Headline

Use of the Template design pattern in Java

Characteristics

We identify templates for queries and transformations over companies. We instantiate those templates for totaling and cutting salaries.

Illustration

The data model is implemented with object composition. For example Companies:

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Feature:Closed serialization is implemented using Language:Java Technology:Object Streams:

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Feature:Total is implemented as a Reducer (query):

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Feature:Cut is implemented as a Walker (transformation):

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Test cases are implemented for all Namespace:Features.

Relationships

For basic OO without inheritance see Contribution:javaComposition.

For basic OO with inheritance see Contribution:javaInheritance.

For modular OO programming with static methods see Contribution:javaStatic.

For use of Java reflection see Contribution:javaReflection (data processing) and Contribution:javaSyb (SYB-style generic programming).

For design patterns see Contribution:javaTemplate (template design pattern), Contribution:javaVisitor (visitor design pattern) and Contribution:javaExorcism (excessive illustration of design patterns).

Architecture

The contribution follows a standardized structure:

  • inputs contains input files for tests
  • src/main/java contains the following packages:
    • org.softlang.company.features for implementations of Functional requirements.
    • org.softlang.company.features.template for query and transformation patterns.
    • org.softlang.company.model for implementations of Feature:Company.
  • src/test/java contains the following packages:

Usage

This contribution uses Technology:Gradle for building. Technology:Eclipse is supported.

See https://github.com/101companies/101simplejava/blob/master/README.md


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