1 # amf_controller is a semi-standalone API for Flash clients, particularly
2 # Potlatch. All interaction between Potlatch (as a .SWF application) and the
3 # OSM database takes place using this controller. Messages are
4 # encoded in the Actionscript Message Format (AMF).
6 # Helper functions are in /lib/potlatch.rb
8 # Author:: editions Systeme D / Richard Fairhurst 2004-2008
9 # Licence:: public domain.
11 # == General structure
13 # Apart from the amf_read and amf_write methods (which distribute the requests
14 # from the AMF message), each method generally takes arguments in the order
15 # they were sent by the Potlatch SWF. Do not assume typing has been preserved.
16 # Methods all return an array to the SWF.
20 # Note that this requires a patched version of composite_primary_keys 1.1.0
21 # (see http://groups.google.com/group/compositekeys/t/a00e7562b677e193)
22 # if you are to run with POTLATCH_USE_SQL=false .
26 # Any method that returns a status code (0 for ok) can also send:
27 # return(-1,"message") <-- just puts up a dialogue
28 # return(-2,"message") <-- also asks the user to e-mail me
30 # To write to the Rails log, use RAILS_DEFAULT_LOGGER.info("message").
32 class AmfController < ApplicationController
37 # Help methods for checking boundary sanity and area size
41 before_filter :check_write_availability
43 # Main AMF handlers: process the raw AMF string (using AMF library) and
44 # calls each action (private method) accordingly.
45 # ** FIXME: refactor to reduce duplication of code across read/write
48 req=StringIO.new(request.raw_post+0.chr)# Get POST data as request
49 # (cf http://www.ruby-forum.com/topic/122163)
50 req.read(2) # Skip version indicator and client ID
51 results={} # Results of each body
55 headers=AMF.getint(req) # Read number of headers
57 headers.times do # Read each header
58 name=AMF.getstring(req) # |
59 req.getc # | skip boolean
60 value=AMF.getvalue(req) # |
61 header["name"]=value # |
64 bodies=AMF.getint(req) # Read number of bodies
65 bodies.times do # Read each body
66 message=AMF.getstring(req) # | get message name
67 index=AMF.getstring(req) # | get index in response sequence
68 bytes=AMF.getlong(req) # | get total size in bytes
69 args=AMF.getvalue(req) # | get response (probably an array)
70 logger.info "Executing AMF #{message}:#{index}"
73 when 'getpresets'; results[index]=AMF.putdata(index,getpresets())
74 when 'whichways'; results[index]=AMF.putdata(index,whichways(*args))
75 when 'whichways_deleted'; results[index]=AMF.putdata(index,whichways_deleted(*args))
76 when 'getway'; results[index]=AMF.putdata(index,getway(args[0].to_i))
77 when 'getrelation'; results[index]=AMF.putdata(index,getrelation(args[0].to_i))
78 when 'getway_old'; results[index]=AMF.putdata(index,getway_old(args[0].to_i,args[1].to_i))
79 when 'getway_history'; results[index]=AMF.putdata(index,getway_history(args[0].to_i))
80 when 'getnode_history'; results[index]=AMF.putdata(index,getnode_history(args[0].to_i))
81 when 'findgpx'; results[index]=AMF.putdata(index,findgpx(*args))
82 when 'findrelations'; results[index]=AMF.putdata(index,findrelations(*args))
83 when 'getpoi'; results[index]=AMF.putdata(index,getpoi(*args))
86 logger.info("encoding AMF results")
91 req=StringIO.new(request.raw_post+0.chr)
94 renumberednodes={} # Shared across repeated putways
95 renumberedways={} # Shared across repeated putways
97 headers=AMF.getint(req) # Read number of headers
98 headers.times do # Read each header
99 name=AMF.getstring(req) # |
100 req.getc # | skip boolean
101 value=AMF.getvalue(req) # |
102 header["name"]=value # |
105 bodies=AMF.getint(req) # Read number of bodies
106 bodies.times do # Read each body
107 message=AMF.getstring(req) # | get message name
108 index=AMF.getstring(req) # | get index in response sequence
109 bytes=AMF.getlong(req) # | get total size in bytes
110 args=AMF.getvalue(req) # | get response (probably an array)
113 when 'putway'; r=putway(renumberednodes,*args)
115 if r[1] != r[2] then renumberedways[r[1]] = r[2] end
116 results[index]=AMF.putdata(index,r)
117 when 'putrelation'; results[index]=AMF.putdata(index,putrelation(renumberednodes, renumberedways, *args))
118 when 'deleteway'; results[index]=AMF.putdata(index,deleteway(*args))
119 when 'putpoi'; r=putpoi(*args)
120 if r[1] != r[2] then renumberednodes[r[1]] = r[2] end
121 results[index]=AMF.putdata(index,r)
122 when 'startchangeset'; results[index]=AMF.putdata(index,startchangeset(*args))
125 sendresponse(results)
130 # Start new changeset
132 def startchangeset(usertoken, cstags, closeid, closecomment)
133 user = getuser(usertoken)
134 if !user then return -1,"You are not logged in, so Potlatch can't write any changes to the database." end
136 # close previous changeset and add comment
138 cs = Changeset.find(closeid)
139 cs.set_closed_time_now
140 if cs.user_id!=user.id
141 return -2,"You cannot close that changeset because you're not the person who opened it."
