Class DefaultClassHolder<T>

java.lang.Object
org.apache.commons.discovery.tools.DefaultClassHolder<T>
public class DefaultClassHolder<T> extends Object
Holder for a default class. Class may be specified by name (String) or class (Class). Using the holder complicates the users job, but minimized # of API's.

  • Constructor Details

    • DefaultClassHolder

      public <S extends T> DefaultClassHolder(Class<S> defaultClass)
      Creates a new holder implementation given the input SPI implementation/extension class.
      Type Parameters:
      S - Any type extends the SPI type
      Parameters:
      defaultClass - The hold class

    • DefaultClassHolder

      public DefaultClassHolder(String defaultName)
      Creates a new holder implementation given the input SPI implementation/extension class name.
      Parameters:
      defaultName - The hold class name

  • Method Details

    • getDefaultClass

      public <S extends T> Class<S> getDefaultClass(SPInterface<T> spi, ClassLoaders loaders)
      Returns the default class, loading it if necessary and verifying that it implements the SPI (this forces the check, no way out..).
      Type Parameters:
      S - Any type extends the SPI type
      Parameters:
      spi - non-null SPI
      loaders - Used only if class needs to be loaded.
      Returns:
      The default Class.

    • getDefaultName

      public String getDefaultName()
      Returns the hold class name.
      Returns:
      The hold class name