Package it.tidalwave.role

Interface Aggregate<T>

  • All Known Implementing Classes:
    PresentationModelAggregate
    Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
    @FunctionalInterface
public interface Aggregate<T>
    The role of an aggregate object, that is an object which contains other named objects.
    Author:
    Fabrizio Giudici
    Stereotype:
    Role

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.Class<Aggregate> _Aggregate_  

    • Method Summary

      All Methods Static Methods Instance Methods Abstract Methods Default Methods 
      Modifier and Type Method Description
      java.util.Optional<T> getByName​(java.lang.String name)
      Returns an object given its name.
      default java.util.Collection<java.lang.String> getNames()
      Returns the names of contained objects.
      static <T> Aggregate<T> newInstance()
      Returns a new empty instance that will be populated by means of with(String, Object).
      static <T> Aggregate<T> of​(java.lang.String name, T value)
      Returns a new instance with the specified (name, value) pair.
      static <T> Aggregate<T> of​(java.util.Map<java.lang.String,​T> mapByName)
      Returns a new instance with the specified (name, value) pairs.
      default Aggregate<T> with​(java.lang.String name, T value)
      Returns a new instance with the specified (name, value) pair.

    • Field Detail

      • _Aggregate_

        static final java.lang.Class<Aggregate> _Aggregate_

    • Method Detail

      • getByName

        @Nonnull
java.util.Optional<T> getByName​(@Nonnull
                                java.lang.String name)
        Returns an object given its name.
        Parameters:
        name - the name
        Returns:
        the object

      • getNames

        @Nonnull
default java.util.Collection<java.lang.String> getNames()
        Returns the names of contained objects.
        Returns:
        the names of the objects
        Since:
        3.1-ALPHA-8

      • of

        @Nonnull
static <T> Aggregate<T> of​(@Nonnull
                           java.util.Map<java.lang.String,​T> mapByName)
        Returns a new instance with the specified (name, value) pairs.
        Type Parameters:
        T - the static type of the value
        Parameters:
        mapByName - the map containing the pairs
        Returns:
        the new instance
        Since:
        3.2-ALPHA-1

      • newInstance

        @Nonnull
static <T> Aggregate<T> newInstance()
        Returns a new empty instance that will be populated by means of with(String, Object).
        Type Parameters:
        T - the static type of the aggregate
        Returns:
        the new instance
        Since:
        3.2-ALPHA-2

      • of

        @Nonnull
static <T> Aggregate<T> of​(@Nonnull
                           java.lang.String name,
                           @Nonnull
                           T value)
        Returns a new instance with the specified (name, value) pair.
        Type Parameters:
        T - the static type of the aggregate
        Parameters:
        name - the name in the pair
        value - the value in the pair
        Returns:
        the new instance
        Since:
        3.2-ALPHA-1

      • with

        @Nonnull
default Aggregate<T> with​(@Nonnull
                          java.lang.String name,
                          @Nonnull
                          T value)
        Returns a new instance with the specified (name, value) pair.
        Parameters:
        name - the name in the pair
        value - the value in the pair
        Returns:
        the new instance
        Since:
        3.2-ALPHA-1