X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/df31fe13a535a9b36206c035a48f1e4cdec913f4..4a5fb3b46ec8f043e52e9cdd2db7d86df0d03c82:/app/controllers/amf_controller.rb diff --git a/app/controllers/amf_controller.rb b/app/controllers/amf_controller.rb index 3cb93c1ae..83a6cd4b5 100644 --- a/app/controllers/amf_controller.rb +++ b/app/controllers/amf_controller.rb @@ -1,50 +1,74 @@ +# AMF Controller is a semi-standalone API for Flash clients, particularly Potlatch. +# All interaction between Potlatch (as a .SWF application) and the +# OSM database takes place using this controller. Messages are +# encoded in the Actionscript Message Format (AMF). +# +# See Also Potlatch::Potlatch and Potlatch::AMF +# +# Public domain. +# editions Systeme D / Richard Fairhurst 2004-2008 +# +# All in/out parameters are floats unless explicitly stated. +# +# to trap errors (getway_old,putway,putpoi,deleteway only): +# return(-1,"message") <-- just puts up a dialogue +# return(-2,"message") <-- also asks the user to e-mail me +# to log: +# RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}") class AmfController < ApplicationController require 'stringio' + include Potlatch + session :off before_filter :check_write_availability - # to log: - # RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}") - - # ==================================================================== - # Main AMF handler - - # ---- talk process AMF request - + # Main AMF handler. Tha talk method takes in AMF, figures out what to do and dispatched to the appropriate private method def talk - req=StringIO.new(request.raw_post) # Get POST data as request - req.read(2) # Skip version indicator and client ID - results={} # Results of each body + req=StringIO.new(request.raw_post+0.chr) # Get POST data as request + # (cf http://www.ruby-forum.com/topic/122163) + req.read(2) # Skip version indicator and client ID + results={} # Results of each body + renumberednodes={} # Shared across repeated putways + renumberedways={} # Shared across repeated putways # ------------- # Parse request - headers=getint(req) # Read number of headers + headers=AMF.getint(req) # Read number of headers headers.times do # Read each header - name=getstring(req) # | + name=AMF.getstring(req) # | req.getc # | skip boolean - value=getvalue(req) # | + value=AMF.getvalue(req) # | header["name"]=value # | end - bodies=getint(req) # Read number of bodies + bodies=AMF.getint(req) # Read number of bodies bodies.times do # Read each body - message=getstring(req) # | get message name - index=getstring(req) # | get index in response sequence - bytes=getlong(req) # | get total size in bytes - args=getvalue(req) # | get response (probably an array) + message=AMF.getstring(req) # | get message name + index=AMF.getstring(req) # | get index in response sequence + bytes=AMF.getlong(req) # | get total size in bytes + args=AMF.getvalue(req) # | get response (probably an array) case message - when 'getpresets'; results[index]=putdata(index,getpresets) - when 'whichways'; results[index]=putdata(index,whichways(args)) - when 'getway'; results[index]=putdata(index,getway(args)) - when 'putway'; results[index]=putdata(index,putway(args)) - when 'deleteway'; results[index]=putdata(index,deleteway(args)) - when 'makeway'; results[index]=putdata(index,makeway(args)) - when 'putpoi'; results[index]=putdata(index,putpoi(args)) - when 'getpoi'; results[index]=putdata(index,getpoi(args)) + when 'getpresets'; results[index]=AMF.putdata(index,getpresets) + when 'whichways'; results[index]=AMF.putdata(index,whichways(args)) + when 'whichways_deleted'; results[index]=AMF.putdata(index,whichways_deleted(args)) + when 'getway'; results[index]=AMF.putdata(index,getway(args)) + when 'getrelation'; results[index]=AMF.putdata(index,getrelation(args)) + when 'getway_old'; results[index]=AMF.putdata(index,getway_old(args)) + when 'getway_history'; results[index]=AMF.putdata(index,getway_history(args)) + when 'putway'; r=putway(args,renumberednodes) + renumberednodes=r[3] + if r[1] != r[2] + renumberedways[r[1]] = r[2] + end + results[index]=AMF.putdata(index,r) + when 'putrelation'; results[index]=AMF.putdata(index,putrelation(args, renumberednodes, renumberedways)) + when 'deleteway'; results[index]=AMF.putdata(index,deleteway(args)) + when 'putpoi'; results[index]=AMF.putdata(index,putpoi(args)) + when 'getpoi'; results[index]=AMF.putdata(index,getpoi(args)) end end @@ -53,164 +77,33 @@ class AmfController < ApplicationController RAILS_DEFAULT_LOGGER.info(" Response: start") a,b=results.length.divmod(256) - render :content_type => "application/x-amf", :text => proc { |response, output| - output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr - results.each do |k,v| - output.write(v) - end - } + render :content_type => "application/x-amf", :text => proc { |response, output| + output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr + results.each do |k,v| + output.write(v) + end + } RAILS_DEFAULT_LOGGER.info(" Response: end") - end private - # ==================================================================== - # Remote calls - - # ----- getpresets - # return presets,presetmenus and presetnames arrays - - def getpresets - presets={} - presetmenus={}; presetmenus['point']=[]; presetmenus['way']=[]; presetmenus['POI']=[] - presetnames={}; presetnames['point']={}; presetnames['way']={}; presetnames['POI']={} - presettype='' - presetcategory='' - - RAILS_DEFAULT_LOGGER.info(" Message: getpresets") - - # File.open("config/potlatch/presets.txt") do |file| - - # Temporary patch to get around filepath problem - # To remove this patch and make the code nice again: - # 1. uncomment above line - # 2. fix the path in the above line - # 3. delete this here document, and the following line (StringIO....) - - txt=<<-EOF -way/road -motorway: highway=motorway,ref=(type road number) -trunk road: highway=trunk,ref=(type road number),name=(type road name) -primary road: highway=primary,ref=(type road number),name=(type road name) -secondary road: highway=secondary,ref=(type road number),name=(type road name) -residential road: highway=residential,name=(type road name) -unclassified road: highway=unclassified,name=(type road name) - -way/footway -footpath: highway=footway,foot=yes -bridleway: highway=bridleway,foot=yes -byway: highway=unsurfaced,foot=yes -permissive path: highway=footway,foot=permissive - -way/cycleway -cycle lane: highway=cycleway,cycleway=lane,ncn_ref= -cycle track: highway=cycleway,cycleway=track,ncn_ref= -cycle lane (NCN): highway=cycleway,cycleway=lane,name=(type name here),ncn_ref=(type route number) -cycle track (NCN): highway=cycleway,cycleway=track,name=(type name here),ncn_ref=(type route number) - -way/waterway -canal: waterway=canal,name=(type name here) -navigable river: waterway=river,boat=yes,name=(type name here) -navigable drain: waterway=drain,boat=yes,name=(type name here) -derelict canal: waterway=derelict_canal,name=(type name here) -unnavigable river: waterway=river,boat=no,name=(type name here) -unnavigable drain: waterway=drain,boat=no,name=(type name here) - -way/railway -railway: railway=rail -tramway: railway=tram -light railway: railway=light_rail -preserved railway: railway=preserved -disused railway tracks: railway=disused -course of old railway: railway=abandoned - -way/natural -lake: landuse=water -forest: landuse=forest - -point/road -mini roundabout: highway=mini_roundabout -traffic lights: highway=traffic_signals - -point/footway -bridge: highway=bridge -gate: highway=gate -stile: highway=stile -cattle grid: highway=cattle_grid - -point/cycleway -gate: highway=gate - -point/waterway -lock gate: waterway=lock_gate -weir: waterway=weir -aqueduct: waterway=aqueduct -winding hole: waterway=turning_point -mooring: waterway=mooring - -point/railway -station: railway=station -viaduct: railway=viaduct -level crossing: railway=crossing - -point/natural -peak: point=peak - -POI/road -car park: amenity=parking -petrol station: amenity=fuel - -POI/cycleway -bike park: amenity=bicycle_parking - -POI/place -city: place=city,name=(type name here),is_in=(type region or county) -town: place=town,name=(type name here),is_in=(type region or county) -suburb: place=suburb,name=(type name here),is_in=(type region or county) -village: place=village,name=(type name here),is_in=(type region or county) -hamlet: place=hamlet,name=(type name here),is_in=(type region or county) - -POI/tourism -attraction: tourism=attraction,amenity=,religion=,denomination= -church: tourism=,amenity=place_of_worship,name=(type name here),religion=christian,denomination=(type denomination here) -hotel: tourism=hotel,amenity=,religion=,denomination= -other religious: tourism=,amenity=place_of_worship,name=(type name here),religion=(type religion),denomination= -post box: amenity=post_box,tourism=,name=,religion=,denomination= -post office: amenity=post_office,tourism=,name=,religion=,denomination= -pub: tourism=,amenity=pub,name=(type name here),religion=,denomination= - -POI/natural -peak: point=peak -EOF - - StringIO.open(txt) do |file| - file.each_line {|line| - t=line.chomp - if (t=~/(\w+)\/(\w+)/) then - presettype=$1 - presetcategory=$2 - presetmenus[presettype].push(presetcategory) - presetnames[presettype][presetcategory]=["(no preset)"] - elsif (t=~/^(.+):\s?(.+)$/) then - pre=$1; kv=$2 - presetnames[presettype][presetcategory].push(pre) - presets[pre]={} - kv.split(',').each {|a| - if (a=~/^(.+)=(.*)$/) then presets[pre][$1]=$2 end - } - end - } - end - return [presets,presetmenus,presetnames] + # Return presets (default tags and crap) to potlatch. + # Uses POTLATCH_PRESETS global, set up in OSM::Potlatch + def getpresets #:doc: + return POTLATCH_PRESETS end - # ----- whichways(left,bottom,right,top) - # return array of ways in current bounding box - # at present, instead of using correct (=more complex) SQL to find - # corner-crossing ways, it simply enlarges the bounding box by +/- 0.01 - - def whichways(args) + # ----- whichways + # Find all the way ids and nodes (including tags and projected lat/lng) which aren't part of those ways in an are + # + # The argument is an array containing the following, in order: + # 0. minimum longitude + # 1. minimum latitude + # 2. maximum longitude + # 3. maximum latitude + # 4. baselong, 5. basey, 6. masterscale as above + def whichways(args) #:doc: xmin = args[0].to_f-0.01 ymin = args[1].to_f-0.01 xmax = args[2].to_f+0.01 @@ -221,89 +114,291 @@ EOF RAILS_DEFAULT_LOGGER.info(" Message: whichways, bbox=#{xmin},#{ymin},#{xmax},#{ymax}") - waylist = WaySegment.find_by_sql("SELECT DISTINCT current_way_segments.id AS wayid"+ - " FROM current_way_segments,current_segments,current_nodes,current_ways "+ - " WHERE segment_id=current_segments.id "+ - " AND current_segments.visible=1 "+ - " AND node_a=current_nodes.id "+ - " AND current_ways.id=current_way_segments.id "+ - " AND current_ways.visible=1 "+ - " AND "+OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")) - - ways = waylist.collect {|a| a.wayid.to_i } # get an array of way id's + # find the way ids in an area + nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => "current_nodes.visible = 1", :include => :ways) + way_ids = nodes_in_area.collect { |node| node.way_ids }.flatten.uniq - pointlist = ActiveRecord::Base.connection.select_all("SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lng,current_nodes.tags "+ - " FROM current_nodes "+ - " LEFT OUTER JOIN current_segments cs1 ON cs1.node_a=current_nodes.id "+ - " LEFT OUTER JOIN current_segments cs2 ON cs2.node_b=current_nodes.id "+ - " WHERE "+OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")+ - " AND cs1.id IS NULL AND cs2.id IS NULL "+ - " AND current_nodes.visible=1") + # find the node ids in an area that aren't part of ways + nodes_not_used_in_area = nodes_in_area.select { |node| node.ways.empty? } + points = nodes_not_used_in_area.collect { |n| [n.id, n.lon_potlatch(baselong,masterscale), n.lat_potlatch(basey,masterscale), n.tags_as_hash] } - points = pointlist.collect {|a| [a['id'],long2coord(a['lng'].to_f,baselong,masterscale),lat2coord(a['lat'].to_f,basey,masterscale),tag2array(a['tags'])] } # get a list of node ids and their tags + # find the relations used by those nodes and ways + relation_ids = Relation.find_for_nodes_and_ways(nodes_in_area.collect {|n| n.id}, way_ids).collect {|n| n.id}.uniq - return [ways,points] + [way_ids,points,relation_ids] end - # ----- getway (objectname, way, baselong, basey, masterscale) - # returns objectname, array of co-ordinates, attributes, - # xmin,xmax,ymin,ymax + # ----- whichways_deleted + # return array of deleted ways in current bounding box + # in: as whichways + # does: finds all deleted ways with a deleted node in bounding box + # out: [0] array of way ids + def whichways_deleted(args) #:doc: + xmin = args[0].to_f-0.01 + ymin = args[1].to_f-0.01 + xmax = args[2].to_f+0.01 + ymax = args[3].to_f+0.01 + baselong = args[4] + basey = args[5] + masterscale = args[6] + + sql=<<-EOF + SELECT DISTINCT current_ways.id + FROM current_nodes,way_nodes,current_ways + WHERE #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")} + AND way_nodes.node_id=current_nodes.id + AND way_nodes.id=current_ways.id + AND current_nodes.visible=0 + AND current_ways.visible=0 + EOF + waylist = ActiveRecord::Base.connection.select_all(sql) + ways = waylist.collect {|a| a['id'].to_i } + [ways] + end - def getway(args) - objname,wayid,baselong,basey,masterscale=args + # ----- getway + # Get a way with all of it's nodes and tags + # The input is an array with the following components, in order: + # 0. wayid - the ID of the way to get + # 1. baselong - origin of SWF map (longitude) + # 2. basey - origin of SWF map (latitude) + # 3. masterscale - SWF map scale + # + # The output is an array which contains all the nodes (with projected + # latitude and longitude) and tags for a way (and all the nodes tags). + # It also has the way's unprojected (WGS84) bbox. + # + # FIXME: The server really shouldn't be figuring out a ways bounding box and doing projection for potlatch + # FIXME: the argument splitting should be done in the 'talk' method, not here + def getway(args) #:doc: + wayid,baselong,basey,masterscale = args wayid = wayid.to_i - points = [] - lastid = -1 - xmin = ymin = 999999 - xmax = ymax = -999999 RAILS_DEFAULT_LOGGER.info(" Message: getway, id=#{wayid}") - readwayquery(wayid).each {|row| - xs1=long2coord(row['long1'].to_f,baselong,masterscale); ys1=lat2coord(row['lat1'].to_f,basey,masterscale) - xs2=long2coord(row['long2'].to_f,baselong,masterscale); ys2=lat2coord(row['lat2'].to_f,basey,masterscale) - points << [xs1,ys1,row['id1'].to_i,0,tag2array(row['tags1']),0] if (row['id1'].to_i!=lastid) - lastid = row['id2'].to_i - points << [xs2,ys2,row['id2'].to_i,1,tag2array(row['tags2']),row['segment_id'].to_i] - xmin = [xmin,row['long1'].to_f,row['long2'].to_f].min - xmax = [xmax,row['long1'].to_f,row['long2'].to_f].max - ymin = [ymin,row['lat1'].to_f,row['lat2'].to_f].min - ymax = [ymax,row['lat1'].to_f,row['lat2'].to_f].max + # Ideally we would do ":include => :nodes" here but if we do that + # then rails only seems to return the first copy of a node when a + # way includes a node more than once + way = Way.find(wayid) + + long_array = [] + lat_array = [] + points = [] + + way.nodes.each do |node| + projected_longitude = node.lon_potlatch(baselong,masterscale) # do projection for potlatch + projected_latitude = node.lat_potlatch(basey,masterscale) + id = node.id + tags_hash = node.tags_as_hash + + points << [projected_longitude, projected_latitude, id, nil, tags_hash] + long_array << projected_longitude + lat_array << projected_latitude + end + + [wayid,points,way.tags,long_array.min,long_array.max,lat_array.min,lat_array.max] + end + + # ----- getway_old + # returns old version of way + # in: [0] way id, + # [1] way version to get (or -1 for "last deleted version") + # [2] baselong, [3] basey, [4] masterscale + # does: gets old version of way and all constituent nodes + # for undelete, always uses the most recent version of each node + # (even if it's moved) + # for revert, uses the historic version of each node, but if that node is + # still visible and has been changed since, generates a new node id + # out: [0] 0 (code for success), [1] SWF object name, + # [2] array of points (as getway _except_ [3] is node.visible?, 0 or 1), + # [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox), + # [8] way version + def getway_old(args) #:doc: + RAILS_DEFAULT_LOGGER.info(" Message: getway_old (server is #{SERVER_URL})") + # if SERVER_URL=="www.openstreetmap.org" then return -1,"Revert is not currently enabled on the OpenStreetMap server." end + + wayid,version,baselong,basey,masterscale=args + wayid = wayid.to_i + version = version.to_i + xmin = ymin = 999999 + xmax = ymax = -999999 + points=[] + if version<0 + historic=false + version=getlastversion(wayid,version) + else + historic=true + end + readwayquery_old(wayid,version,historic).each { |row| + points<<[long2coord(row['longitude'].to_f,baselong,masterscale),lat2coord(row['latitude'].to_f,basey,masterscale),row['id'].to_i,row['visible'].to_i,tag2array(row['tags'].to_s)] + xmin=[xmin,row['longitude'].to_f].min + xmax=[xmax,row['longitude'].to_f].max + ymin=[ymin,row['latitude' ].to_f].min + ymax=[ymax,row['latitude' ].to_f].max } + # get tags from this version attributes={} - attrlist=ActiveRecord::Base.connection.select_all "SELECT k,v FROM current_way_tags WHERE id=#{wayid}" - attrlist.each {|a| attributes[a['k']]=a['v'] } + attrlist=ActiveRecord::Base.connection.select_all "SELECT k,v FROM way_tags WHERE id=#{wayid} AND version=#{version}" + attrlist.each {|a| attributes[a['k'].gsub(':','|')]=a['v'] } + attributes['history']="Retrieved from v"+version.to_s + + [0,wayid,points,attributes,xmin,xmax,ymin,ymax,version] + end + + # ----- getway_history + # find history of a way + # in: [0] way id + # does: finds history of a way + # out: [0] array of previous versions (where each is + # [0] version, [1] db timestamp (string), + # [2] visible 0 or 1, + # [3] username or 'anonymous' (string)) + def getway_history(args) #:doc: + wayid=args[0] + history=[] + sql=<<-EOF + SELECT version,timestamp,visible,display_name,data_public + FROM ways,users + WHERE ways.id=#{wayid} + AND ways.user_id=users.id + AND ways.visible=1 + ORDER BY version DESC + EOF + histlist=ActiveRecord::Base.connection.select_all(sql) + histlist.each { |row| + if row['data_public'].to_i==1 then user=row['display_name'] else user='anonymous' end + history<<[row['version'],row['timestamp'],row['visible'],user] + } + [history] + end + + # ----- getrelation + # Get a relation with all of it's tags, and member IDs + # The input is an array with the following components, in order: + # 0. relid - the ID of the relation to get + # + # The output is an array which contains: + # [0] relation id, [1] hash of tags, [2] list of members + def getrelation(args) #:doc: + relid = args[0] + relid = relid.to_i + + RAILS_DEFAULT_LOGGER.info(" Message: getrel, id=#{relid}") + + rel = Relation.find(relid) - [objname,points,attributes,xmin,xmax,ymin,ymax] + [relid,rel.tags,rel.members]#nodes,ways] end - # ----- putway (user token, way, array of co-ordinates, array of attributes, - # baselong, basey, masterscale) - # returns current way ID, new way ID, hash of renumbered nodes, - # xmin,xmax,ymin,ymax + # ----- getrelation + # save relation to the database + # in: [0] user token (string), + # [1] original relation id (may be negative), + # [2] hash of tags, [3] list of members, + # [4] visible + # out: [0] 0 (success), [1] original relation id (unchanged), + # [2] new relation id + def putrelation(args, renumberednodes, renumberedways) #:doc: + usertoken,relid,tags,members,visible=args + uid=getuserid(usertoken) + if !uid then return -1,"You are not logged in, so the point could not be saved." end + + relid = relid.to_i + visible = visible.to_i + + # create a new relation, or find the existing one + if relid <= 0 + rel = Relation.new + else + rel = Relation.find(relid) + end + + # check the members are all positive, and correctly type + typedmembers = [] + members.each do |m| + mid = m[1].to_i + if mid < 0 + mid = renumberednodes[mid] if m[0] == 'node' + mid = renumberedways[mid] if m[0] == 'way' + if mid < 0 + return -2, "Negative ID unresolved" + end + end + typedmembers << [m[0], mid, m[2]] + end + + # assign new contents + rel.members = typedmembers + rel.tags = tags + rel.visible = visible + rel.user_id = uid + + # check it then save it + # BUG: the following is commented out because it always fails on my + # install. I think it's a Rails bug. + + #if !rel.preconditions_ok? + # return -2, "Relation preconditions failed" + #else + rel.save_with_history! + #end - def putway(args) - usertoken,originalway,points,attributes,baselong,basey,masterscale=args + [0,relid,rel.id] + end + + # ----- putway + # saves a way to the database + # in: [0] user token (string), + # [1] original way id (may be negative), + # [2] array of points (as getway/getway_old), + # [3] hash of way tags, + # [4] original way version (0 if not a reverted/undeleted way), + # [5] baselong, [6] basey, [7] masterscale + # does: saves way to the database + # all constituent nodes are created/updated as necessary + # (or deleted if they were in the old version and are otherwise unused) + # out: [0] 0 (code for success), [1] original way id (unchanged), + # [2] new way id, [3] hash of renumbered nodes (old id=>new id), + # [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox) + def putway(args,renumberednodes) #:doc: + RAILS_DEFAULT_LOGGER.info(" putway started") + usertoken,originalway,points,attributes,oldversion,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 + if !uid then return -1,"You are not logged in, so the way could not be saved." end + + RAILS_DEFAULT_LOGGER.info(" putway authenticated happily") + db_uqn='unin'+(rand*100).to_i.to_s+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'+(rand*100).to_i.to_s+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 + oldversion=oldversion.to_i RAILS_DEFAULT_LOGGER.info(" Message: putway, id=#{originalway}") + # -- Check for null IDs or short ways + + points.each do |a| + if a[2]==0 or a[2].nil? then return -2,"Server error - node with id 0 found in way #{originalway}." end + end + + if points.length<2 then return -2,"Server error - way is only #{points.length} points long." end + # -- 3. read original way into memory - xc={}; yc={}; tagc={}; seg={} + xc={}; yc={}; tagc={}; vc={} if originalway>0 way=originalway - readwayquery(way).each { |row| - id1=row['id1'].to_i; xc[id1]=row['long1'].to_f; yc[id1]=row['lat1'].to_f; tagc[id1]=row['tags1'] - id2=row['id2'].to_i; xc[id2]=row['long2'].to_f; yc[id2]=row['lat2'].to_f; tagc[id2]=row['tags2'] - seg[row['segment_id'].to_i]=id1.to_s+'-'+id2.to_s + if oldversion==0 then r=readwayquery(way,false) + else r=readwayquery_old(way,oldversion,true) end + r.each { |row| + id=row['id'].to_i + if (id>0) then + xc[id]=row['longitude'].to_f + yc[id]=row['latitude' ].to_f + tagc[id]=row['tags'] + vc[id]=row['visible'].to_i + end } ActiveRecord::Base.connection.update("UPDATE current_ways SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id=#{way}") else @@ -316,10 +411,10 @@ EOF # -- 5. compare nodes and update xmin,xmax,ymin,ymax - xmin = ymin = 999999 - xmax = ymax = -999999 - insertsql = '' - renumberednodes={} + xmin=ymin= 999999 + xmax=ymax=-999999 + insertsql='' + nodelist=[] points.each_index do |i| xs=coord2long(points[i][0],masterscale,baselong) @@ -328,7 +423,6 @@ EOF ymin=[ys,ymin].min; ymax=[ys,ymax].max node=points[i][2].to_i tagstr=array2tag(points[i][4]) - tagstr=tagstr.gsub(/[\000-\037]/,"") tagsql="'"+sqlescape(tagstr)+"'" lat=(ys * 10000000).round long=(xs * 10000000).round @@ -337,18 +431,20 @@ EOF # compare node if node<0 # new node - create - if renumberednodes[node.to_s].nil? + if renumberednodes[node.to_s].nil? newnode=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes ( latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES ( #{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})") - ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{newnode},#{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})") + ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{newnode},#{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})") points[i][2]=newnode + nodelist.push(newnode) renumberednodes[node.to_s]=newnode.to_s - else + else points[i][2]=renumberednodes[node.to_s].to_i - end + end elsif xc.has_key?(node) + nodelist.push(node) # old node from original way - update - if (xs!=xc[node] or ys!=yc[node] or tagstr!=tagc[node]) + if ((xs/0.0000001).round!=(xc[node]/0.0000001).round or (ys/0.0000001).round!=(yc[node]/0.0000001).round or tagstr!=tagc[node] or vc[node]==0) ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{node},#{lat},#{long},#{db_now},#{uid},1,#{tagsql},#{tile})") ActiveRecord::Base.connection.update("UPDATE current_nodes SET latitude=#{lat},longitude=#{long},timestamp=#{db_now},user_id=#{uid},tags=#{tagsql},visible=1,tile=#{tile} WHERE id=#{node}") end @@ -357,65 +453,15 @@ EOF end end + # -- 6a. delete any nodes not in modified way - # -- 6.i compare segments - - numberedsegments={} - seglist='' # list of existing segments that we want to keep - for i in (0..(points.length-2)) - if (points[i+1][3].to_i==0) then next end - segid=points[i+1][5].to_i - from =points[i ][2].to_i - to =points[i+1][2].to_i - if seg.has_key?(segid) - # if segment exists, check it still refers to the same nodes - if seg[segid]=="#{from}-#{to}" then - if (seglist!='') then seglist+=',' end; seglist+=segid.to_s - next - end - elsif segid>0 - # not in previous version of way, but supplied, so assume - # that it's come from makeway (i.e. unwayed segments) - if (seglist!