About types

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Manual
154

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
144

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
127

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
125

JDO Miscellaneous Types

This section contains miscellaneous JDO types:
JPA Doc
41

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
41

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
40

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
JPA Doc
40

getSingularAttribute(name, type)

(   String name,   Class type ) Return the single-valued attribute of 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: single-valued attribute with given name and type
JDO Doc
40

Persistent.types

Annotation Element javax.jdo.annotations.Persistent Class[] types Types of the member. Used when the declared member type is a supertype of the actual type that is stored in the member. For example, the declared member type might be an interface type that must contain an object of a concrete type
JPA Doc
40

as(type)

Method javax.persistence.criteria.Expression Expression as(   Class type ) Perform a typecast upon the expression, returning a new expression object. This method does not cause type conversion: the runtime type is not changed. Warning: may result in a runtime failure. Parameters: type