Package org.jboss.weld

Class AbstractCDI<T>

  • Type Parameters:
    T -
    All Implemented Interfaces:
    Iterable<T>, Instance<T>, Provider<T>, WeldInstance<T>
    Direct Known Subclasses:
    SimpleCDI
    public abstract class AbstractCDI<T>
extends CDI<T>
implements WeldInstance<T>
    Abstract implementation of CDI which forwards all Instance methods to a delegate. Furthermore, it allows the calling class to be identified using the getCallingClassName() method.
    Author:
    Jozef Hartinger

    • Field Detail

      • knownClassNames

        protected final Set<String> knownClassNames

    • Constructor Detail

      • AbstractCDI

        public AbstractCDI()

    • Method Detail

      • get

        public T get()
        Description copied from interface: Provider
        Provides a fully-constructed and injected instance of T.
        Specified by:
        get in interface Provider<T>
        Returns:
        instance of T.

      • select

        public WeldInstance<T> select​(Annotation... qualifiers)
        Description copied from interface: Instance

        Obtains a child Instance for the given additional required qualifiers.

        Specified by:
        select in interface Instance<T>
        Specified by:
        select in interface WeldInstance<T>
        Parameters:
        qualifiers - the additional required qualifiers
        Returns:
        the child Instance

      • select

        public <U extends T> WeldInstance<U> select​(Class<U> subtype,
                                            Annotation... qualifiers)
        Description copied from interface: Instance

        Obtains a child Instance for the given required type and additional required qualifiers.

        Specified by:
        select in interface Instance<T>
        Specified by:
        select in interface WeldInstance<T>
        Type Parameters:
        U - the required type
        Parameters:
        subtype - a Class representing the required type
        qualifiers - the additional required qualifiers
        Returns:
        the child Instance

      • select

        public <U extends T> WeldInstance<U> select​(TypeLiteral<U> subtype,
                                            Annotation... qualifiers)
        Description copied from interface: Instance

        Obtains a child Instance for the given required type and additional required qualifiers.

        Specified by:
        select in interface Instance<T>
        Specified by:
        select in interface WeldInstance<T>
        Type Parameters:
        U - the required type
        Parameters:
        subtype - a TypeLiteral representing the required type
        qualifiers - the additional required qualifiers
        Returns:
        the child Instance

      • select

        public <X> WeldInstance<X> select​(Type subtype,
                                  Annotation... qualifiers)
        Description copied from interface: WeldInstance

        Obtains a child Instance for the given required type and additional required qualifiers. Must be invoked on Instance<T> where T is Object.

        Specified by:
        select in interface WeldInstance<T>
        Type Parameters:
        X - the required type
        Parameters:
        subtype - a Type representing the required type
        qualifiers - the additional required qualifiers
        Returns:
        the child Instance

      • isUnsatisfied

        public boolean isUnsatisfied()
        Description copied from interface: Instance

        Determines if there is no bean that matches the required type and qualifiers and is eligible for injection into the class into which the parent Instance was injected.

        Specified by:
        isUnsatisfied in interface Instance<T>
        Returns:
        true if there is no bean that matches the required type and qualifiers and is eligible for injection into the class into which the parent Instance was injected, or false otherwise.

      • isAmbiguous

        public boolean isAmbiguous()
        Description copied from interface: Instance

        Determines if there is more than one bean that matches the required type and qualifiers and is eligible for injection into the class into which the parent Instance was injected.

        Specified by:
        isAmbiguous in interface Instance<T>
        Returns:
        true if there is more than one bean that matches the required type and qualifiers and is eligible for injection into the class into which the parent Instance was injected, or false otherwise.

      • destroy

        public void destroy​(T instance)
        Description copied from interface: Instance

        When called, the container destroys the instance if the active context object for the scope type of the bean supports destroying bean instances. All normal scoped built-in contexts support destroying bean instances.

        The instance passed should either be a dependent scoped bean instance obtained from the same Instance object, or the client proxy for a normal scoped bean instance.

        Specified by:
        destroy in interface Instance<T>
        Parameters:
        instance - the instance to destroy

      • getHandler

        public WeldInstance.Handler<T> getHandler()
        Description copied from interface: WeldInstance
        Obtains an initialized contextual reference handler for the bean that has the required type and required qualifiers and is eligible for injection.

        The contextual reference is obtained lazily, i.e. when first needed.

        Specified by:
        getHandler in interface WeldInstance<T>
        Returns:
        a new handler

      • isResolvable

        public boolean isResolvable()
        Description copied from interface: Instance

        Determines if there is exactly one bean that matches the required type and qualifiers and is eligible for injection into the class into which the parent Instance was injected.

        Specified by:
        isResolvable in interface Instance<T>
        Returns:
        true if there is exactly one bean that matches the required type and qualifiers and is eligible for injection into the class into which the parent Instance was injected, or false otherwise.

      • handlers

        public Iterable<WeldInstance.Handler<T>> handlers()
        Description copied from interface: WeldInstance
        Allows to iterate over contextual reference handlers for all the beans that have the required type and required qualifiers and are eligible for injection.

        Note that the returned Iterable is stateless and so each Iterable.iterator() produces a new set of handlers.

        Specified by:
        handlers in interface WeldInstance<T>
        Returns:
        a new iterable

      • getPriorityComparator

        public Comparator<WeldInstance.Handler<?>> getPriorityComparator()
        Description copied from interface: WeldInstance
        The returned comparator sorts handlers by priority in descending order.
        • A class-based bean whose annotated type has javax.annotation.Priority has the priority of value javax.annotation.Priority#value()
        • A custom bean which implements Prioritized has the priority of value Prioritized.getPriority()
        • Any other bean has the priority of value 0
        Specified by:
        getPriorityComparator in interface WeldInstance<T>
        Returns:
        a comparator instance

      • getCallingClassName

        protected String getCallingClassName()
        Examines StackTraceElements to figure out which class invoked a method on CDI.

      • getInstance

        protected WeldInstance<T> getInstance()
        Subclasses are allowed to override the default behavior, i.e. to cache an instance per BeanManager.
        Returns:
        the Instance the relevant calls are delegated to

      • checkState

        protected void checkState()
        Check whether the container is in a "valid" state, no-op by default.

        Subclasses are allowed to override the default behavior, i.e. to check whether a container is running.