org.jboss.weld.resolution

Class CovariantTypes

java.lang.Object

org.jboss.weld.resolution.CovariantTypes

public class CovariantTypes
extends java.lang.Object

Utility class that captures standard covariant Java assignability rules. This class operates on all the possible Type subtypes: Class, ParameterizedType, TypeVariable, WildcardType, GenericArrayType. To make this class easier to understand and maintain, there is a separate isAssignableFrom method for each combination of possible types. Each of these methods compares two type instances and determines whether the first one is assignable from the other. TypeVariables are considered a specific unknown type restricted by the upper bound. No inference of type variables is performed.

Author:

Jozef Hartinger

Method Summary

Modifier and Type	Method and Description
static boolean	isAssignableFrom(java.lang.reflect.Type type1, java.lang.reflect.Type type2)
static boolean	isAssignableFromAtLeastOne(java.lang.reflect.Type type1, java.lang.reflect.Type[] types2)

Methods inherited from class java.lang.Object

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

Method Detail

isAssignableFromAtLeastOne

public static boolean isAssignableFromAtLeastOne(java.lang.reflect.Type type1,
                                                 java.lang.reflect.Type[] types2)

isAssignableFrom

public static boolean isAssignableFrom(java.lang.reflect.Type type1,
                                       java.lang.reflect.Type type2)