org.qi4j.api.property
Class ComputedPropertyInstance<T>

java.lang.Object
  org.qi4j.api.property.AbstractPropertyInstance<T>
      org.qi4j.api.property.ComputedPropertyInstance<T>

All Implemented Interfaces:

Property<T>, PropertyInfo

public abstract class ComputedPropertyInstance<T>
extends AbstractPropertyInstance<T>

ComputedPropertyInstance is the base implementation of Property.

Field Summary

Fields inherited from class org.qi4j.api.property.AbstractPropertyInstance

propertyInfo

Constructor Summary

protected	ComputedPropertyInstance(Method accessor)
protected	ComputedPropertyInstance(PropertyInfo aPropertyInfo) Construct an instance of ComputedPropertyInstance.

Method Summary

abstract T	get() This is the method to implement.
void	set(T anIgnoredValue) Throws IllegalArgumentException exception.

Methods inherited from class org.qi4j.api.property.AbstractPropertyInstance

equals, hashCode, isComputed, isImmutable, metaInfo, qualifiedName, type

Methods inherited from class java.lang.Object

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

Constructor Detail

ComputedPropertyInstance

protected ComputedPropertyInstance(PropertyInfo aPropertyInfo)
                            throws IllegalArgumentException

Construct an instance of ComputedPropertyInstance.

Parameters:

aPropertyInfo - The property info. This argument must not be null.

Throws:

IllegalArgumentException - Thrown if the specified aPropertyInfo argument is null.

ComputedPropertyInstance

protected ComputedPropertyInstance(Method accessor)

Method Detail

get

public abstract T get()

This is the method to implement.

Returns:

Returns null by default.

set

public void set(T anIgnoredValue)
         throws IllegalArgumentException,
                IllegalStateException

Throws IllegalArgumentException exception.

Parameters:

anIgnoredValue - This value is ignored.

Throws:

IllegalArgumentException - Thrown by default.

IllegalStateException - if the property is immutable or computed