Example usage for java.lang.reflect Field getGenericType

Introduction

In this page you can find the example usage for java.lang.reflect Field getGenericType.

Prototype

public Type getGenericType()

Source Link

Document

Returns a Type object that represents the declared type for the field represented by this Field object.

Usage

From source file:FieldSpy.java

public static void main(String... args) {
    try {// www .  j  a v  a 2  s. co m
        Class<?> c = Class.forName("FieldSpy");
        Field f = c.getField("name");
        System.out.format("Type: %s%n", f.getType());
        System.out.format("GenericType: %s%n", f.getGenericType());

        // production code should handle these exceptions more gracefully
    } catch (ClassNotFoundException x) {
        x.printStackTrace();
    } catch (NoSuchFieldException x) {
        x.printStackTrace();
    }
}

From source file:Main.java

public static Class<?> getGenericType(Field f) {
    Type type = f.getGenericType();
    if (type instanceof ParameterizedType) {
        type = ((ParameterizedType) type).getActualTypeArguments()[0];
        if (type instanceof Class<?>)
            return (Class<?>) type;
    } else if (type instanceof Class<?>)
        return (Class<?>) type;
    return null;//from w  w w.  j a  va 2 s. c o  m
}

From source file:Main.java

private static Class<?> getEntityClass(Field field) {
    Type genType = field.getGenericType();
    if (genType instanceof ParameterizedType) {
        ParameterizedType pt = (ParameterizedType) genType;
        Type type = pt.getActualTypeArguments()[0];
        return (Class<?>) type;
    }/*from   ww w  . j  a v a2  s  . c  o  m*/
    return null;
}

From source file:Main.java

public static Class<?> getCollectionType(Field field) {
    if (field.getGenericType() instanceof ParameterizedType) {
        ParameterizedType type = (ParameterizedType) field.getGenericType();
        return (Class<?>) type.getActualTypeArguments()[0];
    }// w  ww .j  a v  a 2s  .  co  m
    return Object.class;
}

From source file:Main.java

public static Type getFieldType(Class<?> clazz, String fieldName) {
    try {//from w w  w .  j a  va2s.c om
        Field field = clazz.getField(fieldName);

        return field.getGenericType();
    } catch (Exception ex) {
        return null;
    }
}

From source file:Main.java

/**
 * getChildClass/*from  w w w  .j  av a 2s .  c om*/
 *
 * @param field List<Child> children type
 * @return thie child class
 */
public static Class getChildClass(Field field) {
    Type t = field.getGenericType();
    Type actualType = ((ParameterizedType) t).getActualTypeArguments()[0];
    Class subclass = null;
    try {
        subclass = Class.forName(actualType.getClass().getName());
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
    }
    System.out.println(subclass.getSimpleName());
    return subclass;
}

From source file:Main.java

public static Class<?>[] getFieldGenericArgs(Field field) {
    Type genericType = field.getGenericType();
    if (genericType instanceof ParameterizedType) {
        return getGenericArgs((ParameterizedType) genericType);
    } else {//from ww  w  . j av a 2  s  .c om
        return new Class<?>[0];
    }
}

From source file:Main.java

static Class<?> getParametricClass(Field field) {
    ParameterizedType paramType = (ParameterizedType) field.getGenericType();
    return getParametricClass(paramType);
}

From source file:com.cognifide.qa.bb.mapper.field.PageObjectProviderHelper.java

/**
 * Gets generic type from field (if field type is {@link ParameterizedType})
 * /*w w  w .  ja v a  2s .com*/
 * @param field class field
 * @return generic type
 */
public static Class<?> getGenericType(Field field) {
    Type type = field.getGenericType();
    if (type instanceof ParameterizedType) {
        Type firstParameter = ((ParameterizedType) type).getActualTypeArguments()[0];
        if (!(firstParameter instanceof WildcardType)) {
            return (Class<?>) firstParameter;
        }
    }
    return null;
}

From source file:com.github.jasonruckman.sidney.core.type.Types.java

public static TypeBindings binding(Field field, TypeBindings parentBindings) {
    Type t = field.getGenericType();
    if (t == null) {
        t = field.getType();// www  . ja va 2s.  co  m
    }
    JavaType javaType = TypeFactory.defaultInstance().constructType(t, parentBindings);
    return new TypeBindings(TypeFactory.defaultInstance(), javaType);
}