Class ConstantActiveDescriptor<T>

Type Parameters:
T - The type of the constant
All Implemented Interfaces:
Externalizable, Serializable, ActiveDescriptor<T>, Descriptor, SingleCache<T>

public class ConstantActiveDescriptor<T> extends AbstractActiveDescriptor<T>
See Also:
  • Field Details

    • serialVersionUID

      private static final long serialVersionUID
      For serialization
      See Also:
    • theOne

      private final T theOne
  • Constructor Details

    • ConstantActiveDescriptor

      public ConstantActiveDescriptor()
      For serializable
    • ConstantActiveDescriptor

      public ConstantActiveDescriptor(T theOne, Set<Type> advertisedContracts, Class<? extends Annotation> scope, String name, Set<Annotation> qualifiers, DescriptorVisibility descriptorVisibility, Boolean proxy, Boolean proxyForSameScope, String classAnalysisName, Map<String,List<String>> metadata, int rank)
      Creates the constant descriptor
      Parameters:
      theOne - May not be null
      advertisedContracts -
      scope -
      name -
      qualifiers -
      descriptorVisibility -
      proxy -
      proxyForSameScope -
      classAnalysisName -
      metadata -
      rank -
  • Method Details

    • getImplementation

      public String getImplementation()
      Description copied from interface: Descriptor
      Returns the fully qualified class name of the implementation class. If this is a factory descriptor then this will return the fully qualified name of the class implementing the factory interface.
      Specified by:
      getImplementation in interface Descriptor
      Overrides:
      getImplementation in class DescriptorImpl
      Returns:
      Might return null in some cases, but will usually return the fully qualified class name of the implementation class or of the factory class for this descriptor
    • getCache

      public T getCache()
      Description copied from interface: SingleCache
      This can be used for scopes that will only every be created once. The returned value must have been set previously with setCache. If this is called when isCacheSet is false will result in a RuntimeException
      Specified by:
      getCache in interface SingleCache<T>
      Overrides:
      getCache in class AbstractActiveDescriptor<T>
      Returns:
      A value cached with this ActiveDescriptor
    • isCacheSet

      public boolean isCacheSet()
      Description copied from interface: SingleCache
      Returns true if this cache has been set
      Specified by:
      isCacheSet in interface SingleCache<T>
      Overrides:
      isCacheSet in class AbstractActiveDescriptor<T>
      Returns:
      true if there is a currently cached value, false otherwise
    • getImplementationClass

      public Class<?> getImplementationClass()
      Description copied from interface: ActiveDescriptor
      The implementation class that should be used to generate new instances of this descriptor.

      If the class returned is a Factory, then the factory is used to create instances. In this case the system will get an instance of the factory and use it to create the instances

      Returns:
      The class that directly implements the contract types, or the class that is the factory for an object that implements the contract types
    • getImplementationType

      public Type getImplementationType()
      Description copied from interface: ActiveDescriptor
      If known the Type of the implementation. If unknown will return the same as ActiveDescriptor.getImplementationClass()
      Returns:
      The type of the implementation or the implementation class
    • create

      public T create(ServiceHandle<?> root)
      Description copied from interface: ActiveDescriptor
      Creates an instance of the ActiveDescriptor. All of the Injectee's must be created prior to instantiation, and associated with the ExtendedProvider so that they can be destroyed properly
      Parameters:
      root - The root service handle, which can be used to associated all the PerLookup objects with this creation
      Returns:
      An instance of this ActiveDescriptor