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Manual
213

JPA Persistable Types

The term persistable types refers to data types that can be used in storing data in the database. ObjectDB supports all the JPA persistable types, which are: User defined classes - Entity classes, Mapped superclasses, Embeddable classes. Simple Java data types: Primitive types, Wrappers, String
Manual
203

Paths and Types in JPQL and Criteria API

classes) are represented in JPQL by the following types of expressions: Variables - FROM ... . But more often they are used in JPQL path expressions that navigate to values of simple types (number, boolean, string, date). Simple type values are more useful in queries. They have special operators
JPA Doc
184

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.
JDO Doc
139

JDO Miscellaneous Types

This section contains miscellaneous JDO types:
Manual
76

JPA Metamodel API

reflection provides for general Java types. The Metamodel Interface The main interface of the JPA ... (); The Metamodel interface provides several methods for exploring user defined persistable types (which are referred to as managed types) in the persistent object model. Three methods can be used
Manual
64

Literals in JPQL and Criteria Queries

Literals in JPQL, as in Java, represent constant values. JPQL supports various types of literals ... . 'abc'), enum literals (e.g. mypackage.MyEnum.MY_VALUE) and entity type literals (e.g. Country). JPQL ... values, but the fully qualified name of the enum type should always be specified. For example, assuming
JPA Doc
50

JPA Metamodel API

of the JPA Metamodel API is: Types (mainly classes) and attributes (persistent field and properties) in the persistent object model are represented by the following sets of interfaces and enum types
JPA Doc
46

javax.persistence.metamodel.Type.PersistenceType

javax.persistence.metamodel Enum Type.PersistenceType java.lang.Object java.lang.EnumType.PersistenceType> javax.persistence.metamodel.Type.PersistenceType ... BASIC Basic type Basic type Since: JPA 2.0 PersistenceType EMBEDDABLE Embeddable class Embeddable class
JPA Doc
45

javax.persistence.metamodel.Type

javax.persistence.metamodel Interface Type Subinterfaces: BasicType, EmbeddableType, EntityType, IdentifiableType, ManagedType, MappedSuperclassType Instances of the type Type represent persistent object or attribute types. Since: JPA 2.0 Class getJavaType() Return the represented Java type
JPA Doc
45

getDeclaredSingularAttribute(name, type)

(   String name,   Class type ) Return the single-valued attribute declared by the managed type that corresponds to the specified name and Java type. Parameters: name - the name of the represented attribute type - the type of the represented attribute Returns: declared single-valued attribute