About types

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Manual
7

WHERE clause (JPQL / Criteria API)

a variable number of arguments of Predicate type and uses an AND conjunction as the WHERE clause content
Manual
7

Logical Operators in JPQL and Criteria API

> that represents many operator and function expressions whose type is boolean - such as comparison operators
Manual
7

Retrieving JPA Entity Objects

using a lazy fetch type: @Entity class Employee { : @ManyToOne(fetch=FetchType.LAZY
Manual
7

Shared (L2) Entity Cache

type and primary key: em.find(MyEntity2.class, Long.valueOf(1),      Collections.
Manual
7

CRUD Database Operations with JPA

. The TypedQuery interface, which was introduced in JPA 2, is a type safe subinterface of Query
JPA Doc
7

JPA Queries

a cleaner alternative that enables building a dynamic query by using instances of special types
JPA Doc
7

javax.persistence.criteria.AbstractQuery

: entity - metamodel entity representing the entity of type X Returns: query root corresponding ... > getResultType() Return the result type of the query or subquery. Return the result type of the query or subquery. If a result type was specified as an argument to the createQuery or subquery method
JPA Doc
6

javax.persistence.criteria.Expression

, ParameterExpression, Path, PluralJoin, Predicate, Root, SetJoin, Subquery Type for query expressions ... . Parameters: name - alias Returns: selection item Since: JPA 2.0 Expression as(Class type ... upon the expression, returning a new expression object. This method does not cause type conversion
JPA Doc
6

javax.persistence.criteria.Predicate

, TupleElement Subinterfaces: In The type of a simple or compound predicate ... (Class type) Perform a typecast upon the expression, returning a new expression object. Perform a typecast upon the expression, returning a new expression object. This method does not cause type
JPA Doc
6

javax.persistence.MapKeyEnumerated

) Specifies the enum type for a map key whose basic type is an enumerated type. The MapKeyEnumerated annotation can be applied to an element collection or relationship of type java.util.Map, in conjunction with the ElementCollection, OneToMany, or ManyToMany annotation. If the enumerated type is not