26from ._base
import Catalog
27from ._table
import QuadrupoleKey, SourceCatalog, SourceColumnView, SourceRecord, SourceTable
29Catalog.register(
"Source", SourceCatalog)
36 """Return the subset of self for which the parent field equals the
39 In order for this method to
return the correct result, it must be
40 sorted by parent (i.e. self.isSorted(SourceTable.getParentKey()) must
41 be
True). This
is naturally the case
with SourceCatalogs produced by
42 the detection
and deblending tasks, but it may
not be true when
43 concatenating multiple such catalogs.
45 Additional Catalogs
or sequences whose elements correspond
in order to
46 the records of self (i.e. ``zip(self, *args)``
is valid) will be
47 subset using the same slice object used on self,
and these subsets
48 will be returned along
with the subset of self.
52 parent : `int`
or `iterable` of `int`
53 ID(s) of the parent(s) to get children
for.
55 Additional catalogs to subset
for the children to
return.
60 Children sources
if ``parent``
is of type `int`,
or a generator
62 each parent
if ``parent``
is an `iterable`.
67 Raised
if the catalog
is not sorted by the parent key.
71 Each call to this function checks
if the catalog
is sorted, which
is
72 of O(n) complexity,
while fetching the children
is of O(log n). To
73 minimize the computational overhead, it
is preferable to prepare an
74 iterable of parent ids
for which the children need to be fetched
and
75 pass the iterable
as ``parent``.
77 if not self.isSorted(SourceTable.getParentKey()):
79 "The table is not sorted by parent, so cannot getChildren")
81 def _getChildrenWithoutChecking(parent):
82 """Return the subset of self for which the parent field equals the
85 This function works as desired only
if `self`
is sorted by the
86 parent key, but does
not check
if it
is sorted. This function must
87 be used only after ensuring outside of the function that
88 self.isSorted(SourceTable.getParentKey() evaluates to
True.
93 ID of the parent to get children
for.
100 s = self.equal_range(parent, SourceTable.getParentKey())
102 return (self[s],) + tuple(arg[s]
for arg
in args)
107 return (_getChildrenWithoutChecking(p)
for p
in parent)
109 return _getChildrenWithoutChecking(parent)
119 return QuadrupoleKey(self.schema[
"slot_PsfShape"]).get(self)
121 raise LogicError(
"Key is not valid (if this is a SourceRecord, make sure slot aliases have been "
124 def _getPsfShapeComponent(self, suffix):
128 return self[
"slot_PsfShape_" + suffix]
130 raise LogicError(
"Key is not valid (if this is a SourceRecord, make sure slot aliases have been "
149 def _getPsfShapeComponent(self, suffix):
153 return self[
"slot_PsfShape_" + suffix]
155 raise LogicError(
"Key is not valid (if this is a SourceCatalog, make sure slot aliases have been "
172 self.schema.getAliasMap().
set(
"slot_PsfShape", name)
def getChildren(self, parent, *args)
def _getPsfShapeComponent(self, suffix)
def _getPsfShapeComponent(self, suffix)
def getPsfShapeFlag(self)
def definePsfShape(self, name)
Record class that contains measurements made on a single exposure.
daf::base::PropertySet * set