add server in version 0.5.0 as initial commit for future work on github

src/main/java/de/ul/swtp/system/UserManager.java

@@ -0,0 +1,45 @@
+package de.ul.swtp.system;
+
+import de.ul.swtp.modules.contactmanagement.Group;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.security.access.prepost.PreAuthorize;
+
+import java.util.List;
+
+public interface UserManager {
+
+    @PreAuthorize("hasAuthority('SYS_USER_GETALL') or hasAuthority('ROLE_ADMIN')")
+    Page<User> getAll(Pageable pageable);
+
+    @PreAuthorize("hasAuthority('SYS_USER_GETUSERBYID') or hasAuthority('ROLE_ADMIN')")
+    User getUserById(Long id);
+
+    @PreAuthorize("hasAuthority('SYS_USER_GETUSERSBYIDS') or hasAuthority('ROLE_ADMIN')")
+    Page<User> getUsersByIds(List<Long> userIds, Pageable pageable);
+
+    @PreAuthorize("hasAuthority('SYS_USER_GETUSERBYUSERNAME') or hasAuthority('ROLE_ADMIN')")
+    User getUserByUsername(String username);
+
+    @PreAuthorize("hasAuthority('SYS_USER_GETALLBYROLE') or hasAuthority('ROLE_ADMIN')")
+    List<User> getAllByRole(Role role);
+
+    @PreAuthorize("hasAuthority('SYS_USER_GETALLBYGROUP') or hasAuthority('ROLE_ADMIN')")
+    List<User> getAllByGroup(Group group);
+
+    @PreAuthorize("hasAuthority('SYS_USER_CREATE') or hasAuthority('ROLE_ADMIN')")
+    User create(User user);
+
+    @PreAuthorize("hasAuthority('SYS_USER_UPDATE') or hasAuthority('ROLE_ADMIN')")
+    User update(Long id, User user);
+
+    @PreAuthorize("hasAuthority('SYS_USER_UPDATE') or hasAuthority('ROLE_ADMIN')")
+    User updateWithoutTouchingAcl(Long id, User user);
+
+    @PreAuthorize("hasAuthority('SYS_USER_DELETE') or hasAuthority('ROLE_ADMIN')")
+    void delete(Long id);
+
+    void enableUser(Long id);
+
+    User signUpUser(User user);
+}