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19 lines
539 B
Markdown
19 lines
539 B
Markdown
# Builder
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## Purpose
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Builder is an interface that build parts of a complex object.
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Sometimes, if the builder has a better knowledge of what it builds, this interface could be an abstract class with default methods (aka adapter).
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If you have a complex inheritance tree for objects, it is logical to have a complex inheritance tree for builders too.
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Note: Builders have often a fluent interface, see the mock builder of PHPUnit for example.
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## Examples
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* PHPUnit: Mock Builder
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## UML Diagram
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