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LSST Data Management Base Package
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Public Member Functions | Static Public Attributes | List of all members
lsst.dax.apdb.apdb.Apdb Class Reference
Inheritance diagram for lsst.dax.apdb.apdb.Apdb:
lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra lsst.dax.apdb.sql.apdbSql.ApdbSql

Public Member Functions

Apdb from_config (cls, ApdbConfig config)
 
Apdb from_uri (cls, ResourcePathExpression uri)
 
Table|None tableDef (self, ApdbTables table)
 
pandas.DataFrame getDiaObjects (self, Region region)
 
pandas.DataFrame|None getDiaSources (self, Region region, Iterable[int]|None object_ids, astropy.time.Time visit_time)
 
pandas.DataFrame|None getDiaForcedSources (self, Region region, Iterable[int]|None object_ids, astropy.time.Time visit_time)
 
bool containsVisitDetector (self, int visit, int detector)
 
pandas.DataFrame getSSObjects (self)
 
None store (self, astropy.time.Time visit_time, pandas.DataFrame objects, pandas.DataFrame|None sources=None, pandas.DataFrame|None forced_sources=None)
 
None storeSSObjects (self, pandas.DataFrame objects)
 
None reassignDiaSources (self, Mapping[int, int] idMap)
 
None dailyJob (self)
 
int countUnassociatedObjects (self)
 
ConfigurableField makeField (cls, str doc)
 
ApdbMetadata metadata (self)
 

Static Public Attributes

 ConfigClass = ApdbConfig
 

Detailed Description

Abstract interface for APDB.

Definition at line 84 of file apdb.py.

Member Function Documentation

◆ containsVisitDetector()

bool lsst.dax.apdb.apdb.Apdb.containsVisitDetector ( self,
int visit,
int detector )
Test whether any sources for a given visit-detector are present in
the APDB.

Parameters
----------
visit, detector : `int`
    The ID of the visit-detector to search for.

Returns
-------
present : `bool`
    `True` if at least one DiaSource or DiaForcedSource record
    may exist for the specified observation, `False` otherwise.

Reimplemented in lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra, and lsst.dax.apdb.sql.apdbSql.ApdbSql.

Definition at line 258 of file apdb.py.

258 def containsVisitDetector(self, visit: int, detector: int) -> bool:
259 """Test whether any sources for a given visit-detector are present in
260 the APDB.
261
262 Parameters
263 ----------
264 visit, detector : `int`
265 The ID of the visit-detector to search for.
266
267 Returns
268 -------
269 present : `bool`
270 `True` if at least one DiaSource or DiaForcedSource record
271 may exist for the specified observation, `False` otherwise.
272 """
273 raise NotImplementedError()
274

◆ countUnassociatedObjects()

int lsst.dax.apdb.apdb.Apdb.countUnassociatedObjects ( self)
Return the number of DiaObjects that have only one DiaSource
associated with them.

Used as part of ap_verify metrics.

Returns
-------
count : `int`
    Number of DiaObjects with exactly one associated DiaSource.

Notes
-----
This method can be very inefficient or slow in some implementations.

Reimplemented in lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra, and lsst.dax.apdb.sql.apdbSql.ApdbSql.

Definition at line 372 of file apdb.py.

372 def countUnassociatedObjects(self) -> int:
373 """Return the number of DiaObjects that have only one DiaSource
374 associated with them.
375
376 Used as part of ap_verify metrics.
377
378 Returns
379 -------
380 count : `int`
381 Number of DiaObjects with exactly one associated DiaSource.
382
383 Notes
384 -----
385 This method can be very inefficient or slow in some implementations.
386 """
387 raise NotImplementedError()
388

◆ dailyJob()

None lsst.dax.apdb.apdb.Apdb.dailyJob ( self)
Implement daily activities like cleanup/vacuum.

What should be done during daily activities is determined by
specific implementation.

Reimplemented in lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra, and lsst.dax.apdb.sql.apdbSql.ApdbSql.

Definition at line 363 of file apdb.py.

363 def dailyJob(self) -> None:
364 """Implement daily activities like cleanup/vacuum.
365
366 What should be done during daily activities is determined by
367 specific implementation.
368 """
369 raise NotImplementedError()
370

◆ from_config()

Apdb lsst.dax.apdb.apdb.Apdb.from_config ( cls,
ApdbConfig config )
Create Ppdb instance from configuration object.

