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how can I get a list of alle domain classes I use in my project? Something like GORM.domains.list().
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In Grails a domain is a class that lives in the grails-app/domain directory. A domain class can be created with the create-domain-class command: grails create-domain-class org.bookstore.Book. or with your favourite IDE or text editor.
If you don't specify a package (like "org. bookstore" in the example), then the name of the application will be used as the package. So if the application name is "bookstore" and you run create-domain-class Book , then the command will create the file grails-app/domain/bookstore/Book.
GORM is the data access toolkit used by Grails and provides a rich set of APIs for accessing relational and non-relational data including implementations for Hibernate (SQL), MongoDB, Neo4j, Cassandra, an in-memory ConcurrentHashMap for testing and an automatic GraphQL schema generator.
Constraints in Grails are a way to declaratively specify validation rules. Most commonly they are applied to domain classes, however URL Mappings and Command Objects also support constraints.
Using
grailsApplication.getArtefacts("Domain")
you get a list of GrailsDomainClass instances that hold meta-information regarding the domain class. The domain class itself is returned by Calling getClazz(). In short:
grailsApplication.getArtefacts("Domain")*.clazz
returns a complete list of the existing domain classes.
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