Package step.core.accessors

Class LayeredAccessor<T extends step.core.accessors.AbstractIdentifiableObject>

java.lang.Object

step.core.accessors.LayeredAccessor<T>

All Implemented Interfaces:

Accessor<T>

public class LayeredAccessor<T extends step.core.accessors.AbstractIdentifiableObject>
extends Object
implements Accessor<T>

Constructor Summary

Constructors

Constructor	Description
LayeredAccessor()
LayeredAccessor(List<? extends Accessor<T>> accessors)

Method Summary

Modifier and Type	Method	Description
void	addAccessor(Accessor<T> accessor)
T	findByAttributes(Map<String,String> attributes)	Find an object by default attributes.
T	findByAttributes(Map<String,String> attributes, String attributesMapKey)	Find an object by attributes.
T	findByCriteria(Map<String,String> criteria)	Find an object by criteria.
Spliterator<T>	findManyByAttributes(Map<String,String> attributes)	Find objects by attributes.
Spliterator<T>	findManyByAttributes(Map<String,String> attributes, String attributesMapKey)	Find objects by attributes.
Stream<T>	findManyByCriteria(Map<String,String> criteria)	Find objects by criteria.
T	get(String id)	Get an object by id
T	get(org.bson.types.ObjectId id)	Get an object by id
protected Accessor<T>	getAccessorForPersistence()
Iterator<T>	getAll()
List<T>	getRange(int skip, int limit)	Get the range of objects specified by the skip/limit parameters browsing the collection sorted by ID in the descending order
protected <V> V	layeredLookup(Function<Accessor<T>,V> f)
protected <V> Spliterator<V>	layeredMerge(Function<Accessor<T>,Spliterator<V>> f)
protected <V> Stream<V>	layeredStreamMerge(Function<Accessor<T>,Stream<V>> f)
void	pushAccessor(Accessor<T> accessor)
void	remove(org.bson.types.ObjectId id)	Remove an entity.
void	save(Iterable<T> entities)	Save a list of entities.
T	save(T entity)	Save an entity.
Stream<T>	stream()

Methods inherited from class java.lang.Object

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

Constructor Detail

LayeredAccessor

public LayeredAccessor()

LayeredAccessor

public LayeredAccessor(List<? extends Accessor<T>> accessors)

Method Detail

addAccessor

public void addAccessor(Accessor<T> accessor)

pushAccessor

public void pushAccessor(Accessor<T> accessor)

get

public T get(org.bson.types.ObjectId id)

Description copied from interface: Accessor

Get an object by id

Specified by:

get in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

id - the UID of the object

Returns:

the object

layeredLookup

protected <V> V layeredLookup(Function<Accessor<T>,V> f)

get

public T get(String id)

Description copied from interface: Accessor

Get an object by id

Specified by:

get in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

id - the UID of the object

Returns:

the object

findByCriteria

public T findByCriteria(Map<String,String> criteria)

Description copied from interface: Accessor

Find an object by criteria. If multiple objects match these criteria, the first one will be returned

Specified by:

findByCriteria in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

criteria - the map of mandatory criteria of the object to be found

Returns:

the object

findManyByCriteria

public Stream<T> findManyByCriteria(Map<String,String> criteria)

Description copied from interface: Accessor

Find objects by criteria.

Specified by:

findManyByCriteria in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

criteria - the map of mandatory criteria of the object to be found

Returns:

an Iterator for the objects found

findByAttributes

public T findByAttributes(Map<String,String> attributes)

Description copied from interface: Accessor

Find an object by default attributes. If multiple objects match these attributes, the first one will be returned

Specified by:

findByAttributes in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

attributes - the map of mandatory attributes of the object to be found

Returns:

the object

findManyByAttributes

public Spliterator<T> findManyByAttributes(Map<String,String> attributes)

Description copied from interface: Accessor

Find objects by attributes.

Specified by:

findManyByAttributes in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

attributes - the map of mandatory attributes of the object to be found

Returns:

an Iterator for the objects found

layeredStreamMerge

protected <V> Stream<V> layeredStreamMerge(Function<Accessor<T>,Stream<V>> f)

layeredMerge

protected <V> Spliterator<V> layeredMerge(Function<Accessor<T>,Spliterator<V>> f)

getAll

public Iterator<T> getAll()

Specified by:

getAll in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

findByAttributes

public T findByAttributes(Map<String,String> attributes,
                          String attributesMapKey)

Description copied from interface: Accessor

Find an object by attributes. If multiple objects match these attributes, the first one will be returned

Specified by:

findByAttributes in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

attributes - the map of mandatory attributes of the object to be found

attributesMapKey - the string representing the name (or "key") of the attribute map

Returns:

the object

findManyByAttributes

public Spliterator<T> findManyByAttributes(Map<String,String> attributes,
                                           String attributesMapKey)

Description copied from interface: Accessor

Find objects by attributes.

Specified by:

findManyByAttributes in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

attributes - the map of mandatory attributes of the object to be found

attributesMapKey - the string representing the name (or "key") of the attribute map

Returns:

an Iterator for the objects found

getRange

public List<T> getRange(int skip,
                        int limit)

Description copied from interface: Accessor

Get the range of objects specified by the skip/limit parameters browsing the collection sorted by ID in the descending order

Specified by:

getRange in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

skip - the start index (inclusive) of the range

limit - the size of the range

Returns:

a List containing the objects of the specified range

remove

public void remove(org.bson.types.ObjectId id)

Description copied from interface: Accessor

Remove an entity.

Specified by:

remove in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

id - id the entity

save

public T save(T entity)

Description copied from interface: Accessor

Save an entity. If an entity with the same id exists, it will be updated otherwise inserted.

Specified by:

save in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

entity - the entity instance to be saved

Returns:

the saved entity

save

public void save(Iterable<T> entities)

Description copied from interface: Accessor

Save a list of entities.

Specified by:

save in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Parameters:

entities - the list of entities to be saved

getAccessorForPersistence

protected Accessor<T> getAccessorForPersistence()

stream

public Stream<T> stream()

Specified by:

stream in interface Accessor<T extends step.core.accessors.AbstractIdentifiableObject>

Returns:

a Stream with all objects