Parameters
----------
config : `ApdbConfig`
    Configuration object, type of this object determines type of the
    Apdb implementation.

Returns
-------
apdb : `apdb`
    Instance of `Apdb` class.

Definition at line 90 of file apdb.py.

90 def from_config(cls, config: ApdbConfig) -> Apdb:
91 """Create Ppdb instance from configuration object.
92
93 Parameters
94 ----------
95 config : `ApdbConfig`
96 Configuration object, type of this object determines type of the
97 Apdb implementation.
98
99 Returns
100 -------
101 apdb : `apdb`
102 Instance of `Apdb` class.
103 """
104 return make_apdb(config)
105

◆ from_uri()

Apdb lsst.dax.apdb.apdb.Apdb.from_uri ( cls,
ResourcePathExpression uri )
Make Apdb instance from a serialized configuration.

Parameters
----------
uri : `~lsst.resources.ResourcePathExpression`
    URI or local file path pointing to a file with serialized
    configuration, or a string with a "label:" prefix. In the latter
    case, the configuration will be looked up from an APDB index file
    using the label name that follows the prefix. The APDB index file's
    location is determined by the ``DAX_APDB_INDEX_URI`` environment
    variable.

Returns
-------
apdb : `apdb`
    Instance of `Apdb` class, the type of the returned instance is
    determined by configuration.

Definition at line 107 of file apdb.py.

107 def from_uri(cls, uri: ResourcePathExpression) -> Apdb:
108 """Make Apdb instance from a serialized configuration.
109
110 Parameters
111 ----------
112 uri : `~lsst.resources.ResourcePathExpression`
113 URI or local file path pointing to a file with serialized
114 configuration, or a string with a "label:" prefix. In the latter
115 case, the configuration will be looked up from an APDB index file
116 using the label name that follows the prefix. The APDB index file's
117 location is determined by the ``DAX_APDB_INDEX_URI`` environment
118 variable.
119
120 Returns
121 -------
122 apdb : `apdb`
123 Instance of `Apdb` class, the type of the returned instance is
124 determined by configuration.
125 """
126 if isinstance(uri, str) and uri.startswith("label:"):
127 tag, _, label = uri.partition(":")
128 index = ApdbIndex()
129 # Current format for config files is "pex_config"
130 format = "pex_config"
131 uri = index.get_apdb_uri(label, format)
132 path = ResourcePath(uri)
133 config_str = path.read().decode()
134 # Assume that this is ApdbConfig, make_apdb will raise if not.
135 config = cast(ApdbConfig, Config._fromPython(config_str))
136 return make_apdb(config)
137

◆ getDiaForcedSources()

pandas.DataFrame | None lsst.dax.apdb.apdb.Apdb.getDiaForcedSources ( self,
Region region,
Iterable[int] | None object_ids,
astropy.time.Time visit_time )
Return catalog of DiaForcedSource instances from a given region.

Parameters
----------
region : `lsst.sphgeom.Region`
    Region to search for DIASources.
object_ids : iterable [ `int` ], optional
    List of DiaObject IDs to further constrain the set of returned
    sources. If list is empty then empty catalog is returned with a
    correct schema. If `None` then returned sources are not
    constrained. Some implementations may not support latter case.
visit_time : `astropy.time.Time`
    Time of the current visit.

Returns
-------
catalog : `pandas.DataFrame`, or `None`
    Catalog containing DiaSource records. `None` is returned if
    ``read_forced_sources_months`` configuration parameter is set to 0.

Raises
------
NotImplementedError
    May be raised by some implementations if ``object_ids`` is `None`.

Notes
-----
This method returns DiaForcedSource catalog for a region with
additional filtering based on DiaObject IDs. Only a subset of DiaSource
history is returned limited by ``read_forced_sources_months`` config
parameter, w.r.t. ``visit_time``. If ``object_ids`` is empty then an
empty catalog is always returned with the correct schema
(columns/types). If ``object_ids`` is `None` then no filtering is
performed and some of the returned records may be outside the specified
region.

Reimplemented in lsst.dax.apdb.sql.apdbSql.ApdbSql, and lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra.

Definition at line 216 of file apdb.py.

