1 class AmfController < ApplicationController
5 before_filter :check_write_availability
7 # AMF controller for Potlatch
8 # ---------------------------
9 # All interaction between Potlatch (as a .SWF application) and the
10 # OSM database takes place using this controller. Messages are
11 # encoded in the Actionscript Message Format (AMF).
13 # Public domain. Set your tab width to 4 to read this document. :)
14 # editions Systeme D / Richard Fairhurst 2004-2008
16 # All in/out parameters are floats unless explicitly stated.
18 # to trap errors (getway_old,putway,putpoi,deleteway only):
19 # return(-1,"message") <-- just puts up a dialogue
20 # return(-2,"message") <-- also asks the user to e-mail me
22 # RAILS_DEFAULT_LOGGER.error("Args: #{args[0]}, #{args[1]}, #{args[2]}, #{args[3]}")
24 # ====================================================================
27 # ---- talk process AMF request
30 req=StringIO.new(request.raw_post+0.chr) # Get POST data as request
31 # (cf http://www.ruby-forum.com/topic/122163)
32 req.read(2) # Skip version indicator and client ID
33 results={} # Results of each body
34 renumberednodes={} # Shared across repeated putways
39 headers=getint(req) # Read number of headers
41 headers.times do # Read each header
42 name=getstring(req) # |
43 req.getc # | skip boolean
44 value=getvalue(req) # |
45 header["name"]=value # |
48 bodies=getint(req) # Read number of bodies
49 bodies.times do # Read each body
50 message=getstring(req) # | get message name
51 index=getstring(req) # | get index in response sequence
52 bytes=getlong(req) # | get total size in bytes
53 args=getvalue(req) # | get response (probably an array)
56 when 'getpresets'; results[index]=putdata(index,getpresets)
57 when 'whichways'; results[index]=putdata(index,whichways(args))
58 when 'whichways_deleted'; results[index]=putdata(index,whichways_deleted(args))
59 when 'getway'; results[index]=putdata(index,getway(args))
60 when 'getway_old'; results[index]=putdata(index,getway_old(args))
61 when 'getway_history'; results[index]=putdata(index,getway_history(args))
62 when 'putway'; r=putway(args,renumberednodes)
64 results[index]=putdata(index,r)
65 when 'deleteway'; results[index]=putdata(index,deleteway(args))
66 when 'putpoi'; results[index]=putdata(index,putpoi(args))
67 when 'getpoi'; results[index]=putdata(index,getpoi(args))
74 RAILS_DEFAULT_LOGGER.info(" Response: start")
75 a,b=results.length.divmod(256)
76 render :content_type => "application/x-amf", :text => proc { |response, output|
77 output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr
82 RAILS_DEFAULT_LOGGER.info(" Response: end")
89 # ====================================================================
94 # does: reads tag preset menus, colours, and autocomplete config files
95 # out: [0] presets, [1] presetmenus, [2] presetnames,
96 # [3] colours, [4] casing, [5] areas, [6] autotags
100 RAILS_DEFAULT_LOGGER.info(" Message: getpresets")
104 presetmenus={}; presetmenus['point']=[]; presetmenus['way']=[]; presetmenus['POI']=[]
105 presetnames={}; presetnames['point']={}; presetnames['way']={}; presetnames['POI']={}
108 # StringIO.open(txt) do |file|
109 File.open("#{RAILS_ROOT}/config/potlatch/presets.txt") do |file|
110 file.each_line {|line|
112 if (t=~/(\w+)\/(\w+)/) then
115 presetmenus[presettype].push(presetcategory)
116 presetnames[presettype][presetcategory]=["(no preset)"]
117 elsif (t=~/^(.+):\s?(.+)$/) then
119 presetnames[presettype][presetcategory].push(pre)
