Patterns, Principles, and Practices of Domain-Driven Design by Scott Millett & Nick Tune

Author:Scott Millett & Nick Tune [Millett, Scott & Tune, Nick]
Language: eng
Format: epub
ISBN: 9781118714690
Publisher: Wiley
Published: 2015-04-16T00:00:00+00:00

When to Use a Value Object

Value objects are an entity’s state, describing something about the entity or the things it owns. A ship may have a maximum cargo capacity, a grocery may have a stock level, and a financial report may have quarterly turnovers. Each of these relationships would likely be modeled as an entity-value object relationship. For each example, note how the value object represents a particular concept that has a measurement, magnitude, or value—hence, value object. Two key rationales make value objects an important technical construct in DDD.

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