org.hibernate.validator.constraints

Annotation Type UniqueElements

@Documented
 @Constraint(validatedBy={})
 @Target(value={METHOD,FIELD,ANNOTATION_TYPE,CONSTRUCTOR,PARAMETER,TYPE_USE})
 @Retention(value=RUNTIME)
 @Repeatable(value=UniqueElements.List.class)
public @interface UniqueElements

Validates that every object in the provided Collection is unique, i.e. that we can't find 2 equal elements in the collection.

For instance, this can be useful with JAX-RS, which always deserializes collections to a list. Thus, duplicates would implicitly and silently be removed when converting it to a set. This constraint allows you to check for duplicates in the list and to raise an error instead.

Since:

6.0.5

Author:

Tadhg Pearson

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
Class<?>[]	groups
String	message
Class<? extends Payload>[]	payload

Element Detail

message

public abstract String message

Default:

"{org.hibernate.validator.constraints.UniqueElements.message}"

groups

public abstract Class<?>[] groups

Default:

{}

payload

public abstract Class<? extends Payload>[] payload

Default:

{}