Changeset 6610

Timestamp:

02/12/08 23:47:28 (5 years ago)

Author:

kmizu

Message:

 

Files:

• lang/scala/sandbox/src/jp/gr/java_conf/mizu/util/Collections.scala (modified) (1 diff)

lang/scala/sandbox/src/jp/gr/java_conf/mizu/util/Collections.scala

@@ -4 +4 @@
 
 object Collections {
+  class RichIterable[A](iterable : scala.Iterable[A]) {
+    def toJavaList :java.util.List = {
+      val javaList = new java.util.ArrayList
+      for(e <- iterable) javaList.add(e)
+      javaList
+    }
+    def toJavaSet :java.util.Set = {
+      val javaSet = new java.util.HashSet
+      for(e <- iterable) javaSet.add(e)
+      javaSet
+    }
+  }
+
+  class RichMap[A, B](map : scala.collection.Map[A, B]) {
+    def toJavaMap :java.util.Map = {
+      val javaMap = new java.util.HashMap
+      for((k, v) <- map) javaMap.put(k, v)
+      javaMap
+    }
+  }
+
+  implicit def ext2RichIterable[T](iterable : scala.Iterable[T]) = {
+    new RichIterable[T](iterable)
+  }
+
+  implicit def ext2RichMap[A, B](map : scala.collection.Map[A, B]) = {
+    new RichMap(map)
+  }
+
   class JavaList[A](val underlying :java.util.List) extends BufferWrapper[A]
   class JavaMap[A, B](val underlying :java.util.Map) extends MapWrapper[A, B]