121 kv.split(',').each {|a|
122 if (a=~/^(.+)=(.*)$/) then presets[pre][$1]=$2 end
128 # Read colours/styling
129 colours={}; casing={}; areas={}
130 File.open("#{RAILS_ROOT}/config/potlatch/colours.txt") do |file|
131 file.each_line {|line|
133 if (t=~/(\w+)\s+([^\s]+)\s+([^\s]+)\s+([^\s]+)/) then
135 if ($2!='-') then colours[tag]=$2.hex end
136 if ($3!='-') then casing[tag]=$3.hex end
137 if ($4!='-') then areas[tag]=$4.hex end
143 autotags={}; autotags['point']={}; autotags['way']={}; autotags['POI']={};
144 File.open("#{RAILS_ROOT}/config/potlatch/autocomplete.txt") do |file|
145 file.each_line {|line|
147 if (t=~/^(\w+)\/(\w+)\s+(.+)$/) then
148 tag=$1; type=$2; values=$3
149 if values=='-' then autotags[type][tag]=[]
150 else autotags[type][tag]=values.split(',').sort.reverse end
155 [presets,presetmenus,presetnames,colours,casing,areas,autotags]
161 # Find all the way ids and nodes (including tags and projected lat/lng) which aren't part of those ways in an are
163 # The argument is an array containing the following, in order:
164 # 0. minimum longitude
165 # 1. minimum latitude
166 # 2. maximum longitude
167 # 3. maximum latitude
168 # 4. baselong, 5. basey, 6. masterscale as above
171 xmin = args[0].to_f-0.01
172 ymin = args[1].to_f-0.01
173 xmax = args[2].to_f+0.01
174 ymax = args[3].to_f+0.01
177 masterscale = args[6]
179 RAILS_DEFAULT_LOGGER.info(" Message: whichways, bbox=#{xmin},#{ymin},#{xmax},#{ymax}")
181 # find the way ids in an area
182 nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax,:conditions => "visible = 1", :include => :way_nodes)
183 waynodes_in_area = nodes_in_area.collect {|node| node.way_nodes }.flatten
184 ways = waynodes_in_area.collect {|way_node| way_node.id[0]}.uniq
186 # find the node ids in an area that aren't part of ways
187 node_ids_in_area = nodes_in_area.collect {|node| node.id}.uniq
188 node_ids_used_in_ways = waynodes_in_area.collect {|way_node| way_node.node_id}.uniq
189 node_ids_not_used_in_area = node_ids_in_area - node_ids_used_in_ways
190 nodes_not_used_in_area = Node.find(node_ids_not_used_in_area)
191 points = nodes_not_used_in_area.collect {|n| [n.id, n.lon_potlatch(baselong,masterscale), n.lat_potlatch(basey,masterscale), n.tags_as_hash] }
196 # ----- whichways_deleted
197 # return array of deleted ways in current bounding box
199 # does: finds all deleted ways with a deleted node in bounding box
200 # out: [0] array of way ids
202 def whichways_deleted(args)
203 xmin = args[0].to_f-0.01
204 ymin = args[1].to_f-0.01
205 xmax = args[2].to_f+0.01
206 ymax = args[3].to_f+0.01
209 masterscale = args[6]
212 SELECT DISTINCT current_ways.id
213 FROM current_nodes,way_nodes,current_ways
214 WHERE #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
215 AND way_nodes.node_id=current_nodes.id
216 AND way_nodes.id=current_ways.id
217 AND current_nodes.visible=0
218 AND current_ways.visible=0
220 waylist = ActiveRecord::Base.connection.select_all(sql)
221 ways = waylist.collect {|a| a['id'].to_i }
228 # Get a way with all of it's nodes and tags
229 # The input is an array with the following components, in order:
230 # 0. wayid - the ID of the way to get
231 # 1. baselong - origin of SWF map (longitude)
232 # 2. basey - origin of SWF map (latitude)
233 # 3. masterscale - SWF map scale
235 # The output is an array which contains all the nodes (with projected
236 # latitude and longitude) and tags for a way (and all the nodes tags).
237 # It also has the way's unprojected (WGS84) bbox.
