 193 | 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 |
183 | 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 |
165 | The following interfaces and enum represent types in the JPA Metamodel API: See the Metamodel Type Interface Hierarchy section for more details and examples. |
125 | This section contains miscellaneous JDO types: |
70 | 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 |
59 | 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 |
46 | 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 |
41 | 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 |
41 | 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 |
40 | ( 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 |
