added post migration

db/migrate/20100204214746_create_posts.rb

@@ -0,0 +1,96 @@
+class CreatePosts < ActiveRecord::Migration
+  def self.up
+    create_table :posts do |t|
+      t.timestamps
+      
+      t.column :score, :integer, :null => false, :default => 0
+      t.column :source, :string
+      t.column :md5, :string, :null => false
+      t.column :rating, :character, :null => false, :default => 'q'
+      t.column :is_note_locked, :boolean, :null => false, :default => false
+      t.column :is_rating_locked, :boolean, :null => false, :default => false
+      t.column :is_pending, :boolean, :null => false, :default => false
+      t.column :is_flagged, :boolean, :null => false, :default => false
+      t.column :approver_id, :integer
+      t.column :change_seq, :integer, :default => "nextval('post_change_seq'::regclass)"
+
+      # Uploader
+      t.column :uploader_id, :integer, :null => false
+      t.column :uploader_ip_addr, "inet", :null => false
+
+      # Cached
+      t.column :last_noted_at, :datetime
+      t.column :last_commented_at, :datetime
+
+      # Tags
+      t.column :tag_string, :text, :null => false
+      t.column :tag_index, "tsvector"
+      t.column :tag_count, :integer, :null => false, :default => 0
+      t.column :tag_count_general, :integer, :null => false, :default => 0
+      t.column :tag_count_artist, :integer, :null => false, :default => 0
+      t.column :tag_count_character, :integer, :null => false, :default => 0
+      t.column :tag_count_copyright, :integer, :null => false, :default => 0
+
+      # File
+      t.column :file_ext, :string, :null => false
+      t.column :image_width, :integer, :null => false
+      t.column :image_height, :integer, :null => false
+      t.column :file_size, :integer, :null => false
+    end
+    
+    add_index :posts, :md5, :unique => true
+    add_index :posts, :created_at
+    add_index :posts, :last_commented_at
+    add_index :posts, :last_noted_at
+    add_index :posts, :uploader_id
+    add_index :posts, :approver_id
+    add_index :posts, :change_seq
+    add_index :posts, :file_size
+    add_index :posts, :image_width
+    add_index :posts, :image_height
+    add_index :posts, :source
+    
+    execute "CREATE INDEX index_posts_on_mpixels ON posts (((image_width * image_height)::numeric / 1000000.0))"
+
+    execute "SET statement_timeout = 0"
+    execute "SET search_path = public"
+
+    execute "CREATE OR REPLACE FUNCTION testprs_start(internal, int4)
+    RETURNS internal
+    AS '$libdir/test_parser'
+    LANGUAGE C STRICT"
+
+    execute "CREATE OR REPLACE FUNCTION testprs_getlexeme(internal, internal, internal)
+    RETURNS internal
+    AS '$libdir/test_parser'
+    LANGUAGE C STRICT"
+
+    execute "CREATE OR REPLACE FUNCTION testprs_end(internal)
+    RETURNS void
+    AS '$libdir/test_parser'
+    LANGUAGE C STRICT"
+
+    execute "CREATE OR REPLACE FUNCTION testprs_lextype(internal)
+    RETURNS internal
+    AS '$libdir/test_parser'
+    LANGUAGE C STRICT"
+
+    execute "CREATE TEXT SEARCH PARSER testparser (
+        START    = testprs_start,
+        GETTOKEN = testprs_getlexeme,
+        END      = testprs_end,
+        HEADLINE = pg_catalog.prsd_headline,
+        LEXTYPES = testprs_lextype
+    )"
+    
+    execute "CREATE INDEX index_posts_on_tags_index ON posts USING gin (tag_index)"
+    execute "CREATE TEXT SEARCH CONFIGURATION public.danbooru (PARSER = public.testparser)"
+    execute "ALTER TEXT SEARCH CONFIGURATION public.danbooru ADD MAPPING FOR WORD WITH SIMPLE"
+    execute "SET default_text_search_config = 'public.danbooru'"
+    execute "CREATE TRIGGER trigger_posts_on_tag_index_update BEFORE INSERT OR UPDATE ON posts FOR EACH ROW EXECUTE PROCEDURE tsvector_update_trigger('tag_index', 'public.danbooru', 'tag_string')"
+  end
+
+  def self.down
+    drop_table :posts
+  end
+end