1 files changed, 61 insertions, 12 deletions
diff --git a/src/main/java/org/traccar/config/ConfigKey.java b/src/main/java/org/traccar/config/ConfigKey.java
index c046a46a5..b8151392c 100644
--- a/src/main/java/org/traccar/config/ConfigKey.java
+++ b/src/main/java/org/traccar/config/ConfigKey.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 - 2020 Anton Tananaev (anton@traccar.org)
+ * Copyright 2019 - 2022 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,30 +15,34 @@
  */
 package org.traccar.config;
 
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
-public class ConfigKey<T> {
+public abstract class ConfigKey<T> {
 
     private final String key;
-    private final List<KeyType> types;
+    private final Set<KeyType> types = new HashSet<>();
+    private final Class<T> valueClass;
     private final T defaultValue;
 
-    ConfigKey(String key, List<KeyType> types) {
-        this(key, types, null);
-    }
-
-    ConfigKey(String key, List<KeyType> types, T defaultValue) {
+    ConfigKey(String key, List<KeyType> types, Class<T> valueClass, T defaultValue) {
         this.key = key;
-        this.types = types;
+        this.types.addAll(types);
+        this.valueClass = valueClass;
         this.defaultValue = defaultValue;
     }
 
-    String getKey() {
+    public String getKey() {
         return key;
     }
 
-    public List<KeyType> getTypes() {
-        return types;
+    public boolean hasType(KeyType type) {
+        return types.contains(type);
+    }
+
+    public Class<T> getValueClass() {
+        return valueClass;
     }
 
     public T getDefaultValue() {
@@ -46,3 +50,48 @@ public class ConfigKey<T> {
     }
 
 }
+
+class StringConfigKey extends ConfigKey<String> {
+    StringConfigKey(String key, List<KeyType> types) {
+        super(key, types, String.class, null);
+    }
+    StringConfigKey(String key, List<KeyType> types, String defaultValue) {
+        super(key, types, String.class, defaultValue);
+    }
+}
+
+class BooleanConfigKey extends ConfigKey<Boolean> {
+    BooleanConfigKey(String key, List<KeyType> types) {
+        super(key, types, Boolean.class, null);
+    }
+    BooleanConfigKey(String key, List<KeyType> types, Boolean defaultValue) {
+        super(key, types, Boolean.class, defaultValue);
+    }
+}
+
+class IntegerConfigKey extends ConfigKey<Integer> {
+    IntegerConfigKey(String key, List<KeyType> types) {
+        super(key, types, Integer.class, null);
+    }
+    IntegerConfigKey(String key, List<KeyType> types, Integer defaultValue) {
+        super(key, types, Integer.class, defaultValue);
+    }
+}
+
+class LongConfigKey extends ConfigKey<Long> {
+    LongConfigKey(String key, List<KeyType> types) {
+        super(key, types, Long.class, null);
+    }
+    LongConfigKey(String key, List<KeyType> types, Long defaultValue) {
+        super(key, types, Long.class, defaultValue);
+    }
+}
+
+class DoubleConfigKey extends ConfigKey<Double> {
+    DoubleConfigKey(String key, List<KeyType> types) {
+        super(key, types, Double.class, null);
+    }
+    DoubleConfigKey(String key, List<KeyType> types, Double defaultValue) {
+        super(key, types, Double.class, defaultValue);
+    }
+}