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6

Paths and Types in JPQL and Criteria API

affect the built query directly. The constructed expression must be integrated into query clauses
6

Database Server

embedded mode, ObjectDB is integrated as a library and runs within the application process
4

Shared (L2) Entity Cache

.persistence.cache.storeMode The "javax.persistence.cache.storeMode" property specifies if new data ... with new data. CacheStoreMode.USE - new data is stored in the cache - but only for entity objects that are not in the cache already. CacheStoreMode.REFRESH - new data is stored in the cache - refreshing
4

Database Explorer

to view data in ObjectDB databases, execute JPQL and JDOQL queries and edit the content of databases ... provides two types of viewer windows for viewing the database data. The Table window follows ... a single database object. This type of viewer is useful for viewing data of a simple object model. In
4

Database Management Settings

. sync=false is much faster in writing data to a database, but true might be safer in production. By ... . Indexing a large amount of data may take considerable processing time. The enabled attribute (whose value is "true" or "false") specifies if existing data should be indexed automatically by ObjectDB in
4

JPA Entity Fields

Fields Inverse (or mapped by) fields contain data that is not stored as part of the entity in ... a bidirectional relationship. In a bidirectional relationship, the side that stores the data ... is explicitly defined. Property Access When an entity is being stored in the database data is extracted from
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
1

JPA Web App Tutorial - Eclipse Project

Integration for WTP is installed when the Maven project is imported into the IDE). Choose or define
1

Step 6: Design a BIRT Report Table

. Set the column number to 2, number of details to 1, select the data set (e.g. Points by X) in the third field and click OK. Fill the table with data by dragging the x and y columns from the data set in the [Data Explorer] window (under the data set node) and dropping them on the second table row
0

javax.jdo.PersistenceManagerFactory

() Get the driver name for the data store connection. Get the driver name for the data store connection. Returns: the driver name for the data store connection. Since: JDO 1.0 Object getConnectionFactory() Get the data store connection factory. Get the data store connection factory. Returns: the data store

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?

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