218 ) -> pandas.DataFrame | None:
219 """Return catalog of DiaForcedSource instances from a given region.
220
221 Parameters
222 ----------
223 region : `lsst.sphgeom.Region`
224 Region to search for DIASources.
225 object_ids : iterable [ `int` ], optional
226 List of DiaObject IDs to further constrain the set of returned
227 sources. If list is empty then empty catalog is returned with a
228 correct schema. If `None` then returned sources are not
229 constrained. Some implementations may not support latter case.
230 visit_time : `astropy.time.Time`
231 Time of the current visit.
232
233 Returns
234 -------
235 catalog : `pandas.DataFrame`, or `None`
236 Catalog containing DiaSource records. `None` is returned if
237 ``read_forced_sources_months`` configuration parameter is set to 0.
238
239 Raises
240 ------
241 NotImplementedError
242 May be raised by some implementations if ``object_ids`` is `None`.
243
244 Notes
245 -----
246 This method returns DiaForcedSource catalog for a region with
247 additional filtering based on DiaObject IDs. Only a subset of DiaSource
248 history is returned limited by ``read_forced_sources_months`` config
249 parameter, w.r.t. ``visit_time``. If ``object_ids`` is empty then an
250 empty catalog is always returned with the correct schema
251 (columns/types). If ``object_ids`` is `None` then no filtering is
252 performed and some of the returned records may be outside the specified
253 region.
254 """
255 raise NotImplementedError()
256

◆ getDiaObjects()

pandas.DataFrame lsst.dax.apdb.apdb.Apdb.getDiaObjects ( self,
Region region )
Return catalog of DiaObject instances from a given region.

This method returns only the last version of each DiaObject,
and may return only the subset of the DiaObject columns needed
for AP association. Some
records in a returned catalog may be outside the specified region, it
is up to a client to ignore those records or cleanup the catalog before
futher use.

Parameters
----------
region : `lsst.sphgeom.Region`
    Region to search for DIAObjects.

Returns
-------
catalog : `pandas.DataFrame`
    Catalog containing DiaObject records for a region that may be a
    superset of the specified region.

Reimplemented in lsst.dax.apdb.sql.apdbSql.ApdbSql, and lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra.

Definition at line 156 of file apdb.py.

156 def getDiaObjects(self, region: Region) -> pandas.DataFrame:
157 """Return catalog of DiaObject instances from a given region.
158
159 This method returns only the last version of each DiaObject,
160 and may return only the subset of the DiaObject columns needed
161 for AP association. Some
162 records in a returned catalog may be outside the specified region, it
163 is up to a client to ignore those records or cleanup the catalog before
164 futher use.
165
166 Parameters
167 ----------
168 region : `lsst.sphgeom.Region`
169 Region to search for DIAObjects.
170
171 Returns
172 -------
173 catalog : `pandas.DataFrame`
174 Catalog containing DiaObject records for a region that may be a
175 superset of the specified region.
176 """
177 raise NotImplementedError()
178

◆ getDiaSources()

pandas.DataFrame | None lsst.dax.apdb.apdb.Apdb.getDiaSources ( self,
Region region,
Iterable[int] | None object_ids,
astropy.time.Time visit_time )
Return catalog of DiaSource instances from a given region.

Parameters
----------
region : `lsst.sphgeom.Region`
    Region to search for DIASources.
object_ids : iterable [ `int` ], optional
    List of DiaObject IDs to further constrain the set of returned
    sources. If `None` then returned sources are not constrained. If
    list is empty then empty catalog is returned with a correct
    schema.
visit_time : `astropy.time.Time`
    Time of the current visit.

Returns
-------
catalog : `pandas.DataFrame`, or `None`
    Catalog containing DiaSource records. `None` is returned if
    ``read_sources_months`` configuration parameter is set to 0.

Notes
-----
This method returns DiaSource catalog for a region with additional
filtering based on DiaObject IDs. Only a subset of DiaSource history
is returned limited by ``read_sources_months`` config parameter, w.r.t.
``visit_time``. If ``object_ids`` is empty then an empty catalog is
always returned with the correct schema (columns/types). If
``object_ids`` is `None` then no filtering is performed and some of the
returned records may be outside the specified region.

Reimplemented in lsst.dax.apdb.sql.apdbSql.ApdbSql, and lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra.

Definition at line 180 of file apdb.py.

