com.amazon.carbonado

Annotation Type Key

@Documented
@Retention(value=RUNTIME)
@Target(value={})
public @interface Key

Identifies a Storable property as being a member of an alternate key. An alternate key is just as good as the primary key for uniquely identifying a storable instance, except repositories are usually more flexible with alternate keys. For example, dropping an alternate key and reconstructing it should not result in loss of data. Alternate keys are often implemented as indexes with a uniqueness constraint.

Author:

Brian S O'Neill

See Also:

AlternateKeys

Required Element Summary

Required Elements

Modifier and Type	Required Element and Description
java.lang.String[]	value A list of property names, which may be prefixed with '+' or '-' to indicate a preference for ascending or descending order.

Element Detail

value

public abstract java.lang.String[] value

A list of property names, which may be prefixed with '+' or '-' to indicate a preference for ascending or descending order.