Example usage for com.google.common.reflect TypeToken resolveType

Introduction

In this page you can find the example usage for com.google.common.reflect TypeToken resolveType.

Prototype

public final TypeToken<?> resolveType(Type type) 

Source Link

Document

Resolves the given type against the type context represented by this type.

Usage

From source file:org.zalando.switchboard.TypeResolver.java

static <T> Class<T> resolve(final Object instance, final Class<?> type, final int index) {
    final TypeToken<?> token = TypeToken.of(instance.getClass());
    final TypeToken<?> resolved = token.resolveType(type.getTypeParameters()[index]);
    return cast(resolved.getRawType());
}

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From source file:com.github.steveash.spring.WiringFactoryBeanFactoryPostProcessor.java

@Nullable
static java.lang.Class<?> getPrototypeClassFromFactory(Class<?> factoryClass) {
    if (!WiringFactory.class.isAssignableFrom(factoryClass))
        return null;

    TypeToken<?> tok = TypeToken.of(factoryClass);
    TypeToken<?> prototypeTok = tok.resolveType(WiringFactory.class.getTypeParameters()[0]);
    return prototypeTok.getRawType();
}

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From source file:com.google.api.server.spi.config.model.Types.java

/**
 * Gets the element type of a type we want to treat as an array. Actual arrays or subtypes of
 * {@link java.util.Collection} can be treated as arrays. Returns null if the type cannot be
 * treated as an array.//ww w.ja  v  a  2s  .c o m
 */
public static TypeToken<?> getArrayItemType(TypeToken<?> type) {
    if (type.isSubtypeOf(Collection.class)) {
        return type.resolveType(Collection.class.getTypeParameters()[0]);
    } else if (type.isArray()) {
        return type.getComponentType();
    }
    return null;
}

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From source file:ratpack.handling.internal.Extractions.java

public static void extract(List<TypeToken<?>> types, Registry registry, Object[] services, int startIndex) {
    for (int i = 0; i < types.size(); ++i) {
        TypeToken<?> type = types.get(i);
        if (type.getRawType().equals(Optional.class)) {
            TypeToken<?> paramType;
            try {
                paramType = type.resolveType(Optional.class.getMethod("get").getGenericReturnType());
            } catch (NoSuchMethodException e) {
                throw new InternalError("Optional class does not have get method");
            }/*w ww . j  av  a2  s  . c o m*/
            Object optional = registry.maybeGet(paramType);
            services[i + startIndex] = optional;

        } else {
            Object service = registry.get(type);
            services[i + startIndex] = service;
        }

    }
}

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From source file:net.navatwo.jfxproperties.MoreReflection.java

/**
 * Resolves the {@code index}th type parameter from the token.
 *
 * @param token/*w w w .  j  ava2  s  .  c  o m*/
 * @param index
 * @return
 * @throws ArrayIndexOutOfBoundsException if the type parameter doesn't exist
 */
public static TypeToken<?> resolveTypeParameter(TypeToken<?> token, int index) {
    return token.resolveType(token.getRawType().getTypeParameters()[index]);
}

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From source file:co.cask.cdap.internal.app.deploy.InMemoryConfigurator.java

private static String getSpecJson(Application app, final String bundleVersion, final String configString)
        throws IllegalAccessException, InstantiationException {
    // Now, we call configure, which returns application specification.
    DefaultAppConfigurer configurer = new DefaultAppConfigurer(app, configString);

    Config appConfig;//from   ww w .j a va2  s.c  o  m
    TypeToken typeToken = TypeToken.of(app.getClass());
    TypeToken<?> configToken = typeToken.resolveType(Application.class.getTypeParameters()[0]);
    if (Strings.isNullOrEmpty(configString)) {
        appConfig = (Config) configToken.getRawType().newInstance();
    } else {
        //TODO: CDAP-2869 Handle JsonSyntax Exception better and throw a more meaningful error. This will be done when we
        //use PluginInstantiator methods instead of GSON deserialization
        appConfig = GSON.fromJson(configString, configToken.getType());
    }

    app.configure(configurer, new DefaultApplicationContext(appConfig));
    ApplicationSpecification specification = configurer.createSpecification(bundleVersion);

    // Convert the specification to JSON.
    // We write the Application specification to output file in JSON format.
    // TODO: The SchemaGenerator should be injected
    return ApplicationSpecificationAdapter.create(new ReflectionSchemaGenerator()).toJson(specification);
}

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From source file:com.google.api.server.spi.config.model.Serializers.java

/**
 * Gets the {@code Serializer} source type for a class. This resolves placeholders in generics.
 *
 * @param clazz a class, possibly implementing {@code Transformer}
 * @return the resolved source type, null if clazz is not a serializer
 *//* w  w  w . j  av a 2s  .  c  o m*/
@Nullable
public static TypeToken<?> getSourceType(Class<? extends Transformer<?, ?>> clazz) {
    try {
        TypeToken<?> token = TypeToken.of(clazz);
        return token
                .resolveType(Transformer.class.getMethod("transformFrom", Object.class).getGenericReturnType());
    } catch (NoSuchMethodException e) {
        return null;
    }
}

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From source file:com.google.api.server.spi.config.model.Serializers.java

/**
 * Gets the {@code Serializer} target type for a class. This resolves placeholders in generics.
 *
 * @param clazz a class, possibly implementing {@code Transformer}
 * @return the resolved target type, null if clazz is not a serializer
 *///from w ww  .  j  av  a  2s.com
@Nullable
public static TypeToken<?> getTargetType(Class<? extends Transformer<?, ?>> clazz) {
    try {
        TypeToken<?> token = TypeToken.of(clazz);
        return token
                .resolveType(Transformer.class.getMethod("transformTo", Object.class).getGenericReturnType());
    } catch (NoSuchMethodException e) {
        return null;
    }
}

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From source file:com.google.api.server.spi.config.jsonwriter.JacksonResourceSchemaProvider.java

private static boolean hasUnresolvedType(TypeToken<?> type) {
    Type javaType = type.getType();
    if (javaType instanceof ParameterizedType) {
        ParameterizedType p = (ParameterizedType) javaType;
        for (Type t : p.getActualTypeArguments()) {
            if (Types.isWildcardType(type.resolveType(t))) {
                logger.warning("skipping field of type " + type + " because it is unresolved");
                return true;
            }/*from  ww w .  ja va  2 s  .c  o  m*/
        }
    }
    return false;
}

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From source file:org.jboss.errai.config.rebind.ProxyUtil.java

public static String createCallSignature(final Class<?> referenceClass, final Method m) {
    final TypeToken<?> resolver = TypeToken.of(referenceClass);
    final StringBuilder append = new StringBuilder(m.getName()).append(':');
    for (final Type c : m.getGenericParameterTypes()) {
        final TypeToken<?> resolvedParamType = resolver.resolveType(c);
        append.append(resolvedParamType.getRawType().getCanonicalName()).append(':');
    }/*  w w w.jav a2 s . c  o  m*/
    return append.toString();
}

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