# from the AMF message), each method generally takes arguments in the order
# they were sent by the Potlatch SWF. Do not assume typing has been preserved.
# Methods all return an array to the SWF.
+#
+# == API 0.6
+#
+# Note that this requires a patched version of composite_primary_keys 1.1.0
+# (see http://groups.google.com/group/compositekeys/t/a00e7562b677e193)
+# if you are to run with POTLATCH_USE_SQL=false .
#
# == Debugging
#
when 'getway_old'; results[index]=AMF.putdata(index,getway_old(args[0].to_i,args[1].to_i))
when 'getway_history'; results[index]=AMF.putdata(index,getway_history(args[0].to_i))
when 'getnode_history'; results[index]=AMF.putdata(index,getnode_history(args[0].to_i))
+ when 'findgpx'; results[index]=AMF.putdata(index,findgpx(*args))
when 'findrelations'; results[index]=AMF.putdata(index,findrelations(*args))
when 'getpoi'; results[index]=AMF.putdata(index,getpoi(*args))
end
end
results[index]=AMF.putdata(index,r)
when 'putrelation'; results[index]=AMF.putdata(index,putrelation(renumberednodes, renumberedways, *args))
- when 'deleteway'; results[index]=AMF.putdata(index,deleteway(args[0],args[1].to_i))
+ when 'deleteway'; results[index]=AMF.putdata(index,deleteway(*args))
when 'putpoi'; results[index]=AMF.putdata(index,putpoi(*args))
+ when 'startchangeset'; results[index]=AMF.putdata(index,startchangeset(*args))
end
end
sendresponse(results)
private
+ # Start new changeset
+
+ def startchangeset(usertoken, cstags, closeid, closecomment)
+ uid = getuserid(usertoken)
+ if !uid then return -1,"You are not logged in, so Potlatch can't write any changes to the database." end
+
+ # close previous changeset and add comment
+ if closeid
+ cs = Changeset.find(closeid)
+ cs.open = false
+ if closecomment.empty?
+ cs.save!
+ else
+ cs.tags['comment']=closecomment
+ cs.save_with_tags!
+ end
+ end
+
+ # open a new changeset
+ cs = Changeset.new
+ cs.tags = cstags
+ cs.user_id = uid
+ cs.created_at = Time.now
+ cs.save_with_tags!
+ return [0,cs.id]
+ end
+
# Return presets (default tags, localisation etc.):
# uses POTLATCH_PRESETS global, set up in OSM::Potlatch.
begin
check_boundaries(xmin, ymin, xmax, ymax)
rescue Exception => err
- # FIXME: report an error rather than just return an empty result
- return [[],[],[]]
+ return [-2,"Sorry - I can't get the map for that area."]
end
if POTLATCH_USE_SQL then
- way_ids = sql_find_way_ids_in_area(xmin, ymin, xmax, ymax)
+ ways = sql_find_ways_in_area(xmin, ymin, xmax, ymax)
points = sql_find_pois_in_area(xmin, ymin, xmax, ymax)
- relation_ids = sql_find_relations_in_area_and_ways(xmin, ymin, xmax, ymax, way_ids)
+ relations = sql_find_relations_in_area_and_ways(xmin, ymin, xmax, ymax, ways.collect {|x| x[0]})
else
# find the way ids in an area
nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => ["current_nodes.visible = ?", true], :include => :ways)
- way_ids = nodes_in_area.collect { |node| node.way_ids }.flatten.uniq
+ ways = nodes_in_area.collect { |node|
+ node.ways.collect { |w| [w.id,w.version] }.flatten
+ }.uniq
+ ways.delete([])
# 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, n.lat, n.tags_as_hash] }
+ points = nodes_not_used_in_area.collect { |n| [n.id, n.lon, n.lat, n.tags] }
# find the relations used by those nodes and ways
relations = Relation.find_for_nodes(nodes_in_area.collect { |n| n.id }, :conditions => {:visible => true}) +
- Relation.find_for_ways(way_ids, :conditions => {:visible => true})
- relation_ids = relations.collect { |relation| relation.id }.uniq
+ Relation.find_for_ways(ways.collect { |w| w[0] }, :conditions => {:visible => true})
+ relations = relations.collect { |relation| [relation.id,relation.version] }.uniq
end
- [way_ids, points, relation_ids]
+ [0,ways, points, relations]
end
# Find deleted ways in current bounding box (similar to whichways, but ways
begin
check_boundaries(xmin, ymin, xmax, ymax)
rescue Exception => err
- # FIXME: report an error rather than just return an empty result
- return [[]]
+ return [-2,"Sorry - I can't get the map for that area."]
