From 216e7695a70c21335498106a86348ba523fa74e9 Mon Sep 17 00:00:00 2001
From: Todd Gruben <tgruben@umbel.com>
Date: Tue, 29 Jul 2014 17:54:05 +0000
Subject: [PATCH] added mask function for testing

---
 index/commands.go           | 17 +++++++++++++++++
 index/fragment_container.go | 11 +++++++++++
 2 files changed, 28 insertions(+)

diff --git a/index/commands.go b/index/commands.go
index cfc2be479..71f6a1ede 100644
--- a/index/commands.go
+++ b/index/commands.go
@@ -274,3 +274,20 @@ func NewRange(bitmap_id uint64, start, end time.Time) *CmdRange {
 func (self *CmdRange) Execute(f *Fragment) Calculation {
 	return f.build_time_range_bitmap(self.bitmap_id, self.start_time, self.end_time)
 }
+
+type CmdMask struct {
+	*Responder
+	start, end uint64
+}
+
+func NewMask(start, end uint64) *CmdMask {
+	return &CmdMask{NewResponder("Mask"), start, end}
+}
+
+func (self *CmdMask) Execute(f *Fragment) Calculation {
+	result := NewBitmap()
+	for i := self.start; i < self.end; i++ {
+		SetBit(result, i)
+	}
+	return f.AllocHandle(result)
+}
diff --git a/index/fragment_container.go b/index/fragment_container.go
index ef1a98022..a61f1a549 100644
--- a/index/fragment_container.go
+++ b/index/fragment_container.go
@@ -137,6 +137,17 @@ func (self *FragmentContainer) Get(frag_id util.SUUID, bitmap_id uint64) (Bitmap
 	return 0, errors.New("Invalid Bitmap Handle")
 }
 
+func (self *FragmentContainer) Mask(frag_id util.SUUID, start, end uint64) (BitmapHandle, error) {
+	if fragment, found := self.GetFragment(frag_id); found {
+		request := NewMask(start, end)
+		fragment.requestChan <- request
+		result := request.Response()
+		util.SendTimer("fragmant_container_Mask", result.exec_time.Nanoseconds())
+		return result.answer.(BitmapHandle), nil
+	}
+	return 0, errors.New("Invalid Bitmap Handle")
+}
+
 func (self *FragmentContainer) Range(frag_id util.SUUID, bitmap_id uint64, start, end time.Time) (BitmapHandle, error) {
 	if fragment, found := self.GetFragment(frag_id); found {
 		request := NewRange(bitmap_id, start, end)