diff -r 6eede6088d41 -r 3f30adba1c63 src/main/kotlin/de/uapcore/lightpit/dao/AbstractDao.kt
--- a/src/main/kotlin/de/uapcore/lightpit/dao/AbstractDao.kt	Sun Dec 20 11:06:25 2020 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,65 +0,0 @@
-/*
- * Copyright 2020 Mike Becker. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-package de.uapcore.lightpit.dao
-
-import java.sql.PreparedStatement
-import java.sql.ResultSet
-import java.sql.Types
-
-abstract class AbstractDao<T> {
-
-    abstract fun mapResult(rs: ResultSet): T
-
-    protected fun list(stmt: PreparedStatement): List<T> {
-        return sequence {
-            stmt.executeQuery().use { result ->
-                while (result.next()) yield(mapResult(result))
-            }
-        }.toList()
-    }
-
-    protected fun find(stmt: PreparedStatement): T? {
-        stmt.executeQuery().use { result ->
-            return if (result.next()) {
-                mapResult(result)
-            } else {
-                null
-            }
-        }
-    }
-
-    // TODO: create PreparedStatement abstraction that provides some features
-
-    // TODO: remove the following legacy code helper function
-    protected fun <T> setForeignKeyOrNull(stmt: PreparedStatement, index: Int, instance: T?, keyGetter: (obj: T) -> Int) {
-        if (instance == null) {
-            stmt.setNull(index, Types.INTEGER)
-        } else {
-            stmt.setInt(index, keyGetter(instance))
-        }
-    }
-}
\ No newline at end of file