142 elsif closecomment.empty?
145 cs.tags['comment']=closecomment
150 # open a new changeset
154 # smsm1 doesn't like the next two lines and thinks they need to be abstracted to the model more/better
155 cs.created_at = Time.now
156 cs.closed_at = cs.created_at + Changeset::IDLE_TIMEOUT
161 # Return presets (default tags, localisation etc.):
162 # uses POTLATCH_PRESETS global, set up in OSM::Potlatch.
164 def getpresets() #:doc:
165 return POTLATCH_PRESETS
169 # Find all the ways, POI nodes (i.e. not part of ways), and relations
170 # in a given bounding box. Nodes are returned in full; ways and relations
173 # return is of the form:
175 # [[way_id, way_version], ...],
176 # [[node_id, lat, lon, [tags, ...], node_version], ...],
177 # [[rel_id, rel_version], ...]]
178 # where the ways are any visible ways which refer to any visible
179 # nodes in the bbox, nodes are any visible nodes in the bbox but not
180 # used in any way, rel is any relation which refers to either a way
181 # or node that we're returning.
182 def whichways(xmin, ymin, xmax, ymax) #:doc:
183 xmin -= 0.01; ymin -= 0.01
184 xmax += 0.01; ymax += 0.01
186 # check boundary is sane and area within defined
187 # see /config/application.yml
188 check_boundaries(xmin, ymin, xmax, ymax)
190 if POTLATCH_USE_SQL then
191 ways = sql_find_ways_in_area(xmin, ymin, xmax, ymax)
192 points = sql_find_pois_in_area(xmin, ymin, xmax, ymax)
193 relations = sql_find_relations_in_area_and_ways(xmin, ymin, xmax, ymax, ways.collect {|x| x[0]})
195 # find the way ids in an area
196 nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => ["current_nodes.visible = ?", true], :include => :ways)
197 ways = nodes_in_area.inject([]) { |sum, node|
198 visible_ways = node.ways.select { |w| w.visible? }
199 sum + visible_ways.collect { |w| [w.id,w.version] }
203 # find the node ids in an area that aren't part of ways
204 nodes_not_used_in_area = nodes_in_area.select { |node| node.ways.empty? }
205 points = nodes_not_used_in_area.collect { |n| [n.id, n.lon, n.lat, n.tags, n.version] }
207 # find the relations used by those nodes and ways
208 relations = Relation.find_for_nodes(nodes_in_area.collect { |n| n.id }, :conditions => {:visible => true}) +
209 Relation.find_for_ways(ways.collect { |w| w[0] }, :conditions => {:visible => true})
210 relations = relations.collect { |relation| [relation.id,relation.version] }.uniq
213 [0,ways, points, relations]
215 rescue Exception => err
216 [-2,"Sorry - I can't get the map for that area."]
219 # Find deleted ways in current bounding box (similar to whichways, but ways
220 # with a deleted node only - not POIs or relations).
