com.vaadin.data.util

Class BeanUtil

java.lang.Object

com.vaadin.data.util.BeanUtil

All Implemented Interfaces:

Serializable

public final class BeanUtil
extends Object
implements Serializable

Utility class for Java Beans information access.

Since:

7.4

Author:

Vaadin Ltd

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
static List<PropertyDescriptor>	getBeanPropertyDescriptor(Class<?> beanClass) Returns the property descriptors of a class or an interface.
static Class<?>	getPropertyType(Class<?> clazz, String propertyId) Returns propertyId class for property declared in clazz.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getBeanPropertyDescriptor

public static List<PropertyDescriptor> getBeanPropertyDescriptor(Class<?> beanClass)
                                                          throws IntrospectionException

Returns the property descriptors of a class or an interface. For an interface, superinterfaces are also iterated as Introspector does not take them into account (Oracle Java bug 4275879), but in that case, both the setter and the getter for a property must be in the same interface and should not be overridden in subinterfaces for the discovery to work correctly. NOTE : This utility method relies on introspection (and returns PropertyDescriptor) which is a part of java.beans package. The latter package could require bigger JDK in the future (with Java 9+). So it may be changed in the future. For interfaces, the iteration is depth first and the properties of superinterfaces are returned before those of their subinterfaces.

Parameters:

beanClass -

Returns:

Throws:

IntrospectionException

getPropertyType

public static Class<?> getPropertyType(Class<?> clazz,
                                       String propertyId)
                                throws IntrospectionException

Returns propertyId class for property declared in clazz. Property could be of form "property.subProperty[.subProperty2]" i.e. refer to some nested property.

Parameters:

clazz - class where property is declared

propertyId - property of form "property" or "property.subProperty[.subProperty2]"

Returns:

class of the property

Throws:

IntrospectionException