added tests, preparing submission confirmation

src/main/java/de/srsoftware/widerhall/data/MailingList.java

@@ -3,6 +3,7 @@ package de.srsoftware.widerhall.data;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import javax.xml.crypto.Data;
 import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -63,19 +64,19 @@ public class MailingList {
                 .append(SMTP_PASS).append(" ").append(VARCHAR).append(", ")
                 .append(STATE).append(" ").append(INT)
                 .append(");");
-        Database.open().query(sql.toString()).run();
+        Database.open().query(sql).run();
     }
 
     public static void enable(String listEmail, boolean enable) throws SQLException {
         // https://stackoverflow.com/questions/16440831/bitwise-xor-in-sqlite-bitwise-not-not-working-as-i-expect
         String expression = enable ? "state = state | "+ENABLED : "state = (~(state & "+ENABLED+"))&(state|"+ENABLED+")";
-        Database.open().query("UPDATE " + TABLE_NAME + " SET "+expression).where(EMAIL, listEmail).run();
+        Database.open().update(TABLE_NAME,expression).where(EMAIL, listEmail).run();
     }
 
     public static void hide(String listEmail, boolean hide) throws SQLException {
         // https://stackoverflow.com/questions/16440831/bitwise-xor-in-sqlite-bitwise-not-not-working-as-i-expect
         String expression = hide ? "state = (~(state & "+PUBLIC+"))&(state|"+PUBLIC+")" : ("state = state | "+PUBLIC);
-        Database.open().query("UPDATE " + TABLE_NAME + " SET "+expression).where(EMAIL, listEmail).run();
+        Database.open().update(TABLE_NAME,expression).where(EMAIL, listEmail).run();
     }
 
     public static List<MailingList> listsOf(User user) {
@@ -84,7 +85,7 @@ public class MailingList {
         var list = new ArrayList<MailingList>();
         if (keys != null && keys.isEmpty()) return list;
         try {
-            Database.Request query = Database.open().query("SELECT * FROM " + TABLE_NAME);
+            Database.Request query = Database.open().select(TABLE_NAME);
             if (keys != null) query.where(EMAIL, keys);
             var rs = query.exec();
             while (rs.next()) {
@@ -110,7 +111,10 @@ public class MailingList {
     public static List<MailingList> openLists() {
         var list = new ArrayList<MailingList>();
         try {
-            var rs = Database.open().query("SELECT *, (" + STATE + " & " + PUBLIC + ") as test FROM " + TABLE_NAME).where("test", PUBLIC).exec();
+            var rs = Database.open()
+                    .select(TABLE_NAME,"*", "(" + STATE + " & " + PUBLIC + ") as test")
+                    .where("test", PUBLIC)
+                    .exec();
             while (rs.next()) {
                 var email = rs.getString(EMAIL);
                 var name = rs.getString(NAME);
@@ -127,6 +131,31 @@ public class MailingList {
         return openLists().stream().filter(ml -> ml.email.equals(list)).count() > 0;
     }
 
+    public static MailingList load(String listEmail) {
+        try {
+            var rs = Database.open()
+                    .select(TABLE_NAME)
+                    .where(EMAIL,listEmail)
+                    .exec();
+            if (rs.next()){
+                return new MailingList(rs.getString(EMAIL),
+                        rs.getString(NAME),
+                        rs.getString(IMAP_HOST),
+                        rs.getInt(IMAP_PORT),
+                        rs.getString(IMAP_USER),
+                        rs.getString(IMAP_PASS),
+                        rs.getString(SMTP_HOST),
+                        rs.getInt(SMTP_PORT),
+                        rs.getString(SMTP_USER),
+                        rs.getString(SMTP_PASS),
+                        rs.getInt(STATE));
+            }
+        } catch (SQLException e) {
+            LOG.debug("Failed to load MailingList: ",e);
+        }
+        return null;
+    }
+
     public Map<String, Object> safeMap() {
         var map = new HashMap<String,Object>();
         String[] parts = email.split("@", 2);