222 def whichways_deleted(xmin, ymin, xmax, ymax) #:doc:
223 xmin -= 0.01; ymin -= 0.01
224 xmax += 0.01; ymax += 0.01
226 # check boundary is sane and area within defined
227 # see /config/application.yml
229 check_boundaries(xmin, ymin, xmax, ymax)
230 rescue Exception => err
231 return [-2,"Sorry - I can't get the map for that area."]
234 nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => ["current_ways.visible = ?", false], :include => :ways_via_history)
235 way_ids = nodes_in_area.collect { |node| node.ways_via_history_ids }.flatten.uniq
240 # Get a way including nodes and tags.
241 # Returns the way id, a Potlatch-style array of points, a hash of tags, and the version number.
243 def getway(wayid) #:doc:
244 if POTLATCH_USE_SQL then
245 points = sql_get_nodes_in_way(wayid)
246 tags = sql_get_tags_in_way(wayid)
247 version = sql_get_way_version(wayid)
249 # Ideally we would do ":include => :nodes" here but if we do that
250 # then rails only seems to return the first copy of a node when a
251 # way includes a node more than once
253 way = Way.find(wayid)
254 rescue ActiveRecord::RecordNotFound
258 # check case where way has been deleted or doesn't exist
259 return [wayid,[],{}] if way.nil? or !way.visible
261 points = way.nodes.collect do |node|
263 nodetags.delete('created_by')
264 [node.lon, node.lat, node.id, nodetags, node.version]
267 version = way.version
270 [wayid, points, tags, version]
273 # Get an old version of a way, and all constituent nodes.
275 # For undelete (version<0), always uses the most recent version of each node,
276 # even if it's moved. For revert (version >= 0), uses the node in existence
277 # at the time, generating a new id if it's still visible and has been moved/
283 # 2. array of points,
286 # 5. is this the current, visible version? (boolean)
289 # Should work by timestamp, not version (so that we can recover versions when
290 # a node has been changed, but not the enclosing way)
291 # Use strptime (http://www.ruby-doc.org/core/classes/DateTime.html) to
292 # to turn string back into timestamp.
294 def getway_old(id, version) #:doc:
296 old_way = OldWay.find(:first, :conditions => ['visible = ? AND id = ?', true, id], :order => 'version DESC')
297 points = old_way.get_nodes_undelete unless old_way.nil?
299 old_way = OldWay.find(:first, :conditions => ['id = ? AND version = ?', id, version])
300 points = old_way.get_nodes_revert unless old_way.nil?
304 return [-1, id, [], {}, -1,0]
307 old_way.tags['history'] = "Retrieved from v#{old_way.version}"
308 return [0, id, points, old_way.tags, old_way.version, (curway.version==old_way.version and curway.visible)]
312 # Find history of a way. Returns 'way', id, and
313 # an array of previous versions.
316 # Should look for changes in constituent nodes as well,
317 # and return timestamps.
318 # Heuristic: Find all nodes that have ever been part of the way;
319 # get a list of their revision dates; add revision dates of the way;
320 # sort and collapse list (to within 2 seconds); trim all dates before the
321 # start dateÊof the way.
323 def getway_history(wayid) #:doc:
325 # Find list of revision dates for way and all constituent nodes
327 Way.find(wayid).old_ways.collect do |a|
328 revdates.push(a.timestamp)
330 Node.find(n).old_nodes.collect do |o|
331 revdates.push(o.timestamp)
335 waycreated=revdates[0]
339 # Remove any dates (from nodes) before first revision date of way
340 revdates.delete_if { |d| d<waycreated }
341 # Remove any elements where 2 seconds doesn't elapse before next one
342 revdates.delete_if { |d| revdates.include?(d+1) or revdates.include?(d+2) }
344 RAILS_DEFAULT_LOGGER.info("** revision dates: #{revdates.inspect}")
345 RAILS_DEFAULT_LOGGER.info("** range: #{revdates[-1]-revdates[0]}")
348 history = Way.find(wayid).old_ways.reverse.collect do |old_way|
349 user_object = old_way.changeset.user
350 user = user_object.data_public? ? user_object.display_name : 'anonymous'
351 uid = user_object.data_public? ? user_object.id : 0
352 [old_way.version, old_way.timestamp.strftime("%d %b %Y, %H:%M"), old_way.visible ? 1 : 0, user, uid]
355 return ['way',wayid,history]
356 rescue ActiveRecord::RecordNotFound
357 return ['way', wayid, []]
361 # Find history of a node. Returns 'node', id, and
362 # an array of previous versions.
