Package io.streamthoughts.azkarra.runtime.components

Class DefaultComponentRegistry

java.lang.Object

io.streamthoughts.azkarra.runtime.components.DefaultComponentRegistry

All Implemented Interfaces:

ComponentRegistry, Closeable, AutoCloseable

public class DefaultComponentRegistry
extends Object
implements ComponentRegistry

The default ComponentRegistry implementation.

Field Summary

Fields

Modifier and Type	Field	Description
protected static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor	Description
DefaultComponentRegistry()	Creates a new DefaultComponentRegistry instance.

Method Summary

Modifier and Type	Method	Description
void	close()
<T> Collection<ComponentDescriptor<T>>	findAllDescriptorByAlias(String alias)	Finds a ComponentDescriptor for the specified class or alias.
<T> Collection<ComponentDescriptor<T>>	findAllDescriptorsByType(Class<T> type)	Finds all registered providers for the specified type.
<T> Optional<ComponentDescriptor<T>>	findDescriptorByAlias(String alias)	Finds a ComponentDescriptor for the specified class or alias.
<T> Optional<ComponentDescriptor<T>>	findLatestDescriptorByAlias(String alias)	Finds a ComponentDescriptor for the specified class or alias.
<T> Collection<T>	getAllComponents(Class<T> type, Conf conf)	Gets all instances, which may be shared or independent, for the specified type.
<T> Collection<T>	getAllComponents(String alias, Conf conf)	Gets all instances, which may be shared or independent, for the specified type.
<T> T	getComponent(Class<T> type, Conf conf)	Gets an instance, which may be shared or independent, for the specified type.
<T> T	getComponent(String alias, Conf conf)	Gets an instance, which may be shared or independent, for the specified type.
<T> T	getLatestComponent(Class<T> type, Conf conf)	Gets an instance, which may be shared or independent, for the specified type.
<T> T	getLatestComponent(String classOrAlias, Conf conf)	Gets an instance, which may be shared or independent, for the specified type.
<T> T	getVersionedComponent(String alias, String version, Conf conf)	Gets an instance, which may be shared or independent, for the specified type.
boolean	isRegistered(String classOrAlias)	Checks whether the specified components class or alias is already registered.
<T> void	registerComponent(ComponentDescriptor<T> descriptor)	Registers the specified ComponentDescriptor to this ComponentRegistry.
<T> void	registerComponent(ComponentDescriptor<T> descriptor, ComponentFactory<T> factory)	Registers the specified ComponentDescriptor to this ComponentRegistry.
DefaultComponentRegistry	setComponentAliasesGenerator(ComponentAliasesGenerator aliasesGenerator)	Sets the ComponentAliasesGenerator instance.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final org.slf4j.Logger LOG

Constructor Detail

DefaultComponentRegistry

public DefaultComponentRegistry()

Creates a new DefaultComponentRegistry instance.

Method Detail

isRegistered

public boolean isRegistered(String classOrAlias)

Checks whether the specified components class or alias is already registered.

Specified by:

isRegistered in interface ComponentRegistry

Parameters:

classOrAlias - the fully qualified class name or an alias of the component.

Returns:

true if a provider exist, {code false} otherwise.

findDescriptorByAlias

public <T> Optional<ComponentDescriptor<T>> findDescriptorByAlias(String alias)

Finds a ComponentDescriptor for the specified class or alias.

Specified by:

findDescriptorByAlias in interface ComponentRegistry

Type Parameters:

T - the component type.

Parameters:

alias - the fully qualified class name or an alias of the component.

Returns:

the optional ComponentDescriptor instance.

findLatestDescriptorByAlias

public <T> Optional<ComponentDescriptor<T>> findLatestDescriptorByAlias(String alias)

Finds a ComponentDescriptor for the specified class or alias. If more than one component is registered for the given alias, the latest version is returned.

Specified by:

findLatestDescriptorByAlias in interface ComponentRegistry

Type Parameters:

T - the component type.

Parameters:

alias - the fully qualified class name or an alias of the component.

Returns:

the optional ComponentDescriptor instance.

findAllDescriptorByAlias

public <T> Collection<ComponentDescriptor<T>> findAllDescriptorByAlias(String alias)

Finds a ComponentDescriptor for the specified class or alias.

Specified by:

findAllDescriptorByAlias in interface ComponentRegistry

Type Parameters:

T - the component type.

Parameters:

alias - the fully qualified class name or an alias of the component.

