From 048f7fca8c985a8c9c138d8fc0041db5231b0fc0 Mon Sep 17 00:00:00 2001 From: Richard Fairhurst Date: Mon, 28 May 2007 19:06:42 +0000 Subject: [PATCH] no longer deletes nodes used in other segments ('H' test case) --- app/controllers/amf_controller.rb | 158 ++++++++++++++++-------------- 1 file changed, 84 insertions(+), 74 deletions(-) diff --git a/app/controllers/amf_controller.rb b/app/controllers/amf_controller.rb index a4a85c934..541926c74 100644 --- a/app/controllers/amf_controller.rb +++ b/app/controllers/amf_controller.rb @@ -195,8 +195,8 @@ EOF end # ----- getway (objectname, way, baselong, basey, masterscale) - # returns objectname, array of co-ordinates, attributes, - # xmin,xmax,ymin,ymax + # returns objectname, array of co-ordinates, attributes, + # xmin,xmax,ymin,ymax def getway(args) objname,wayid,baselong,basey,masterscale=args @@ -235,6 +235,7 @@ EOF uid=getuserid(usertoken) return if !uid db_uqs='uniq'+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquesegments table name, typically 51 chars + db_uqn='unin'+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars db_now='@now'+uid.to_s+originalway.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()") originalway=originalway.to_i @@ -278,7 +279,7 @@ EOF if node<0 # new node - create newnode=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes ( latitude,longitude,timestamp,user_id,visible,tags) VALUES ( #{ys},#{xs},#{db_now},#{uid},1,#{tagsql})") - ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags) VALUES (#{newnode},#{ys},#{xs},#{db_now},#{uid},1,#{tagsql})") + ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags) VALUES (#{newnode},#{ys},#{xs},#{db_now},#{uid},1,#{tagsql})") points[i][2]=newnode renumberednodes[node.to_s]=newnode.to_s @@ -317,7 +318,7 @@ EOF end end segid=ActiveRecord::Base.connection.insert("INSERT INTO current_segments ( node_a,node_b,timestamp,user_id,visible,tags) VALUES ( #{from},#{to},#{db_now},#{uid},1,'')") - ActiveRecord::Base.connection.insert("INSERT INTO segments (id,node_a,node_b,timestamp,user_id,visible,tags) VALUES (#{segid},#{from},#{to},#{db_now},#{uid},1,'')") + ActiveRecord::Base.connection.insert("INSERT INTO segments (id,node_a,node_b,timestamp,user_id,visible,tags) VALUES (#{segid},#{from},#{to},#{db_now},#{uid},1,'')") points[i+1][5]=segid numberedsegments[(i+1).to_s]=segid.to_s end @@ -332,38 +333,6 @@ EOF createuniquesegments(way,db_uqs) - # a='' - # ActiveRecord::Base.connection.select_values("SELECT segment_id FROM #{db_uqs}").each {|b| a+=b+',' } - # RAILS_DEFAULT_LOGGER.error("Unique segments are #{a}") - # a=ActiveRecord::Base.connection.select_value("SELECT #{db_now}") - # RAILS_DEFAULT_LOGGER.error("Timestamp of this edit is #{a}") - # RAILS_DEFAULT_LOGGER.error("Userid of this edit is #{uid}") - - # delete nodes from uniquesegments (and not in modified way) - - sql=<<-EOF - INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible) - SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0 - FROM current_nodes AS cn, - current_segments AS cs, - #{db_uqs} AS us - WHERE(cn.id=cs.node_a OR cn.id=cs.node_b) - AND cs.id=us.segment_id AND cs.visible=1 - AND (cn.timestamp!=#{db_now} OR cn.user_id!=#{uid}) - EOF - ActiveRecord::Base.connection.insert(sql) - - sql=<<-EOF - UPDATE current_nodes AS cn, - current_segments AS cs, - #{db_uqs} AS us - SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid} - WHERE (cn.id=cs.node_a OR cn.id=cs.node_b) - AND cs.id=us.segment_id AND cs.visible=1 - AND (cn.timestamp!=#{db_now} OR cn.user_id!=#{uid}) - EOF - ActiveRecord::Base.connection.update(sql) - # delete segments from uniquesegments (and not in modified way) sql=<<-EOF @@ -382,7 +351,28 @@ EOF AND (cs.timestamp!=#{db_now} OR cs.user_id!=#{uid}) EOF ActiveRecord::Base.connection.update(sql) + + # delete nodes not in modified way or any other segments + + createuniquenodes(db_uqs,db_uqn) + + sql=<<-EOF + INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible) + SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0 + FROM current_nodes AS cn,#{db_uqn} + WHERE cn.id=node_id + EOF + ActiveRecord::Base.connection.insert(sql) + + sql=<<-EOF + UPDATE current_nodes AS cn, #{db_uqn} + SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid} + WHERE cn.id=node_id + EOF + ActiveRecord::Base.connection.update(sql) + ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqs}") + ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqn}") # insert new version of route into way_segments @@ -428,60 +418,61 @@ EOF def deleteway(args) usertoken,way=args uid=getuserid(usertoken); if !uid then return end - way=way.to_i - - db_uqs='uniq'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquesegments table name, typically 51 chars - db_now='@now'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars - ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()") - createuniquesegments(way,db_uqs) - - sql=<<-EOF - INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible) - SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0 - FROM current_nodes AS cn, - current_segments AS cs, - #{db_uqs} AS us - WHERE (cn.id=cs.node_a OR cn.id=cs.node_b) - AND cs.id=us.segment_id - EOF - ActiveRecord::Base.connection.insert(sql) + way=way.to_i - sql=<<-EOF - UPDATE current_nodes AS cn, - current_segments AS cs, - #{db_uqs} AS us - SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid} - WHERE (cn.id=cs.node_a OR cn.id=cs.node_b) - AND cs.id=us.segment_id - EOF - ActiveRecord::Base.connection.update(sql) + db_uqs='uniq'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquesegments table name, typically 51 chars + db_uqn='unin'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars + db_now='@now'+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars + ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()") + createuniquesegments(way,db_uqs) - # - delete any otherwise unused segments + # - delete any otherwise unused segments - sql=<<-EOF + sql=<<-EOF INSERT INTO segments (id,node_a,node_b,timestamp,user_id,visible) SELECT DISTINCT segment_id,node_a,node_b,#{db_now},#{uid},0 FROM current_segments AS cs, #{db_uqs} AS us WHERE cs.id=us.segment_id EOF - ActiveRecord::Base.connection.insert(sql) + ActiveRecord::Base.connection.insert(sql) - sql=<<-EOF + sql=<<-EOF UPDATE current_segments AS cs, #{db_uqs} AS us SET cs.timestamp=#{db_now},cs.visible=0,cs.user_id=#{uid} WHERE cs.id=us.segment_id EOF - ActiveRecord::Base.connection.update(sql) - ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqs}") + ActiveRecord::Base.connection.update(sql) - # - delete way + # - delete any unused nodes + + createuniquenodes(db_uqs,db_uqn) - ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},0)") - ActiveRecord::Base.connection.update("UPDATE current_ways SET user_id=#{uid},timestamp=#{db_now},visible=0 WHERE id=#{way}") - ActiveRecord::Base.connection.execute("DELETE FROM current_way_segments WHERE id=#{way}") - ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}") + sql=<<-EOF + INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible) + SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0 + FROM current_nodes AS cn,#{db_uqn} + WHERE cn.id=node_id + EOF + ActiveRecord::Base.connection.insert(sql) - way + sql=<<-EOF + UPDATE current_nodes AS cn, #{db_uqn} + SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid} + WHERE cn.id=node_id + EOF + ActiveRecord::Base.connection.update(sql) + + ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqs}") + ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqn}") + + # - delete way + + ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},0)") + ActiveRecord::Base.connection.update("UPDATE current_ways SET user_id=#{uid},timestamp=#{db_now},visible=0 WHERE id=#{way}") + ActiveRecord::Base.connection.execute("DELETE FROM current_way_segments WHERE id=#{way}") + ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}") + + way end # ==================================================================== @@ -498,6 +489,7 @@ def readwayquery(id) end def createuniquesegments(way,uqs_name) + # Finds segments which appear in this way and no other sql=<<-EOF CREATE TEMPORARY TABLE #{uqs_name} SELECT a.segment_id @@ -511,6 +503,24 @@ def createuniquesegments(way,uqs_name) ActiveRecord::Base.connection.execute(sql) end +def createuniquenodes(uqs_name,uqn_name) + # Finds nodes which appear in uniquesegments but no other segments + sql=<<-EOF + CREATE TEMPORARY TABLE #{uqn_name} + SELECT DISTINCT node_id + FROM (SELECT cn.id AS node_id + FROM current_nodes AS cn, + current_segments AS cs, + #{uqs_name} AS us + WHERE cs.id=us.segment_id + AND (cn.id=cs.node_a OR cn.id=cs.node_b)) AS n + LEFT JOIN current_segments AS cs2 ON node_id=cs2.node_a AND cs2.visible=1 + LEFT JOIN current_segments AS cs3 ON node_id=cs3.node_b AND cs3.visible=1 + WHERE cs2.node_a IS NULL + AND cs3.node_b IS NULL + EOF + ActiveRecord::Base.connection.execute(sql) +end def sqlescape(a) a.gsub("'","''").gsub(92.chr,92.chr+92.chr) -- 2.39.5