182 ) -> pandas.DataFrame | None:
183 """Return catalog of DiaSource instances from a given region.
184
185 Parameters
186 ----------
187 region : `lsst.sphgeom.Region`
188 Region to search for DIASources.
189 object_ids : iterable [ `int` ], optional
190 List of DiaObject IDs to further constrain the set of returned
191 sources. If `None` then returned sources are not constrained. If
192 list is empty then empty catalog is returned with a correct
193 schema.
194 visit_time : `astropy.time.Time`
195 Time of the current visit.
196
197 Returns
198 -------
199 catalog : `pandas.DataFrame`, or `None`
200 Catalog containing DiaSource records. `None` is returned if
201 ``read_sources_months`` configuration parameter is set to 0.
202
203 Notes
204 -----
205 This method returns DiaSource catalog for a region with additional
206 filtering based on DiaObject IDs. Only a subset of DiaSource history
207 is returned limited by ``read_sources_months`` config parameter, w.r.t.
208 ``visit_time``. If ``object_ids`` is empty then an empty catalog is
209 always returned with the correct schema (columns/types). If
210 ``object_ids`` is `None` then no filtering is performed and some of the
211 returned records may be outside the specified region.
212 """
213 raise NotImplementedError()
214

◆ getSSObjects()

pandas.DataFrame lsst.dax.apdb.apdb.Apdb.getSSObjects ( self)
Return catalog of SSObject instances.

Returns
-------
catalog : `pandas.DataFrame`
    Catalog containing SSObject records, all existing records are
    returned.

Reimplemented in lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra, and lsst.dax.apdb.sql.apdbSql.ApdbSql.

Definition at line 276 of file apdb.py.

276 def getSSObjects(self) -> pandas.DataFrame:
277 """Return catalog of SSObject instances.
278
279 Returns
280 -------
281 catalog : `pandas.DataFrame`
282 Catalog containing SSObject records, all existing records are
283 returned.
284 """
285 raise NotImplementedError()
286

◆ makeField()

ConfigurableField lsst.dax.apdb.apdb.Apdb.makeField ( cls,
str doc )
Make a `~lsst.pex.config.ConfigurableField` for Apdb.

Parameters
----------
doc : `str`
    Help text for the field.

Returns
-------
configurableField : `lsst.pex.config.ConfigurableField`
    A `~lsst.pex.config.ConfigurableField` for Apdb.

Definition at line 390 of file apdb.py.

390 def makeField(cls, doc: str) -> ConfigurableField:
391 """Make a `~lsst.pex.config.ConfigurableField` for Apdb.
392
393 Parameters
394 ----------
395 doc : `str`
396 Help text for the field.
397
398 Returns
399 -------
400 configurableField : `lsst.pex.config.ConfigurableField`
401 A `~lsst.pex.config.ConfigurableField` for Apdb.
402 """
403 return ConfigurableField(doc=doc, target=cls)
404

◆ metadata()

ApdbMetadata lsst.dax.apdb.apdb.Apdb.metadata ( self)
Object controlling access to APDB metadata (`ApdbMetadata`).

Reimplemented in lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra, and lsst.dax.apdb.sql.apdbSql.ApdbSql.

Definition at line 407 of file apdb.py.

407 def metadata(self) -> ApdbMetadata:
408 """Object controlling access to APDB metadata (`ApdbMetadata`)."""
409 raise NotImplementedError()

◆ reassignDiaSources()

None lsst.dax.apdb.apdb.Apdb.reassignDiaSources ( self,
Mapping[int, int] idMap )
Associate DiaSources with SSObjects, dis-associating them
from DiaObjects.

Parameters
----------
idMap : `Mapping`
    Maps DiaSource IDs to their new SSObject IDs.

Raises
------
ValueError
    Raised if DiaSource ID does not exist in the database.

Reimplemented in lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra, and lsst.dax.apdb.sql.apdbSql.ApdbSql.

Definition at line 346 of file apdb.py.

346 def reassignDiaSources(self, idMap: Mapping[int, int]) -> None:
347 """Associate DiaSources with SSObjects, dis-associating them
348 from DiaObjects.
349
350 Parameters
351 ----------
352 idMap : `Mapping`
353 Maps DiaSource IDs to their new SSObject IDs.
354
355 Raises
356 ------
357 ValueError
358 Raised if DiaSource ID does not exist in the database.
359 """
360 raise NotImplementedError()
361

◆ store()

None lsst.dax.apdb.apdb.Apdb.store ( self,
astropy.time.Time visit_time,
pandas.DataFrame objects,
pandas.DataFrame | None sources = None,
pandas.DataFrame | None forced_sources = None )
Store all three types of catalogs in the database.

