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relation.m
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relation.m
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relation ; Relation Class
; Copyright (C) 2008 Etienne Cherdlu <80n80n@gmail.com>
;
; This program is free software: you can redistribute it and/or modify
; it under the terms of the GNU Affero General Public License as
; published by the Free Software Foundation, either version 3 of the
; License, or (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU Affero General Public License for more details.
;
; You should have received a copy of the GNU Affero General Public License
; along with this program. If not, see <http://www.gnu.org/licenses/>.
add(sRelation,delete) ; Public ; Add a relation
; #sRelation = stream object containing a relation in osm xml format
;
n line,relationId,users,lat,lon,timestamp,user,qsBox,uid,version,changeset
n bllat,bllon,trlat,trlon
n conflict,currentUid,a,blockedByUid
;
s line=sRelation("current")
;
s relationId=$$getAttribute^osmXml(line,"id")
s version=$$getAttribute^osmXml(line,"version")
s changeset=$$getAttribute^osmXml(line,"changeset")
s timestamp=$$getAttribute^osmXml(line,"timestamp")
s user=$$getAttribute^osmXml(line,"user")
s uid=$$getAttribute^osmXml(line,"uid")
;
; Don't load older versions
i ($g(^relationtag(relationId,"@version"))>version) d q
. ;
. ; Skip the rest of the element
. i line["/>" q
. f d i line["</relation>" q
. . s line=$$read^stream(.sRelation)
;
; Conflict checks
s conflict=0
s currentUid=$g(^relationtag(relationId,"@uid"),0)
s a=version_$c(1)_changeset_$c(1)_timestamp_$c(1)_uid
;
; Don't load forked elements
i 'conflict,$d(^relationtag(relationId,"@fork")) d
. s conflict=1
. d log^conflict("relation",relationId,currentUid,a,"Edited in fosm")
;
; Don't load edits from blocked users
i 'conflict,uid'="",$g(^user(uid,"osmImport"))="block" d
. s conflict=1
. s blockedByUid=$g(^user(uid,"blockedByUid"),uid)
. d log^conflict("relation",relationId,blockedByUid,a,"User #"_uid_" ("_$g(^user(uid,"name"),"unknown")_") blocked by "_blockedByUid)
;
; Don't delete if current user's edits are marked to be preserved
i 'conflict,delete,currentUid'="",$g(^user(currentUid,"osmImport"))="doNotDelete" d
. s conflict=1
. s blockedByUid=$g(^user(currentUid,"blockedByUid"),currentUid)
. d log^conflict("relation",relationId,blockedByUid,a,"Deletion of element belonging to #"_currentUid_" ("_$g(^user(currentUid,"name"),"unknown")_") preserved. Do not delete requested by user #"_blockedByUid)
;
; If no conflict then delete old relation
i 'conflict d delete(relationId,delete)
;
d setTag(relationId,"@timestamp",timestamp,changeset,version,delete,conflict)
d setTag(relationId,"@user",user,changeset,version,delete,conflict)
d setTag(relationId,"@uid",uid,changeset,version,delete,conflict)
d setTag(relationId,"@version",version,changeset,version,delete,conflict)
d setTag(relationId,"@changeset",changeset,changeset,version,delete,conflict)
i delete d setTag(relationId,"@visible","false",changeset,version,delete,conflict)
i conflict d setTag(relationId,"@conflict","true",changeset,version,delete,conflict)
;
; Changeset by version index
i 'conflict d
. s ^relationVersion(relationId,"v",version)=changeset
. s ^relationVersion(relationId,"c",changeset,version)=""
;
; Changeset headers
s ^c(changeset)=""
s ^c(changeset,"r",relationId)=""
s ^c(changeset,"r",relationId,"v",version)=""
;
s sequenceNo=0
i line'["/>" f d i line["</relation>" q
. s line=$$read^stream(.sRelation)
. i line["<member" s sequenceNo=sequenceNo+1 d addMember(.sRelation,relationId,sequenceNo,changeset,version,delete,conflict) q
. i line["<tag" d addTag(.sRelation,relationId,changeset,version,delete,conflict) q
