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it:ad:patterns:identitymap [2019/03/24 12:02] (current)
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 +# IT:​AD:​Patterns:​IdentityMap #
  
 +
 +
 +<callout type="​Navigation"​ class="​small">​
 +* [[../​|(UP)]]
 +{{indexmenu>​.#​2|nsort tsort}}
 +
 +
 +
 +
 +
 +---
 +
 +
 +</​callout>​
 +
 +
 +<panel title="​Summary">​
 +Ensures that each object gets loaded only once by keeping every loaded object in a map. Looks up objects using the map when referring to them.
 +
 +
 +</​panel>​
 +
 +
 +### Sequence Diagram ###
 +
 +![MF](http://​martinfowler.com/​eaaCatalog/​idMapperSketch.gif)