catalog.py

from .delegate import Delegate
from csst_dfs_commons.models import Result
from csst_dfs_api.common.utils import to_table as to_fits_table

class CatalogApi(object):
    def __init__(self):
        self.module = Delegate().load(sub_module = "common")
        self.stub = getattr(self.module, "CatalogApi")()
    
    def catalog_query(self, ra: float, dec: float, radius: float, catalog_name: str, columns: tuple, min_mag: float,  max_mag: float,  obstime: int, limit: int):
        ''' retrieval catalog

        :param ra: in deg
        :param dec:  in deg
        :param radius:  in deg
        :param catalog_name: one of ['gaia3','sim']
        :param columns: tuple of str, like ('ra','dec','phot_g_mean_mag')
        :param min_mag: minimal magnitude
        :param max_mag: maximal magnitude
        :param obstime: seconds  
        :param limit: limits returns the number of records

        :returns: csst_dfs_common.models.Result
        '''
        if not catalog_name or catalog_name not in ('gaia3', 'sim'):
            raise Exception("catalog_name is not allowed")
        if not columns:
            raise Exception("columns is empty")
        return self.catalog_query(ra = ra,
                                dec = dec, 
                                radius = radius, 
                                catalog_name = catalog_name,
                                columns = columns, 
                                min_mag = min_mag, 
                                max_mag = max_mag, 
                                obstime = obstime, 
                                limit = limit)

    def to_table(self, query_result):
        return to_fits_table(query_result)