Returns:

the optional ComponentDescriptor instance.

findAllDescriptorsByType

public <T> Collection<ComponentDescriptor<T>> findAllDescriptorsByType(Class<T> type)

Finds all registered providers for the specified type.

Specified by:

findAllDescriptorsByType in interface ComponentRegistry

Type Parameters:

T - the component type.

Parameters:

type - the component class.

Returns:

the collection of ComponentDescriptor.

getComponent

public <T> T getComponent(Class<T> type,
                          Conf conf)

Gets an instance, which may be shared or independent, for the specified type.

Specified by:

getComponent in interface ComponentRegistry

Type Parameters:

T - the component-type.

Parameters:

type - the component class.

conf - the configuration used if the component implement Configurable.

Returns:

the instance of type ComponentRegistry.

getLatestComponent

public <T> T getLatestComponent(Class<T> type,
                                Conf conf)

Gets an instance, which may be shared or independent, for the specified type. If more than one component is registered for the given type, the latest version is returned.

Specified by:

getLatestComponent in interface ComponentRegistry

Type Parameters:

T - the component-type.

Parameters:

type - the component class.

conf - the configuration used if the component implement Configurable.

Returns:

the instance of type ComponentRegistry.

getLatestComponent

public <T> T getLatestComponent(String classOrAlias,
                                Conf conf)

Gets an instance, which may be shared or independent, for the specified type. If more than one component is registered for the given type, the latest version is returned.

Specified by:

getLatestComponent in interface ComponentRegistry

Type Parameters:

T - the component-type.

Parameters:

classOrAlias - the fully qualified class name or an alias of the component.

conf - the configuration used if the component implement Configurable.

Returns:

the instance of type ComponentRegistry.

getVersionedComponent

public <T> T getVersionedComponent(String alias,
                                   String version,
                                   Conf conf)

Gets an instance, which may be shared or independent, for the specified type. If more than one component is registered for the given type, the latest version is returned.

Specified by:

getVersionedComponent in interface ComponentRegistry

Type Parameters:

T - the component-type.

Parameters:

alias - the fully qualified class name or an alias of the component.

conf - the configuration used if the component implement Configurable.

Returns:

the instance of type ComponentRegistry.

getAllComponents

public <T> Collection<T> getAllComponents(Class<T> type,
                                          Conf conf)

Gets all instances, which may be shared or independent, for the specified type.

Specified by:

getAllComponents in interface ComponentRegistry

Type Parameters:

T - the component-type.

Parameters:

type - the component class.

conf - the configuration used if the component implement Configurable.

Returns:

the instance of type ComponentRegistry.

getComponent

public <T> T getComponent(String alias,
                          Conf conf)

Gets an instance, which may be shared or independent, for the specified type.

Specified by:

getComponent in interface ComponentRegistry

Type Parameters:

T - the component-type.

Parameters:

alias - the fully qualified class name or an alias of the component.

conf - the configuration used if the component implement Configurable.

Returns:

the instance of type ComponentRegistry.

getAllComponents

public <T> Collection<T> getAllComponents(String alias,
                                          Conf conf)

Gets all instances, which may be shared or independent, for the specified type.

Specified by:

getAllComponents in interface ComponentRegistry

Type Parameters:

T - the component-type.

Parameters:

alias - the fully qualified class name or an alias of the component.

conf - the configuration used if the component implement Configurable.

Returns:

the instance of type ComponentRegistry.

registerComponent

public <T> void registerComponent(ComponentDescriptor<T> descriptor)

Registers the specified ComponentDescriptor to this ComponentRegistry.

Specified by:

registerComponent in interface ComponentRegistry

Type Parameters:

T - the component type.

Parameters:

descriptor - the ComponentDescriptor instance to be registered.

registerComponent

public <T> void registerComponent(ComponentDescriptor<T> descriptor,
                                  ComponentFactory<T> factory)

Registers the specified ComponentDescriptor to this ComponentRegistry.

Specified by:

registerComponent in interface ComponentRegistry

Type Parameters:

T - the component type.

Parameters:

descriptor - the ComponentDescriptor instance to be registered.

factory - the ComponentFactory instance.

setComponentAliasesGenerator

public DefaultComponentRegistry setComponentAliasesGenerator(ComponentAliasesGenerator aliasesGenerator)

Sets the ComponentAliasesGenerator instance.

Specified by:

setComponentAliasesGenerator in interface ComponentRegistry

Parameters:

aliasesGenerator - the ComponentAliasesGenerator used for generating provider aliases.

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable