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public interface ObjectIdentity
Interface representing the identity of an individual domain object instance.
As implementations are used as the key for caching and lookup, it is
essential that implementations provide methods so that object-equality
rather than reference-equality can be relied upon by caches. In other
words, a cache can consider two ObjectIdentity
s equal if
identity1.equals(identity2)
, rather than reference-equality of
identity1==identity2
.
Method Summary | |
---|---|
boolean |
equals(Object obj)
Refer to the java.lang.Object documentation for the interface contract. |
Serializable |
getIdentifier()
Obtains the actual identifier. |
Class |
getJavaType()
Obtains the Java type represented by the domain object. |
int |
hashCode()
Refer to the java.lang.Object documentation for the interface contract. |
Method Detail |
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boolean equals(Object obj)
java.lang.Object
documentation for the interface contract.
equals
in class Object
obj
- to be compared
true
if the objects are equal, false
otherwiseSerializable getIdentifier()
javaType
.Because ACLs are largely immutable, it is strongly recommended to use a synthetic identifier (such as a database sequence number for the primary key). Do not use an identifier with business meaning, as that business meaning may change.
javaType
Class getJavaType()
int hashCode()
java.lang.Object
documentation for the interface contract.
hashCode
in class Object
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