Package io.smallrye.reactive.messaging.providers.helpers

Class TypeUtils

java.lang.Object
io.smallrye.reactive.messaging.providers.helpers.TypeUtils
public class TypeUtils extends Object
Utility methods focusing on type inspection, particularly with regard to generics. Code extracted from Apache Commons Lang 3 - TypeUtils.java and ArrayUtils.java

  • Method Details

    • isAssignable

      public static boolean isAssignable(Type type, Type toType)

      Checks if the subject type may be implicitly cast to the target type following the Java generics rules.

      Parameters:
      type - the subject type to be assigned to the target type
      toType - the target type
      Returns:
      true if type is assignable to toType.

    • normalizeUpperBounds

      public static Type[] normalizeUpperBounds(Type[] bounds)

      This method strips out the redundant upper bound types in type variable types and wildcard types (or it would with wildcard types if multiple upper bounds were allowed).

      Example, with the variable type declaration: 

       <K extends java.util.Collection<String> &
 java.util.List<String>>

      since List is a subinterface of Collection, this method will return the bounds as if the declaration had been: 

       <K extends java.util.List<String>>
      Parameters:
      bounds - an array of types representing the upper bounds of either WildcardType or TypeVariable, not null.
      Returns:
      an array containing the values from bounds minus the redundant types.

    • getRawTypeIfParameterized

      public static Type getRawTypeIfParameterized(Type type)
      Returns the raw type if the given type is parameterized, if not returns the type.
      Parameters:
      type - the type to convert
      Returns:
      the raw type if parameterized

    • equals

      public static boolean equals(Type t1, Type t2)
      Check equality of types.
      Parameters:
      t1 - the first type
      t2 - the second type
      Returns:
      boolean