Package org.springframework.data.web

Class SlicedResourcesAssembler<T>

java.lang.Object

org.springframework.data.web.SlicedResourcesAssembler<T>

All Implemented Interfaces:

RepresentationModelAssembler<Slice<T>,SlicedModel<EntityModel<T>>>

public class SlicedResourcesAssembler<T>
extends Object
implements RepresentationModelAssembler<Slice<T>,SlicedModel<EntityModel<T>>>

RepresentationModelAssembler to easily convert Slice instances into SlicedModel.

Since:

3.1

Author:

Michael Schout, Oliver Drotbohm

Constructor Summary

Constructors

Constructor	Description
SlicedResourcesAssembler(HateoasPageableHandlerMethodArgumentResolver resolver, UriComponents baseUri)	Creates a new SlicedResourcesAssembler using the given PageableHandlerMethodArgumentResolver and base URI.

Method Summary

Modifier and Type	Method	Description
protected <R extends RepresentationModel<?>, S> SlicedModel<R>	createSlicedModel(List<R> resources, SlicedModel.SliceMetadata metadata, Slice<S> slice)	Creates the SlicedModel to be equipped with pagination links downstream.
void	setForceFirstRel(boolean forceFirstRel)	Configures whether to always add first links to the SlicedModel * created.
SlicedModel<?>	toEmptyModel(Slice<?> slice, Class<?> type)	Creates a SlicedModel with an empty collection EmbeddedWrapper for the given domain type.
SlicedModel<?>	toEmptyModel(Slice<?> slice, Class<?> type, Optional<Link> link)
SlicedModel<?>	toEmptyModel(Slice<?> slice, Class<?> type, Link link)	Creates a SlicedModel with an empty collection EmbeddedWrapper for the given domain type.
SlicedModel<EntityModel<T>>	toModel(Slice<T> entity)
SlicedModel<EntityModel<T>>	toModel(Slice<T> slice, Link selfLink)	Creates a new SlicedModel by converting the given Slice into a SlicedModel.SliceMetadata instance and wrapping the contained elements into * SlicedModel instances.
<R extends RepresentationModel<?>> SlicedModel<R>	toModel(Slice<T> slice, RepresentationModelAssembler<T,R> assembler)	Creates a new SlicedModel by converting the given Slice into a SlicedModel.SliceMetadata instance and using the given SlicedModel to turn elements of the Slice into resources.
<R extends RepresentationModel<?>> SlicedModel<R>	toModel(Slice<T> slice, RepresentationModelAssembler<T,R> assembler, Link link)	Creates a new SlicedModel by converting the given Slice into a SlicedModel.SliceMetadata instance and using the given SlicedModel to turn elements of the Slice into resources.
SlicedResourcesAssembler<T>	withParameter(MethodParameter parameter)	Creates a new SlicedResourcesAssembler with the given reference MethodParameter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.hateoas.server.RepresentationModelAssembler

toCollectionModel

Constructor Details

SlicedResourcesAssembler

public SlicedResourcesAssembler(@Nullable
 HateoasPageableHandlerMethodArgumentResolver resolver,
 @Nullable
 UriComponents baseUri)

Creates a new SlicedResourcesAssembler using the given PageableHandlerMethodArgumentResolver and base URI. If the former is null, a default one will be created. If the latter is null, calls to toModel(Slice) will use the current request's URI to build the relevant previous and next links.

Parameters:

resolver - can be null.

baseUri - can be null.

Method Details

setForceFirstRel

public void setForceFirstRel(boolean forceFirstRel)

Configures whether to always add first links to the SlicedModel * created. Defaults to false which means that first links onlys appear in conjunction with prev and next links.

Parameters:

forceFirstRel - whether to always add first links to the SlicedModel created.

withParameter

public SlicedResourcesAssembler<T> withParameter(@Nullable
 MethodParameter parameter)

Creates a new SlicedResourcesAssembler with the given reference MethodParameter.

Parameters:

parameter - can be null.

Returns:

will never be null.

Since:

3.1

toModel

public SlicedModel<EntityModel<T>> toModel(Slice<T> entity)

Specified by:

toModel in interface RepresentationModelAssembler<Slice<T>,SlicedModel<EntityModel<T>>>

toModel

public SlicedModel<EntityModel<T>> toModel(Slice<T> slice,
 Link selfLink)

Creates a new SlicedModel by converting the given Slice into a SlicedModel.SliceMetadata instance and wrapping the contained elements into * SlicedModel instances. Will add pagination links based on the given self link.

Parameters:

slice - must not be null.

selfLink - must not be null.

Returns:

toModel

public <R extends RepresentationModel<?>>
SlicedModel<R> toModel(Slice<T> slice,
 RepresentationModelAssembler<T,R> assembler)

Creates a new SlicedModel by converting the given Slice into a SlicedModel.SliceMetadata instance and using the given SlicedModel to turn elements of the Slice into resources.

Parameters:

slice - must not be null.

assembler - must not be null.

Returns:

toModel

public <R extends RepresentationModel<?>>
SlicedModel<R> toModel(Slice<T> slice,
 RepresentationModelAssembler<T,R> assembler,
 Link link)

Creates a new SlicedModel by converting the given Slice into a SlicedModel.SliceMetadata instance and using the given SlicedModel to turn elements of the Slice into resources. Will add pagination links based on the given the self link.

Parameters:

slice - must not be null.

assembler - must not be null.

link - must not be null.

Returns:

toEmptyModel

public SlicedModel<?> toEmptyModel(Slice<?> slice,
 Class<?> type)

Creates a SlicedModel with an empty collection EmbeddedWrapper for the given domain type.

Parameters:

slice - must not be null, content must be empty.

type - must not be null.

Returns:

toEmptyModel

public SlicedModel<?> toEmptyModel(Slice<?> slice,
 Class<?> type,
 Link link)

Creates a SlicedModel with an empty collection EmbeddedWrapper for the given domain type.

Parameters:

slice - must not be null, content must be empty.

type - must not be null.

link - must not be null.

Returns:

toEmptyModel

public SlicedModel<?> toEmptyModel(Slice<?> slice,
 Class<?> type,
 Optional<Link> link)

createSlicedModel

protected <R extends RepresentationModel<?>,
S>
SlicedModel<R> createSlicedModel(List<R> resources,
 SlicedModel.SliceMetadata metadata,
 Slice<S> slice)

Creates the SlicedModel to be equipped with pagination links downstream.

Parameters:

resources - the original slices's elements mapped into RepresentationModel instances.

metadata - the calculated SlicedModel.SliceMetadata, must not be null.

slice - the original page handed to the assembler, must not be null.

Returns:

must not be null.