a couple of useful MultiMap methods

2026-09-27 10:03:11 +07:00 · 2010-06-15 13:01:07 +04:00
parent 567fab512e
commit 8efb96c866
1 changed files with 16 additions and 0 deletions
@@ -43,6 +43,22 @@ public class MultiMap<K, V> {
    return Collections.emptyList();
  }

+  public void putAllValues(MultiMap<? extends K, ? extends V> from) {
+    for (K k : from.keySet()) {
+      //noinspection unchecked
+      putValues(k, ((MultiMap)from).get(k));
+    }
+  }
+
+  public void putValues(K key, Collection<? extends V> values) {
+    Collection<V> list = myMap.get(key);
+    if (list == null) {
+      list = createCollection();
+      myMap.put(key, list);
+    }
+    list.addAll(values);
+  }
+
  public void putValue(K key, V value) {
    Collection<V> list = myMap.get(key);
    if (list == null) {