From ed13e314299dbf76b777b4b7f672187b4d68625c Mon Sep 17 00:00:00 2001
From: Jens Pelzetter <jens@jp-digital.de>
Date: Wed, 27 Nov 2019 20:30:59 +0100
Subject: [PATCH] Provide a way to dependencies to the CategorizationImExporter

---
 .../CategorizationImExporter.java             | 12 ++++++++++-
 ...izationImExporterDependenciesProvider.java | 20 +++++++++++++++++++
 2 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 ccm-core/src/main/java/org/libreccm/categorization/CategorizationImExporterDependenciesProvider.java

diff --git a/ccm-core/src/main/java/org/libreccm/categorization/CategorizationImExporter.java b/ccm-core/src/main/java/org/libreccm/categorization/CategorizationImExporter.java
index a69d2ddd4..8a9ff2ef5 100644
--- a/ccm-core/src/main/java/org/libreccm/categorization/CategorizationImExporter.java
+++ b/ccm-core/src/main/java/org/libreccm/categorization/CategorizationImExporter.java
@@ -25,6 +25,8 @@ import org.libreccm.imexport.Processes;
 import java.util.HashSet;
 import java.util.Set;
 
+import javax.enterprise.context.RequestScoped;
+import javax.enterprise.inject.Instance;
 import javax.inject.Inject;
 import javax.persistence.EntityManager;
 import javax.transaction.Transactional;
@@ -33,6 +35,7 @@ import javax.transaction.Transactional;
  *
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
+@RequestScoped
 @Processes(Categorization.class)
 public class CategorizationImExporter
     extends AbstractEntityImExporter<Categorization> {
@@ -40,6 +43,9 @@ public class CategorizationImExporter
     @Inject
     private EntityManager entityManager;
 
+    @Inject
+    private Instance<CategorizationImExporterDependenciesProvider> dependenciesProviders;
+
     @Override
     protected Class<Categorization> getEntityClass() {
 
@@ -48,10 +54,14 @@ public class CategorizationImExporter
 
     @Override
     protected Set<Class<? extends Exportable>> getRequiredEntities() {
-        
+
         final Set<Class<? extends Exportable>> entities = new HashSet<>();
         entities.add(Category.class);
         
+        dependenciesProviders.forEach(
+            provider -> entities.addAll(provider.getCategorizableEntities())
+        );
+
         return entities;
     }
 
diff --git a/ccm-core/src/main/java/org/libreccm/categorization/CategorizationImExporterDependenciesProvider.java b/ccm-core/src/main/java/org/libreccm/categorization/CategorizationImExporterDependenciesProvider.java
new file mode 100644
index 000000000..9f6d8d626
--- /dev/null
+++ b/ccm-core/src/main/java/org/libreccm/categorization/CategorizationImExporterDependenciesProvider.java
@@ -0,0 +1,20 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.libreccm.categorization;
+
+import org.libreccm.imexport.Exportable;
+
+import java.util.Set;
+
+/**
+ *
+ * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
+ */
+public interface CategorizationImExporterDependenciesProvider {
+
+    Set<Class<Exportable>> getCategorizableEntities();
+
+}