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

    if (type.getRawType() instanceof Class) {
      Type[] actualTypeArguments = type.getActualTypeArguments();
      TypeVariable[] typeVariables = ((Class) type.getRawType()).getTypeParameters();
      for (int i = 0; i < actualTypeArguments.length; i++) {
        Type actualTypeArgument = actualTypeArguments[i];
        TypeVariable variable = typeVariables[i];
        if (actualTypeArgument instanceof Class) {
          typeVariableMap.put(variable, actualTypeArgument);
        }
        else if (actualTypeArgument instanceof GenericArrayType) {
          typeVariableMap.put(variable, actualTypeArgument);
        }
        else if (actualTypeArgument instanceof ParameterizedType) {
          typeVariableMap.put(variable, ((ParameterizedType) actualTypeArgument).getRawType());
        }
        else if (actualTypeArgument instanceof TypeVariable) {
          // We have a type that is parameterized at instantiation time
          // the nearest match on the bridge method will be the bounded type.
          TypeVariable typeVariableArgument = (TypeVariable) actualTypeArgument;
          Type resolvedType = (Type) typeVariableMap.get(typeVariableArgument);
          if (resolvedType == null) {
            resolvedType = extractClassForTypeVariable(typeVariableArgument);
          }
          if (resolvedType != null) {

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

                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

                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 ParameterizedType) {
            ParameterizedType pt = (ParameterizedType)type;
            return (Class<?>)pt.getRawType();
        }
        if (type instanceof TypeVariable) {
            TypeVariable tv = (TypeVariable)type;
            Type[] bounds = tv.getBounds();
            return (0 < bounds.length) ? erase(bounds[0]) : Object.class;
        }
        if (type instanceof WildcardType) {
            WildcardType wt = (WildcardType)type;
            Type[] bounds = wt.getUpperBounds();

View Full Code Here

        } else if (type instanceof WildcardType) {
            WildcardType wType = (WildcardType)type;
            Type[] types = wType.getUpperBounds();
            return getErasure(types[0]);
        } else if (type instanceof TypeVariable) {
            TypeVariable var = (TypeVariable)type;
            Type[] types = var.getBounds();
            return getErasure(types[0]);
        }
        return null;
    }

View Full Code Here

        } else if (type instanceof WildcardType) {
            WildcardType wType = (WildcardType)type;
            Type[] types = wType.getUpperBounds();
            return getErasure(types[0]);
        } else if (type instanceof TypeVariable) {
            TypeVariable var = (TypeVariable)type;
            Type[] types = var.getBounds();
            return getErasure(types[0]);
        }
        return null;
    }

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

public class BridgeMethodResolverTests extends TestCase {


  private static TypeVariable findTypeVariable(Class clazz, String name) {
    TypeVariable[] variables = clazz.getTypeParameters();
    for (int i = 0; i < variables.length; i++) {
      TypeVariable variable = variables[i];
      if (variable.getName().equals(name)) {
        return variable;
      }
    }
    return null;
  }

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.