='') then seglist+=',' end; seglist+=segid.to_s - next - 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,'')") - points[i+1][5]=segid - numberedsegments[(i+1).to_s]=segid.to_s - end - - - # -- 6.ii insert new way segments - - createuniquesegments(way,db_uqs,seglist) # segments which appear in this way but no other - - # delete segments from uniquesegments (and not in modified way) + createuniquenodes(way,db_uqn,nodelist) # nodes which appear in this way but no other 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 AND cs.visible=1 - EOF - ActiveRecord::Base.connection.insert(sql) - - 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 AND cs.visible=1 - EOF - ActiveRecord::Base.connection.update(sql) - - # delete nodes not in modified way or any other segments - - createuniquenodes(db_uqs,db_uqn) # nodes which appear in this way but no other - - sql=<<-EOF - INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile) - SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile - FROM current_nodes AS cn,#{db_uqn} - WHERE cn.id=node_id + INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile) + SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile + FROM current_nodes AS cn,#{db_uqn} + WHERE cn.id=node_id EOF ActiveRecord::Base.connection.insert(sql) @@ -426,26 +472,25 @@ EOF EOF ActiveRecord::Base.connection.update(sql) - ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqs}") - ActiveRecord::Base.connection.execute("DROP TABLE #{db_uqn}") + deleteuniquenoderelations(db_uqn,uid,db_now) + ActiveRecord::Base.connection.execute("DROP TEMPORARY TABLE #{db_uqn}") - # insert new version of route into way_segments + # 6b. insert new version of route into way_nodes insertsql ='' currentsql='' sequence =1 - for i in (0..(points.length-2)) - if (points[i+1][3].to_i==0) then next end + points.each do |p| if insertsql !='' then insertsql +=',' end if currentsql!='' then currentsql+=',' end - insertsql +="(#{way},#{points[i+1][5]},#{version})" - currentsql+="(#{way},#{points[i+1][5]},#{sequence})" + insertsql +="(#{way},#{p[2]},#{sequence},#{version})" + currentsql+="(#{way},#{p[2]},#{sequence})" sequence +=1 end - ActiveRecord::Base.connection.execute("DELETE FROM current_way_segments WHERE id=#{way}"); - ActiveRecord::Base.connection.insert("INSERT INTO way_segments (id,segment_id,version ) VALUES #{insertsql}"); - ActiveRecord::Base.connection.insert("INSERT INTO current_way_segments (id,segment_id,sequence_id) VALUES #{currentsql}"); + ActiveRecord::Base.connection.execute("DELETE FROM current_way_nodes WHERE id=#{way}"); + ActiveRecord::Base.connection.insert( "INSERT INTO way_nodes (id,node_id,sequence_id,version) VALUES #{insertsql}"); + ActiveRecord::Base.connection.insert( "INSERT INTO current_way_nodes (id,node_id,sequence_id ) VALUES #{currentsql}"); # -- 7. insert new way tags @@ -456,528 +501,308 @@ EOF if v[0,6]=='(type ' then next end if insertsql !='' then insertsql +=',' end if currentsql!='' then currentsql+=',' end - k=k.gsub(/[\000-\037]/,"") - v=v.gsub(/[\000-\037]/,"") - insertsql +="(#{way},'"+sqlescape(k)+"','"+sqlescape(v)+"',#{version})" - currentsql+="(#{way},'"+sqlescape(k)+"','"+sqlescape(v)+"')" + insertsql +="(#{way},'"+sqlescape(k.gsub('|',':'))+"','"+sqlescape(v)+"',#{version})" + currentsql+="(#{way},'"+sqlescape(k.gsub('|',':'))+"','"+sqlescape(v)+"')" end ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}") if (insertsql !='') then ActiveRecord::Base.connection.insert("INSERT INTO way_tags (id,k,v,version) VALUES #{insertsql}" ) end if (currentsql!='') then ActiveRecord::Base.connection.insert("INSERT INTO current_way_tags (id,k,v) VALUES #{currentsql}") end - [originalway,way,renumberednodes,numberedsegments,xmin,xmax,ymin,ymax] + [0,originalway,way,renumberednodes,xmin,xmax,ymin,ymax] end - # ----- putpoi (user token, id, x,y,tag array,visible,baselong,basey,masterscale) - # returns current id, new id - # if new: add new row to current_nodes and nodes - # if old: add new row to nodes, update current_nodes - - def putpoi(args) + # ----- putpoi + # save POI to the database + # in: [0] user token (string), + # [1] original node id (may be negative), + # [2] projected longitude, [3] projected latitude, + # [4] hash of tags, [5] visible (0 to delete, 1 otherwise), + # [6] baselong, [7] basey, [8] masterscale + # does: saves POI node to the database + # refuses save if the node has since become part of a way + # out: [0] 0 (success), [1] original node id (unchanged), + # [2] new node id + def putpoi(args) #:doc: usertoken,id,x,y,tags,visible,baselong,basey,masterscale=args uid=getuserid(usertoken) - return if !uid - db_now='@now'+uid.to_s+id.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars + if !uid then return -1,"You are not logged in, so the point could not be saved." end + + db_now='@now'+(rand*100).to_i.to_s+uid.to_s+id.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()") id=id.to_i visible=visible.to_i + if visible==0 then + # if deleting, check node hasn't become part of a way + inway=ActiveRecord::Base.connection.select_one("SELECT cw.id FROM current_ways cw,current_way_nodes cwn WHERE cw.id=cwn.id AND cw.visible=1 AND cwn.node_id=#{id} LIMIT 1") + unless inway.nil? then return -1,"The point has since become part of a way, so you cannot save it as a POI." end + deleteitemrelations(id,'node',uid,db_now) + end + x=coord2long(x.to_f,masterscale,baselong) y=coord2lat(y.to_f,masterscale,basey) tagsql="'"+sqlescape(array2tag(tags))+"'" lat=(y * 10000000).round long=(x * 10000000).round tile=QuadTile.tile_for_point(y, x) - + if (id>0) then - ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{id},#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); - ActiveRecord::Base.connection.update("UPDATE current_nodes SET latitude=#{lat},longitude=#{long},timestamp=#{db_now},user_id=#{uid},visible=#{visible},tags=#{tagsql},tile=#{tile} WHERE id=#{id}"); - newid=id + ActiveRecord::Base.connection.insert("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{id},#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); + ActiveRecord::Base.connection.update("UPDATE current_nodes SET latitude=#{lat},longitude=#{long},timestamp=#{db_now},user_id=#{uid},visible=#{visible},tags=#{tagsql},tile=#{tile} WHERE id=#{id}"); + newid=id else - newid=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes (latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); - ActiveRecord::Base.connection.update("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{newid},#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); + newid=ActiveRecord::Base.connection.insert("INSERT INTO current_nodes (latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); + ActiveRecord::Base.connection.update("INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tags,tile) VALUES (#{newid},#{lat},#{long},#{db_now},#{uid},#{visible},#{tagsql},#{tile})"); end - [id,newid] + [0,id,newid] end - # ----- getpoi (id,baselong,basey,masterscale) - # returns id,x,y,tag array - - def getpoi(args) - id,baselong,basey,masterscale=args; id=id.to_i - poi=ActiveRecord::Base.connection.select_one("SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lng,tags "+ - "FROM current_nodes WHERE visible=1 AND id=#{id}") - if poi.nil? then return [nil,nil,nil,''] end - [id, - long2coord(poi['lng'].to_f,baselong,masterscale), - lat2coord(poi['lat'].to_f,basey,masterscale), - tag2array(poi['tags'])] + # ----- getpoi + # read POI from database + # (only called on revert: POIs are usually read by whichways) + # in: [0] node id, [1] baselong, [2] basey, [3] masterscale + # does: reads POI + # out: [0] id (unchanged), [1] projected long, [2] projected lat, + # [3] hash of tags + def getpoi(args) #:doc: + id,baselong,basey,masterscale = args + + n = Node.find(id.to_i) + if n + return [n.id, n.lon_potlatch(baselong,masterscale), n.lat_potlatch(basey,masterscale), n.tags_as_hash] + else + return [nil,nil,nil,''] + end end - # ----- deleteway (user token, way) - # returns way ID only - - def deleteway(args) - usertoken,way=args - - RAILS_DEFAULT_LOGGER.info(" Message: deleteway, id=#{way}") + # ----- deleteway + # delete way and constituent nodes from database + # in: [0] user token (string), [1] way id + # does: deletes way from db and any constituent nodes not used elsewhere + # also removes ways/nodes from any relations they're in + # out: [0] 0 (success), [1] way id (unchanged) - 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_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 - - 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) - - 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) + def deleteway(args) #:doc: + usertoken,way_id=args + RAILS_DEFAULT_LOGGER.info(" Message: deleteway, id=#{way_id}") + uid=getuserid(usertoken) + if !uid then return -1,"You are not logged in, so the way could not be deleted." end - # - delete any unused nodes - - createuniquenodes(db_uqs,db_uqn) + user = User.find(uid) + way = Way.find(way_id) + way.delete_with_relations_and_nodes_and_history(user) + return [0,way_id] + end - sql=<<-EOF - INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile) - SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile - FROM current_nodes AS cn,#{db_uqn} - WHERE cn.id=node_id - EOF - ActiveRecord::Base.connection.insert(sql) + def readwayquery(id,insistonvisible) #:doc: 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 - -# ----- makeway(x,y,baselong,basey,masterscale) -# returns way made from unwayed segments + SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,current_nodes.id,tags,visible + FROM current_way_nodes,current_nodes + WHERE current_way_nodes.id=#{id} + AND current_way_nodes.node_id=current_nodes.id + EOF + if insistonvisible then sql+=" AND current_nodes.visible=1 " end + sql+=" ORDER BY sequence_id" + ActiveRecord::Base.connection.select_all(sql) + end -def makeway(args) - usertoken,x,y,baselong,basey,masterscale=args - uid=getuserid(usertoken) - return if !uid - - points=[] - toreverse=[] # segments to reverse - nodesused={} # so we don't go over the same node twice - - # - find start point near x - - xc=coord2long(x,masterscale,baselong) - yc=coord2lat(y,masterscale,basey) - - RAILS_DEFAULT_LOGGER.info(" Message: makeway, xc=#{xc}, y=#{yc}") - - xs1=xc-0.001; xs2=xc+0.001 - ys1=yc-0.001; ys2=yc+0.001 - - sql=<<-EOF - SELECT cn1.latitude*0.0000001 AS lat1,cn1.longitude*0.0000001 AS lon1,cn1.id AS id1, - cn2.latitude*0.0000001 AS lat2,cn2.longitude*0.0000001 AS lon2,cn2.id AS id2, cs.id AS segid - FROM current_nodes AS cn1, - current_nodes AS cn2, - current_segments AS cs - LEFT OUTER JOIN current_way_segments ON segment_id=cs.id - WHERE (cn1.longitude BETWEEN #{xs1} AND #{xs2}) - AND (cn1.latitude BETWEEN #{ys1} AND #{ys2}) - AND segment_id IS NULL - AND cs.visible=1 - AND cn1.id=node_a AND cn1.visible=1 - AND cn2.id=node_b AND cn2.visible=1 - ORDER BY SQRT(POW(cn1.longitude-#{xc},2)+ - POW(cn1.latitude -#{yc},2)) - LIMIT 1 - EOF - row=ActiveRecord::Base.connection.select_one sql - if row.nil? then return [0,0,0,0,0] end - xs1=long2coord(row['lon1'].to_f,baselong,masterscale); ys1=lat2coord(row['lat1'].to_f,basey,masterscale) - xs2=long2coord(row['lon2'].to_f,baselong,masterscale); ys2=lat2coord(row['lat2'].to_f,basey,masterscale) - xmin=[xs1,xs2].min; xmax=[xs1,xs2].max - ymin=[ys1,ys2].min; ymax=[ys1,ys2].max - nodesused[row['id1'].to_i]=true - nodesused[row['id2'].to_i]=true - points<<[xs1,ys1,row['id1'].to_i,1,{},0] - points<<[xs2,ys2,row['id2'].to_i,1,{},row['segid'].to_i] - - # - extend at start, then end - while (a,point,nodesused,toreverse=findconnect(points[0][2],nodesused,'b',toreverse,baselong,basey,masterscale))[0] - points[0][5]=point[5]; point[5]=0 # segment leads to next node - points.unshift(point) - xmin=[point[0],xmin].min; xmax=[point[0],xmax].max - ymin=[point[1],ymin].min; ymax=[point[1],ymax].max - end - while (a,point,nodesused,toreverse=findconnect(points[-1][2],nodesused,'a',toreverse,baselong,basey,masterscale))[0] - points.push(point) - xmin=[point[0],xmin].min; xmax=[point[0],xmax].max - ymin=[point[1],ymin].min; ymax=[point[1],ymax].max - end - points[0][3]=0 # start with a move - - # reverse segments in toreverse - if toreverse.length>0 - sql=<<-EOF - UPDATE current_segments c1, current_segments c2 - SET c1.node_a=c2.node_b,c1.node_b=c2.node_a, - c1.timestamp=NOW(),c1.user_id=#{uid} - WHERE c1.id=c2.id - AND c1.id IN (#{toreverse.join(',')}) - EOF - ActiveRecord::Base.connection.update sql - sql=<<-EOF - INSERT INTO segments - (SELECT * FROM current_segments - WHERE id IN (#{toreverse.join(',')})) - EOF - ActiveRecord::Base.connection.insert sql - end - - [points,xmin,xmax,ymin,ymax] -end + # Get the latest version id of a way + def getlastversion(id,version) #:doc: + old_way = OldWay.find(:first, :conditions => ['visible=1 AND id=?' , id], :order => 'version DESC') + old_way.version + end -def findconnect(id,nodesused,lookfor,toreverse,baselong,basey,masterscale) - # get all segments with 'id' as a point - # (to look for both node_a and node_b, UNION is faster than node_a=id OR node_b=id)! - sql=<<-EOF - SELECT cn1.latitude*0.0000001 AS lat1,cn1.longitude*0.0000001 AS lon1,cn1.id AS id1, - cn2.latitude*0.0000001 AS lat2,cn2.longitude*0.0000001 AS lon2,cn2.id AS id2, cs.id AS segid - FROM current_nodes AS cn1, - current_nodes AS cn2, - current_segments AS cs - LEFT OUTER JOIN current_way_segments ON segment_id=cs.id - WHERE segment_id IS NULL - AND cs.visible=1 - AND cn1.id=node_a AND cn1.visible=1 - AND cn2.id=node_b AND cn2.visible=1 - AND node_a=#{id} - UNION - SELECT cn1.latitude*0.0000001 AS lat1,cn1.longitude*0.0000001 AS lon1,cn1.id AS id1, - cn2.latitude*0.0000001 AS lat2,cn2.longitude*0.0000001 AS lon2,cn2.id AS id2, cs.id AS segid - FROM current_nodes AS cn1, - current_nodes AS cn2, - current_segments AS cs - LEFT OUTER JOIN current_way_segments ON segment_id=cs.id - WHERE segment_id IS NULL - AND cs.visible=1 - AND cn1.id=node_a AND cn1.visible=1 - AND cn2.id=node_b AND cn2.visible=1 - AND node_b=#{id} - EOF - connectlist=ActiveRecord::Base.connection.select_all sql - - if lookfor=='b' then tocol='id1'; tolat='lat1'; tolon='lon1'; fromcol='id2'; fromlat='lat2'; fromlon='lon2' - else tocol='id2'; tolat='lat2'; tolon='lon2'; fromcol='id1'; fromlat='lat1'; fromlon='lon1' - end - - # eliminate those already in the hash - connex=0 - point=nil - connectlist.each { |row| - tonode=row[tocol].to_i - fromnode=row[fromcol].to_i - if id==tonode and !nodesused.has_key?(fromnode) - # wrong way round; add, then add to 'segments to reverse' list - connex+=1 - nodesused[fromnode]=true - point=[long2coord(row[fromlon].to_f,baselong,masterscale),lat2coord(row[fromlat].to_f,basey,masterscale),fromnode,1,{},row['segid'].to_i] - toreverse.push(row['segid'].to_i) - elsif id==fromnode and !nodesused.has_key?(tonode) - # right way round; just add - connex+=1 - point=[long2coord(row[tolon].to_f,baselong,masterscale),lat2coord(row[tolat].to_f,basey,masterscale),tonode,1,{},row['segid'].to_i] - nodesused[tonode]=true - end - } - - # if only one left, then add it; otherwise return false - if connex!=1 or point.nil? then - return [false,[],nodesused,toreverse] - else - return [true,point,nodesused,toreverse] - end -end + def readwayquery_old(id,version,historic) #:doc: + # Node handling on undelete (historic=false): + # - always use the node specified, even if it's moved + # Node handling on revert (historic=true): + # - if it's a visible node, use a new node id (i.e. not mucking up the old one) + # which means the SWF needs to allocate new ids + # - if it's an invisible node, we can reuse the old node id -# ==================================================================== -# Support functions for remote calls + # get node list from specified version of way, + # and the _current_ lat/long/tags of each node -def readwayquery(id) - ActiveRecord::Base.connection.select_all "SELECT n1.latitude*0.0000001 AS lat1,n1.longitude*0.0000001 AS long1,n1.id AS id1,n1.tags as tags1, "+ - " n2.latitude*0.0000001 AS lat2,n2.longitude*0.0000001 AS long2,n2.id AS id2,n2.tags as tags2,segment_id "+ - " FROM current_way_segments,current_segments,current_nodes AS n1,current_nodes AS n2 "+ - " WHERE current_way_segments.id=#{id} "+ - " AND segment_id=current_segments.id "+ - " AND current_segments.visible=1 "+ - " AND n1.id=node_a AND n2.id=node_b "+ - " AND n1.visible=1 AND n2.visible=1 "+ - " ORDER BY sequence_id" -end + row=ActiveRecord::Base.connection.select_one("SELECT timestamp FROM ways WHERE version=#{version} AND id=#{id}") + waytime=row['timestamp'] -def createuniquesegments(way,uqs_name,seglist) - # Finds segments which appear in (previous version of) this way and no other - sql=<<-EOF - CREATE TEMPORARY TABLE #{uqs_name} - SELECT a.segment_id - FROM (SELECT DISTINCT segment_id FROM current_way_segments - WHERE id = #{way}) a - LEFT JOIN current_way_segments b - ON b.segment_id = a.segment_id - AND b.id != #{way} - WHERE b.segment_id IS NULL + sql=<<-EOF + SELECT cn.id,visible,latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,tags + FROM way_nodes wn,current_nodes cn + WHERE wn.version=#{version} + AND wn.id=#{id} + AND wn.node_id=cn.id + ORDER BY sequence_id + EOF + rows=ActiveRecord::Base.connection.select_all(sql) + + # if historic (full revert), get the old version of each node + # - if it's in another way now, generate a new id + # - if it's not in another way, use the old ID + if historic then + rows.each_index do |i| + sql=<<-EOF + SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,tags,cwn.id AS currentway + FROM nodes n + LEFT JOIN current_way_nodes cwn + ON cwn.node_id=n.id + WHERE n.id=#{rows[i]['id']} + AND n.timestamp<="#{waytime}" + AND cwn.id!=#{id} + ORDER BY n.timestamp DESC + LIMIT 1 EOF - if (seglist!='') then sql+=" AND a.segment_id NOT IN (#{seglist})" end - 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) 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) - sql=<<-EOF - INSERT INTO #{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_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) -end - -def tag2array(a) - tags={} - a.gsub(';;;','#%').split(';').each do |b| - b.gsub!('#%',';;;') - b.gsub!('===','#%') - k,v=b.split('=') - if k.nil? then k='' end - if v.nil? then v='' end - tags[k.gsub('#%','=')]=v.gsub('#%','=') - end - tags -end - -def array2tag(a) - str='' - a.each do |k,v| - if v=='' then next end - if v[0,6]=='(type ' then next end - if str!='' then str+=';' end - str+=k.gsub(';',';;;').gsub('=','===')+'='+v.gsub(';',';;;').gsub('=','===') + row=ActiveRecord::Base.connection.select_one(sql) + unless row.nil? then + nx=row['longitude'].to_f + ny=row['latitude'].to_f + if (row['currentway'] && (nx!=rows[i]['longitude'].to_f or ny!=rows[i]['latitude'].to_f or row['tags']!=rows[i]['tags'])) then rows[i]['id']=-1 end + rows[i]['longitude']=nx + rows[i]['latitude' ]=ny + rows[i]['tags' ]=row['tags'] + end + end + end + rows end - str -end -def getuserid(token) - if (token =~ /^(.+)\+(.+)$/) then - user = User.authenticate(:username => $1, :password => $2) - else - user = User.authenticate(:token => token) + def createuniquenodes(way,uqn_name,nodelist) #:doc: + # Find nodes which appear in this way but no others + sql=<<-EOF + CREATE TEMPORARY TABLE #{uqn_name} + SELECT a.node_id + FROM (SELECT DISTINCT node_id FROM current_way_nodes + WHERE id=#{way}) a + LEFT JOIN current_way_nodes b + ON b.node_id=a.node_id + AND b.id!=#{way} + WHERE b.node_id IS NULL + EOF + unless nodelist.empty? then + sql+="AND a.node_id NOT IN ("+nodelist.join(',')+")" + end + ActiveRecord::Base.connection.execute(sql) end - return user ? user.id : nil; -end - - - -# ==================================================================== -# AMF read subroutines - -# ----- getint return two-byte integer -# ----- getlong return four-byte long -# ----- getstring return string with two-byte length -# ----- getdouble return eight-byte double-precision float -# ----- getobject return object/hash -# ----- getarray return numeric array - -def getint(s) - s.getc*256+s.getc -end - -def getlong(s) - ((s.getc*256+s.getc)*256+s.getc)*256+s.getc -end -def getstring(s) - len=s.getc*256+s.getc - s.read(len) -end -def getdouble(s) - a=s.read(8).unpack('G') # G big-endian, E little-endian - a[0] -end + # ==================================================================== + # Relations handling + # deleteuniquenoderelations(uqn_name,uid,db_now) + # deleteitemrelations(way|node,'way'|'node',uid,db_now) -def getarray(s) - len=getlong(s) - arr=[] - for i in (0..len-1) - arr[i]=getvalue(s) + def deleteuniquenoderelations(uqn_name,uid,db_now) #:doc: + sql=<<-EOF + SELECT node_id,cr.id FROM #{uqn_name},current_relation_members crm,current_relations cr + WHERE crm.member_id=node_id + AND crm.member_type='node' + AND crm.id=cr.id + AND cr.visible=1 + EOF + + relnodes=ActiveRecord::Base.connection.select_all(sql) + relnodes.each do |a| + removefromrelation(a['node_id'],'node',a['id'],uid,db_now) + end end - arr -end -def getobject(s) - arr={} - while (key=getstring(s)) - if (key=='') then break end - arr[key]=getvalue(s) + def deleteitemrelations(objid,type,uid,db_now) #:doc: + sql=<<-EOF + SELECT cr.id FROM current_relation_members crm,current_relations cr + WHERE crm.member_id=#{objid} + AND crm.member_type='#{type}' + AND crm.id=cr.id + AND cr.visible=1 + EOF + + relways=ActiveRecord::Base.connection.select_all(sql) + relways.each do |a| + removefromrelation(objid,type,a['id'],uid,db_now) + end end - s.getc # skip the 9 'end of object' value - arr -end -# ----- getvalue parse and get value - -def getvalue(s) - case s.getc - when 0; return getdouble(s) # number - when 1; return s.getc # boolean - when 2; return getstring(s) # string - when 3; return getobject(s) # object/hash - when 5; return nil # null - when 6; return nil # undefined - when 8; s.read(4) # mixedArray - return getobject(s) # | - when 10; return getarray(s) # array - else; return nil # error + def removefromrelation(objid,type,relation,uid,db_now) #:doc: + rver=ActiveRecord::Base.connection.insert("INSERT INTO relations (id,user_id,timestamp,visible) VALUES (#{relation},#{uid},#{db_now},1)") + + tagsql=<<-EOF + INSERT INTO relation_tags (id,k,v,version) + SELECT id,k,v,#{rver} FROM current_relation_tags + WHERE id=#{relation} + EOF + ActiveRecord::Base.connection.insert(tagsql) + + membersql=<<-EOF + INSERT INTO relation_members (id,member_type,member_id,member_role,version) + SELECT id,member_type,member_id,member_role,#{rver} FROM current_relation_members + WHERE id=#{relation} + AND (member_id!=#{objid} OR member_type!='#{type}') + EOF + ActiveRecord::Base.connection.insert(membersql) + + ActiveRecord::Base.connection.update("UPDATE current_relations SET user_id=#{uid},timestamp=#{db_now} WHERE id=#{relation}") + ActiveRecord::Base.connection.execute("DELETE FROM current_relation_members WHERE id=#{relation} AND member_type='#{type}' AND member_id=#{objid}") end -end -# ==================================================================== -# AMF write subroutines - -# ----- putdata envelope data into AMF writeable form -# ----- encodevalue pack variables as AMF - -def putdata(index,n) - d =encodestring(index+"/onResult") - d+=encodestring("null") - d+=[-1].pack("N") - d+=encodevalue(n) -end + def sqlescape(a) #:doc: + a.gsub(/[\000-\037]/,"").gsub("'","''").gsub(92.chr) {92.chr+92.chr} + end -def encodevalue(n) - case n.class.to_s - when 'Array' - a=10.chr+encodelong(n.length) - n.each do |b| - a+=encodevalue(b) - end - a - when 'Hash' - a=3.chr - n.each do |k,v| - a+=encodestring(k)+encodevalue(v) + def tag2array(a) #:doc: + tags={} + Tags.split(a) do |k, v| + tags[k.gsub(':','|')]=v end - a+0.chr+0.chr+9.chr - when 'String' - 2.chr+encodestring(n) - when 'Bignum','Fixnum','Float' - 0.chr+encodedouble(n) - when 'NilClass' - 5.chr - else - RAILS_DEFAULT_LOGGER.error("Unexpected Ruby type for AMF conversion: "+n.class.to_s) + tags end -end -# ----- encodestring encode string with two-byte length -# ----- encodedouble encode number as eight-byte double precision float -# ----- encodelong encode number as four-byte long - -def encodestring(n) - a,b=n.size.divmod(256) - a.chr+b.chr+n -end + def array2tag(a) #:doc: + tags = [] + a.each do |k,v| + if v=='' then next end + if v[0,6]=='(type ' then next end + tags << [k.gsub('|',':'), v] + end + return Tags.join(tags) + end -def encodedouble(n) - [n].pack('G') -end + def getuserid(token) #:doc: + if (token =~ /^(.+)\+(.+)$/) then + user = User.authenticate(:username => $1, :password => $2) + else + user = User.authenticate(:token => token) + end -def encodelong(n) - [n].pack('N') -end + return user ? user.id : nil; + end -# ==================================================================== -# Co-ordinate conversion + # ==================================================================== + # Co-ordinate conversion -def lat2coord(a,basey,masterscale) - -(lat2y(a)-basey)*masterscale+250 -end + def lat2coord(a,basey,masterscale) #:doc: + -(lat2y(a)-basey)*masterscale + end -def long2coord(a,baselong,masterscale) - (a-baselong)*masterscale+350 -end + def long2coord(a,baselong,masterscale) #:doc: + (a-baselong)*masterscale + end -def lat2y(a) - 180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2)) -end + def lat2y(a) #:doc: + 180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2)) + end -def coord2lat(a,masterscale,basey) - y2lat((a-250)/-masterscale+basey) -end + def coord2lat(a,masterscale,basey) #:doc: + y2lat(a/-masterscale+basey) + end -def coord2long(a,masterscale,baselong) - (a-350)/masterscale+baselong -end + def coord2long(a,masterscale,baselong) #:doc: + a/masterscale+baselong + end -def y2lat(a) - 180/Math::PI * (2*Math.atan(Math.exp(a*Math::PI/180))-Math::PI/2) -end + def y2lat(a) + 180/Math::PI * (2*Math.atan(Math.exp(a*Math::PI/180))-Math::PI/2) + end end