Example usage for java.lang Class getGenericSuperclass

Introduction

In this page you can find the example usage for java.lang Class getGenericSuperclass.

Prototype

public Type getGenericSuperclass() 

Source Link

Document

Returns the Type representing the direct superclass of the entity (class, interface, primitive type or void) represented by this Class .

Usage

From source file:ClassUtils.java

static public Type[] getGenericType(Class<?> target) {
    if (target == null)
        return new Type[0];
    Type[] types = target.getGenericInterfaces();
    if (types.length > 0) {
        return types;
    }/*w  w  w  .  jav a 2  s .  c  o m*/
    Type type = target.getGenericSuperclass();
    if (type != null) {
        if (type instanceof ParameterizedType) {
            return new Type[] { type };
        }
    }
    return new Type[0];
}

---

From source file:com.feilong.core.lang.reflect.TypeUtil.java

/**
 *  superclass parameterized type./*from  w w w.j  a v a2 s  .c o m*/
 *
 * @param klass
 *            the klass
 * @return the superclass parameterized type
 * @see java.lang.Class#getGenericSuperclass()
 */
private static ParameterizedType getGenericSuperclassParameterizedType(Class<?> klass) {
    Validate.notNull(klass, "klass can't be null/empty!");

    Class<?> useClass = klass;
    Type type = useClass.getGenericSuperclass(); //com.feilong.core.lang.reflect.res.BaseSolrRepositoryImpl<com.feilong.core.lang.reflect.res.SkuItem, java.lang.Long>

    while (!(type instanceof ParameterizedType) && Object.class != useClass) {
        useClass = useClass.getSuperclass();
        type = useClass.getGenericSuperclass();
    }

    return (ParameterizedType) type;
}

---

From source file:com.google.code.guice.repository.spi.TypeUtil.java

public static void getGenericSuperclassActualTypes(Collection<Type> types, Class aClass) {
    if (aClass != null && types != null) {
        Type superclass = aClass.getGenericSuperclass();
        if (superclass instanceof ParameterizedType) {
            ParameterizedType parameterizedType = (ParameterizedType) superclass;
            Type[] interfaces = parameterizedType.getActualTypeArguments();
            types.addAll(Arrays.asList(interfaces));
        } else if (superclass instanceof Class) {
            Class sClass = (Class) superclass;
            getGenericInterfacesActualTypes(types, sClass);
            getGenericSuperclassActualTypes(types, aClass.getSuperclass());
        }//from  ww  w  .j  a  v  a 2s . c  o m
    }
}

---

From source file:com.iflytek.edu.cloud.frame.utils.ReflectionUtils.java

/**
 * ??,Class?. public UserDao extends// w ww. j av a  2  s .com
 * HibernateDao<User,Long>
 *
 * @param clazz clazz The class to introspect
 * @param index the Index of the generic ddeclaration,start from 0.
 * @return the index generic declaration, or Object.class if cannot be
 * determined
 */

public static Class getSuperClassGenricType(final Class clazz, final int index) {

    Type genType = clazz.getGenericSuperclass();

    if (!(genType instanceof ParameterizedType)) {
        logger.warn(clazz.getSimpleName() + "'s superclass not ParameterizedType");
        return Object.class;
    }

    Type[] params = ((ParameterizedType) genType).getActualTypeArguments();

    if (index >= params.length || index < 0) {
        logger.warn("Index: " + index + ", Size of " + clazz.getSimpleName() + "'s Parameterized Type: "
                + params.length);
        return Object.class;
    }
    if (!(params[index] instanceof Class)) {
        logger.warn(clazz.getSimpleName() + " not set the actual class on superclass generic parameter");
        return Object.class;
    }
    return (Class) params[index];
}

---

From source file:com.sunchenbin.store.feilong.core.lang.reflect.TypeUtil.java

/**
 *  superclass parameterized type./*from   www . j  ava2  s  .c  o  m*/
 *
 * @param klass
 *            the klass
 * @return the superclass parameterized type
 * @see java.lang.Class#getGenericSuperclass()
 */
private static ParameterizedType getGenericSuperclassParameterizedType(Class<?> klass) {
    if (Validator.isNullOrEmpty(klass)) {
        throw new NullPointerException("klass can't be null/empty!");
    }

    Class<?> useClass = klass;
    Type type = useClass.getGenericSuperclass(); //com.sunchenbin.store.feilong.core.lang.reflect.res.BaseSolrRepositoryImpl<com.sunchenbin.store.feilong.core.lang.reflect.res.SkuItem, java.lang.Long>

    while (!(type instanceof ParameterizedType) && Object.class != useClass) {
        useClass = useClass.getSuperclass();
        type = useClass.getGenericSuperclass();
    }

    return (ParameterizedType) type;
}

---

From source file:GenericsUtil.java

/**
 * Returns all of the {@link ParameterizedType}s implemented
 * by the given class.  If none are implemented then an array
 * of zero length is returned.//w w  w  . ja va 2s  . com
 * @param clazz the class
 * @return an array of ParameterizedType
 */
public static ParameterizedType[] getGenericTypes(Class<?> clazz) {
    List<ParameterizedType> types = new ArrayList<ParameterizedType>();

    // add superclass
    if (clazz.getGenericSuperclass() instanceof ParameterizedType) {
        types.add((ParameterizedType) clazz.getGenericSuperclass());
    }

