5.1.2. Application Modules
A module is the smallest structural part of CUBA application. It is a single module of application project and the corresponding JAR file with executable code.
Standard modules:
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global – includes entity classes, service interfaces, and other classes common for all tiers. It is used in all application blocks.
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core – implements services and all other components of the middle tier. It is used only in Middleware.
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gui – common components of the generic user interface. It is used in Web Client and Desktop Client.
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web – the implementation of the generic user interface based on Vaadin and other specific web client classes. It is used in Web Client block.
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desktop – an optional module – implementation of generic user interface based on Java Swing, as well as other specific desktop client classes. It is used in Desktop Client block.
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portal – an optional module – implementation of Web portal based on Spring MVC.
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polymer-client – an optional module – implementation of Polymer User Interface in JavaScript.