239 # FIXME: The server really shouldn't be figuring out a ways bounding box and doing projection for potlatch
240 # FIXME: the argument splitting should be done in the 'talk' method, not here
243 wayid,baselong,basey,masterscale = args
246 RAILS_DEFAULT_LOGGER.info(" Message: getway, id=#{wayid}")
248 way = Way.find_eager(wayid)
253 way.way_nodes.each do |way_node|
254 node = way_node.node # get the node record
255 projected_longitude = node.lon_potlatch(baselong,masterscale) # do projection for potlatch
256 projected_latitude = node.lat_potlatch(basey,masterscale)
258 tags_hash = node.tags_as_hash
260 points << [projected_longitude, projected_latitude, id, nil, tags_hash]
261 long_array << projected_longitude
262 lat_array << projected_latitude
265 [wayid,points,way.tags,long_array.min,long_array.max,lat_array.min,lat_array.max]
269 # returns old version of way
272 # [1] way version to get (or -1 for "last deleted version")
273 # [2] baselong, [3] basey, [4] masterscale
274 # does: gets old version of way and all constituent nodes
275 # for undelete, always uses the most recent version of each node
276 # (even if it's moved)
277 # for revert, uses the historic version of each node, but if that node is
278 # still visible and has been changed since, generates a new node id
279 # out: [0] 0 (code for success), [1] SWF object name,
280 # [2] array of points (as getway _except_ [3] is node.visible?, 0 or 1),
281 # [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox),
285 RAILS_DEFAULT_LOGGER.info(" Message: getway_old (server is #{SERVER_URL})")
286 # if SERVER_URL=="www.openstreetmap.org" then return -1,"Revert is not currently enabled on the OpenStreetMap server." end
288 wayid,version,baselong,basey,masterscale=args
290 version = version.to_i
292 xmax = ymax = -999999
296 version=getlastversion(wayid,version)
300 readwayquery_old(wayid,version,historic).each { |row|
301 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)]
302 xmin=[xmin,row['longitude'].to_f].min
303 xmax=[xmax,row['longitude'].to_f].max
304 ymin=[ymin,row['latitude' ].to_f].min
305 ymax=[ymax,row['latitude' ].to_f].max
308 # get tags from this version
310 attrlist=ActiveRecord::Base.connection.select_all "SELECT k,v FROM way_tags WHERE id=#{wayid} AND version=#{version}"
311 attrlist.each {|a| attributes[a['k'].gsub(':','|')]=a['v'] }
312 attributes['history']="Retrieved from v"+version.to_s
314 [0,wayid,points,attributes,xmin,xmax,ymin,ymax,version]
317 # ----- getway_history
318 # find history of a way
321 # does: finds history of a way
322 # out: [0] array of previous versions (where each is
323 # [0] version, [1] db timestamp (string),
324 # [2] visible 0 or 1,
325 # [3] username or 'anonymous' (string))
327 def getway_history(args)
331 SELECT version,timestamp,visible,display_name,data_public
333 WHERE ways.id=#{wayid}
334 AND ways.user_id=users.id
336 ORDER BY version DESC
338 histlist=ActiveRecord::Base.connection.select_all(sql)
339 histlist.each { |row|
340 if row['data_public'].to_i==1 then user=row['display_name'] else user='anonymous' end
341 history<<[row['version'],row['timestamp'],row['visible'],user]
347 # saves a way to the database
349 # in: [0] user token (string),
350 # [1] original way id (may be negative),
351 # [2] array of points (as getway/getway_old),
352 # [3] hash of way tags,
353 # [4] original way version (0 if not a reverted/undeleted way),
354 # [5] baselong, [6] basey, [7] masterscale
355 # does: saves way to the database
356 # all constituent nodes are created/updated as necessary
357 # (or deleted if they were in the old version and are otherwise unused)
358 # out: [0] 0 (code for success), [1] original way id (unchanged),
359 # [2] new way id, [3] hash of renumbered nodes (old id=>new id),
360 # [4] xmin, [5] xmax, [6] ymin, [7] ymax (unprojected bbox)
362 def putway(args,renumberednodes)
363 RAILS_DEFAULT_LOGGER.info(" putway started")
