org.dellroad.stuff.vaadin7

Interface PropertyExtractor<T>

Type Parameters:

T - target object type for extraction

All Known Subinterfaces:

SortingPropertyExtractor<T>

All Known Implementing Classes:

AbstractQueryContainer, AbstractSimpleContainer, AbstractUnsizedContainer, EnumContainer, SelfKeyedContainer, SimpleContainer, SimpleKeyedContainer, StringValuePropertyDef, VaadinSessionContainer

public interface PropertyExtractor<T>

Classes that can extract Property values from Java objects.

Method Summary

Modifier and Type	Method and Description
<V> V	getPropertyValue(T obj, PropertyDef<V> propertyDef) Read the value of the property defined by propertyDef from the given object.

Method Detail

getPropertyValue

<V> V getPropertyValue(T obj,
                       PropertyDef<V> propertyDef)

Read the value of the property defined by propertyDef from the given object.

Type Parameters:

V - value type

Parameters:

obj - Java object

propertyDef - definition of which property to read

Returns:

property value

Throws:

IllegalArgumentException - if this instance does not recognize propertyDef

NullPointerException - if either parameter is null