end
nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => ["current_ways.visible = ?", false], :include => :ways_via_history)
way_ids = nodes_in_area.collect { |node| node.ways_via_history_ids }.flatten.uniq
- [way_ids]
+ [0,way_ids]
end
# Get a way including nodes and tags.
- # Returns 0 (success), a Potlatch-style array of points, and a hash of tags.
+ # Returns the way id, a Potlatch-style array of points, a hash of tags, and the version number.
def getway(wayid) #:doc:
if POTLATCH_USE_SQL then
points = sql_get_nodes_in_way(wayid)
tags = sql_get_tags_in_way(wayid)
+ version = sql_get_way_version(wayid)
else
# 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
return [wayid,[],{}] if way.nil? or !way.visible
points = way.nodes.collect do |node|
- nodetags=node.tags_as_hash
+ nodetags=node.tags
nodetags.delete('created_by')
[node.lon, node.lat, node.id, nodetags]
end
tags = way.tags
+ version = way.version
end
- [wayid, points, tags]
+ [wayid, points, tags, version]
end
# Get an old version of a way, and all constituent nodes.
# even if it's moved. For revert (version >= 0), uses the node in existence
# at the time, generating a new id if it's still visible and has been moved/
# retagged.
+ #
+ # Returns:
+ # 0. success code,
+ # 1. id,
+ # 2. array of points,
+ # 3. hash of tags,
+ # 4. version,
+ # 5. is this the current, visible version? (boolean)
def getway_old(id, version) #:doc:
if version < 0
end
if old_way.nil?
- return [0, id, [], {}, -1]
+ return [-1, id, [], {}, -1,0]
else
+ curway=Way.find(id)
old_way.tags['history'] = "Retrieved from v#{old_way.version}"
- return [0, id, points, old_way.tags, old_way.version]
+ return [0, id, points, old_way.tags, old_way.version, (curway.version==old_way.version and curway.visible)]
end
end
# an array of previous versions.
def getway_history(wayid) #:doc:
- history = Way.find(wayid).old_ways.reverse.collect do |old_way|
- user = old_way.user.data_public? ? old_way.user.display_name : 'anonymous'
- uid = old_way.user.data_public? ? old_way.user.id : 0
- [old_way.version, old_way.timestamp.strftime("%d %b %Y, %H:%M"), old_way.visible ? 1 : 0, user, uid]
- end
+ begin
+ history = Way.find(wayid).old_ways.reverse.collect do |old_way|
+ user_object = old_way.changeset.user
+ user = user_object.data_public? ? user_object.display_name : 'anonymous'
+ uid = user_object.data_public? ? user_object.id : 0
+ [old_way.version, old_way.timestamp.strftime("%d %b %Y, %H:%M"), old_way.visible ? 1 : 0, user, uid]
+ end
- ['way',wayid,history]
+ return ['way',wayid,history]
+ rescue ActiveRecord::RecordNotFound
+ return ['way', wayid, []]
