-Entity (Oracle - Berkeley DB Java API) -

-Indicates a persistent entity class. For each entity class, a PrimaryIndex can be used to store and access instances of that class. - Optionally, one or more SecondaryIndex objects may be used to access +

+
+
+
```
@Documented
+@Retention(value=RUNTIME)
+@Target(value=TYPE)
+public @interface Entity
```
+
Indicates a persistent entity class. For each entity class, a PrimaryIndex can be used to store and access instances of that class. + Optionally, one or more SecondaryIndex objects may be used to access entity instances by secondary key.
Entity Subclasses and Superclasses
@@ -158,9 +147,9 @@ Indicates a persistent entity class. For each entity class, a registerClass method may be called +
The registerClass method may be called to register the subclass before opening the entity store.
The getSubclassIndex method may be +
The getSubclassIndex method may be called to implicitly register the subclass after opening the entity store.

BigDecimal

BigInteger
-
String
-
Date
+
BigDecimal
+
BigInteger
+
String
+
Date

When null values are required (for optional key fields, for example), @@ -206,8 +195,8 @@ Indicates a persistent entity class. For each entity class, a Complex and Proxy Types

Complex persistent classes must be annotated with Entity or - Persistent, or must be proxied by a persistent proxy class +

Complex persistent classes must be annotated with Entity or + Persistent, or must be proxied by a persistent proxy class (described below). This includes entity classes, subclasses and superclasses, and all other complex classes referenced via fields of these classes.

@@ -220,21 +209,21 @@ Indicates a persistent entity class. For each entity class, a PersistentProxy class may be used to + library. In this case, a PersistentProxy class may be used to represent the stored values for the externally defined type. The proxy - class itself must be annotated with Persistent like other persistent - classes, and the Persistent.proxyFor() property must be specified.

+ class itself must be annotated with Persistent like other persistent + classes, and the Persistent.proxyFor() property must be specified.

For convenience, built-in proxy classes are included for several common classes (listed below) in the Java library. If you wish, you may define - your own PersistentProxy to override these built-in proxies.

+ your own PersistentProxy to override these built-in proxies.

HashSet
TreeSet
HashMap
TreeMap
ArrayList
LinkedList
HashSet
TreeSet
HashMap
TreeMap
ArrayList
LinkedList

Complex persistent types should in general be application-defined @@ -245,16 +234,16 @@ Indicates a persistent entity class. For each entity class, a Persistent not - with Entity).

+ types or non-entity persistent types (annotated with Persistent not + with Entity).

Entity classes, subclasses and superclasses may be abstract and may implement arbitrary interfaces. Interfaces do not need to be annotated - with Persistent in order to be used in a persistent class, since + with Persistent in order to be used in a persistent class, since interfaces do not contain instance fields.

Persistent instances of static nested classes are allowed, but the nested - class must be annotated with Persistent or Entity. Inner + class must be annotated with Persistent or Entity. Inner classes (non-static nested classes, including anonymous classes) are not currently allowed as persistent types.

@@ -299,122 +288,136 @@ Indicates a persistent entity class. For each entity class, a Persistent, -PrimaryKey, -SecondaryKey, -KeyField -

- -

+ refer to two separate instances when the entities are retrieved.

See Also:: Persistent, +PrimaryKey, +SecondaryKey, +KeyField

+ + +

-Optional Element Summary
- `int`	`version` - - - Identifies a new version of a class when an incompatible class change - has been made.

Optional Elements
Modifier and Type	Optional Element and Description
`int`	`version` + Identifies a new version of a class when an incompatible class change + has been made. +

+ +
- + + +
  Element Detail
  + + + +
  - +
    version
    +
```
public abstract int version
```
    +
    Identifies a new version of a class when an incompatible class change has been made. Prior versions of a class are referred to by version - number to perform class evolution and conversion using Mutations. + number to perform class evolution and conversion using Mutations. -
    The first version of a class is version zero, if version() is +
    The first version of a class is version zero, if version() is not specified. When an incompatible class change is made, a version - number must be assigned using version() that is higher than the - previous version number for the class. If this is not done, an IncompatibleClassException will be thrown when the store is opened.
    -
    -
    -
    -
    -
    -
    -
    -
    Default:
    0
    -
    - + number must be assigned using version() that is higher than the + previous version number for the class. If this is not done, an IncompatibleClassException will be thrown when the store is opened.
    +
    +
    Default:
    +
    0
    +
    +
  +
+

- -com.sleepycat.persist.model -
-Annotation Type Entity

Annotation Type Entity

-version

Optional Element Summary

Element Detail

version