Implemented ZUNIONSTORE and ZINTERSTORE

src/main/java/redis/clients/jedis/ZParams.java

@@ -0,0 +1,33 @@
+package redis.clients.jedis;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+public class ZParams {
+    public enum Aggregate {
+	SUM, MIN, MAX
+    }
+
+    private List<String> params = new ArrayList<String>();
+
+    public ZParams weights(int... weights) {
+	params.add("WEIGHTS");
+	for (int weight : weights) {
+	    params.add(String.valueOf(weight));
+	}
+
+	return this;
+    }
+
+    public Collection<String> getParams() {
+	return Collections.unmodifiableCollection(params);
+    }
+
+    public ZParams aggregate(Aggregate aggregate) {
+	params.add("AGGREGATE");
+	params.add(aggregate.name());
+	return this;
+    }
+}