+ end
end
# Find history of a node. Returns 'node', id, and
# an array of previous versions.
def getnode_history(nodeid) #:doc:
- history = Node.find(nodeid).old_nodes.reverse.collect do |old_node|
- user = old_node.user.data_public? ? old_node.user.display_name : 'anonymous'
- uid = old_node.user.data_public? ? old_node.user.id : 0
- [old_node.timestamp.to_i, old_node.timestamp.strftime("%d %b %Y, %H:%M"), old_node.visible ? 1 : 0, user, uid]
- end
+ begin
+ history = Node.find(nodeid).old_nodes.reverse.collect do |old_node|
+ user_object = old_node.changeset.user
+ user = user_object.data_public? ? user_object.display_name : 'anonymous'
+ uid = user_object.data_public? ? user_object.id : 0
+ [old_node.version, old_node.timestamp.strftime("%d %b %Y, %H:%M"), old_node.visible ? 1 : 0, user, uid]
+ end
- ['node',nodeid,history]
+ return ['node',nodeid,history]
+ rescue ActiveRecord::RecordNotFound
+ return ['node', nodeid, []]
+ end
+ end
+
+ # Find GPS traces with specified name/id.
+ # Returns array listing GPXs, each one comprising id, name and description.
+
+ def findgpx(searchterm, usertoken)
+ uid = getuserid(usertoken)
+ if !uid then return -1,"You must be logged in to search for GPX traces." end
+
+ gpxs = []
+ if searchterm.to_i>0 then
+ gpx = Trace.find(searchterm.to_i, :conditions => ["visible=? AND (public=? OR user_id=?)",true,true,uid] )
+ if gpx then
+ gpxs.push([gpx.id, gpx.name, gpx.description])
+ end
+ else
+ Trace.find(:all, :limit => 21, :conditions => ["visible=? AND (public=? OR user_id=?) AND MATCH(name) AGAINST (?)",true,true,uid,searchterm] ).each do |gpx|
+ gpxs.push([gpx.id, gpx.name, gpx.description])
+ end
+ end
+ gpxs
end
# Get a relation with all tags and members.
# Returns:
# 0. relation id,
# 1. hash of tags,
- # 2. list of members.
+ # 2. list of members,
+ # 3. version.
def getrelation(relid) #:doc:
begin
return [relid, {}, []]
end
- return [relid, {}, []] if rel.nil? or !rel.visible
-
- [relid, rel.tags, rel.members]
+ return [relid, {}, [], nil] if rel.nil? or !rel.visible
+ [relid, rel.tags, rel.members, rel.version]
end
# Find relations with specified name/id.
# 1. original relation id (unchanged),
# 2. new relation id.
- def putrelation(renumberednodes, renumberedways, usertoken, relid, tags, members, visible) #:doc:
+ def putrelation(renumberednodes, renumberedways, usertoken, changeset, relid, tags, members, visible) #:doc:
uid = getuserid(usertoken)
if !uid then return -1,"You are not logged in, so the relation could not be saved." end
# create a new relation, or find the existing one
if relid <= 0
rel = Relation.new
+ rel.version = 0
else
rel = Relation.find(relid)
end
rel.members = typedmembers
rel.tags = tags
rel.visible = visible
- rel.user_id = uid
+ rel.changeset_id = changeset
# check it then save it
# BUG: the following is commented out because it always fails on my
# 0. '0' (code for success),
# 1. original way id (unchanged),
# 2. new way id,
- # 3. hash of renumbered nodes (old id=>new id)
+ # 3. hash of renumbered nodes (old id=>new id),
+ # 4. version
- def putway(renumberednodes, usertoken, originalway, points, attributes) #:doc:
+ def putway(renumberednodes, usertoken, changeset, originalway, points, attributes) #:doc:
# -- Initialise and carry out checks
if originalway < 0
way = Way.new
+ way.version = 0 # otherwise +=1 breaks
uniques = []
else
way = Way.find(originalway)
elsif id < 0
# Create new node
node = Node.new
+ node.version = 0 # otherwise +=1 breaks
savenode = true
else
node = Node.find(id)
- nodetags=node.tags_as_hash
+ nodetags=node.tags
nodetags.delete('created_by')
if !fpcomp(lat, node.lat) or !fpcomp(lon, node.lon) or
n[4] != nodetags or !node.visible?
end
if savenode
- node.user_id = uid
+ node.changeset_id = changeset
node.lat = lat
node.lon = lon
- node.tags = Tags.join(n[4])
+ node.tags = n[4]
node.visible = true
node.save_with_history!
deleteitemrelations(n, 'node')
node = Node.find(n)
- node.user_id = uid
+ node.changeset_id = changeset
node.visible = false
node.save_with_history!
end
# -- Save revised way
- way.tags = attributes
- way.nds = nodes
- way.user_id = uid
- way.visible = true
- way.save_with_history!
