Move all file in fr.dcproject.

src/main/kotlin/fr/dcproject/common/entity/Extra.kt

@@ -0,0 +1,66 @@
+package fr.dcproject.common.entity
+
+import fr.dcproject.component.article.ArticleRef
+import fr.dcproject.component.citizen.CitizenI
+import fr.dcproject.component.comment.generic.CommentRef
+import fr.dcproject.component.constitution.ConstitutionRef
+import fr.dcproject.component.opinion.entity.OpinionRef
+import fr.postgresjson.entity.EntityCreatedAt
+import fr.postgresjson.entity.EntityCreatedBy
+import fr.postgresjson.entity.UuidEntity
+import fr.postgresjson.entity.UuidEntityI
+import java.util.UUID
+import kotlin.reflect.KClass
+import kotlin.reflect.full.isSubclassOf
+
+interface ExtraI<T : TargetI, C : CitizenI> :
+    UuidEntityI,
+    HasTarget<T>,
+    EntityCreatedAt,
+    EntityCreatedBy<C>
+
+interface HasTarget<T : TargetI> {
+    val target: T
+}
+
+open class TargetRef(id: UUID? = null, reference: String = "") : TargetI, UuidEntity(id) {
+
+    final override val reference: String
+        get() = if (field != "") field else TargetI.getReference(this)
+
+    init {
+        this.reference = reference
+    }
+}
+
+interface TargetI : UuidEntityI {
+    enum class TargetName(val targetReference: String) {
+        Article("article"),
+        Constitution("constitution"),
+        Comment("comment"),
+        Opinion("opinion")
+    }
+
+    companion object {
+        fun <T : TargetI> getReference(t: KClass<T>): String {
+            return when {
+                t.isSubclassOf(ArticleRef::class) -> TargetName.Article.targetReference
+                t.isSubclassOf(ConstitutionRef::class) -> TargetName.Constitution.targetReference
+                t.isSubclassOf(CommentRef::class) -> TargetName.Comment.targetReference
+                t.isSubclassOf(OpinionRef::class) -> TargetName.Opinion.targetReference
+                else -> throw error("target not implemented: ${t.qualifiedName} \nImplement it or return 'reference' from SQL")
+            }
+        }
+
+        fun getReference(t: TargetI): String {
+            val ref = this.getReference(t::class)
+            return if (t is ExtraI<*, *>) {
+                "${ref}_on_${t.target.reference}"
+            } else {
+                ref
+            }
+        }
+    }
+
+    val reference: String
+}