Examples of java.lang.reflect.TypeVariable

java.lang.reflect.TypeVariable
TypeVariable is the common superinterface for type variables of kinds. A type variable is created the first time it is needed by a reflective method, as specified in this package. If a type variable t is referenced by a type (i.e, class, interface or annotation type) T, and T is declared by the nth enclosing class of T (see JLS 8.1.2), then the creation of t requires the resolution (see JVMS 5) of the ith enclosing class of T, for i = 0 to n, inclusive. Creating a type variable must not cause the creation of its bounds. Repeated creation of a type variable has no effect.
Multiple objects may be instantiated at run-time to represent a given type variable. Even though a type variable is created only once, this does not imply any requirement to cache instances representing the type variable. However, all instances representing a type variable must be equal() to each other. As a consequence, users of type variables must not rely on the identity of instances of classes implementing this interface. @param < D> the type of generic declaration that declared theunderlying type variable. @since 1.5

   private static Class determineMapValueTypeParam(Type genericFieldType) {
      if (genericFieldType instanceof ParameterizedType) {
         ParameterizedType type = (ParameterizedType) genericFieldType;
         Type fieldArgType = type.getActualTypeArguments()[1];
         if (fieldArgType instanceof TypeVariable) {
            TypeVariable genericComponentType = (TypeVariable) fieldArgType;
            return (Class) genericComponentType.getBounds()[0];
         } else {
            return (Class) fieldArgType;
         }
      } else if (genericFieldType instanceof Class) {
         Class genericFieldType1 = (Class) genericFieldType;

View Full Code Here

         type = ((ParameterizedClassInfo) classInfo).parameterizedType;


      Type result = locateActualType(reference, parameter, classInfo.getType(), type);
      if (result instanceof TypeVariable)
      {
         TypeVariable typeVariable = (TypeVariable) result;
         result = typeVariable.getBounds()[0];
      }
      return getTypeInfo(result);
   }

View Full Code Here

      Class<?> t = null;
      if(t0 instanceof Class)
         t = (Class<?>) t0;
      else if(t0 instanceof TypeVariable)
      {
         TypeVariable tv = (TypeVariable) t0;
         t = (Class<?>)tv.getBounds()[0];
      }
      
      // Add processed annotations
      addProcessedAnnotations(scope, processor.getAnnotationTypes());

View Full Code Here

                ParameterizedType pt = (ParameterizedType)t;
                Type[] args = pt.getActualTypeArguments();
                for (int i = 0; i < args.length; i++) {
                    Type arg = args[i];
                    if (arg instanceof TypeVariable) {
                        TypeVariable var = (TypeVariable)arg;
                        Type[] bounds = var.getBounds();
                        boolean isResolved = false;
                        for (int j = 0; j < bounds.length; j++) {
                            Class<?> cls = InjectionUtils.getRawType(bounds[j]);
                            if (cls != null && cls.isAssignableFrom(expectedType)) {
                                isResolved = true;

View Full Code Here

        }
        if (type instanceof TypeVariable) {
            if (parameterizedTypes == null) {
                processParameterizedTypes();
            }
            TypeVariable var = (TypeVariable)type;
            Map<String, Class<?>> mp = parameterizedTypes.get(var.getGenericDeclaration());
            if (mp != null) {
                Class<?> c = parameterizedTypes.get(var.getGenericDeclaration()).get(var.getName());
                if (c != null) {
                    rawClass = c;
                    type = c;
                    part.getMessageInfo().setProperty("parameterized", Boolean.TRUE);
                }

View Full Code Here

    {
        Asserts.assertNotNull(type, "type parameter can not be null");
        
        if (type instanceof TypeVariable)
        {
            TypeVariable wc = (TypeVariable)type;
            Type[] upper = wc.getBounds();            
            
            
            if(upper.length > 1)
            {
                return false;

View Full Code Here

            GenericArrayType gt = (GenericArrayType)cls;
            Type componentType = gt.getGenericComponentType();
            if (componentType instanceof Class) {
                ct = (Class)componentType;
            } else {
                TypeVariable tv = (TypeVariable)componentType;
                Type[] bounds = tv.getBounds();
                if (bounds != null && bounds.length == 1) {
                    if (bounds[0] instanceof Class) {
                        ct = (Class)bounds[0];
                    } else {
                        throw new IllegalArgumentException("Unable to determine type for: " + tv);

View Full Code Here

            }


            int i = 0;
            for (Type type : typeArguments)
            {
                TypeVariable typeVariable = typeVariables[i];
                Type[] bounds = typeVariable.getBounds();


                Class<?> clazzBound = (Class<?>) bounds[0];


                if (!clazzBound.isAssignableFrom((Class<?>) type))
                {

View Full Code Here

                ParameterizedType pt = (ParameterizedType)t;
                Type[] args = pt.getActualTypeArguments();
                for (int i = 0; i < args.length; i++) {
                    Type arg = args[i];
                    if (arg instanceof TypeVariable) {
                        TypeVariable var = (TypeVariable)arg;
                        Type[] bounds = var.getBounds();
                        boolean isResolved = false;
                        for (int j = 0; j < bounds.length; j++) {
                            Class<?> cls = InjectionUtils.getRawType(bounds[j]);
                            if (cls != null && cls.isAssignableFrom(expectedType)) {
                                isResolved = true;

View Full Code Here

      if (type.isArray()) {
         if (genericType instanceof Class) {
            return type.getComponentType();
         }
         GenericArrayType genericArrayType = (GenericArrayType) genericType;
         TypeVariable genericComponentType = (TypeVariable) genericArrayType.getGenericComponentType();
         return (Class) genericComponentType.getBounds()[0];
      } else if (Collection.class.isAssignableFrom(type)) {
         return determineCollectionElementType(genericType);
      } else if (Map.class.isAssignableFrom(type)) {
         return determineMapValueTypeParam(genericType);
      }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of java.lang.reflect.TypeVariable

booton.translator.JavaSignatureCompiler

com.alibaba.fastjson.parser.deserializer.ArrayDeserializer

com.alibaba.fastjson.parser.deserializer.ArrayListTypeFieldDeserializer

com.caucho.config.reflect.BaseType

com.esotericsoftware.kryo.serializers.FieldSerializerGenericsUtil

com.github.jmkgreen.morphia.utils.ReflectionUtils

com.google.common.reflect.TypeResolver

com.google.common.reflect.Types$TypeVariableImpl

com.google.greaze.server.internal.utils.UrlParamsExtractorTest

com.google.inject.TypeLiteral

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.