+ if way.tags!=attributes or way.nds!=nodes or !way.visible?
+ way.tags = attributes
+ way.nds = nodes
+ way.changeset_id = changeset
+ way.visible = true
+ way.save_with_history!
+ end
- [0, originalway, way.id, renumberednodes]
+ [0, originalway, way.id, renumberednodes, way.version]
end
# Save POI to the database.
# Returns:
# 0. 0 (success),
# 1. original node id (unchanged),
- # 2. new node id.
+ # 2. new node id,
+ # 3. version.
- def putpoi(usertoken, id, lon, lat, tags, visible) #:doc:
+ def putpoi(usertoken, changeset, id, lon, lat, tags, visible) #:doc:
uid = getuserid(usertoken)
if !uid then return -1,"You are not logged in, so the point could not be saved." end
end
else
node = Node.new
+ node.version = 0
end
- node.user_id = uid
+ node.changeset_id = changeset
node.lat = lat
node.lon = lon
- node.tags = Tags.join(tags)
+ node.tags = tags
node.visible = visible
node.save_with_history!
- [0, id, node.id]
+ [0, id, node.id, node.version]
end
# Read POI from database
# (only called on revert: POIs are usually read by whichways).
#
- # Returns array of id, long, lat, hash of tags.
+ # Returns array of id, long, lat, hash of tags, version.
- def getpoi(id,timestamp) #:doc:
- if timestamp>0 then
- n = OldNode.find(id, :conditions=>['UNIX_TIMESTAMP(timestamp)=?',timestamp])
+ def getpoi(id,version) #:doc:
+ if version>0 then
+ n = OldNode.find(id, :conditions=>['version=?',version])
else
n = Node.find(id)
end
if n
- return [n.id, n.lon, n.lat, n.tags_as_hash]
+ return [n.id, n.lon, n.lat, n.tags, n.version]
else
- return [nil, nil, nil, '']
+ return [nil, nil, nil, {}, nil]
end
end
# Delete way and all constituent nodes. Also removes from any relations.
# Returns 0 (success), unchanged way id.
- def deleteway(usertoken, way_id) #:doc:
- uid = getuserid(usertoken)
- if !uid then return -1,"You are not logged in, so the way could not be deleted." end
+ def deleteway(usertoken, changeset_id, way_id) #:doc:
+ if !getuserid(usertoken) then return -1,"You are not logged in, so the way could not be deleted." end
+
+ way_id = way_id.to_i
# FIXME: would be good not to make two history entries when removing
# two nodes from the same relation
- user = User.find(uid)
way = Way.find(way_id)
way.unshared_node_ids.each do |n|
deleteitemrelations(n, 'node')
end
deleteitemrelations(way_id, 'way')
- way.delete_with_relations_and_nodes_and_history(user)
+ way.delete_with_relations_and_nodes_and_history(changeset_id.to_i)
[0, way_id]
end
end
# Authenticate token
- # (could be removed if no-one uses the username+password form)
+ # (can also be of form user:pass)
def getuserid(token) #:doc:
- if (token =~ /^(.+)\+(.+)$/) then
+ if (token =~ /^(.+)\:(.+)$/) then
user = User.authenticate(:username => $1, :password => $2)
else
user = User.authenticate(:token => token)
def sendresponse(results)
a,b=results.length.divmod(256)
render :content_type => "application/x-amf", :text => proc { |response, output|
+ # ** move amf writing loop into here -
+ # basically we read the messages in first (into an array of some sort),
+ # then iterate through that array within here, and do all the AMF writing
output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr
results.each do |k,v|
output.write(v)
# ====================================================================
# Alternative SQL queries for getway/whichways
- def sql_find_way_ids_in_area(xmin,ymin,xmax,ymax)
