diff -r 6105ee2cceaf -r 947d0f6a6a83 src/main/java/de/uapcore/lightpit/dao/IssueDao.java
--- a/src/main/java/de/uapcore/lightpit/dao/IssueDao.java	Thu Oct 15 12:27:05 2020 +0200
+++ b/src/main/java/de/uapcore/lightpit/dao/IssueDao.java	Thu Oct 15 13:31:52 2020 +0200
@@ -36,18 +36,7 @@
 import java.sql.SQLException;
 import java.util.List;
 
-public interface IssueDao extends GenericDao<Issue> {
-
-    /**
-     * Lists all issues for the specified project.
-     * This is not guaranteed to contain version information.
-     * Use {@link #joinVersionInformation(Issue)} to obtain this information for a specific issue.
-     *
-     * @param project the project
-     * @return a list of issues
-     * @throws SQLException on any kind of SQL error
-     */
-    List<Issue> list(Project project) throws SQLException;
+public interface IssueDao extends ChildEntityDao<Issue, Project> {
 
     /**
      * Lists all issues that are somehow related to the specified version.
@@ -82,11 +71,12 @@
      * Implementations of this DAO must guarantee that the generated ID is stored in the instance.
      *
      * @param instance the instance to insert
+     * @param project the parent project
      * @throws SQLException on any kind of SQL error
      * @see Issue#setId(int)
      */
     @Override
-    void save(Issue instance) throws SQLException;
+    void save(Issue instance, Project project) throws SQLException;
 
     /**
      * Retrieves the affected, scheduled and resolved versions for the specified issue.