EmptyInventory (Hawkular Inventory API 0.2.0.Alpha1 API)

java.lang.Object
- org.hawkular.inventory.api.EmptyInventory

All Implemented Interfaces:

AutoCloseable, Inventory
```
public class EmptyInventory
extends Object
implements Inventory
```
This is more or a less a helper class to be used in cases where an implementor or a user would like to swap out the proper implementation with something that always returns empty result sets.

Since:

0.0.2

Author:

Lukas Krejci

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`EmptyInventory.EnvironmentReadWrite`
`static class`	`EmptyInventory.EnvironmentsMultiple`
`static class`	`EmptyInventory.EnvironmentsRead`
`static class`	`EmptyInventory.EnvironmentsReadContained`
`static class`	`EmptyInventory.EnvironmentsSingle`
`static class`	`EmptyInventory.FeedsMultiple`
`static class`	`EmptyInventory.FeedsRead`
`static class`	`EmptyInventory.FeedsReadContained`
`static class`	`EmptyInventory.FeedsReadWrite`
`static class`	`EmptyInventory.FeedsSingle`
`static class`	`EmptyInventory.MetricsMultiple`
`static class`	`EmptyInventory.MetricsRead`
`static class`	`EmptyInventory.MetricsReadAssociate`
`static class`	`EmptyInventory.MetricsReadContained`
`static class`	`EmptyInventory.MetricsReadWrite`
`static class`	`EmptyInventory.MetricsSingle`
`static class`	`EmptyInventory.MetricTypesMultiple`
`static class`	`EmptyInventory.MetricTypesRead`
`static class`	`EmptyInventory.MetricTypesReadAssociate`
`static class`	`EmptyInventory.MetricTypesReadContained`
`static class`	`EmptyInventory.MetricTypesReadWrite`
`static class`	`EmptyInventory.MetricTypesSingle`
`static class`	`EmptyInventory.RelationshipsMultiple`
`static class`	`EmptyInventory.RelationshipsRead`
`static class`	`EmptyInventory.RelationshipsReadWrite`
`static class`	`EmptyInventory.RelationshipsSingle`
`static class`	`EmptyInventory.ResourcesMultiple`
`static class`	`EmptyInventory.ResourcesRead`
`static class`	`EmptyInventory.ResourcesReadAssociate`
`static class`	`EmptyInventory.ResourcesReadContained`
`static class`	`EmptyInventory.ResourcesReadWrite`
`static class`	`EmptyInventory.ResourcesSingle`
`static class`	`EmptyInventory.ResourceTypesMultiple`
`static class`	`EmptyInventory.ResourceTypesRead`
`static class`	`EmptyInventory.ResourceTypesReadContained`
`static class`	`EmptyInventory.ResourceTypesReadWrite`
`static class`	`EmptyInventory.ResourceTypesSingle`
`protected static class`	`EmptyInventory.SingleBase<E extends Entity<?,?>,Update>`
`static class`	`EmptyInventory.TenantsMultiple`
`static class`	`EmptyInventory.TenantsRead`
`static class`	`EmptyInventory.TenantsReadContained`
`static class`	`EmptyInventory.TenantsReadWrite`
`static class`	`EmptyInventory.TenantsSingle`

Constructor Summary

Constructors
Constructor and Description

EmptyInventory()

Constructors
Constructor and Description
`EmptyInventory()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`close()`
`protected static <T> Page<T>`	`emptyPage(Pager pager)`
`protected static EntityNotFoundException`	`entityNotFound(Class<? extends Entity<?,?>> entityClass)`
`boolean`	`hasObservers(Interest<?,?> interest)` This method is mainly useful for testing.
`void`	`initialize(Configuration configuration)` Initializes the inventory from the provided configuration object.
`<C,E> rx.Observable<C>`	`observable(Interest<C,E> interest)` NOTE: The subscribers will receive the notifications even after they failed.
`Relationships.Read`	`relationships()` Global access to all relationships.
`Tenants.ReadWrite`	`tenants()` Entry point into the inventory.

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.Inventory
inspect, inspect, inspect, inspect, inspect, inspect, inspect, inspect, inspect, inspect

- Constructor Detail
  - EmptyInventory
```
public EmptyInventory()
```
- Method Detail
  - initialize
```
public void initialize(Configuration configuration)
```
    Description copied from interface: Inventory
    
    Initializes the inventory from the provided configuration object.
    
    Specified by:
    
    initialize in interface Inventory
    
    Parameters:
    
    configuration - the configuration to use.
  - close
```
public void close()
           throws Exception
```
    Specified by:
    
    close in interface AutoCloseable
    
    Throws:
    
    Exception
  - tenants
```
public Tenants.ReadWrite tenants()
```
    Description copied from interface: Inventory
    
    Entry point into the inventory. Select one (ResolvingToSingle.get(Object)) or more (ResolvingToMultiple.getAll(org.hawkular.inventory.api.filters.Filter...)) tenants and navigate further to the entities of interest.
    
    Specified by:
    
    tenants in interface Inventory
    
    Returns:
    
    full CRUD and navigation interface to tenants
  - relationships
```
public Relationships.Read relationships()
```
    Description copied from interface: Inventory
    
    Global access to all relationships. Use this with caution as it may result in scanning across the potentially very large number of relationships present in the inventory.
    To create relationships, first navigate to one of its endpoint entities and create it from there using the API calls.
    
    Specified by:
    
    relationships in interface Inventory
    
    Returns:
    
    the read access to relationships.
  - hasObservers
```
public boolean hasObservers(Interest<?,?> interest)
```
    Description copied from interface: Inventory
    
    This method is mainly useful for testing.
    
    Specified by:
    
    hasObservers in interface Inventory
    
    Parameters:
    
    interest - the interest in changes of some inventory entity type
    
    Returns:
    
    true if the interest has some observers or not
  - observable
```
public <C,E> rx.Observable<C> observable(Interest<C,E> interest)
```
    Description copied from interface: Inventory
    
    NOTE: The subscribers will receive the notifications even after they failed. I.e. it is the subscribers responsibility to unsubscribe on error
    
    Specified by:
    
    observable in interface Inventory
    
    Type Parameters:
    
    C - the type of object that will be passed to the subscribers of the returned observable
    
    E - the type of the entity the interest is expressed on
    
    Parameters:
    
    interest - the interest in changes of some inventory entity type
    
    Returns:
    
    an observable to which the caller can subscribe to receive notifications about inventory mutation
  - emptyPage
```
protected static <T> Page<T> emptyPage(Pager pager)
```
  - entityNotFound
```
protected static EntityNotFoundException entityNotFound(Class<? extends Entity<?,?>> entityClass)
```

Class EmptyInventory

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

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

Constructor Detail

EmptyInventory

Method Detail

initialize

close

tenants

relationships

hasObservers

observable

emptyPage

entityNotFound