364 usertoken,originalway,points,attributes,oldversion,baselong,basey,masterscale=args
365 uid=getuserid(usertoken)
366 if !uid then return -1,"You are not logged in, so the way could not be saved." end
368 RAILS_DEFAULT_LOGGER.info(" putway authenticated happily")
369 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
370 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
371 ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
372 originalway=originalway.to_i
373 oldversion=oldversion.to_i
375 RAILS_DEFAULT_LOGGER.info(" Message: putway, id=#{originalway}")
377 # -- Temporary check for null IDs
380 if a[2]==0 or a[2].nil? then return -2,"Server error - node with id 0 found in way #{originalway}." end
383 # -- 3. read original way into memory
385 xc={}; yc={}; tagc={}; vc={}
388 if oldversion==0 then r=readwayquery(way,false)
389 else r=readwayquery_old(way,oldversion,true) end
393 xc[id]=row['longitude'].to_f
394 yc[id]=row['latitude' ].to_f
396 vc[id]=row['visible'].to_i
399 ActiveRecord::Base.connection.update("UPDATE current_ways SET timestamp=#{db_now},user_id=#{uid},visible=1 WHERE id=#{way}")
401 way=ActiveRecord::Base.connection.insert("INSERT INTO current_ways (user_id,timestamp,visible) VALUES (#{uid},#{db_now},1)")
404 # -- 4. get version by inserting new row into ways
406 version=ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},1)")
408 # -- 5. compare nodes and update xmin,xmax,ymin,ymax
415 points.each_index do |i|
416 xs=coord2long(points[i][0],masterscale,baselong)
417 ys=coord2lat(points[i][1],masterscale,basey)
418 xmin=[xs,xmin].min; xmax=[xs,xmax].max
419 ymin=[ys,ymin].min; ymax=[ys,ymax].max
420 node=points[i][2].to_i
421 tagstr=array2tag(points[i][4])
422 tagsql="'"+sqlescape(tagstr)+"'"
423 lat=(ys * 10000000).round
424 long=(xs * 10000000).round
425 tile=QuadTile.tile_for_point(ys, xs)
430 if renumberednodes[node.to_s].nil?
431 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})")
432 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})")
434 nodelist.push(newnode)
435 renumberednodes[node.to_s]=newnode.to_s
437 points[i][2]=renumberednodes[node.to_s].to_i
440 elsif xc.has_key?(node)
442 # old node from original way - update
443 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)
444 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})")
445 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}")
448 # old node, created in another way and now added to this way
453 # -- 6a. delete any nodes not in modified way
455 createuniquenodes(way,db_uqn,nodelist) # nodes which appear in this way but no other
458 INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile)
459 SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile
460 FROM current_nodes AS cn,#{db_uqn}
463 ActiveRecord::Base.connection.insert(sql)
466 UPDATE current_nodes AS cn, #{db_uqn}
467 SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
470 ActiveRecord::Base.connection.update(sql)
472 deleteuniquenoderelations(db_uqn,uid,db_now)
473 ActiveRecord::Base.connection.execute("DROP TEMPORARY TABLE #{db_uqn}")
475 # 6b. insert new version of route into way_nodes
481 if insertsql !='' then insertsql +=',' end
482 if currentsql!='' then currentsql+=',' end
483 insertsql +="(#{way},#{p[2]},#{sequence},#{version})"
484 currentsql+="(#{way},#{p[2]},#{sequence})"
488 ActiveRecord::Base.connection.execute("DELETE FROM current_way_nodes WHERE id=#{way}");
489 ActiveRecord::Base.connection.insert( "INSERT INTO way_nodes (id,node_id,sequence_id,version) VALUES #{insertsql}");
490 ActiveRecord::Base.connection.insert( "INSERT INTO current_way_nodes (id,node_id,sequence_id ) VALUES #{currentsql}");
492 # -- 7. insert new way tags
496 attributes.each do |k,v|
497 if v=='' or v.nil? then next end
498 if v[0,6]=='(type ' then next end
499 if insertsql !='' then insertsql +=',' end
500 if currentsql!='' then currentsql+=',' end
