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#1113 Link uml-reverse-mapper created class diagrams to readme, where needed

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Ilkka Seppälä
2019-12-07 20:01:13 +02:00
parent 0685a505d3
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161 changed files with 246 additions and 64 deletions
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specification/README.md
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@ -19,14 +19,6 @@ candidate, from the candidate object that it is matched against. As well as its
usefulness in selection, it is also valuable for validation and for building to
order.
![alt text](./etc/specification.png "Specification")
## Applicability
Use the Specification pattern when
* You need to select a subset of objects based on some criteria, and to refresh the selection at various times.
* You need to check that only suitable objects are used for a certain role (validation).
## Explanation
Real world example
@ -190,6 +182,15 @@ Instead, we just create an instance of ``AbstractSelector`` "on the spot", using
| Composite Specification | There are a lot of selection criteria that can be combined in multiple ways, hence it is not feasible to create a class for each selector | + Very flexible, without requiring many specialized classes | - Somewhat more difficult to comprehend |
| | | + Supports logical operations | - You still need to create the base classes used as leaves |
## Class diagram
![alt text](./etc/specification.png "Specification")
## Applicability
Use the Specification pattern when
* You need to select a subset of objects based on some criteria, and to refresh the selection at various times.
* You need to check that only suitable objects are used for a certain role (validation).
## Related patterns
* Repository