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
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
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
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
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
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
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
# ====================================================================
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
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)
projects / rails.git / commitdiff