501 insertsql +="(#{way},'"+sqlescape(k.gsub('|',':'))+"','"+sqlescape(v)+"',#{version})"
502 currentsql+="(#{way},'"+sqlescape(k.gsub('|',':'))+"','"+sqlescape(v)+"')"
505 ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
506 if (insertsql !='') then ActiveRecord::Base.connection.insert("INSERT INTO way_tags (id,k,v,version) VALUES #{insertsql}" ) end
507 if (currentsql!='') then ActiveRecord::Base.connection.insert("INSERT INTO current_way_tags (id,k,v) VALUES #{currentsql}") end
509 [0,originalway,way,renumberednodes,xmin,xmax,ymin,ymax]
513 # save POI to the database
515 # in: [0] user token (string),
516 # [1] original node id (may be negative),
517 # [2] projected longitude, [3] projected latitude,
518 # [4] hash of tags, [5] visible (0 to delete, 1 otherwise),
519 # [6] baselong, [7] basey, [8] masterscale
520 # does: saves POI node to the database
521 # refuses save if the node has since become part of a way
522 # out: [0] 0 (success), [1] original node id (unchanged),
526 usertoken,id,x,y,tags,visible,baselong,basey,masterscale=args
527 uid=getuserid(usertoken)
528 if !uid then return -1,"You are not logged in, so the point could not be saved." end
530 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
531 ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
536 # if deleting, check node hasn't become part of a way
537 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")
538 unless inway.nil? then return -1,"The point has since become part of a way, so you cannot save it as a POI." end
539 deleteitemrelations(id,'node',uid,db_now)
542 x=coord2long(x.to_f,masterscale,baselong)
543 y=coord2lat(y.to_f,masterscale,basey)
544 tagsql="'"+sqlescape(array2tag(tags))+"'"
545 lat=(y * 10000000).round
546 long=(x * 10000000).round
547 tile=QuadTile.tile_for_point(y, x)
550 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})");
551 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}");
554 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})");
555 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})");
561 # read POI from database
562 # (only called on revert: POIs are usually read by whichways)
564 # in: [0] node id, [1] baselong, [2] basey, [3] masterscale
566 # out: [0] id (unchanged), [1] projected long, [2] projected lat,
570 id,baselong,basey,masterscale=args; id=id.to_i
571 poi=ActiveRecord::Base.connection.select_one("SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lng,tags "+
572 "FROM current_nodes WHERE visible=1 AND id=#{id}")
573 if poi.nil? then return [nil,nil,nil,''] end
575 long2coord(poi['lng'].to_f,baselong,masterscale),
576 lat2coord(poi['lat'].to_f,basey,masterscale),
577 tag2array(poi['tags'])]
581 # delete way and constituent nodes from database
583 # in: [0] user token (string), [1] way id
584 # does: deletes way from db and any constituent nodes not used elsewhere
585 # also removes ways/nodes from any relations they're in
586 # out: [0] 0 (success), [1] way id (unchanged)
591 RAILS_DEFAULT_LOGGER.info(" Message: deleteway, id=#{way}")
592 uid=getuserid(usertoken)
593 if !uid then return -1,"You are not logged in, so the way could not be deleted." end
596 db_uqn='unin'+(rand*100).to_i.to_s+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # temp uniquenodes table name, typically 51 chars
597 db_now='@now'+(rand*100).to_i.to_s+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s # 'now' variable name, typically 51 chars
598 ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
600 # - delete any otherwise unused nodes
602 createuniquenodes(way,db_uqn,[])
604 # unless (preserve.empty?) then
605 # ActiveRecord::Base.connection.execute("DELETE FROM #{db_uqn} WHERE node_id IN ("+preserve.join(',')+")")
609 INSERT INTO nodes (id,latitude,longitude,timestamp,user_id,visible,tile)
610 SELECT DISTINCT cn.id,cn.latitude,cn.longitude,#{db_now},#{uid},0,cn.tile
611 FROM current_nodes AS cn,#{db_uqn}
614 ActiveRecord::Base.connection.insert(sql)