364 def getnode_history(nodeid) #:doc:
365 history = Node.find(nodeid).old_nodes.reverse.collect do |old_node|
366 user_object = old_node.changeset.user
367 user = user_object.data_public? ? user_object.display_name : 'anonymous'
368 uid = user_object.data_public? ? user_object.id : 0
369 [old_node.version, old_node.timestamp.strftime("%d %b %Y, %H:%M"), old_node.visible ? 1 : 0, user, uid]
372 return ['node',nodeid,history]
373 rescue ActiveRecord::RecordNotFound
374 return ['node', nodeid, []]
377 # Find GPS traces with specified name/id.
378 # Returns array listing GPXs, each one comprising id, name and description.
380 def findgpx(searchterm, usertoken)
381 user = getuser(usertoken)
382 if !uid then return -1,"You must be logged in to search for GPX traces." end
385 if searchterm.to_i>0 then
386 gpx = Trace.find(searchterm.to_i, :conditions => ["visible=? AND (public=? OR user_id=?)",true,true,user.id] )
388 gpxs.push([gpx.id, gpx.name, gpx.description])
391 Trace.find(:all, :limit => 21, :conditions => ["visible=? AND (public=? OR user_id=?) AND MATCH(name) AGAINST (?)",true,true,user.id,searchterm] ).each do |gpx|
392 gpxs.push([gpx.id, gpx.name, gpx.description])
398 # Get a relation with all tags and members.
402 # 2. list of members,
405 def getrelation(relid) #:doc:
407 rel = Relation.find(relid)
408 rescue ActiveRecord::RecordNotFound
409 return [relid, {}, []]
412 return [relid, {}, [], nil] if rel.nil? or !rel.visible
413 [relid, rel.tags, rel.members, rel.version]
416 # Find relations with specified name/id.
417 # Returns array of relations, each in same form as getrelation.
419 def findrelations(searchterm)
421 if searchterm.to_i>0 then
422 rel = Relation.find(searchterm.to_i)
423 if rel and rel.visible then
424 rels.push([rel.id, rel.tags, rel.members])
427 RelationTag.find(:all, :limit => 11, :conditions => ["match(v) against (?)", searchterm] ).each do |t|
428 if t.relation.visible then
429 rels.push([t.relation.id, t.relation.tags, t.relation.members])
439 # 1. original relation id (unchanged),
440 # 2. new relation id.
442 def putrelation(renumberednodes, renumberedways, usertoken, changeset, version, relid, tags, members, visible) #:doc:
443 user = getuser(usertoken)
444 if !user then return -1,"You are not logged in, so the relation could not be saved." end
447 visible = (visible.to_i != 0)
451 Relation.transaction do
452 # create a new relation, or find the existing one
454 relation = Relation.find(relid)
456 # We always need a new node, based on the data that has been sent to us
457 new_relation = Relation.new
459 # check the members are all positive, and correctly type
464 mid = renumberednodes[mid] if m[0] == 'node'
465 mid = renumberedways[mid] if m[0] == 'way'
468 typedmembers << [m[0], mid, m[2]]
472 # assign new contents
473 new_relation.members = typedmembers
474 new_relation.tags = tags
475 new_relation.visible = visible
476 new_relation.changeset_id = changeset
477 new_relation.version = version
481 # We're creating the node
482 new_relation.create_with_history(user)
484 # We're updating the node
485 relation.update_from(new_relation, user)
487 # We're deleting the node
488 relation.delete_with_history!(new_relation, user)
493 return [0, relid, new_relation.id, new_relation.version]
495 return [0, relid, relation.id, relation.version]
497 rescue OSM::APIChangesetAlreadyClosedError => ex
498 return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}."]
499 rescue OSM::APIVersionMismatchError => ex
500 # Really need to check to see whether this is a server load issue, and the
501 # last version was in the same changeset, or belongs to the same user, then
502 # we can return something different
503 return [-3, "You have taken too long to edit, please reload the area."]
504 rescue OSM::APIAlreadyDeletedError => ex
505 return [-1, "The object has already been deleted"]
506 rescue OSM::APIError => ex
507 # Some error that we don't specifically catch
508 return [-2, "Something really bad happened :-()"]
511 # Save a way to the database, including all nodes. Any nodes in the previous
512 # version and no longer used are deleted.
515 # 0. hash of renumbered nodes (added by amf_controller)
516 # 1. current user token (for authentication)
517 # 2. current changeset
520 # 5. list of nodes in way
521 # 6. hash of way tags
522 # 7. array of nodes to change (each one is [lon,lat,id,version,tags])
525 # 0. '0' (code for success),
526 # 1. original way id (unchanged),
528 # 3. hash of renumbered nodes (old id=>new id),
530 # 5. hash of node versions (node=>version)
532 def putway(renumberednodes, usertoken, changeset, wayversion, originalway, pointlist, attributes, nodes) #:doc:
536 user = getuser(usertoken)
537 if !user then return -1,"You are not logged in, so the way could not be saved." end
538 if pointlist.length < 2 then return -2,"Server error - way is only #{points.length} points long." end
540 originalway = originalway.to_i
541 pointlist.collect! {|a| a.to_i }
543 way=nil # this is returned, so scope it outside the transaction
547 # -- Get unique nodes
552 way = Way.find(originalway)
553 uniques = way.unshared_node_ids
556 #-- Update each changed node
563 if id == 0 then return -2,"Server error - node with id 0 found in way #{originalway}." end
564 if lat== 90 then return -2,"Server error - node with latitude -90 found in way #{originalway}." end
565 if renumberednodes[id] then id = renumberednodes[id] end
568 node.changeset_id = changeset
572 node.tags.delete('created_by')
573 node.version = version
575 # We're creating the node
576 node.create_with_history(user)
577 renumberednodes[id] = node.id
578 nodeversions[node.id] = node.version
580 # We're updating an existing node
581 previous=Node.find(id)
582 previous.update_from(node, user)
583 nodeversions[previous.id] = previous.version
587 # -- Delete any unique nodes no longer used
589 uniques=uniques-pointlist
593 new_node.changeset_id = changeset
594 new_node.version = version
595 node.delete_with_history!(new_node, user)
598 # -- Save revised way
600 pointlist.collect! {|a|
601 renumberednodes[a] ? renumberednodes[a]:a
604 new_way.tags = attributes
605 new_way.nds = pointlist
606 new_way.changeset_id = changeset
607 new_way.version = wayversion
609 new_way.create_with_history(user)
610 way=new_way # so we can get way.id and way.version
611 elsif way.tags!=attributes or way.nds!=pointlist or !way.visible?
612 way.update_from(new_way, user)
616 [0, originalway, way.id, renumberednodes, way.version, nodeversions]
617 rescue OSM::APIChangesetAlreadyClosedError => ex
618 return [-2, "Sorry, your changeset #{ex.changeset.id} has been closed (at #{ex.changeset.closed_at})."]
619 rescue OSM::APIVersionMismatchError => ex
620 # Really need to check to see whether this is a server load issue, and the
621 # last version was in the same changeset, or belongs to the same user, then
622 # we can return something different
623 return [-3, "Sorry, someone else has changed this way since you started editing - please reload the area"]
624 rescue OSM::APITooManyWayNodesError => ex
625 return [-1, "You have tried to upload a really long way with #{ex.provided} points: only #{ex.max} are allowed."]
626 rescue OSM::APIAlreadyDeletedError => ex
627 return [-1, "The object has already been deleted."]
628 rescue OSM::APIError => ex
629 # Some error that we don't specifically catch
630 return [-2, "Something really bad happened :-(."]
633 # Save POI to the database.
634 # Refuses save if the node has since become part of a way.
