Package org.atmosphere.config.managed

Class TypeResolver

java.lang.Object
org.atmosphere.config.managed.TypeResolver
public final class TypeResolver extends Object
Enhanced type resolution utilities. Based on org.springframework.core.GenericTypeResolver.
Author:
Jonathan Halterman

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static final class 
    TypeResolver.Unknown
    An unknown type.

  • Method Summary

    Modifier and Type
    Method
    Description
    static void
    disableCache()
    Disables the internal caching of TypeVariables.
    static void
    enableCache()
    Enables the internal caching of TypeVariables.
    static <T, I extends T>
    Class<?>
    resolveArgument(Class<I> initialType, Class<T> targetType)
    Returns the raw class representing the type argument for the targetType resolved upwards from the initialType.
    static Class<?>
    resolveArgument(Type genericType, Class<?> targetType)
    Resolves the type argument for the genericType using type variable information from the sourceType.
    static <T, I extends T>
    Class<?>[]
    resolveArguments(Class<I> initialType, Class<T> targetType)
    Returns an array of raw classes representing type arguments for the targetType resolved upwards from the initialType.
    static Class<?>[]
    resolveArguments(Type genericType, Class<?> targetType)
    Resolves the arguments for the genericType using the type variable information for the targetType.
    static Type
    resolveBound(TypeVariable<?> typeVariable)
    Resolves the first bound for the typeVariable, returning Unknown.class if none can be resolved.
    static Class<?>
    resolveClass(Type genericType, Class<?> targetType)
    Resolves the raw class for the given genericType, using the type variable information from the targetType.
    static Type
    resolveGenericType(Type initialType, Class<?> targetType)
    Resolves the generic Type for the targetType by walking the type hierarchy upwards from the initialType.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • enableCache

      public static void enableCache()
      Enables the internal caching of TypeVariables.

    • disableCache

      public static void disableCache()
      Disables the internal caching of TypeVariables.

    • resolveArgument

      public static <T, I extends T> Class<?> resolveArgument(Class<I> initialType, Class<T> targetType)
      Returns the raw class representing the type argument for the targetType resolved upwards from the initialType. If no arguments can be resolved then Unknown.class is returned.
      Parameters:
      initialType - to resolve upwards from
      targetType - to resolve arguments for
      Returns:
      type argument for initialType else null if no type arguments are declared
      Throws:
      IllegalArgumentException - if more or less than one type argument is resolved for the give types

    • resolveArgument

      public static Class<?> resolveArgument(Type genericType, Class<?> targetType)
      Resolves the type argument for the genericType using type variable information from the sourceType. If genericType is an instance of class, then genericType is returned. If no arguments can be resolved then Unknown.class is returned.
      Parameters:
      genericType - to resolve upwards from
      targetType - to resolve arguments for
      Returns:
      type argument for initialType else null if no type arguments are declared
      Throws:
      IllegalArgumentException - if more or less than one type argument is resolved for the give types

    • resolveArguments

      public static <T, I extends T> Class<?>[] resolveArguments(Class<I> initialType, Class<T> targetType)
      Returns an array of raw classes representing type arguments for the targetType resolved upwards from the initialType. Arguments for targetType that cannot be resolved to a Class are returned as Unknown.class. If no arguments can be resolved then null is returned.
      Parameters:
      initialType - to resolve upwards from
      targetType - to resolve arguments for
      Returns:
      array of raw classes representing type arguments for initialType else null if no type arguments are declared

    • resolveArguments

      public static Class<?>[] resolveArguments(Type genericType, Class<?> targetType)
      Resolves the arguments for the genericType using the type variable information for the targetType. Returns null if genericType is not parameterized or if arguments cannot be resolved.

    • resolveGenericType

      public static Type resolveGenericType(Type initialType, Class<?> targetType)
      Resolves the generic Type for the targetType by walking the type hierarchy upwards from the initialType.

    • resolveClass

      public static Class<?> resolveClass(Type genericType, Class<?> targetType)
      Resolves the raw class for the given genericType, using the type variable information from the targetType.

    • resolveBound

      public static Type resolveBound(TypeVariable<?> typeVariable)
      Resolves the first bound for the typeVariable, returning Unknown.class if none can be resolved.