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JPA Annotation Attribute in javax.persistence.PersistenceContexts PersistenceContext [] value default null (Required) One or more PersistenceContext annotations. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.SequenceGenerators SequenceGenerator [] value default null Since: JPA 2.2

JPA Annotation Attribute in javax.persistence.Cacheable boolean value default true (Optional) Whether or not the entity should be cached. Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.SecondaryTables SecondaryTable [] value default null (Required) The secondary tables for an entity. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.EntityListeners Class[] value default null The callback listener classes Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.Temporal TemporalType value default null The type used in mapping java.util.Date or java.util.Calendar . Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.TableGenerators TableGenerator [] value default null Since: JPA 2.2

JPA Annotation Attribute in javax.persistence.Access AccessType value default null (Required) Specification of field- or property-based access. Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.OrderBy String value default "" An orderby_list . Specified as follows: orderby_list::= orderby_item [,orderby_item] orderby_item::= [property_or_field_name] [ASC | DESC] If ASC or DESC is not specified, ASC (ascending order) is assumed

JPA Annotation Attribute in javax.persistence.AttributeOverrides AttributeOverride [] value default null (Required) One or more field or property mapping overrides. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.Enumerated EnumType value default ORDINAL (Optional) The type used in mapping an enum type. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.Converts Convert [] value default null The Convert mappings that are to be applied. Since: JPA 2.1

JPA Annotation Attribute in javax.persistence.SqlResultSetMappings SqlResultSetMapping [] value default null One or more SqlResultSetMapping annotations. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.NamedEntityGraphs NamedEntityGraph [] value default null Since: JPA 2.1

JPA Annotation Attribute in javax.persistence.NamedNativeQueries NamedNativeQuery [] value default null (Required) Array of NamedNativeQuery annotations. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.MapKeyTemporal TemporalType value default null (Required) The type used in mapping java.util.Date or java.util.Calendar . Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.NamedAttributeNode String value default null (Required) The name of the attribute that must be included in the graph. Since: JPA 2.1

JPA Annotation Attribute in javax.persistence.IdClass Class value default null Primary key class Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.MapsId String value default "" (Optional) The name of the attribute within the composite key to which the relationship attribute corresponds. If not supplied, the relationship maps the entity's primary key. Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.metamodel.StaticMetamodel Class value default null Class being modelled by the annotated class. Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.MapKeyJoinColumns MapKeyJoinColumn [] value default null (Required) The map key join columns that are used to map to the entity that is the map key. Since: JPA 2.0

entity object is initialized using the value of the matching old field in the original entity object ... with default values ( 0 , false or null ). Fields in the old schema that do not have matching fields in ... with a default value ( 0 , false or null ). The following type conversions are supported: From any numeric

The element specifies enhancement related settings: The agent attribute (whose value is "true" or "false ... . The possible values of the reflection attribute represent different policies: "error" - all persistable ... (which serves as a first level cache). The valid values are "weak" , "soft " and "strong ". Modified

Literals in JPQL, as in Java, represent constant values . JPQL supports various types of literals ... (e.g. 'abc' ), enum literals (e.g. mypackage.MyEnum.MY_ VALUE ) and entity type literals (e.g. Country ... parameter values . Literals should only be embedded in JPQL queries when a single constant value

the cache a positive value has to be specified. Persistence Unit Settings The shared cache ... to one of the following values : NONE - cache is disabled. ENABLE_SELECTIVE - cache is disabled ... . UNSPECIFIED - handled differently by different JPA providers. In ObjectDB the UNSPECIFIED value

. 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 ... and values . For example - c.capital , where c represents a Country entity object uses the capital

path expressions , such as c.name , in query results is referred to as projection. The field values ... of the above query are received as a list of String values : TypedQuery query = em. createQuery ( "SELECT ... value path expressions can be used in the SELECT clause. Collection and map fields cannot be included

directory. ObjectDB Home ($objectdb) The value of $objectdb (the ObjectDB home directory ... changes the value of $objectdb . For example, in a web application, in which objectdb.jar is located in ... file is not found default values are used. General Configuration Considerations The following rules

String values may appear in JPQL queries in various forms: as  string literals - e.g. 'abc' , ''. as parameters - when string values are assigned as arguments. as  path expressions - in ... for 'Denmark' c.name LIKE '%' is always TRUE (for any c.name value ). c.name NOT LIKE '%' is always FALSE

the required name attribute, to the new name. The value of the name attribute must be unqualified (with no package name) because the package name is already specified in the containing element. The value ... ) the new-name value of the containing element is used, if it exists, or if no new-name is specified

a hyphen (-) to indicate a range. For example, a value "192.18.0.0-192.18.194.255,127.0.0.1" allows ... . The admin attribute (whose value is "true" or "false" ) specifies if the user is a superuser. A superuser is authorized to manage server settings using the ObjectDB Explorer . A value of "$default

). Map keys and values are indexable. Nested paths inside embedded objects are indexable. Indices ... .lang.BigDecimal. Auto Value Generation Modes (for primary Key fields) Database IDs - automatic ... defined sequences. Application IDs - primary key values are set explicitly by the application. Query

to be visible to the query. Flush policy in JPA is represented by the FlushModeType enum, which has two values ... ="javax.persistence.query.timeout",      value ="7000")}) For a specific query

rather than just field values from database tables, as with SQL. That makes JPQL more object oriented friendly ... , string literals are also case sensitive (e.g. "ORM" and "orm" are different values ). A Minimal JPQL

of the point in the plane). It is the values of these fields that are stored in the database ... primary keys and automatic sequential value generation . This is a very powerful feature of ObjectDB that is absent from other object oriented databases.

public class GuestController { @Autowired private GuestDao guestDao; @RequestMapping( value ="/guest ... a request attribute (whose name is "guestDao" and its value is guestDao ). The next step is 

{ @Autowired private GuestDao guestDao; @RequestMapping( value ="/guest") public ModelAndView guestbook ... is "guestDao" and its value is guestDao ). The next step is adding a JSP page that will serve as

JDO Annotation Attribute in javax.jdo.annotations. Value Extension [] extensions default {} Vendor extensions. Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations.Cacheable String value default "true" Since: JDO 2.2

JDO Annotation Attribute in javax.jdo.annotations.Columns Column [] value default null The columns annotation information. Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations.Indices Index [] value default null The indices Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations.ForeignKeys ForeignKey [] value default null The foreign keys. Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations.Extensions Extension [] value default null The extensions. Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations.FetchPlans FetchPlan[] value default null The Fetch Plans Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations.FetchGroups FetchGroup[] value default null The Fetch Groups Since: JDO 2.1

JDO Enum Constant in javax.jdo.annotations.DiscriminatorStrategy VALUE _MAP Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations.Queries Query[] value default null The named queries Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations.Query String value default null The query string (mandatory) Since: JDO 2.1

) Of course, persistent fields should not hold non persistent values at runtime when the object ... value . Similarly, a field whose type is one of the persistent collection interfaces ( Collection , Set ... a method or by getting its value as an argument to a method, on the other hand, does not make the class

different values . Using temporary IDs instead of allocating permanent object IDs immediately ... , in which passing string values between web pages is easier than passing real object ID instances. In ... string, but also a Class instance. ObjectDB ignores the first argument. Therefore, a null value