+ def sql_find_ways_in_area(xmin,ymin,xmax,ymax)
sql=<<-EOF
- SELECT DISTINCT current_way_nodes.id AS wayid
+ SELECT DISTINCT current_ways.id AS wayid,current_ways.version AS version
FROM current_way_nodes
INNER JOIN current_nodes ON current_nodes.id=current_way_nodes.node_id
INNER JOIN current_ways ON current_ways.id =current_way_nodes.id
AND current_ways.visible=TRUE
AND #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
EOF
- return ActiveRecord::Base.connection.select_all(sql).collect { |a| a['wayid'].to_i }
+ return ActiveRecord::Base.connection.select_all(sql).collect { |a| [a['wayid'].to_i,a['version'].to_i] }
end
def sql_find_pois_in_area(xmin,ymin,xmax,ymax)
+ pois=[]
sql=<<-EOF
- SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lon,current_nodes.tags
+ SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lon,current_nodes.version
FROM current_nodes
LEFT OUTER JOIN current_way_nodes cwn ON cwn.node_id=current_nodes.id
WHERE current_nodes.visible=TRUE
AND cwn.id IS NULL
AND #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
EOF
- return ActiveRecord::Base.connection.select_all(sql).collect { |n| [n['id'].to_i,n['lon'].to_f,n['lat'].to_f,tagstring_to_hash(n['tags'])] }
+ ActiveRecord::Base.connection.select_all(sql).each do |row|
+ poitags={}
+ ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_node_tags WHERE id=#{row['id']}").each do |n|
+ poitags[n['k']]=n['v']
+ end
+ pois << [row['id'].to_i, row['lon'].to_f, row['lat'].to_f, poitags, row['version'].to_i]
+ end
+ pois
end
def sql_find_relations_in_area_and_ways(xmin,ymin,xmax,ymax,way_ids)
# ** It would be more Potlatchy to get relations for nodes within ways
# during 'getway', not here
sql=<<-EOF
- SELECT DISTINCT cr.id AS relid
+ SELECT DISTINCT cr.id AS relid,cr.version AS version
FROM current_relations cr
INNER JOIN current_relation_members crm ON crm.id=cr.id
INNER JOIN current_nodes cn ON crm.member_id=cn.id AND crm.member_type='node'
unless way_ids.empty?
sql+=<<-EOF
UNION
- SELECT DISTINCT cr.id AS relid
+ SELECT DISTINCT cr.id AS relid,cr.version AS version
FROM current_relations cr
INNER JOIN current_relation_members crm ON crm.id=cr.id
WHERE crm.member_type='way'
AND crm.member_id IN (#{way_ids.join(',')})
EOF
end
- return ActiveRecord::Base.connection.select_all(sql).collect { |a| a['relid'].to_i }.uniq
+ return ActiveRecord::Base.connection.select_all(sql).collect { |a| [a['relid'].to_i,a['version'].to_i] }
end
def sql_get_nodes_in_way(wayid)
points=[]
sql=<<-EOF
- SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,current_nodes.id,tags
+ SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,current_nodes.id
FROM current_way_nodes,current_nodes
WHERE current_way_nodes.id=#{wayid.to_i}
AND current_way_nodes.node_id=current_nodes.id
ORDER BY sequence_id
EOF
ActiveRecord::Base.connection.select_all(sql).each do |row|
- nodetags=tagstring_to_hash(row['tags'])
+ nodetags={}
+ ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_node_tags WHERE id=#{row['id']}").each do |n|
+ nodetags[n['k']]=n['v']
+ end
nodetags.delete('created_by')
points << [row['lon'].to_f,row['lat'].to_f,row['id'].to_i,nodetags]
end
tags
end
+ def sql_get_way_version(wayid)
+ ActiveRecord::Base.connection.select_one("SELECT version FROM current_ways WHERE id=#{wayid.to_i}")
+ end
end
# Local Variables:
projects / rails.git / blobdiff