;
i 'conflict,'delete d indexTags(relationId)
;
; Create export index
i 'conflict s ^export($$nowZulu^date(),"r",changeset,relationId,version)=""
;
; Update user class
d add^user(uid,user)
;
d onEdit^user(uid)
;
; Update metrics (don't count conflicted relations)
i 'conflict d
. i version=1 d update^metric("osmRelationCount",1)
. i delete d update^metric("osmRelationCount",-1)
. d update^metric("osmRelationEdits",1)
;
q
addDiff(sRelation,delete,changeset) ; Public ; Add a relation
; #sRelation = stream object containing a relation in osm xml format
;
n line,relationId,users,lat,lon,timestamp,user,qsBox,uid,version,ok
n bllat,bllon,trlat,trlon
;
s line=sRelation("current")
;
s relationId=$$getAttribute^osmXml(line,"id")
s timestamp=$$nowZulu^date()
;
; New relations
i relationId<0 d
. s oldId=relationId
. l +^id("relation")
. s relationId=^id("relation")+1
. s ^id("relation")=relationId
. l -^id("relation")
. s newId=relationId
. s version=1
. ;
. ; Add to new item map
. s ^temp($j,"relation",oldId)=newId
;
; Existing relations
s ok=1
e d i 'ok q 0
. s version=$$getAttribute^osmXml(line,"version")
. ; check version match
. i $$currentVersion(relationId)'=version d error409^http("Version mismatch: Provided "_version_", server had: "_$$currentVersion(relationId)_" of Relation "_relationId) s ok=0 q ; Version mismatch
. s oldId=relationId
. s newId=relationId
. s version=version+1
. d delete(relationId,delete)
;
s uid=^c(changeset,"t","@uid")
s user=^user(uid,"name")
i user["'" s user=$$xmlEscapeApostrophe(user)
;
d setTag(relationId,"@timestamp",timestamp,changeset,version,delete,0)
d setTag(relationId,"@user",user,changeset,version,delete,0)
d setTag(relationId,"@uid",uid,changeset,version,delete,0)
d setTag(relationId,"@version",version,changeset,version,delete,0)
d setTag(relationId,"@changeset",changeset,changeset,version,delete,0)
d setTag(relationId,"@fork",1,changeset,version,delete,0)
i delete d setTag(relationId,"@visible","false",changeset,version,delete,0)
;
; Changeset by version index
s ^relationVersion(relationId,"v",version)=changeset
s ^relationVersion(relationId,"c",changeset,version)=""
;
; Changeset headers
s ^c(changeset)=""
s ^c(changeset,"r",relationId)=""
s ^c(changeset,"r",relationId,"v",version)=""
;
s sequenceNo=0
i line'["/>" f d i line["</relation>" q
. s line=$$read^stream(.sRelation)
. i line["<member" s sequenceNo=sequenceNo+1 d addMember(.sRelation,relationId,sequenceNo,changeset,version,delete,0) q
. i line["<tag" d addTag(.sRelation,relationId,changeset,version,delete,0) q
;
i 'delete d indexTags(relationId)
;
; Create export index (uses the same timestamp as the element just created)
s ^export(timestamp,"r",changeset,relationId,version)=""
;
s rSeq=$g(^response($j))+1
s ^response($j)=rSeq
;
i delete s newId="",version=""
;
s ^response($j,rSeq,"oldId")=oldId
s ^response($j,rSeq,"newId")=newId
s ^response($j,rSeq,"version")=version
s ^response($j,rSeq,"element")="relation"
;
d onEdit^user(uid)
;
; Update metrics
i version=1 d update^metric("fosmRelationCount",1)
i delete d update^metric("fosmRelationCount",-1)
d update^metric("fosmRelationEdits",1)
;
q 1
addMember(sRelation,relationId,sequenceNo,changeset,version,delete,conflict) ; Private ; Add a member to a relation
;
n line,type,role,ref
;
s line=sRelation("current")
i line'["/>" f d i line["/>" q
. s line=line_$$read^stream(.sRelation)
;
s type=$$getAttribute^osmXml(line,"type") i type="" q
s role=$$getAttribute^osmXml(line,"role") ; null roles are permitted
s ref=$$getAttribute^osmXml(line,"ref") i ref="" q
i ref<0 s ref=$g(^temp($j,type,ref)) ; TODO: This could be a forward reference - if undef then allocate at this point and use when we get to it.
;
i type'="" d
. s ^c(changeset,"r",relationId,"v",version,"s",sequenceNo,"t")=type
. i 'conflict,'delete s ^relation(relationId,"seq",sequenceNo,"type")=type
;
i ref'="" d
. s ^c(changeset,"r",relationId,"v",version,"s",sequenceNo,"i")=ref
. i 'conflict,'delete s ^relation(relationId,"seq",sequenceNo,"ref")=ref
;
s ^c(changeset,"r",relationId,"v",version,"s",sequenceNo,"r")=role
i 'conflict,'delete s ^relation(relationId,"seq",sequenceNo,"role")=role
;
i 'conflict,'delete s ^relationMx(type,ref,relationId)=""
q
addTag(sRelation,relationId,changeset,version,delete,conflict) ; Private ; Load a tag and add it
;
n line,k,v
;
s line=sRelation("current")
i line'["/>" f d i line["/>" q
. s line=line_$$read^stream(.sRelation)
;
s k=$$getAttribute^osmXml(line,"k") i k="" q
i $l(k)>100 s k=$e(k,1,100)_".."
s v=$$getAttribute^osmXml(line,"v")
i v["'" s v=$$xmlEscapeApostrophe(v)
i $l(v)>4000 s v=$e(v,1,4000)_".."
d setTag(relationId,k,v,changeset,version,delete,conflict)
q
setTag(relationId,k,v,changeset,version,delete,conflict) ; Private ; Add a tag
;
; Add to changeset
s ^c(changeset,"r",relationId,"v",version,"t",k)=v
;
; Add to active dataset
i 'conflict,'delete d
. s ^relationtag(relationId,k)=v
q
getTag(relationId,tag) ; Public ; Get the value of a tag for a relation
;
i relationId="" q ""
;
q $g(^relationtag(relationId,tag))
indexTags(relationId) ; Private ; Create index entries for a single relation
;
n k,v
n bllat,bllon,trlat,trlon
;
d bbox(relationId,.bllat,.bllon,.trlat,.trlon)
s qsBox=$$bbox^quadString(bllat,bllon,trlat,trlon)
i qsBox="" s qsBox="*"
;
; If a relation has no members, then it will not have any spatial extent. Use # to indicate this.
i $o(^relation(relationId,""))="" s qsBox="#"
;
s k=""
f d i k="" q
. s k=$o(^relationtag(relationId,k)) i k="" q
. i k="@xapi:users" q
. i k="@version" q
. i k="@timestamp" q
. i k="@fork" q
. s v=^relationtag(relationId,k)
. i $l(v)>100 s v=$e(v,1,100)_".."
. i v="" q
. s ^relationx(k,v,qsBox,relationId)=""
. s ^relationx(k,"*",qsBox,relationId)=""
;
s ^relation(relationId)=qsBox_$c(1)_bllat_$c(1)_bllon_$c(1)_trlat_$c(1)_trlon ; Save the qsBox because a member might get moved independently
s ^relationx("*","*",qsBox,relationId)=""
;
q
xml(indent,relationId,select) ; Public ; Generate xml for a relation
;
;
n user,uid,uidUser,timestamp,version,changeset
n xml
;
s user=$g(^relationtag(relationId,"@user"))
s uid=$g(^relationtag(relationId,"@uid"))
s timestamp=$g(^relationtag(relationId,"@timestamp"))
s version=$g(^relationtag(relationId,"@version"))
s changeset=$g(^relationtag(relationId,"@changeset"))
;
s xml="<relation"
s xml=xml_$$attribute^osmXml("id",relationId)
s xml=xml_$$attribute^osmXml("visible","true")
i timestamp'="" s xml=xml_$$attribute^osmXml("timestamp",timestamp)
i version'="" s xml=xml_$$attribute^osmXml("version",version)
i changeset'="" s xml=xml_$$attribute^osmXml("changeset",changeset)
i user'="" s xml=xml_$$attribute^osmXml("user",user)
i uid'="" s xml=xml_$$attribute^osmXml("uid",uid)
;
s xml=xml_">"_$c(13,10)
;
d xmlMembers(relationId,.xml)
;
d xmlTags(relationId,.xml)
s xml=xml_"</relation>"_$c(13,10)
;
q xml
xmlMembers(wayId,xml) ; Public ; Generate xml for a relation's members
;
n seq,type,ref,role
;
s seq=""
f d i seq="" q
. s seq=$o(^relation(relationId,"seq",seq)) i seq="" q
. s xml=xml_"<member"
. s type=$g(^relation(relationId,"seq",seq,"type"))
. s ref=$g(^relation(relationId,"seq",seq,"ref"))
. s role=$g(^relation(relationId,"seq",seq,"role"))
. i type'="" s xml=xml_$$attribute^osmXml("type",type)
. i ref'="" s xml=xml_$$attribute^osmXml("ref",ref)
. s xml=xml_$$attribute^osmXml("role",role)
. s xml=xml_"/>"_$c(13,10)
. i $l(xml)>10000 w xml s xml=""
q
xmlTags(id,xml) ; Public ; Generate xml for a relation's tags
;
n k
;
s k=""
f d i k="" q
. s k=$o(^relationtag(id,k)) i k="" q
. i $e(k,1)="@" s k="@zzzzzzzzzzzzzzzzzz" q ; Skip attributes
. i $d(^relationtag(id,k))#10=0 q
. s xml=xml_"<tag"
. s xml=xml_$$attribute^osmXml("k",k)
. s xml=xml_" v='"_^relationtag(id,k)_"'" ; Tags are stored as escaped strings
. s xml=xml_"/>"_$c(13,10)
. i $l(xml)>10000 w xml s xml=""
q
bbox(relationId,bllat,bllon,trlat,trlon,parents,recalculate) ; Public ; Get the bbox for a relation
;
; Inputs:
; recalculate - 0 = used stored value if available (default). The stored value may be wrong if nodes have been moved subsequently.
; 1 = recalculate from current node locations (slow).
;
n seq,ref,type,relation
n bllat1,bllon1,trlat1,trlon1
;
s recalculate=$g(recalculate)=1
;
; Use previously calculated values if present
i 'recalculate d i bllat'="" q
. s relation=$g(^relation(relationId))
. s bllat=$p(relation,$c(1),2)
. s bllon=$p(relation,$c(1),3)
. s trlat=$p(relation,$c(1),4)
. s trlon=$p(relation,$c(1),5)
;
; Create list of parents to handle recursive relations
s parents=$g(parents)_"|"_relationId
;
s bllat=999999,bllon=999999,trlat=-999999,trlon=-999999
s bllat1=999999,bllon1=999999,trlat1=-999999,trlon1=-999999
s seq=""
f d i seq="" q
. s seq=$o(^relation(relationId,"seq",seq)) i seq="" q
. s ref=$g(^relation(relationId,"seq",seq,"ref"))
. s type=$g(^relation(relationId,"seq",seq,"type")) i type="" q
. i type="node" d bbox^node(ref,.bllat1,.bllon1,.trlat1,.trlon1)
. i type="way" d bbox^way(ref,.bllat1,.bllon1,.trlat1,.trlon1)
. i type="relation",parents_"|"'[("|"_ref_"|") d bbox^relation(ref,.bllat1,.bllon1,.trlat1,.trlon1,parents,recalculate)
. i trlat1>trlat s trlat=trlat1
. i bllat1<bllat s bllat=bllat1
. i trlon1>trlon s trlon=trlon1
. i bllon1<bllon s bllon=bllon1
q
delete(relationId,delete) ; Public ; Delete a relation
;
n qsBox
;
i relationId="" q
i '$d(^relation(relationId)) q
;
s qsBox=$p($g(^relation(relationId)),$c(1),1)
;
d deleteMembers(relationId)
i qsBox'="" d deleteTags(relationId,qsBox)
;
i qsBox'="" k ^relationx("*","*",qsBox,relationId)
k ^relation(relationId)
;
q
deleteMembers(relationId) ; Private ; Delete all members of a relation
;
n seq,ref,type
;
s seq=""
f d i seq="" q
. s seq=$o(^relation(relationId,"seq",seq)) i seq="" q
. s ref=$g(^relation(relationId,"seq",seq,"ref"))
. s type=$g(^relation(relationId,"seq",seq,"type"))
. i type'="",ref'="" k ^relationMx(type,ref,relationId)
. k ^relation(relationId,"seq",seq)
;
q
deleteTags(relationId,qsBox) ; Private ; Delete all tags and tag indices for a relation
;
n key,value
;
s key=""
f d i key="" q
. s key=$o(^relationtag(relationId,key)) i key="" q
. s value=^relationtag(relationId,key)
. i value="" q
. i $l(value)>100 s value=$e(value,1,100)_".."
. k ^relationx(key,value,qsBox,relationId)
. k ^relationx(key,"*",qsBox,relationId)
;
k ^relationtag(relationId)
;
q
appendUser(users,user) ; Private ; Append a user to a list of users
;
s user=$tr(user,",","") ; Remove commas from name
;
i $$contains^string(users,user,",") q users
;
i users="" s users=user
e s users=users_","_user
q users
xmlEscapeApostrophe(string) ; Private ; Escape apostrophe
;
n out,x,c
;
s out=""
f x=1:1:$l(string) d
. s c=$e(string,x)
. i "'"[c s out=out_"'" q
. s out=out_c
q out
hasRealTag(id) ; Public ; Does this way have a real tag?
;
n hasRealTag,tag
;
s hasRealTag=0
s tag="@zzzzzzzzzzzzzzzz"
f d i tag="" q
. s tag=$o(^relationtag(id,tag)) i tag="" q
. s hasRealTag=1,tag=""
;
q hasRealTag
versionAtChangeset(relationId,changeset,relationChangeset,relationVersion) ; Public ; Get the changeset and version that was current at a given changeset time
;
; Usage:
; d versionAtChangeset^relation(relationId,changeset,.relationChangeset,.relationVersion)
; Output:
; relationChangeset - null if not found
; relationVersion - null if not found
;
s relationChangeset=changeset
s relationVersion=""
i '$d(^relationVersion(relationId,"c",relationChangeset)) s relationChangeset=$o(^relationVersion(relationId,"c",relationChangeset),-1) i relationChangeset="" q
s relationVersion=$o(^relationVersion(relationId,"c",relationChangeset,""),-1) i relationVersion="" s relationChangeset="" q
;
q
restRelation(string) ; Public ; Single relation query
;
; Inputs:
; string - relationId[ /full | /version/full ]
;
n step,relationId,full,logId,indent
n seq,nodeId,wayId,ndSeq,subRelationId
n count
;
; Get next step
s step=$p(string,SLASH,1),string=$p(string,SLASH,2,$l(string))
s relationId=step
;
; Get next step
s step=$p(string,SLASH,1),string=$p(string,SLASH,2,$l(string))
;
; Three choices here:
; / - current relation only
; /history - all versions of relation
; /full - current relation plus current members
; /#version/full - historic way plus historic nodes
s full=0
i step="" s full=0
i step="full" s full=1
i step="history" d restRelationHistory(relationId) q
i step?1.n d restRelation^relationVersion(relationId,step,string) q
;
k ^temp($j)
s count=0
;
s logId=$$logStart^xapi("relation/"_relationId_$s(full:"/full",1:""),"")
;
; Bad query?
i relationId'?1.n d notFound^http,logEnd^xapi(logId,0,"404 Not found") q
;
; Is it there?
i '$d(^relation(relationId)) d gone^http,logEnd^xapi(logId,0,"410 Gone") q
;
d header^http("text/xml")
d xmlProlog^rest("")
;
s indent=""
d osm^xapi(indent)
;
; Select all nodes that belong to this relation and all nodes that belong to
; ways that belong to this relation
s seq=""
i full f d i seq="" q
. s seq=$o(^relation(relationId,"seq",seq)) i seq="" q
. ;
. ; Nodes
. i ^relation(relationId,"seq",seq,"type")="node" d q
. . s nodeId=^relation(relationId,"seq",seq,"ref")
. . i $d(^temp($j,"node",nodeId)) q
. . s ^temp($j,"node",nodeId)=""
. . w $$xml^node(indent,nodeId,"node|@*|tag|")
. . s count=count+1
. ;
. ; Nodes within ways
. i ^relation(relationId,"seq",seq,"type")="way" d q
. . s wayId=^relation(relationId,"seq",seq,"ref")
. . s ndSeq=""
. . f d i ndSeq="" q
. . . s ndSeq=$o(^way(wayId,ndSeq)) i ndSeq="" q
. . . s nodeId=^way(wayId,ndSeq)
. . . i $d(^temp($j,"node",nodeId)) q
. . . s ^temp($j,"node",nodeId)=""
. . . w $$xml^node(indent,nodeId,"node|@*|tag|")
. . . s count=count+1
;
; Select all ways that belong to this relation
s seq=""
i full f d i seq="" q
. s seq=$o(^relation(relationId,"seq",seq)) i seq="" q
. i ^relation(relationId,"seq",seq,"type")'="way" q
. s wayId=^relation(relationId,"seq",seq,"ref")
. w $$xml^way(indent,wayId,"way|@*|nd|tag|")
. s count=count+1
;
; Select this relation
w $$xml(indent,relationId,"relation|@*|member|tag|")
s count=count+1
;
; Select all relations that belong to this relation
s seq=""
i full f d i seq="" q
. s seq=$o(^relation(relationId,"seq",seq)) i seq="" q
. i ^relation(relationId,"seq",seq,"type")'="relation" q
. s subRelationId=^relation(relationId,"seq",seq,"ref")
. w $$xml(indent,subRelationId,"relation|@*|member|tag|")
. s count=count+1
;
w indent,"</osm>",$c(13,10)
;
d logEnd^xapi(logId,count,"")
;
q
restRelations(step,string) ; Public ; Multi node query
;
n logId,relationIds,ok,i,relationId,indent
;
s logId=$$logStart^xapi($$decode^xapi(step),"")
;
s relationIds=$p(step,EQUALS,2)
;
; Validate query
s ok=1
f i=1:1:$l(relationIds,",") d i 'ok q
. s relationId=$p(relationIds,",",i)
. i relationId'?1.n d notFound^http,logEnd^xapi(logId,0,"404 Not found") s ok=0 q
. i '$d(^relation(relationId)) d gone^http,logEnd^xapi(logId,0,"410 Gone") s ok=0 q
i 'ok q
;
d header^http("text/xml")
d xmlProlog^rest("")
;
s indent=""
d osm^xapi(indent)
;
f i=1:1:$l(relationIds,",") w $$xml(indent,$p(relationIds,",",i),"relation|@*|member|tag|")
;
w indent,"</osm>",$c(13,10)
;
d logEnd^xapi(logId,i,"")
;
q
restRelationHistory(relationId) ; Public ; All versions of relation
;
n logId,count,indent
n version,changeset
;
s count=0
s logId=$$logStart^xapi("relation/"_relationId_"/history","")
;
; Bad query?
i relationId'?1.n d notFound^http,logEnd^xapi(logId,0,"404 Not found") q
;
; Is it there?
i '$d(^relationVersion(relationId)) d notFound^http,logEnd^xapi(logId,0,"404 Not found") q
;
d header^http("text/xml")
d xmlProlog^rest("")
;
s indent=""
d osm^xapi(indent)
;
; Iterate all changesets
s version=""
f d i version="" q
. s version=$o(^relationVersion(relationId,"v",version)) i version="" q
. s changeset=^relationVersion(relationId,"v",version)
. ;
. w $$xml^relationVersion(indent,relationId,changeset,version,"relation|@*|member|tag|")
. s count=count+1
;
w indent,"</osm>",$c(13,10)
;
d logEnd^xapi(logId,count,"")
;
q
currentVersion(relationId) ; Public ; Return the current version number of a relation
;
; Usage: s currentVersion=$$currentVersion^relation(relationId)
; Input:
; relationId - relation id, must not be null
; Output:
; currentVersion - if the relation does not exists then null is returned
;
n version
;
s version=$o(^relationVersion(relationId,"v",""),-1)
i version="" s version=$g(^relationtag(relationId,"@version"))
q version