About Criteria API
JPA Criteria API Queries
Explains how to use the JPA Criteria API (CriteriaBuilder, CriteriaQuery, etc.) to build JPQL like queries. The JPA Criteria API provides an alternative way for defining JPA queries, which is mainly ... page covers the following topics: JPA Criteria API vs JPQL First JPA Criteria Query ...
JPA Query Structure (JPQL / Criteria)
Explains the structure of a JPQL query, which consists of 6 clauses: SELECT, FROM, WHERE, GROUP BY, HAVING, ORDER BY.... the following pages: SELECT clause (JPQL / Criteria API) FROM clause (JPQL / Criteria API) WHERE clause (JPQL / ...
FROM clause (JPQL / Criteria API)
Explains how to use the FROM clause and JOIN expressions in a JPA/JPQL query.... Reserved Identifiers FROM and JOIN in Criteria Queries Range Variables Range variables ... are all invalid variable names. FROM and JOIN in Criteria Queries FROM query identification variables are represented in ...
JPA Query Expressions (JPQL / Criteria)
Describes JPA query (JPQL / Criteria API) expressions (literals, operators and functions).... Query expressions are the foundations on which JPQL and criteria queries are built. Every query consists of clauses - ... Queries Paths and Types in JPQL and Criteria API Numbers in JPQL and Criteria Queries Strings in JPQL and ...
JPA Queries
Reference (JavaDoc) of all the JPA query types, including Query, TypedQuery, CriteriaBuilder, CriteriaQuery, Tuple, Root, Expression, Order, etc.... The JPA Query API section (in chapter 4 of the ObjectDB manual) provides detailed ... queries (e.g. "SELECT c FROM Country" ). Criteria Query API Building dynamic queries whose structure is only ... a valid complete JPQL query. JPA 2 introduced the JPA Criteria Query API , as a cleaner alternative that enables building a dynamic ...
SELECT clause (JPQL / Criteria API)
Explains how to use the SELECT clause and projections in a JPA/JPQL query.... SELECT DISTINCT SELECT in Criteria Queries Projection of Path Expressions ... SELECT in Criteria Queries The criteria query API provides several ways for setting the SELECT clause. Single ...
Criteria Query From Elements
Reference (JavaDoc) of JPA query criteria FROM clause interfaces, including From, Root, Join and Fetch. The interfaces in this group are in use for setting a criteria query FROM clause. Criteria Query Variables The FROM clause in JPA queries (as in ...
WHERE clause (JPQL / Criteria API)
Explains how to use the WHERE clause in a JPQL query.... JPQL Expressions in WHERE WHERE in Criteria Queries How a WHERE Clause Works The ... especially dominant in the WHERE clause. WHERE in Criteria Queries The CriteriaQuery ... :p can be built by using the criteria query API as follows: CriteriaQuery ...
Criteria Query Expressions
Reference (JavaDoc) of JPA query expression interfaces, including Expression, Predicate, Path, ParameterExpression and Subquery.... are in use in representing general expressions in criteria queries: javax.persistence.criteria.Expression javax.persistence.criteria.Predicate javax.persistence.criteria.Path ...
Criteria Query Selection and Results
Reference (JavaDoc) of JPA query criteria result interfaces, including Selection, CompoundSelection, Order and Tuple. The JPA Criteria API interfaces in this group are in use for setting the SELECT and ORDER BY ... Elements The content of the SELECT clause in a criteria query is represented by Selection : ...
