org.seedstack.business.domain

Class BaseValueObject

java.lang.Object

org.seedstack.business.domain.BaseValueObject

All Implemented Interfaces:

Serializable, Producible, ValueObject

Direct Known Subclasses:

BaseDomainEvent

public abstract class BaseValueObject
extends Object
implements ValueObject, Serializable

An helper base class that can be extended to create a domain value object. If extending this base class is not desirable, you can instead do one of the following:

• Implement ValueObject,
• Annotate your class with DomainValueObject.

This base class provides an implementation equals(Object) and hashCode() methods based on all the value object attributes. This mechanism is reflection-based and can be overridden for performance purposes. When doing so, take care of respecting the semantics of value object equality.

See Also:

ValueObject, DomainValueObject, Serialized Form

Constructor Summary

Constructors

Constructor and Description
BaseValueObject()

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object other) Computes the equality by reflection on all non-transient fields.
int	hashCode() Computes the hash code by reflection on all non-transient fields.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseValueObject

public BaseValueObject()

Method Detail

hashCode

public int hashCode()

Computes the hash code by reflection on all non-transient fields. This method can is quite costly and may be overridden by an optimized version if performance is critical. Be sure to respect the equality semantics for value objects when doing so.

Specified by:

hashCode in interface ValueObject

Overrides:

hashCode in class Object

Returns:

Hash code built from all non-transient fields.

equals

public boolean equals(Object other)

Computes the equality by reflection on all non-transient fields. This method can be quite costly and may be overridden by an optimized version if performance is critical. Be sure to respect the equality semantics for value objects when doing so.

Specified by:

equals in interface ValueObject

Overrides:

equals in class Object

Parameters:

other - other object

Returns:

true if the other object is a ValueObject and has the same value as this value object, false otherwise.

toString

public String toString()

Overrides:

toString in class Object