Signaling server, WS, login, room creation

server/src/main/java/gltronic/oozik/model/BiMap.java

@@ -0,0 +1,46 @@
+package gltronic.oozik.model;
+
+import java.util.HashMap;
+
+public class BiMap<K, V> {
+  HashMap<K,V> map = new HashMap<K, V>();
+  HashMap<V,K> inversedMap = new HashMap<V, K>();
+
+  public void put(K k, V v) {
+      map.put(k, v);
+      inversedMap.put(v, k);
+  }
+
+  public V get(K k) {
+      return map.get(k);
+  }
+
+  public K getKey(V v) {
+      return inversedMap.get(v);
+  }
+
+  public boolean containsKey(K k) {
+    return map.containsKey(k);
+  }
+
+  public boolean containsValue(V v) {
+    return map.containsValue(v);
+  }
+
+  public int size() {
+    return map.size();
+  }
+
+  public void removeKey(K k) {
+    V v = map.get(k);
+    map.remove(k);
+    inversedMap.remove(v);
+  }
+
+  public void removeValue(V v) {
+    K k = inversedMap.get(v);
+    inversedMap.remove(v);
+    map.remove(k);
+  }
+
+}