generator_of_entities.jh

// Documentation:
// ———————————————————
// See documentation at https://www.jhipster.tech/jdl/
// See https://www.jhipster.tech/creating-an-entity/
// Following documentation copied from https://github.com/JulioJu/docxapp/blob/master/doc/generator_of_entities.jh

// UML representation:
// ———————————————————
// See UML representation with http://jhipster.github.io/jdl-studio
// Jdl-studio can be use offline with docker (see documentation) or
// with http://github.com/jhipster/jdl-studio:
// `git clone http://github.com/jhipster/jdl-studio' and launch index.html
// Entities are ordored for a good representation in http://jhipster.github.io/jdl-studio

// Strategy for Fetching data
// ——————————————————————————
// IMPORTANT TO LEARN !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// VERY IMPORTANT !!!!!!!!!!!!!
// Note about lazy loading or lazy strategy for fetching data from the database
// used by JHipster
// See https://docs.oracle.com/javaee/7/api/javax/persistence/FetchType.html
// ManyToMany and OneToMany and ManyToOne have lazy loading. Therefore set<> is
    // null.
// USE "EntityGraph" for retrieve HashSet<>.
// Explanations and Examples in this project:
// ———
// * See Explanations in src/main/java/fr/alteca/docxapp/rest/userResource.java.
// See this example also at:
// https://github.com/jhipster/jhipster-sample-app/blob/master/src/main/java/io/github/jhipster/sample/web/rest/UserResource.java
// * See the example corresponding at:
// src/main/java/fr/alteca/docxapp/repository/UserRepository.java (see also this
// class at
// https://github.com/jhipster/jhipster-sample-app/blob/master/src/main/java/io/github/jhipster/sample/repository/UserRepository.java).
// * See also other examples in
// src/main/java/fr/alteca/docxapp//UserResource.java this project under
// src/main/java/fr/alteca/docxapp/repository.


// Note about JDL language
// ———————————————————————

// WARNING if you use an URL in enum, in « http:// » or « https:// »,
// « // » are interpreted as the start of a JDL comment

// name_name => namename in the Database (jdl behaviour can be reconfigured in
// Java class)
// nameName => name_name in the Database (jdl behaviour, can be reconfigured in Java class)
// relationship OneToMany {
//     Album to Photo {photoAlbum required} => bug with jdl. And it's normal !
// }


// Bidirectional OneToMany between Album and Photo and Album and Finaldoc
// ——————————————————————————————————————————————————

// Could not choose column name in database.
// It's a OneToMany Bidirectional. Both tables know otherone.

// No Join table created

// No difference between
// Album{photo} to Photo
// and
// Album{photo} to Photo{model}
// and
// Album to Photo{model}

// Following syntax doesn't work
// Album to Photo

// Album to Photo{model} =>
// in Photo.java:
// @ManyToOne
// In Album.java:
// OneToMany(mappedBy="model")

// Album to Photo{model required} ==> in Photo.java :
// @ManyToOne(optional = false)
// @NotNull

entity Album {
    name String required
}

entity Photo {
    name String required,
    /** jpeg thumbnail */
    finThumbnail ImageBlob required
}


// Bidirectional OneToMany
relationship OneToMany {
    /**
     * photo attribute should not be required because otherwise it's a vicious
     * circle
     */
    Album{photo}
        to Photo{album required}
}

/* https://github.com/jhipster/jhipster-core/issues/52 */
/* Error: Relationships from the User entity is not supported in the declaration between 'User' and 'Album'. */
/* ERROR! Error while parsing applications and entities from the JDL Error: Relationships from the User entity is not supported in the declaration between 'User' and 'Album'. */
/* relationship OneToMany { */
/*     User{album} */
/*         to Album{user required} */
/* } */
relationship ManyToOne {
    Album{user}
        to User
}

// JHipster implementatin
// ————————————————

/**
* Services for crud operations in filesystem and maybe other operations
*/
service Photo with serviceClass

paginate * with infinite-scroll

angularSuffix * with sempic