Module dev.metaschema.core

Package dev.metaschema.core.model.constraint

Interface IUniqueConstraint

All Superinterfaces:

IAttributable, IConfigurableMessageConstraint, IConstraint, IDescribable, IKeyConstraint

public interface IUniqueConstraint
extends IKeyConstraint

Represents a rule that requires all matching data items found in a Metaschema data instance to have a unique key.

This rule is similar to the IIndexConstraint in how the keys are generated, but this constraint type does not persist a named index.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static final class	IUniqueConstraint.Builder	Provides a builder pattern for constructing a new IUniqueConstraint.

Nested classes/interfaces inherited from interface dev.metaschema.core.model.IAttributable

IAttributable.Key

Nested classes/interfaces inherited from interface dev.metaschema.core.model.constraint.IConstraint

IConstraint.Level, IConstraint.Type

Field Summary

Fields inherited from interface dev.metaschema.core.model.IAttributable

DEFAULT_PROPERY_NAMESPACE

Method Summary

Modifier and Type	Method	Description
default <T, R> R	accept(IConstraintVisitor<T,R> visitor, T state)	Used for double dispatch supporting the visitor pattern provided by implementations of IConstraintVisitor.
static IUniqueConstraint.Builder	builder()	Create a new constraint builder.
default IConstraint.Type	getType()	Get the constraint type.

Methods inherited from interface dev.metaschema.core.model.IAttributable

getProperties, getPropertyValues, hasProperty, hasPropertyValue

Methods inherited from interface dev.metaschema.core.model.constraint.IConfigurableMessageConstraint

generateMessage, getMessage

Methods inherited from interface dev.metaschema.core.model.constraint.IConstraint

getId, getLevel, getRemarks, getSource, getTarget, matchTargets

Methods inherited from interface dev.metaschema.core.model.IDescribable

getDescription, getEffectiveDescription, getEffectiveFormalName, getFormalName

Methods inherited from interface dev.metaschema.core.model.constraint.IKeyConstraint

getKeyFields

Method Details

getType

default IConstraint.Type getType()

Description copied from interface: IConstraint

Get the constraint type.

Specified by:

getType in interface IConstraint

Returns:

the constraint type

accept

default <T,
R> R accept(IConstraintVisitor<T,R> visitor,
 T state)

Description copied from interface: IConstraint

Used for double dispatch supporting the visitor pattern provided by implementations of IConstraintVisitor.

Specified by:

accept in interface IConstraint

Type Parameters:

T - the Java type of a state object passed to the visitor

R - the Java type of the result returned by the visitor methods

Parameters:

visitor - the visitor implementation

state - the state object passed to the visitor

Returns:

the visitation result

See Also:

• IConstraintVisitor

builder

@NonNull
static IUniqueConstraint.Builder builder()

Create a new constraint builder.

Returns:

the builder