About ORDER BY

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Manual
14

JPA / JDO Class Enhancer

ObjectDB Enhancer is a post compilation tool that improves performance by modifying the byte code ... (and actually required by JPA but not enforced by ObjectDB) to avoid accessing persistent fields ... . by using the get and set methods). If you follow this practice only user defined persistable
Manual
13

Storing JPA Entity Objects [2011-05-04]

New entity objects can be stored in the database either explicitly by invoking the persist method ... is committed. An IllegalArgumentException is thrown by persist if the argument is not an instance ... is thrown. The exception is thrown either by persist (if that existing entity object is currently
Manual
13

Storing JPA Entity Objects

New entity objects can be stored in the database either explicitly by invoking the persist method ... is committed. An IllegalArgumentException is thrown by persist if the argument is not an instance ... is thrown. The exception is thrown either by persist (if that existing entity object is currently
Manual
13

Storing JPA Entity Objects [2019-08-09]

New entity objects can be stored in the database either explicitly by invoking the persist method ... is committed. An IllegalArgumentException is thrown by persist if the argument is not an instance ... is thrown. The exception is thrown either by persist (if that existing entity object is currently
Manual
13

JPA Criteria API Queries

, having, count, sum, avg, min, max, ...). ORDER BY clause (orderBy, Order, asc, desc). The links ... , are defined by instantiation of Java objects that represent query elements. A major advantage of using ... factory of criteria queries and criteria query elements. It can be obtained either by
Manual
13

Paths and Types in JPQL and Criteria API [2014-05-31]

classes) are represented in JPQL by the following types of expressions: Variables - FROM ... and functions (e.g. for strings and for numbers), they can be compared by all six comparison operators, and they can be used in ordering. Navigation through Path Expressions A path expression always starts
Manual
13

Paths and Types in JPQL and Criteria API

classes) are represented in JPQL by the following types of expressions: Variables - FROM ... and functions (e.g. for strings and for numbers), they can be compared by all six comparison operators, and they can be used in ordering. Navigation through Path Expressions A path expression always starts
Manual
12

Shared (L2) Entity Cache [2011-09-20]

an entity object that is already managed by the EntityManager returns the existing instance from ... by the EntityManagerFactory and shared by all its EntityManager objects. the broader scope ... is wider, since they exist per database and are shared by all the EntityManagerFactory and EntityManager
Manual
12

FROM clause (JPQL / Criteria API)

at the WHERE clause level by using a type expression. For example, in the following query, c iterates ... , and the same query can also be written as follows: SELECT c FROM Country c By default, the name ... name). The default name can be overridden by specifying another name explicitly in the @Entity's
Manual
12

Shared (L2) Entity Cache

an entity object that is already managed by the EntityManager returns the existing instance from ... by the EntityManagerFactory and shared by all its EntityManager objects. the broader scope ... is wider, since they exist per database and are shared by all the EntityManagerFactory and EntityManager