExtProjectBuilder__Intf____Bean__.buildProject(Unknown Source) at com.greensoft.objectdb.test ... app version now builds a slightly more complex Project with an additional Source entity and a "model |
1 | Step 2: Entity Class and Persistence Unit in the database was created in the project (under Source Packages > guest). Use copy and paste to replace the new source file content with the following code: package guest; import java.io ... a text editor (by right clicking and selecting Edit or by double click and then moving to the Source |
1 | Step 2: Entity Class and Persistence Unit the project node (in the [Package Explorer] window), select New > Source Folder, enter src/main/java ... the new source directory node (in the [Package Explorer] window) and selecting New > Class. Enter guest as ... : src/main/java > guest). Use copy and paste to replace the new source file content |
1 | Step 2: Entity Class and Persistence Unit the database was created in the project (under Source Packages > guest). Use copy and paste to replace the new source file content with the following code: package guest; import java.io.Serializable ... that was added to the project (under Other Sources > src/main/resources > META-INF). Open |
0 | javax.jdo.spi.PersistenceCapable that receives the field values. oid - the ObjectId source of the copy. Since: JDO 1.0 void ... , Object oid) Copy fields from an outside source to the key fields in the ObjectId. Copy fields from an outside source to the key fields in the ObjectId. This method is generated in the PersistenceCapable |
