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Manual
199

FROM clause (JPQL / Criteria API)

Explains how to use the FROM clause and JOIN expressions in a JPA/JPQL query.
Manual
199

Logical Operators in JPQL and Criteria API

Explains how to use AND, OR and NOT in JPQL queries.
JPA Doc
198

JPA Metamodel API

The JPA Metamodel API, which is introduced in JPA 2.0, enables examining the classes, fields and properties of the persistent object model, similarly to the Java reflection API. The main interface of the JPA Metamodel API is: Types (mainly classes) and attributes (persistent field and properties
JPA Doc
182

JPA Metamodel API Attributes

The following interfaces and enum types represent attributes (persistent fields and properties) in the JPA Metamodel API: See the Metamodel Attribute Interface Hierarchy section for more details and examples.
JPA Doc
182

JPA Metamodel API Types

The following interfaces and enum represent types in the JPA Metamodel API:  See the Metamodel Type Interface Hierarchy section for more details and examples.
FAQ
171

ObjectDB APIs

All about ObjectDB APIs in Java/JPA database - explanations, examples, references, links and related information.
FAQ
54

Is ObjectDB better than competing object databases?

: ObjectDB is unique in supporting the standard APIs. It is the only object database with built in support for the Java Persistence API (JPA). It also supports a more recent and advanced version of the Java Data Objects (JDO) API than competing object databases. By using a standard API such as JPA
JPA Doc
52

JPA Queries

Queries are represented in JPA by the Query and TypedQuery interfaces: The JPA Query API section ... . "SELECT c FROM Country"). Criteria Query API Building dynamic queries with structure that is known ... concatenating JPQL strings into a valid complete JPQL query. JPA 2 introduced the JPA Criteria Query API, as
Manual
43

Chapter 4 - JPA Queries (JPQL / Criteria)

well as how to use the JPA Criteria API, which provides an alternative way for building queries in JPA, based on JPQL. The first section describes the API that JPA provides for using dynamic and static
JPA Doc
39

Criteria Query Selection and Results

The JPA Criteria API interfaces in this group are in use for setting the SELECT and ORDER BY clauses and for representing query results as tuples. SELECT Clause Elements The content of the SELECT clause in a criteria query is represented by Selection: Because Selection is a super interface