617 UPDATE current_nodes AS cn, #{db_uqn}
618 SET cn.timestamp=#{db_now},cn.visible=0,cn.user_id=#{uid}
621 ActiveRecord::Base.connection.update(sql)
623 deleteuniquenoderelations(db_uqn,uid,db_now)
624 ActiveRecord::Base.connection.execute("DROP TEMPORARY TABLE #{db_uqn}")
628 ActiveRecord::Base.connection.insert("INSERT INTO ways (id,user_id,timestamp,visible) VALUES (#{way},#{uid},#{db_now},0)")
629 ActiveRecord::Base.connection.update("UPDATE current_ways SET user_id=#{uid},timestamp=#{db_now},visible=0 WHERE id=#{way}")
630 ActiveRecord::Base.connection.execute("DELETE FROM current_way_nodes WHERE id=#{way}")
631 ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
632 deleteitemrelations(way,'way',uid,db_now)
638 # ====================================================================
639 # Support functions for remote calls
641 def readwayquery(id,insistonvisible)
643 SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,current_nodes.id,tags,visible
644 FROM current_way_nodes,current_nodes
645 WHERE current_way_nodes.id=#{id}
646 AND current_way_nodes.node_id=current_nodes.id
648 if insistonvisible then sql+=" AND current_nodes.visible=1 " end
649 sql+=" ORDER BY sequence_id"
650 ActiveRecord::Base.connection.select_all(sql)
653 def getlastversion(id,version)
654 row=ActiveRecord::Base.connection.select_one("SELECT version FROM ways WHERE id=#{id} AND visible=1 ORDER BY version DESC LIMIT 1")
658 def readwayquery_old(id,version,historic)
659 # Node handling on undelete (historic=false):
660 # - always use the node specified, even if it's moved
662 # Node handling on revert (historic=true):
663 # - if it's a visible node, use a new node id (i.e. not mucking up the old one)
664 # which means the SWF needs to allocate new ids
665 # - if it's an invisible node, we can reuse the old node id
667 # get node list from specified version of way,
668 # and the _current_ lat/long/tags of each node
670 row=ActiveRecord::Base.connection.select_one("SELECT timestamp FROM ways WHERE version=#{version} AND id=#{id}")
671 waytime=row['timestamp']
674 SELECT cn.id,visible,latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,tags
675 FROM way_nodes wn,current_nodes cn
676 WHERE wn.version=#{version}
681 rows=ActiveRecord::Base.connection.select_all(sql)
683 # if historic (full revert), get the old version of each node
684 # - if it's in another way now, generate a new id
685 # - if it's not in another way, use the old ID
687 rows.each_index do |i|
689 SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,tags,cwn.id AS currentway
691 LEFT JOIN current_way_nodes cwn
693 WHERE n.id=#{rows[i]['id']}
694 AND n.timestamp<="#{waytime}"
696 ORDER BY n.timestamp DESC
699 row=ActiveRecord::Base.connection.select_one(sql)
701 nx=row['longitude'].to_f
702 ny=row['latitude'].to_f
703 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
704 rows[i]['longitude']=nx
705 rows[i]['latitude' ]=ny
706 rows[i]['tags' ]=row['tags']
713 def createuniquenodes(way,uqn_name,nodelist)
714 # Find nodes which appear in this way but no others
716 CREATE TEMPORARY TABLE #{uqn_name}
718 FROM (SELECT DISTINCT node_id FROM current_way_nodes
720 LEFT JOIN current_way_nodes b
721 ON b.node_id=a.node_id
723 WHERE b.node_id IS NULL
725 unless nodelist.empty? then
726 sql+="AND a.node_id NOT IN ("+nodelist.join(',')+")"
728 ActiveRecord::Base.connection.execute(sql)
733 # ====================================================================
735 # deleteuniquenoderelations(uqn_name,uid,db_now)
736 # deleteitemrelations(way|node,'way'|'node',uid,db_now)
738 def deleteuniquenoderelations(uqn_name,uid,db_now)
740 SELECT node_id,cr.id FROM #{uqn_name},current_relation_members crm,current_relations cr
741 WHERE crm.member_id=node_id
742 AND crm.member_type='node'
747 relnodes=ActiveRecord::Base.connection.select_all(sql)
749 removefromrelation(a['node_id'],'node',a['id'],uid,db_now)
753 def deleteitemrelations(objid,type,uid,db_now)
