SLAQuery

class pyvo.dal.SLAQuery(baseurl, wavelength=None, *, request='queryData', session=None)

Bases: DALQuery

a class for preparing an query to an SLA service. Query constraints are added via its service type-specific methods. The various execute() functions will submit the query and return the results.

The base URL for the query, which controls where the query will be sent when one of the execute functions is called, is typically set at construction time; however, it can be updated later via the baseurl to send a configured query to another service.

In addition to the search constraint attributes described below, search parameters can be set generically by name via the dict semantics.

The typical function for submitting the query is execute(); however, alternate execute functions provide the response in different forms, allowing the caller to take greater control of the result processing.

initialize the query object with a baseurl and the given parameters

Parameters

baseurlstr

the base URL for the SLA service

wavelengthQuantity class or sequence of two floats

the bandwidth range the observations belong to. assuming meters if unit is not specified.

sessionobject

optional session to use for network requests

Attributes Summary

request	the type of service operation which is being performed
wavelength	the frequency/wavelength range the observations belong to.

Methods Summary

execute()

submit the query and return the results as a SLAResults instance

Attributes Documentation

request

the type of service operation which is being performed

wavelength

the frequency/wavelength range the observations belong to.

Methods Documentation

execute()

submit the query and return the results as a SLAResults instance

Raises

DALServiceError

for errors connecting to or communicating with the service

DALQueryError

for errors either in the input query syntax or other user errors detected by the service

DALFormatError

for errors parsing the VOTable response