From 497218d5db8f7c3887c3861bdbe318331b77fed7 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Tue, 12 Oct 2010 13:57:05 -0700
Subject: [PATCH] adding bind value substitution

---
 .../connection_adapters/abstract_adapter.rb              | 6 ++++++
 .../test/cases/adapters/sqlite3/sqlite3_adapter_test.rb  | 9 +++++++++
 2 files changed, 15 insertions(+)

diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
index d8c92d0ad3..bcbef526bd 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
@@ -97,6 +97,12 @@ def quote_table_name(name)
         quote_column_name(name)
       end
 
+      # Returns a bind substitution value given a +column+ and list of current
+      # +bind_values+
+      def substitute_for(column, bind_values)
+        Arel.sql '?'
+      end
+
       # REFERENTIAL INTEGRITY ====================================
 
       # Override to turn off referential integrity while executing <tt>&block</tt>.
diff --git a/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb b/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb
index 934cf72f72..f4a856e42a 100644
--- a/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb
+++ b/activerecord/test/cases/adapters/sqlite3/sqlite3_adapter_test.rb
@@ -51,6 +51,15 @@ def test_encoding
                                        :timeout => 100
         assert_equal 'UTF-8', conn.encoding
       end
+
+      def test_bind_value_substitute
+        conn = Base.sqlite3_connection :database => ':memory:',
+                                       :adapter => 'sqlite3',
+                                       :timeout => 100
+
+        bind_param = conn.substitute_for('foo', [])
+        assert_equal Arel.sql('?'), bind_param
+      end
     end
   end
 end
-- 
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