def getVOT(self, ctx):
# the main trouble here is: What if there's multiple foreign keys
# into destTD? To prevent multiple inclusions of a single
# table, we add a reference to our serialised VOTable stan in
# destTD's _FKR_serializedVOT attribute. That will fail
# if we produce two VOTables from the same table at the same time,
# but let's worry about that later.
destTD = self.value.inTable
srcTD = self.value.parent
pkDecl = V.GROUP[V.VODML[V.ROLE["vo-dml:ObjectTypeInstance.ID"]], [
V.FIELDref(
ref=ctx.getOrMakeIdFor(destTD.tableDef.getColumnByName(colName)
)) for colName in self.foreignKey.dest
]]
pkDecl(ID=ctx.getOrMakeIdFor(pkDecl))
fkDecl = V.GROUP(ref=ctx.getOrMakeIdFor(pkDecl))[
V.VODML[V.TYPE["vo-dml:ORMReference"]], [
V.FIELDref(ref=ctx.getIdFor(srcTD.getColumnByName(colName)))
for colName in self.foreignKey.source
]]
targetVOT = getattr(destTD, "_FKR_serializedVOT", lambda: None)()
# weakrefs are None if expired
if targetVOT is None:
targetVOT = ctx.makeTable(destTD)
destTD._FKR_serializedVOT = weakref.ref(targetVOT)
ctx.getEnclosingResource()[targetVOT]
targetVOT[pkDecl]
return fkDecl
def _iterNotes(serManager): """yields GROUPs for table notes. The idea is that the note is in the group's description, and the FIELDrefs give the columns that the note applies to. """ # add notes as a group with FIELDrefs, but don't fail on them for key, note in serManager.notes.iteritems(): noteId = serManager.getOrMakeIdFor(note) noteGroup = V.GROUP(name="note-%s"%key, ID=noteId)[ V.DESCRIPTION[note.getContent(targetFormat="text")]] for col in serManager: if col["note"] is note: noteGroup[V.FIELDref(ref=col["id"])] yield noteGroup
def getVOT(self, ctx):
return V.FIELDref(ref=ctx.getOrMakeIdFor(self.value))[V.VODML[V.ROLE[
common.completeVODMLId(ctx, self.name)]]]
