Object graph: Difference between revisions

Revision as of 04:09, 6 November 2013

Revision as of 00:08, 7 November 2014

Line 1:

{{Unreferenced|date=OctoberNovember 20092014}}

{{Inappropriate tone|date=DecemberNovember 20072014}}

In [[computer science]], an '''object graph''' is a view of an [[object system]] at a particular point in time. Whereas a normal [[data model]] such as a [[Unified Modeling Language|UML]] [[Class diagram]] details the relationships between classes, the object graph relates their instances. [[Object diagram]]s are subsets of the overall object graph.

Object-oriented applications contain complex webs of interrelated objects. Objects are linked to each other by one object either owning or containing another object or holding a reference to another object. This web of objects is called an object graph and it is the more abstract structure that can be used in discussing an application's state.

Line 9:

==Examples==

{{Expand section|date=March 2007}}

For instance, a Car class can compose a Wheel one. In the object graph a Car instance will have up to four links to its wheels, which can be named frontLeft, frontRight, backLeft and backRight.

Example of an [[adjacency list]] representation: c:Car → {frontLeft:Wheel, frontRight:Wheel, backLeft:Wheel, backRight:Wheel}.

Line 18 ⟶ 17:

{{DEFAULTSORT:Object Graph}}

[[Category:Data modeling diagrams]]