Package org.dellroad.stuff.vaadin7

Class StringValuePropertyDef

java.lang.Object

org.dellroad.stuff.vaadin7.PropertyDef<String>

org.dellroad.stuff.vaadin7.StringValuePropertyDef

All Implemented Interfaces:

Serializable, PropertyExtractor<Object>, SortingPropertyExtractor<Object>

public class StringValuePropertyDef
extends PropertyDef<String>
implements SortingPropertyExtractor<Object>

A PropertyDef representing the String value of an object using Object#toString().

Instances also serve as a SortingPropertyExtractor that can actually extract the property from any object.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.dellroad.stuff.vaadin7.PropertyDef

SORT_BY_NAME

Constructor Summary

Constructors

Constructor	Description
StringValuePropertyDef(String name)	Constructor.

Method Summary

Modifier and Type	Method	Description
boolean	canSort(PropertyDef<?> propertyDef)	Determine if the given property can be sorted by this instance.
<V> V	getPropertyValue(Object obj, PropertyDef<V> propertyDef)	Read the value of the property defined by propertyDef from the given object.
int	sort(PropertyDef<?> propertyDef, Object obj1, Object obj2)	Sort two values based on the given property.

Methods inherited from class org.dellroad.stuff.vaadin7.PropertyDef

addTo, addTo, addTo, cast, createProperty, createProperty, createProperty, equals, get, get, getDefaultValue, getName, getPropertyId, getType, hashCode, isSortable, read, sort, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

StringValuePropertyDef

public StringValuePropertyDef(String name)

Constructor.

Parameters:

name - property name; also serves as the property ID

Method Detail

getPropertyValue

public <V> V getPropertyValue(Object obj,
                              PropertyDef<V> propertyDef)

Description copied from interface: PropertyExtractor

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

Specified by:

getPropertyValue in interface PropertyExtractor<Object>

Type Parameters:

V - value type

Parameters:

obj - Java object

propertyDef - definition of which property to read

Returns:

property value

canSort

public boolean canSort(PropertyDef<?> propertyDef)

Description copied from interface: SortingPropertyExtractor

Determine if the given property can be sorted by this instance. If this method returns false, then the property's sorting resorts to the default behavior, i.e., depending on whether the property value implements Comparable.

Specified by:

canSort in interface SortingPropertyExtractor<Object>

Parameters:

propertyDef - definition of property

Returns:

true if the property defined by propertyDef can be sorted by this instance

sort

public int sort(PropertyDef<?> propertyDef,
                Object obj1,
                Object obj2)

Description copied from interface: SortingPropertyExtractor

Sort two values based on the given property.

Specified by:

sort in interface SortingPropertyExtractor<Object>

Parameters:

propertyDef - definition of property to sort on

obj1 - first Java object

obj2 - second Java object

Returns:

result of comparing obj1's property value to obj2's property value