Package io.github.pellse.assembler

Interface Assembler<T,​RC>

  • Type Parameters:
    T - Type for Top Level Entity e.g. Customer
    RC - Output Type e.g. Stream<Transaction> or Flux<Transaction>
    All Known Implementing Classes:
    AssemblerBuilder.AssemblerImpl
    public interface Assembler<T,​RC>

    • Method Summary

      All Methods Static Methods Instance Methods Abstract Methods Default Methods 
      Modifier and Type Method Description
      <C extends java.util.Collection<T>>
      RC      		 assemble​(C topLevelEntities)  
      static <T,​ID,​C extends java.util.Collection<T>,​R,​RC>
      RC      		 assemble​(C topLevelEntities, java.util.function.Function<T,​ID> idExtractor, java.util.List<io.github.pellse.util.query.Mapper<ID,​?,​?>> subQueryMappers, java.util.function.BiFunction<T,​java.lang.Object[],​R> aggregationFunction, AssemblerAdapter<ID,​R,​RC> assemblerAdapter, java.util.function.Function<java.lang.Throwable,​java.lang.RuntimeException> errorConverter)  
      default <C extends java.util.Collection<T>>
      RC      		 assembleFromSupplier​(io.github.pellse.util.function.checked.CheckedSupplier<C,​java.lang.Throwable> topLevelEntitiesProvider)  

    • Method Detail

      • assembleFromSupplier

        default <C extends java.util.Collection<T>> RC assembleFromSupplier​(io.github.pellse.util.function.checked.CheckedSupplier<C,​java.lang.Throwable> topLevelEntitiesProvider)

      • assemble

        <C extends java.util.Collection<T>> RC assemble​(C topLevelEntities)

      • assemble

        static <T,​ID,​C extends java.util.Collection<T>,​R,​RC> RC assemble​(C topLevelEntities,
                                                                                         java.util.function.Function<T,​ID> idExtractor,
                                                                                         java.util.List<io.github.pellse.util.query.Mapper<ID,​?,​?>> subQueryMappers,
                                                                                         java.util.function.BiFunction<T,​java.lang.Object[],​R> aggregationFunction,
                                                                                         AssemblerAdapter<ID,​R,​RC> assemblerAdapter,
                                                                                         java.util.function.Function<java.lang.Throwable,​java.lang.RuntimeException> errorConverter)
        Type Parameters:
        T - e.g. <Customer>
        ID - e.g. <Long>
        C - e.g. List<Customer>
        R - e.g. <Transaction>
        RC - e.g. Stream<Transaction> or Flux<Transaction>
        Parameters:
        topLevelEntities - e.g. List<Customer>
        idExtractor - e.g. Customer::getCustomerId
        subQueryMappers - e.g. [ Mapper<Long, BillingInfo>, Mapper<Long, List<OrderItem>> ]
        aggregationFunction - e.g. buildTransaction(customer, [ billingInfo, orderItemList ])
        assemblerAdapter - Pluggable execution engine for invoking top and sub queries (e.g. Project Reactor, RxJava)
        errorConverter - Converts any exception thrown into a user defined RuntimeException
        Returns:
        A list of aggregated objects e.g. Stream<Transaction> or Flux<Transaction> as specified by the assemblerAdapter return type