org.hawkular.inventory.api

Class EmptyInventory.MetricsReadWrite

java.lang.Object

org.hawkular.inventory.api.EmptyInventory.MetricsReadWrite

All Implemented Interfaces:

Metrics.ReadWrite

Enclosing class:

EmptyInventory

public static class EmptyInventory.MetricsReadWrite
extends Object
implements Metrics.ReadWrite

Constructor Summary

Constructors

Constructor and Description
MetricsReadWrite()

Method Summary

Modifier and Type	Method and Description
Metrics.Single	create(Metric.Blueprint blueprint) Creates a new entity at the current position in the inventory traversal.
void	delete(String id) Deletes an entity with the provided id from the current position in the inventory traversal.
Metrics.Single	get(String id) Tries to find a single entity in the current position in the inventory traversal.
Metrics.Multiple	getAll(Filter[][] filters) Returns access interface to all entities conforming to the provided filters in the current position in the inventory traversal.
void	update(String id, Metric.Update update) Persists the provided entity on the current position in the inventory traversal.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hawkular.inventory.api.ResolvingToMultiple

getAll

Constructor Detail

MetricsReadWrite

public MetricsReadWrite()

Method Detail

getAll

public Metrics.Multiple getAll(Filter[][] filters)

Description copied from interface: ResolvingToMultiple

Returns access interface to all entities conforming to the provided filters in the current position in the inventory traversal.

The filters parameter is actually composed of individual sets of filters each of which is applied to the "source" entities. Each set can have multiple filters that are then applied one after another on their intermediate results. This becomes useful when you want to filter by sources having some kind of relationships with other entities and in addition filter on the sources themselves, too. E.g.:

 inventory.tenants().getAll(new Filter[][]{{Related.by("myRel"), With.type(ResourceType.class)},
 {With.id("asf")}}).entities();
 

The filter above would first check that the tenants in question have a relationship called "myRel" with some resource types and then would also check if the tenant has ID "asf".

Parameters:

filters - the sets of filters to apply

Returns:

the access to found entities

get

public Metrics.Single get(String id)
                   throws EntityNotFoundException

Description copied from interface: ResolvingToSingle

Tries to find a single entity in the current position in the inventory traversal.

Parameters:

id - the identification of sorts of the entity to find in the current traversal position

Returns:

access interface to the entity

Throws:

EntityNotFoundException

create

public Metrics.Single create(Metric.Blueprint blueprint)
                      throws EntityAlreadyExistsException

Description copied from interface: WriteInterface

Creates a new entity at the current position in the inventory traversal.

Parameters:

blueprint - the blueprint to be used to create the new entity

Returns:

access interface to the freshly created entity

Throws:

EntityAlreadyExistsException - if the entity already exists

update

public void update(String id,
                   Metric.Update update)
            throws EntityNotFoundException

Description copied from interface: WriteInterface

Persists the provided entity on the current position in the inventory traversal.

Parameters:

id - the id of the entity to update

update - the updates to the entity

Throws:

EntityNotFoundException - if the entity is not found in the database

delete

public void delete(String id)
            throws EntityNotFoundException

Description copied from interface: WriteInterface

Deletes an entity with the provided id from the current position in the inventory traversal.

Parameters:

id - the id of the entity to delete

Throws:

EntityNotFoundException - if an entity with given ID doesn't exist on the current postion in the inventory traversal