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JPA Doc
4

javax.persistence.EntityManager

on the EntityManager instance and any Query and TypedQuery objects obtained from it will throw ... is found to be invalid Since: JPA 2.0 void detach(Object entity) Remove the given entity from the persistence context, causing a managed entity to become detached. Remove the given entity from
JDO Doc
4

javax.jdo.spi.JDOImplHelper

to an outside source from the key fields in the ObjectId. Copy fields to an outside source from ...  pcClass, ObjectIdFieldSupplier fm, 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
Manual
3

Numbers in JPQL and Criteria Queries

on an int value and a double value is double. The ABS Function The ABS function removes the minus sign from
JDO Doc
3

JDO Reference (JavaDoc) [2018-08-18]

This reference contains the API documentation (similar to JavaDoc) of JDO 2.2. The content is derived from the original JDO documentation with some additions and notes. The most basic JDO types are: All the other JDO types are organized into the following sections:
JPA Doc
3

JPA Exceptions

to retrieve entity objects from the database. For example, when a required entity object is not found: or
Result
3

Posting to ObjectDB Website - Important Instructions

query = em.createQuery("SELECT e FROM MyEntity e");         List resultList = query.getResultList
JPA Doc
3

JPA Reference (JavaDoc) [2018-08-18]

This reference contains the API documentation (similar to JavaDoc) of the Java Persistence API (JPA) 2.0. The content is derived from the original JPA documentation (in the EclipseLink JPA 2 RI) with some additions and notes. The four most basic JPA types are: All the other JPA types are organized
Tutorial
3

Step 1: Create a Web Project

and select Add Jar/Folder... Select the objectdb.jar file from the bin subdirectory of the ObjectDB
Manual
3

JPA Query Expressions (JPQL / Criteria)

Query expressions are the foundations on which JPQL and criteria queries are built. Every query consists of clauses - SELECT, FROM, WHERE, GROUP BY, HAVING and ORDER BY, and each clause consists of JPQL / Criteria query expressions. Atomic Expressions The atomic query expressions are: JPQL
Tutorial
3

Step 1: Create a Web Project

file from the file system and dropping it on the WEB-INF/lib node in the Eclipse Project Explorer