    // add interfaces
    for (Type type : clazz.getGenericInterfaces()) {
        if (type instanceof ParameterizedType) {
            types.add((ParameterizedType) type);
        }
    }

    // return list
    return types.toArray(new ParameterizedType[0]);
}

---

From source file:cn.geobeans.web.common.utils.ReflectionUtils.java

/**
 * ??, Class?.//from  w  ww  .  java  2  s.c om
 * , Object.class.
 * 
 * public UserDao extends HibernateDao<User,Long>
 *
 * @param clazz clazz The class to introspect
 * @param index the Index of the generic ddeclaration,start from 0.
 * @return the index generic declaration, or Object.class if cannot be determined
 */
@SuppressWarnings("unchecked")
public static Class getSuperClassGenricType(final Class clazz, final int index) {

    Type genType = clazz.getGenericSuperclass();

    if (!(genType instanceof ParameterizedType)) {
        logger.warn(clazz.getSimpleName() + "'s superclass not ParameterizedType");
        return Object.class;
    }

    Type[] params = ((ParameterizedType) genType).getActualTypeArguments();

    if (index >= params.length || index < 0) {
        logger.warn("Index: " + index + ", Size of " + clazz.getSimpleName() + "'s Parameterized Type: "
                + params.length);
        return Object.class;
    }
    if (!(params[index] instanceof Class)) {
        logger.warn(clazz.getSimpleName() + " not set the actual class on superclass generic parameter");
        return Object.class;
    }

    return (Class) params[index];
}

---

From source file:cn.taqu.core.modules.utils.ReflectionUtils.java

/**
 * ??, Class?.//from   w w  w. j av  a 2s  .  c om
 * , Object.class.
 * 
 * public UserDao extends HibernateDao<User,Long>
 * 
 * @param clazz clazz The class to introspect
 * @param index the Index of the generic ddeclaration,start from 0.
 * @return the index generic declaration, or Object.class if cannot be determined
 */
public static Class<?> getSuperClassGenricType(final Class<?> clazz, final int index) {

    Type genType = clazz.getGenericSuperclass();

    if (!(genType instanceof ParameterizedType)) {
        logger.warn(clazz.getSimpleName() + "'s superclass not ParameterizedType");
        return Object.class;
    }

    Type[] params = ((ParameterizedType) genType).getActualTypeArguments();

    if ((index >= params.length) || (index < 0)) {
        logger.warn("Index: " + index + ", Size of " + clazz.getSimpleName() + "'s Parameterized Type: "
                + params.length);
        return Object.class;
    }
    if (!(params[index] instanceof Class)) {
        logger.warn(clazz.getSimpleName() + " not set the actual class on superclass generic parameter");
        return Object.class;
    }

    return (Class<?>) params[index];
}

---

From source file:com.yize.broadcast.core.util.ReflectionUtils.java

/**
 * ??, Class?. , Object.class./*from  w ww. j  a  v a2 s  .co m*/
 * 
 * public UserDao extends HibernateDao<User,Long>
 * 
 * @param clazz
 *            clazz The class to introspect
 * @param index
 *            the Index of the generic ddeclaration,start from 0.
 * @return the index generic declaration, or Object.class if cannot be
 *         determined
 */
public static Class<?> getSuperClassGenricType(final Class<?> clazz, final int index) {

    Type genType = clazz.getGenericSuperclass();

    if (!(genType instanceof ParameterizedType)) {
        LOGGER.warn(clazz.getSimpleName() + "'s superclass not ParameterizedType");
        return Object.class;
    }

    Type[] params = ((ParameterizedType) genType).getActualTypeArguments();

    if (index >= params.length || index < 0) {
        LOGGER.warn("Index: " + index + ", Size of " + clazz.getSimpleName() + "'s Parameterized Type: "
                + params.length);
        return Object.class;
    }
    if (!(params[index] instanceof Class)) {
        LOGGER.warn(clazz.getSimpleName() + " not set the actual class on superclass generic parameter");
        return Object.class;
    }

    return (Class<?>) params[index];
}

---

From source file:com.lily.dap.util.ReflectionUtils.java

/**
 * , Class.//from  w ww . j  av a  2  s . c  o m
 * , Object.class.
 * 
 * public UserDao extends HibernateDao<User,Long>
 *
 * @param clazz clazz The class to introspect
 * @param index the Index of the generic ddeclaration,start from 0.
 * @return the index generic declaration, or Object.class if cannot be determined
 */

public static Class getSuperClassGenricType(final Class clazz, final int index) {

    Type genType = clazz.getGenericSuperclass();

    if (!(genType instanceof ParameterizedType)) {
        logger.warn(clazz.getSimpleName() + "'s superclass not ParameterizedType");
        return Object.class;
    }

    Type[] params = ((ParameterizedType) genType).getActualTypeArguments();

    if (index >= params.length || index < 0) {
        logger.warn("Index: " + index + ", Size of " + clazz.getSimpleName() + "'s Parameterized Type: "
                + params.length);
        return Object.class;
    }
    if (!(params[index] instanceof Class)) {
        logger.warn(clazz.getSimpleName() + " not set the actual class on superclass generic parameter");
        return Object.class;
    }

    return (Class) params[index];
}

---

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