use granularity constants consistently

Author: barmintor

lib/oai/harvester.rb

@@ -9,6 +9,10 @@
 require 'readline'
 require 'socket'
 
+if not defined?(OAI::Const::VERBS)
+  require 'oai/constants'
+end
+
 require 'oai/client'
 require 'oai/harvester/config'
 require 'oai/harvester/harvest'

lib/oai/harvester/config.rb

@@ -5,7 +5,7 @@
 module OAI
   module Harvester
 
-    LOW_RESOLUTION = "YYYY-MM-DD"
+    LOW_RESOLUTION = OAI::Const::Granularity::LOW
 
     class Config < OpenStruct
 

lib/oai/harvester/harvest.rb

@@ -38,7 +38,7 @@ def harvest(site)
           harvest_time = Time.now.utc
         end
 
-        if "YYYY-MM-DD" == granularity(opts[:url])
+        if OAI::Const::Granularity::LOW == granularity(opts[:url])
           opts[:until] = harvest_time.strftime("%Y-%m-%d")
           opts[:from] = @from.strftime("%Y-%m-%d") if @from
         else
@@ -139,7 +139,7 @@ def filename(from_time, until_time)
         "#{from_time.strftime(format)}_til_#{until_time.strftime(format)}"\
         "_at_#{until_time.strftime('%H-%M-%S')}"
       end
-    
+
       def granularity(url)
         client = OAI::Client.new url
         client.identify.granularity
@@ -149,7 +149,7 @@ def granularity(url)
       def earliest(url)
         client = OAI::Client.new url
         identify = client.identify
-        if "YYYY-MM-DD" == identify.granularity
+        if OAI::Const::Granularity::LOW == identify.granularity
           Time.parse(identify.earliest_datestamp).strftime("%Y-%m-%d")
         else
           Time.parse(identify.earliest_datestamp).xmlschema