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Tutorial
5

Step 2: Entity Class and Persistence Unit

) and selecting New > Class. Enter guest as the package name - use exactly that case sensitive package ... the [Project Explorer] window) and selecting New > Folder (or New > Other... > General > Folder and clicking Next). Select the project src folder as a parent folder, enter META-INF as a new folder
Tutorial
5

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 ... : Right click the src/main/resources node (in the [Project Explorer]) and select New > Folder
Tutorial
5

Step 3: Add a Main Class

clicking the tutorial package node (in the [Package Explorer] window) and selecting New > Class ... (); // Find the number of Point objects in the database: Query q1 = em.createQuery("SELECT COUNT(p ... ()); // Find the average X value: Query q2 = em.createQuery("SELECT AVG(p.x) FROM Point p
JPA Doc
5

javax.persistence.Cacheable

javax.persistence Annotation Cacheable Target: Classes Specifies whether an entity should be cached if caching is enabled when the value of the persistence.xml caching element is ENABLE_SELECTIVE or DISABLE_SELECTIVE. The value of the Cacheable annotation is inherited by subclasses
Manual
5

Database Doctor

- if recovery file is disabled. Using the database file simultaneously by two instances of the ObjectDB
Manual
5

Database Transaction Replayer

ObjectDB can record its internal engine operations in special binary recording (journal) files. Recording is enabled by default and can be disabled in the configuration. The ObjectDB Replayer tool can apply recorded database operations on a matching database backup (if available). This ability
Manual
5

JPA Persistable Types

). Therefore, it is recommended to only use explicitly specified persistable types. Note: Starting ObjectDB version 2.2.9 - serialization is disabled by default.
JPA Doc
4

javax.persistence.criteria.CriteriaQuery

roots Since: JPA 2.0 Selection getSelection() Return the selection of the query, or null if no selection has been set. Return the selection of the query, or null if no selection has been set. Returns: selection item Since: JPA 2.0 AbstractQuery groupBy(List> grouping) Specify
Tutorial
4

Java EE 6 JPA Tutorial - NetBeans Project

: Select File > Open Project.... Select the guestbook-jee6 directory and click Open Project. Run the project: Select Run > Run Main Project... (or F6). Choose or define the server and click OK
Manual
4

JPA Entity Fields

the Department entity): SELECT e FROM Employee e WHERE e.department = :d The mappedBy element defines ... ; } In that case the employees field is filled with the results of the following query: SELECT e FROM ... results by specifying a selected key field using the MapKey annotation: @Entity public class