Package cz.cvut.kbss.jopa.proxy.lazy

Interface LazyLoadingProxy<T>

Type Parameters:
T - Type of the loaded value
All Known Subinterfaces:
LazyLoadingEntityProxy<T>
All Known Implementing Classes:
LazyLoadingListProxy, LazyLoadingMapProxy, LazyLoadingSetProxy
public interface LazyLoadingProxy<T>
Marker interface for lazy loading proxy implementations.

  • Method Summary

    Modifier and Type
    Method
    Description
    T
    getLoadedValue()
    If this proxy has already been loaded, this method returns the loaded value.
    boolean
    isLoaded()
    Checks whether this proxy has already been loaded.
    T
    triggerLazyLoading()
    Triggers value loading.
    default T
    unwrap()
    Gets a value that should be used to replace this proxy outside a persistence context.

  • Method Details

    • triggerLazyLoading

      T triggerLazyLoading()
      Triggers value loading.
      Returns:
      Loaded value

    • isLoaded

      boolean isLoaded()
      Checks whether this proxy has already been loaded.
      Returns:
      true if this proxy has been loaded, false otherwise

    • getLoadedValue

      T getLoadedValue()
      If this proxy has already been loaded, this method returns the loaded value.
      Returns:
      The loaded value, null if this proxy has not been loaded, yet
      Throws:
      IllegalStateException - If called before this proxy is loaded
      See Also:

    • unwrap

      default T unwrap()
      Gets a value that should be used to replace this proxy outside a persistence context.
      Returns:
      Default value to replace this proxy with