From 98174fce761ca305fb5c48267aea079509f1b0a6 Mon Sep 17 00:00:00 2001
From: Masatoshi SEKI <m_seki@mva.biglobe.ne.jp>
Date: Fri, 1 Jul 2011 19:12:02 +0900
Subject: [PATCH] remove tags, next_tag

---
 lib/drip.rb   | 30 ------------------------------
 test/basic.rb | 22 +++-------------------
 2 files changed, 3 insertions(+), 49 deletions(-)

diff --git a/lib/drip.rb b/lib/drip.rb
index 919af89..b169aa1 100644
--- a/lib/drip.rb
+++ b/lib/drip.rb
@@ -121,29 +121,6 @@ def key_to_time(key)
     Time.at(*key.divmod(1000000))
   end
   
-  def next_tag(cur=nil, n=1)
-    return _next_tag(cur) if n == 1
-    ary = []
-    while cur = _next_tag(cur)
-      ary << cur
-      n -= 1
-      break if n <= 0
-    end
-    ary
-  end
-
-  def tags(prefix='')
-    ary = []
-    cur = next_tag(prefix)
-    while cur && cur.index(prefix) == 0
-      str = cur.dup
-      str[prefix] = ''
-      ary << str
-      cur = next_tag(cur + "\0")
-    end
-    ary
-  end
-
   private
   class SimpleStore
     Attic = Struct.new(:fname, :fpos, :value)
@@ -300,13 +277,6 @@ def wait_tag(key, tag, renewer)
     end while key = wait(key, renewer)
   end
 
-  def _next_tag(cur)
-    fwd = cur ? cur + "\0" : ''
-    it ,= @tag.lower_bound([fwd, 0])
-    return nil unless it
-    it[0]
-  end
-
   class Renewer
     def initialize(timeout)
       @at = Time.now + timeout
diff --git a/test/basic.rb b/test/basic.rb
index 46a16d0..34043c2 100644
--- a/test/basic.rb
+++ b/test/basic.rb
@@ -54,33 +54,17 @@ def test_read
     assert_equal(tags, ['tag1', 'tag2'])
   end
 
-  def test_next_tag
-    11.times do |n|
-      value = {"n=#{n}" => 'x' * n, n => n, "n" => n, :symbol => n}
-      @drip.write(value, *value.keys)
-    end
-    assert_equal(@drip.next_tag(), 'n')
-    assert_equal(@drip.next_tag(nil), 'n')
-    assert_equal(@drip.next_tag('n='), 'n=0')
-    assert_equal(@drip.next_tag('n=0'), 'n=1')
-    assert_equal(@drip.next_tag('n=0', 3), ['n=1', 'n=10', 'n=2'])
-    assert_equal(@drip.tags, ["n",
-                              "n=0", "n=1", "n=10", "n=2", "n=3",
-                              "n=4", "n=5", "n=6", "n=7", "n=8", "n=9"])
-    # tags with prefix
-    assert_equal(@drip.tags("n="), %w(0 1 10 2 3 4 5 6 7 8 9))
-  end
-  
   def test_symbol_is_not_tag
     @drip.write({:symbol => :symbol, 'string' => :string}, :symbol, 'string')
-    assert_equal(@drip.tags, ['string'])
+    assert_raise(ArgumentError) {@drip.read_tag(0, :symbol, 1, 0)}
     oid, value = @drip.older(@drip.time_to_key(Time.now))
     assert_equal(value, {:symbol => :symbol, 'string' => :string})
   end
 
   def test_number_is_not_tag
     @drip.write({5 => :five, 'string' => :string}, 5, 'string')
-    assert_equal(@drip.tags, ['string'])
+    assert_equal(@drip.read_tag(0, 'string', 1, 0).size, 1)
+    assert_raise(ArgumentError) {@drip.read_tag(0, 5, 1, 0)}
   end
   
   def test_older_now_is_newest