Package com.blazebit.persistence.view.change

Interface SingularChangeModel<E>

Type Parameters:

E - The element type represented by the change model

All Superinterfaces:

ChangeModel<E>

public interface SingularChangeModel<E>
extends ChangeModel<E>

An interface for accessing the dirty state of an object.

Since:

1.2.0

Author:

Christian Beikov

Nested Class Summary

Nested classes/interfaces inherited from interface com.blazebit.persistence.view.change.ChangeModel

ChangeModel.ChangeKind

Method Summary

Modifier and Type	Method	Description
<K,V> MapChangeModel<K,V>	get(MapAttribute<E,K,V> attribute)	Returns the change model for the attribute.
<V,C extends java.util.Collection<V>> PluralChangeModel<C,V>	get(PluralAttribute<E,C,V> attribute)	Returns the change model for the attribute.
<X> SingularChangeModel<X>	get(SingularAttribute<E,X> attribute)	Returns the change model for the attribute.
<X> ChangeModel<X>	get(java.lang.String attributePath)	Returns the change model for the attribute.
<X> java.util.List<? extends ChangeModel<X>>	getAll(java.lang.String attributePath)	Returns the change model for the attribute.
java.util.List<ChangeModel<?>>	getDirtyChanges()	Returns the change models of the dirty nested attributes.
boolean	isChanged(java.lang.String attributePath)	Returns whether the target attribute path was changed by updating or mutating it, but still has the same identity regarding parent objects it is contained in.
boolean	isDirty(java.lang.String attributePath)	Returns whether the change model for the attribute is dirty.

Methods inherited from interface com.blazebit.persistence.view.change.ChangeModel

getCurrentState, getInitialState, getKind, isDirty

Method Detail

getDirtyChanges

java.util.List<ChangeModel<?>> getDirtyChanges()

Returns the change models of the dirty nested attributes.

Returns:

The dirty change models

Throws:

java.lang.IllegalStateException - if invoked on a change model that corresponds to a basic attribute

get

<X> ChangeModel<X> get(java.lang.String attributePath)

Returns the change model for the attribute.

Type Parameters:

X - The element type of the target attribute path

Parameters:

attributePath - The name of the attribute or path to sub-attribute

Returns:

The change model for the attribute

Throws:

java.lang.IllegalStateException - if invoked on a change model that corresponds to a basic attribute

java.lang.IllegalArgumentException - if attribute of the given name does not otherwise exist

getAll

<X> java.util.List<? extends ChangeModel<X>> getAll(java.lang.String attributePath)

Returns the change model for the attribute.

Type Parameters:

X - The element type of the target attribute path

Parameters:

attributePath - The name of the attribute or path to sub-attribute

Returns:

The change model for the attribute

Throws:

java.lang.IllegalStateException - if invoked on a change model that corresponds to a basic attribute

java.lang.IllegalArgumentException - if attribute of the given name does not otherwise exist

get

<X> SingularChangeModel<X> get(SingularAttribute<E,X> attribute)

Returns the change model for the attribute.

Type Parameters:

X - The element type of the singular attribute

Parameters:

attribute - The singular attribute

Returns:

The change model for the attribute

get

<V,C extends java.util.Collection<V>> PluralChangeModel<C,V> get(PluralAttribute<E,C,V> attribute)

Returns the change model for the attribute.

Type Parameters:

C - The container type of the plural attribute

V - The value type of the plural attribute

Parameters:

attribute - The collection attribute

Returns:

The change model for the attribute

get

<K,V> MapChangeModel<K,V> get(MapAttribute<E,K,V> attribute)

Returns the change model for the attribute.

Type Parameters:

K - The key type of the map attribute

V - The value type of the map attribute

Parameters:

attribute - The map attribute

Returns:

The change model for the attribute

isDirty

boolean isDirty(java.lang.String attributePath)

Returns whether the change model for the attribute is dirty. Essentially, this is a more efficient short-hand for get(attributePath).isDirty().

Parameters:

attributePath - The name of the attribute or path to sub-attribute

Returns:

True if the change model for the attribute path is dirty, false otherwise

Throws:

java.lang.IllegalStateException - if invoked on a change model that corresponds to a basic attribute

java.lang.IllegalArgumentException - if attribute of the given name does not otherwise exist

isChanged

boolean isChanged(java.lang.String attributePath)

Returns whether the target attribute path was changed by updating or mutating it, but still has the same identity regarding parent objects it is contained in. If any of the parent objects as denoted by the attribute path are updated i.e. the identity was changed, this returns true. Mutations or updates to the target object also cause true to be returned. In all other cases, this method returns false.

Parameters:

attributePath - The name of the attribute or path to sub-attribute

Returns:

True if the attribute was changed, false otherwise

Throws:

java.lang.IllegalStateException - if invoked on a change model that corresponds to a basic attribute

java.lang.IllegalArgumentException - if attribute of the given name does not otherwise exist