Parameters
----------
visit_time : `astropy.time.Time`
    Time of the visit.
objects : `pandas.DataFrame`
    Catalog with DiaObject records.
sources : `pandas.DataFrame`, optional
    Catalog with DiaSource records.
forced_sources : `pandas.DataFrame`, optional
    Catalog with DiaForcedSource records.

Notes
-----
This methods takes DataFrame catalogs, their schema must be
compatible with the schema of APDB table:

  - column names must correspond to database table columns
  - types and units of the columns must match database definitions,
    no unit conversion is performed presently
  - columns that have default values in database schema can be
    omitted from catalog
  - this method knows how to fill interval-related columns of DiaObject
    (validityStart, validityEnd) they do not need to appear in a
    catalog
  - source catalogs have ``diaObjectId`` column associating sources
    with objects

This operation need not be atomic, but DiaSources and DiaForcedSources
will not be stored until all DiaObjects are stored.

Reimplemented in lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra, and lsst.dax.apdb.sql.apdbSql.ApdbSql.

Definition at line 288 of file apdb.py.

294 ) -> None:
295 """Store all three types of catalogs in the database.
296
297 Parameters
298 ----------
299 visit_time : `astropy.time.Time`
300 Time of the visit.
301 objects : `pandas.DataFrame`
302 Catalog with DiaObject records.
303 sources : `pandas.DataFrame`, optional
304 Catalog with DiaSource records.
305 forced_sources : `pandas.DataFrame`, optional
306 Catalog with DiaForcedSource records.
307
308 Notes
309 -----
310 This methods takes DataFrame catalogs, their schema must be
311 compatible with the schema of APDB table:
312
313 - column names must correspond to database table columns
314 - types and units of the columns must match database definitions,
315 no unit conversion is performed presently
316 - columns that have default values in database schema can be
317 omitted from catalog
318 - this method knows how to fill interval-related columns of DiaObject
319 (validityStart, validityEnd) they do not need to appear in a
320 catalog
321 - source catalogs have ``diaObjectId`` column associating sources
322 with objects
323
324 This operation need not be atomic, but DiaSources and DiaForcedSources
325 will not be stored until all DiaObjects are stored.
326 """
327 raise NotImplementedError()
328

◆ storeSSObjects()

None lsst.dax.apdb.apdb.Apdb.storeSSObjects ( self,
pandas.DataFrame objects )
Store or update SSObject catalog.

Parameters
----------
objects : `pandas.DataFrame`
    Catalog with SSObject records.

Notes
-----
If SSObjects with matching IDs already exist in the database, their
records will be updated with the information from provided records.

Reimplemented in lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra, and lsst.dax.apdb.sql.apdbSql.ApdbSql.

Definition at line 330 of file apdb.py.

330 def storeSSObjects(self, objects: pandas.DataFrame) -> None:
331 """Store or update SSObject catalog.
332
333 Parameters
334 ----------
335 objects : `pandas.DataFrame`
336 Catalog with SSObject records.
337
338 Notes
339 -----
340 If SSObjects with matching IDs already exist in the database, their
341 records will be updated with the information from provided records.
342 """
343 raise NotImplementedError()
344

◆ tableDef()

Table | None lsst.dax.apdb.apdb.Apdb.tableDef ( self,
ApdbTables table )
Return table schema definition for a given table.

Parameters
----------
table : `ApdbTables`
    One of the known APDB tables.

Returns
-------
tableSchema : `.schema_model.Table` or `None`
    Table schema description, `None` is returned if table is not
    defined by this implementation.

Reimplemented in lsst.dax.apdb.cassandra.apdbCassandra.ApdbCassandra, and lsst.dax.apdb.sql.apdbSql.ApdbSql.

Definition at line 139 of file apdb.py.

139 def tableDef(self, table: ApdbTables) -> Table | None:
140 """Return table schema definition for a given table.
141
142 Parameters
143 ----------
144 table : `ApdbTables`
145 One of the known APDB tables.
146
147 Returns
148 -------
149 tableSchema : `.schema_model.Table` or `None`
150 Table schema description, `None` is returned if table is not
151 defined by this implementation.
152 """
153 raise NotImplementedError()
154

Member Data Documentation

◆ ConfigClass

lsst.dax.apdb.apdb.Apdb.ConfigClass = ApdbConfig
static

Definition at line 87 of file apdb.py.


The documentation for this class was generated from the following file: