def _iterResourceMeta(ctx, dataSet):
"""adds resource metadata to the Resource parent.
"""
yield V.DESCRIPTION[base.getMetaText(dataSet, "description",
macroPackage=dataSet.dd.rd, propagate=False)]
for el in itertools.chain(
_iterInfoInfos(dataSet), _iterWarningInfos(dataSet)):
yield el
sourcesSeen, citeLinksSeen = set(), set()
for table in dataSet.tables.values():
for m in table.iterMeta("source", propagate="True"):
src = m.getContent("text")
if src not in sourcesSeen:
yield V.INFO(name="source", value=src)[
"This resource contains data associated with the publication"
" %s."%src]
sourcesSeen.add(src)
for m in table.iterMeta("howtociteLink"):
link = m.getContent("text")
if link not in citeLinksSeen:
yield V.INFO(name="howtocite", value=link)[
"For advice on how to cite the resource(s)"
" that contributed to this result, see %s"%link]
citeLinksSeen.add(link)
def _iterWarningInfos(dataSet):
"""yields INFO items containing warnings from the tables in dataSet.
"""
for table in dataSet.tables.values():
for warning in table.getMeta("_warning", propagate=False, default=[]):
yield V.INFO(name="warning", value="In table %s: %s"%(
table.tableDef.id, warning.getContent("text", macroPackage=table)))
def _writeErrorTable(self, ctx, msg, code=200, queryStatus="ERROR"):
request = inevow.IRequest(ctx)
request.setHeader("content-type", base.votableType)
votable.write(
V.VOTABLE11[
V.DESCRIPTION[base.getMetaText(self.service, "description")],
V.INFO(ID="Error",
name="Error",
value=str(msg).replace('"', '\\"'))], request)
request.write("\n")
return ""
def _iterToplevelMeta(ctx, dataSet):
"""yields meta elements for the entire VOTABLE from dataSet's RD.
"""
rd = dataSet.dd.rd
if rd is None:
return
yield V.DESCRIPTION[base.getMetaText(rd, "description",
macroPackage=dataSet.dd.rd)]
for infoItem in rd.iterMeta("copyright"):
yield V.INFO(name="legal", value=infoItem.getContent("text",
macroPackage=dataSet.dd.rd))
def _iterInfoInfos(dataSet):
"""returns a sequence of V.INFO items from the info meta of dataSet.
"""
for infoItem in dataSet.getMeta("info", default=[]):
name, value, id = infoItem.infoName, infoItem.infoValue, infoItem.infoId
yield V.INFO(name=name, value=value, ID=id)[infoItem.getContent()]
def _run_queryData(self, service, inputTable, queryMeta):
format = inputTable.getParam("FORMAT") or ""
if format.lower() == "metadata":
return self._makeMetadata(service)
limits = [
q for q in (inputTable.getParam("MAXREC", None),
inputTable.getParam("TOP")) if q
]
if not limits:
limits = [base.getConfig("ivoa", "dalDefaultLimit")]
limit = min(min(limits), base.getConfig("ivoa", "dalHardLimit"))
queryMeta["dbLimit"] = limit
res = svcs.DBCore.run(self, service, inputTable, queryMeta)
if len(res) == limit:
queryStatus = "OVERFLOW"
queryStatusBody = (
"Exactly %s rows were returned. This means your"
" query probably reached the match limit. Increase MAXREC." %
limit)
else:
queryStatus = "OK"
queryStatusBody = ""
self._addPreviewLinks(res)
# We wrap our result into a data instance since we need to set the
# result type
data = rsc.wrapTable(res)
data.setMeta("_type", "results")
data.addMeta("_votableRootAttributes",
'xmlns:ssa="http://www.ivoa.net/xml/DalSsap/v1.0"')
# The returnRaw property is a hack, mainly for unit testing;
# The renderer would have to add the QUERY_STATUS here.
if service.getProperty("returnData", False):
return data
# we fix tablecoding to td for now since nobody seems to like
# binary tables and we don't have huge tables here.
votCtx = votablewrite.VOTableContext(tablecoding="td")
vot = votablewrite.makeVOTable(data, votCtx)
pubDIDId = votCtx.getIdFor(res.tableDef.getColumnByName("ssa_pubDID"))
resElement = vot.getChildDict()["RESOURCE"][0]
resElement[
V.INFO(name="SERVICE_PROTOCOL", value=self.ssapVersion)["SSAP"],
V.INFO(name="QUERY_STATUS", value=queryStatus)[queryStatusBody]]
datalinkId = service.getProperty("datalink", None)
if datalinkId and res:
dlService = self.rd.getById(datalinkId)
dlCore = getDatalinkCore(dlService, res)
# new and shiny datalink (keep)
# (we're just using endpoint 0; it should a the sync service)
dlEndpoint = dlCore.datalinkEndpoints[0]
vot[dlEndpoint.asVOT(votCtx,
dlService.getURL(dlEndpoint.rendName),
linkIdTo=pubDIDId)]
# Also point to the dl metadata service
vot[V.RESOURCE(type="meta", utype="adhoc:service")[
V.PARAM(name="standardID",
datatype="char",
arraysize="*",
value="ivo://ivoa.net/std/DataLink#links-1.0"),
V.PARAM(name="accessURL",
datatype="char",
arraysize="*",
value=self.rd.getById(datalinkId).getURL("dlmeta")),
V.GROUP(name="inputParams")[V.PARAM(
name="ID",
datatype="char",
arraysize="*",
ref=pubDIDId,
ucd="meta.id;meta.main"
)[V.LINK(content_role="ddl:id-source", value="#" +
pubDIDId)]]]]
return "application/x-votable+xml", votable.asString(vot)
def _makeErrorTable(self, ctx, msg, queryStatus="ERROR"):
# FatalFault, DefaultFault
return V.VOTABLE[V.RESOURCE(type="results")[V.INFO(
name="QUERY_STATUS", value=queryStatus)[str(msg)]]]