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
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]
- results[index]=AMF.putdata(index,r)
+ 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))
RAILS_DEFAULT_LOGGER.info(" Message: whichways, bbox=#{xmin},#{ymin},#{xmax},#{ymax}")
# find the way ids in an area
- nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax,:conditions => "visible = 1", :include => :way_nodes)
- waynodes_in_area = nodes_in_area.collect {|node| node.way_nodes }.flatten
- ways = waynodes_in_area.collect {|way_node| way_node.id[0]}.uniq
+ 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
# find the node ids in an area that aren't part of ways
- node_ids_in_area = nodes_in_area.collect {|node| node.id}.uniq
- node_ids_used_in_ways = waynodes_in_area.collect {|way_node| way_node.node_id}.uniq
- node_ids_not_used_in_area = node_ids_in_area - node_ids_used_in_ways
- nodes_not_used_in_area = Node.find(node_ids_not_used_in_area)
- points = nodes_not_used_in_area.collect {|n| [n.id, n.lon_potlatch(baselong,masterscale), n.lat_potlatch(basey,masterscale), n.tags_as_hash] }
+ 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] }
- [ways,points]
+ # 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
+
+ [way_ids,points,relation_ids]
end
# ----- whichways_deleted
RAILS_DEFAULT_LOGGER.info(" Message: getway, id=#{wayid}")
- way = Way.find_eager(wayid)
+ # 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.way_nodes.each do |way_node|
- node = way_node.node # get the node record
+ 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
[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)
+
+ [relid,rel.tags,rel.members]#nodes,ways]
+ end
+
+ # ----- 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
+
+ [0,relid,rel.id]
+ end
+
# ----- putway
# saves a way to the database
# in: [0] user token (string),
RAILS_DEFAULT_LOGGER.info(" Message: putway, id=#{originalway}")
- # -- Temporary check for null IDs
+ # -- 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
n = Node.find(id.to_i)
if n
- return [n.id, n.long_potlatch(baselong,masterscale), n.lat_potlatch(basey,masterscale), n.tags_as_hash]
+ return [n.id, n.lon_potlatch(baselong,masterscale), n.lat_potlatch(basey,masterscale), n.tags_as_hash]
else
return [nil,nil,nil,'']
end
# 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)
- def deleteway(args) #:doc:
- usertoken,way=args
-
- RAILS_DEFAULT_LOGGER.info(" Message: deleteway, id=#{way}")
+ 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
- way=way.to_i
- 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
- 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
+ # FIXME
+ # the next bit removes the way from any relations
+ # the delete_with_relations_and_nodes_and_history method should do this,
+ # but at present it just throws a 'precondition failed'
+ way=way.to_i
+ db_now='@now'+(rand*100).to_i.to_s+uid.to_s+id.to_i.abs.to_s+Time.new.to_i.to_s
+ db_uqn='unin'+(rand*100).to_i.to_s+uid.to_s+way.to_i.abs.to_s+Time.new.to_i.to_s
ActiveRecord::Base.connection.execute("SET #{db_now}=NOW()")
-
- # - delete any otherwise unused nodes
-
- createuniquenodes(way,db_uqn,[])
-
- # unless (preserve.empty?) then
- # ActiveRecord::Base.connection.execute("DELETE FROM #{db_uqn} WHERE node_id IN ("+preserve.join(',')+")")
- # 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)
-
- 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)
-
- deleteuniquenoderelations(db_uqn,uid,db_now)
+ createuniquenodes(way,db_uqn,[])
+ deleteuniquenoderelations(db_uqn,uid,db_now)
+ deleteitemrelations(way_id,'way',uid,db_now)
ActiveRecord::Base.connection.execute("DROP TEMPORARY TABLE #{db_uqn}")
+ # end of FIXME
- # - 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_nodes WHERE id=#{way}")
- ActiveRecord::Base.connection.execute("DELETE FROM current_way_tags WHERE id=#{way}")
- deleteitemrelations(way,'way',uid,db_now)
- [0,way]
+ # now delete the way
+ user = User.find(uid)
+ way = Way.find(way_id)
+ way.delete_with_relations_and_nodes_and_history(user)
+ return [0,way_id]
end
+
def readwayquery(id,insistonvisible) #:doc:
sql=<<-EOF
SELECT latitude*0.0000001 AS latitude,longitude*0.0000001 AS longitude,current_nodes.id,tags,visible
ActiveRecord::Base.connection.select_all(sql)
end
+ # Get the latest version id of a way
def getlastversion(id,version) #:doc:
- row=ActiveRecord::Base.connection.select_one("SELECT version FROM ways WHERE id=#{id} AND visible=1 ORDER BY version DESC LIMIT 1")
- row['version']
+ old_way = OldWay.find(:first, :conditions => ['visible=1 AND id=?' , id], :order => 'version DESC')
+ old_way.version
end
def readwayquery_old(id,version,historic) #:doc:
# Co-ordinate conversion
def lat2coord(a,basey,masterscale) #:doc:
- -(lat2y(a)-basey)*masterscale+250
+ -(lat2y(a)-basey)*masterscale
end
def long2coord(a,baselong,masterscale) #:doc:
- (a-baselong)*masterscale+350
+ (a-baselong)*masterscale
end
def lat2y(a) #:doc:
end
def coord2lat(a,masterscale,basey) #:doc:
- y2lat((a-250)/-masterscale+basey)
+ y2lat(a/-masterscale+basey)
end
def coord2long(a,masterscale,baselong) #:doc:
- (a-350)/masterscale+baselong
+ a/masterscale+baselong
end
def y2lat(a)
projects / rails.git / blobdiff