Class DelegatedInjectionValueParamProvider

java.lang.Object

org.glassfish.jersey.server.internal.inject.DelegatedInjectionValueParamProvider

All Implemented Interfaces:

ValueParamProvider

@Singleton
class DelegatedInjectionValueParamProvider
extends Object
implements ValueParamProvider

Value factory provider that delegates the injection target lookup to the underlying injection provider.

Nested Class Summary

Nested classes/interfaces inherited from interface ValueParamProvider

ValueParamProvider.Priority, ValueParamProvider.PriorityType

Field Summary

Fields

Modifier and Type	Field	Description
private final Cache<Parameter, ForeignDescriptor>	descriptorCache	We do not want to create a new descriptor instance for every and each method invocation.
private final Function<Binding, ForeignDescriptor>	foreignDescriptorFactory
private final LazyValue<ContextInjectionResolver>	resolver

Constructor Summary

Constructors

Constructor	Description
DelegatedInjectionValueParamProvider(LazyValue<ContextInjectionResolver> resolver, Function<Binding, ForeignDescriptor> foreignDescriptorFactory)	Injection constructor.

Method Summary

Modifier and Type	Method	Description
private ForeignDescriptor	createDescriptor(Class<?> clazz)	Method is able to create form incoming class and jersey descriptor a ForeignDescriptor which is provided by underlying DI provider.
private Injectee	getInjectee(Parameter parameter)	Creates a new object Injectee corresponding to the injecting point.
ValueParamProvider.PriorityType	getPriority()	Gets the priority of this provider.
Function<ContainerRequest, ?>	getValueProvider(Parameter parameter)	Get an injected value provider for the parameter.

Methods inherited from class Object

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

Field Details

resolver

private final LazyValue<ContextInjectionResolver> resolver

foreignDescriptorFactory

private final Function<Binding, ForeignDescriptor> foreignDescriptorFactory

descriptorCache

private final Cache<Parameter, ForeignDescriptor> descriptorCache

We do not want to create a new descriptor instance for every and each method invocation. If the underlying DI descriptor ForeignDescriptor is already created for the given Parameter then used the already created descriptor.

Constructor Details

DelegatedInjectionValueParamProvider

public DelegatedInjectionValueParamProvider(LazyValue<ContextInjectionResolver> resolver,
 Function<Binding, ForeignDescriptor> foreignDescriptorFactory)

Injection constructor.

Parameters:

resolver - context injection resolver.

foreignDescriptorFactory - function that is able to create a new foreign descriptor.

Method Details

getValueProvider

public Function<ContainerRequest, ?> getValueProvider(Parameter parameter)

Description copied from interface: ValueParamProvider

Get an injected value provider for the parameter. May return null in case the parameter is not supported by the value provider.

Specified by:

getValueProvider in interface ValueParamProvider

Parameters:

parameter - parameter requesting the value provider instance.

Returns:

injected parameter value provider. Returns null if parameter is not supported.

getPriority

public ValueParamProvider.PriorityType getPriority()

Description copied from interface: ValueParamProvider

Gets the priority of this provider.

Specified by:

getPriority in interface ValueParamProvider

Returns:

the priority of this provider.

See Also:

• ValueParamProvider.PriorityType
• ValueParamProvider.Priority

getInjectee

private Injectee getInjectee(Parameter parameter)

Creates a new object Injectee corresponding to the injecting point. The injectee contains basic information about the injection point types and ForeignDescriptor of the underlying DI provider to make delegated injection resolver as simple as possible.

Parameters:

parameter - jersey-like parameter corresponding to one resource-method's parameter.

Returns:

injectee instance as a source of the information about the injecting point.

createDescriptor

private ForeignDescriptor createDescriptor(Class<?> clazz)

Method is able to create form incoming class and jersey descriptor a ForeignDescriptor which is provided by underlying DI provider.

Parameters:

clazz - class from which jersey-like descriptor is created.

Returns:

foreign descriptor of the underlying DI provider.