755 SELECT cr.id FROM current_relation_members crm,current_relations cr
756 WHERE crm.member_id=#{objid}
757 AND crm.member_type='#{type}'
762 relways=ActiveRecord::Base.connection.select_all(sql)
764 removefromrelation(objid,type,a['id'],uid,db_now)
768 def removefromrelation(objid,type,relation,uid,db_now)
769 rver=ActiveRecord::Base.connection.insert("INSERT INTO relations (id,user_id,timestamp,visible) VALUES (#{relation},#{uid},#{db_now},1)")
772 INSERT INTO relation_tags (id,k,v,version)
773 SELECT id,k,v,#{rver} FROM current_relation_tags
776 ActiveRecord::Base.connection.insert(tagsql)
779 INSERT INTO relation_members (id,member_type,member_id,member_role,version)
780 SELECT id,member_type,member_id,member_role,#{rver} FROM current_relation_members
782 AND (member_id!=#{objid} OR member_type!='#{type}')
784 ActiveRecord::Base.connection.insert(membersql)
786 ActiveRecord::Base.connection.update("UPDATE current_relations SET user_id=#{uid},timestamp=#{db_now} WHERE id=#{relation}")
787 ActiveRecord::Base.connection.execute("DELETE FROM current_relation_members WHERE id=#{relation} AND member_type='#{type}' AND member_id=#{objid}")
791 a.gsub(/[\000-\037]/,"").gsub("'","''").gsub(92.chr) {92.chr+92.chr}
796 Tags.split(a) do |k, v|
797 tags[k.gsub(':','|')]=v
805 if v=='' then next end
806 if v[0,6]=='(type ' then next end
807 tags << [k.gsub('|',':'), v]
809 return Tags.join(tags)
813 if (token =~ /^(.+)\+(.+)$/) then
814 user = User.authenticate(:username => $1, :password => $2)
816 user = User.authenticate(:token => token)
819 return user ? user.id : nil;
824 # ====================================================================
825 # AMF read subroutines
827 # ----- getint return two-byte integer
828 # ----- getlong return four-byte long
829 # ----- getstring return string with two-byte length
830 # ----- getdouble return eight-byte double-precision float
831 # ----- getobject return object/hash
832 # ----- getarray return numeric array
839 ((s.getc*256+s.getc)*256+s.getc)*256+s.getc
843 len=s.getc*256+s.getc
848 a=s.read(8).unpack('G') # G big-endian, E little-endian
863 while (key=getstring(s))
864 if (key=='') then break end
867 s.getc # skip the 9 'end of object' value
871 # ----- getvalue parse and get value
875 when 0; return getdouble(s) # number
876 when 1; return s.getc # boolean
877 when 2; return getstring(s) # string
878 when 3; return getobject(s) # object/hash
879 when 5; return nil # null
880 when 6; return nil # undefined
881 when 8; s.read(4) # mixedArray
882 return getobject(s) # |
883 when 10;return getarray(s) # array
884 else; return nil # error
888 # ====================================================================
889 # AMF write subroutines
891 # ----- putdata envelope data into AMF writeable form
892 # ----- encodevalue pack variables as AMF
895 d =encodestring(index+"/onResult")
896 d+=encodestring("null")
904 a=10.chr+encodelong(n.length)
912 a+=encodestring(k)+encodevalue(v)
916 2.chr+encodestring(n)
917 when 'Bignum','Fixnum','Float'
918 0.chr+encodedouble(n)
922 RAILS_DEFAULT_LOGGER.error("Unexpected Ruby type for AMF conversion: "+n.class.to_s)
926 # ----- encodestring encode string with two-byte length
927 # ----- encodedouble encode number as eight-byte double precision float
928 # ----- encodelong encode number as four-byte long
931 a,b=n.size.divmod(256)
943 # ====================================================================
944 # Co-ordinate conversion
946 def lat2coord(a,basey,masterscale)
947 -(lat2y(a)-basey)*masterscale+250
950 def long2coord(a,baselong,masterscale)
951 (a-baselong)*masterscale+350
955 180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2))
958 def coord2lat(a,masterscale,basey)
959 y2lat((a-250)/-masterscale+basey)
962 def coord2long(a,masterscale,baselong)
963 (a-350)/masterscale+baselong
967 180/Math::PI * (2*Math.atan(Math.exp(a*Math::PI/180))-Math::PI/2)