635 # Returns array with:
637 # 1. original node id (unchanged),
641 def putpoi(usertoken, changeset, version, id, lon, lat, tags, visible) #:doc:
642 user = getuser(usertoken)
643 if !user then return -1,"You are not logged in, so the point could not be saved." end
646 visible = (visible.to_i == 1)
654 unless node.ways.empty? then return -1,"The point has since become part of a way, so you cannot save it as a POI." end
655 deleteitemrelations(id, 'node')
658 # We always need a new node, based on the data that has been sent to us
661 new_node.changeset_id = changeset
662 new_node.version = version
667 # We're creating the node
668 new_node.create_with_history(user)
670 # We're updating the node
671 node.update_from(new_node, user)
673 # We're deleting the node
674 node.delete_with_history!(new_node, user)
679 return [0, id, new_node.id, new_node.version]
681 return [0, id, node.id, node.version]
683 rescue OSM::APIChangesetAlreadyClosedError => ex
684 return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}"]
685 rescue OSM::APIVersionMismatchError => ex
686 # Really need to check to see whether this is a server load issue, and the
687 # last version was in the same changeset, or belongs to the same user, then
688 # we can return something different
689 return [-3, "You have taken too long to edit, please reload the area"]
690 rescue OSM::APIAlreadyDeletedError => ex
691 return [-1, "The object has already been deleted"]
692 rescue OSM::APIError => ex
693 # Some error that we don't specifically catch
694 return [-2, "Something really bad happened :-()"]
697 # Read POI from database
698 # (only called on revert: POIs are usually read by whichways).
700 # Returns array of id, long, lat, hash of tags, version.
702 def getpoi(id,version) #:doc:
704 n = OldNode.find(id, :conditions=>['version=?',version])
710 return [n.id, n.lon, n.lat, n.tags, n.version]
712 return [nil, nil, nil, {}, nil]
716 # Delete way and all constituent nodes. Also removes from any relations.
720 # * the id of the way to change
721 # * the version of the way that was downloaded
722 # * a hash of the id and versions of all the nodes that are in the way, if any
723 # of the nodes have been changed by someone else then, there is a problem!
724 # Returns 0 (success), unchanged way id.
726 def deleteway(usertoken, changeset_id, way_id, way_version, node_id_version) #:doc:
727 user = getuser(usertoken)
728 unless user then return -1,"You are not logged in, so the way could not be deleted." end
731 # Need a transaction so that if one item fails to delete, the whole delete fails.
734 # FIXME: would be good not to make two history entries when removing
735 # two nodes from the same relation
736 old_way = Way.find(way_id)
737 #old_way.unshared_node_ids.each do |n|
738 # deleteitemrelations(n, 'node')
740 #deleteitemrelations(way_id, 'way')
743 #way.delete_with_relations_and_nodes_and_history(changeset_id.to_i)
744 old_way.unshared_node_ids.each do |node_id|
746 node = Node.find(node_id)
747 delete_node = Node.new
748 delete_node.version = node_id_version[node_id]
749 node.delete_with_history!(delete_node, user)
753 delete_way.version = way_version
754 old_way.delete_with_history!(delete_way, user)
757 rescue OSM::APIChangesetAlreadyClosedError => ex
758 return [-1, "The changeset #{ex.changeset.id} was closed at #{ex.changeset.closed_at}"]
759 rescue OSM::APIVersionMismatchError => ex
760 # Really need to check to see whether this is a server load issue, and the
761 # last version was in the same changeset, or belongs to the same user, then
762 # we can return something different
763 return [-3, "You have taken too long to edit, please reload the area"]
764 rescue OSM::APIAlreadyDeletedError => ex
765 return [-1, "The object has already been deleted"]
766 rescue OSM::APIError => ex
767 # Some error that we don't specifically catch
768 return [-2, "Something really bad happened :-()"]
772 # ====================================================================
775 # delete a way and its nodes that aren't part of other ways
776 # this functionality used to be in the model, however it is specific to amf
778 #def delete_unshared_nodes(changeset_id, way_id)
780 # Remove a node or way from all relations
781 # FIXME needs version, changeset, and user
782 # Fixme make sure this doesn't depend on anything and delete this, as potlatch
783 # itself should remove the relations first
784 def deleteitemrelations(objid, type, version) #:doc:
785 relations = RelationMember.find(:all,
786 :conditions => ['member_type = ? and member_id = ?', type, objid],
787 :include => :relation).collect { |rm| rm.relation }.uniq
789 relations.each do |rel|
790 rel.members.delete_if { |x| x[0] == type and x[1] == objid }
791 # FIXME need to create the new relation
792 new_rel = Relation.new
793 new_rel.version = version
794 new_rel.members = members
795 new_rel.changeset = changeset
796 rel.delete_with_history(new_rel, user)
800 # Break out node tags into a hash
801 # (should become obsolete as of API 0.6)
803 def tagstring_to_hash(a) #:doc:
805 Tags.split(a) do |k, v|
812 # (can also be of form user:pass)
813 # When we are writing to the api, we need the actual user model,
814 # not just the id, hence this abstraction
816 def getuser(token) #:doc:
817 if (token =~ /^(.+)\:(.+)$/) then
818 user = User.authenticate(:username => $1, :password => $2)
820 user = User.authenticate(:token => token)
827 def sendresponse(results)
828 a,b=results.length.divmod(256)
829 render :content_type => "application/x-amf", :text => proc { |response, output|
830 # ** move amf writing loop into here -
831 # basically we read the messages in first (into an array of some sort),
832 # then iterate through that array within here, and do all the AMF writing
833 output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr
834 results.each do |k,v|
841 # ====================================================================
842 # Alternative SQL queries for getway/whichways
844 def sql_find_ways_in_area(xmin,ymin,xmax,ymax)
846 SELECT DISTINCT current_ways.id AS wayid,current_ways.version AS version
847 FROM current_way_nodes
848 INNER JOIN current_nodes ON current_nodes.id=current_way_nodes.node_id
849 INNER JOIN current_ways ON current_ways.id =current_way_nodes.id
850 WHERE current_nodes.visible=TRUE
851 AND current_ways.visible=TRUE
852 AND #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
854 return ActiveRecord::Base.connection.select_all(sql).collect { |a| [a['wayid'].to_i,a['version'].to_i] }
857 def sql_find_pois_in_area(xmin,ymin,xmax,ymax)
860 SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lon,current_nodes.version
862 LEFT OUTER JOIN current_way_nodes cwn ON cwn.node_id=current_nodes.id
863 WHERE current_nodes.visible=TRUE
865 AND #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
867 ActiveRecord::Base.connection.select_all(sql).each do |row|
869 ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_node_tags WHERE id=#{row['id']}").each do |n|
870 poitags[n['k']]=n['v']
872 pois << [row['id'].to_i, row['lon'].to_f, row['lat'].to_f, poitags, row['version'].to_i]
877 def sql_find_relations_in_area_and_ways(xmin,ymin,xmax,ymax,way_ids)
878 # ** It would be more Potlatchy to get relations for nodes within ways
879 # during 'getway', not here
881 SELECT DISTINCT cr.id AS relid,cr.version AS version
882 FROM current_relations cr
883 INNER JOIN current_relation_members crm ON crm.id=cr.id
884 INNER JOIN current_nodes cn ON crm.member_id=cn.id AND crm.member_type='node'
885 WHERE #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "cn.")}
887 unless way_ids.empty?
890 SELECT DISTINCT cr.id AS relid,cr.version AS version
891 FROM current_relations cr
892 INNER JOIN current_relation_members crm ON crm.id=cr.id
893 WHERE crm.member_type='way'
894 AND crm.member_id IN (#{way_ids.join(',')})
897 return ActiveRecord::Base.connection.select_all(sql).collect { |a| [a['relid'].to_i,a['version'].to_i] }
900 def sql_get_nodes_in_way(wayid)
903 SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,current_nodes.id
904 FROM current_way_nodes,current_nodes
905 WHERE current_way_nodes.id=#{wayid.to_i}
906 AND current_way_nodes.node_id=current_nodes.id
907 AND current_nodes.visible=TRUE
910 ActiveRecord::Base.connection.select_all(sql).each do |row|
912 ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_node_tags WHERE id=#{row['id']}").each do |n|
913 nodetags[n['k']]=n['v']
915 nodetags.delete('created_by')
916 points << [row['lon'].to_f,row['lat'].to_f,row['id'].to_i,nodetags]
921 def sql_get_tags_in_way(wayid)
923 ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_way_tags WHERE id=#{wayid.to_i}").each do |row|
924 tags[row['k']]=row['v']
929 def sql_get_way_version(wayid)
930 ActiveRecord::Base.connection.select_one("SELECT version FROM current_ways WHERE id=#{wayid.to_i}")