Add default column to properties

benchmarks/benchmarks.py

@@ -33,7 +33,6 @@ def time_test_cone_filter_multiple_order():
             "catalog_name": "test_name",
             "catalog_type": "object",
             "total_rows": 10,
-            "epoch": "J2000",
             "ra_column": "ra",
             "dec_column": "dec",
         }

src/hats/catalog/__init__.py

@@ -1,6 +1,7 @@
 """Catalog data wrappers"""
 
 from .association_catalog import AssociationCatalog
+from .association_catalog.partition_join_info import PartitionJoinInfo
 from .catalog import Catalog
 from .catalog_type import CatalogType
 from .dataset.dataset import Dataset

src/hats/catalog/dataset/table_properties.py

@@ -12,8 +12,8 @@
 
 ## catalog_name, catalog_type, and total_rows are allowed for ALL types
 CATALOG_TYPE_ALLOWED_FIELDS = {
-    CatalogType.OBJECT: ["ra_column", "dec_column"],
-    CatalogType.SOURCE: ["primary_catalog", "ra_column", "dec_column"],
+    CatalogType.OBJECT: ["ra_column", "dec_column", "default_columns"],
+    CatalogType.SOURCE: ["primary_catalog", "ra_column", "dec_column", "default_columns"],
     CatalogType.ASSOCIATION: [
         "primary_catalog",
         "primary_column",
@@ -24,7 +24,7 @@
         "contains_leaf_files",
     ],
     CatalogType.INDEX: ["primary_catalog", "indexing_column", "extra_columns"],
-    CatalogType.MARGIN: ["primary_catalog", "margin_threshold", "ra_column", "dec_column"],
+    CatalogType.MARGIN: ["primary_catalog", "margin_threshold", "ra_column", "dec_column", "default_columns"],
 }
 
 ## catalog_name, catalog_type, and total_rows are required for ALL types
@@ -42,6 +42,41 @@
     CatalogType.MARGIN: ["primary_catalog", "margin_threshold"],
 }
 
+# All additional properties in the HATS recommendation.
+EXTRA_ALLOWED_FIELDS = [
+    "addendum_did",
+    "bib_reference",
+    "bib_reference_url",
+    "creator_did",
+    "data_ucd",
+    "hats_builder",
+    "hats_cols_sort",
+    "hats_cols_survey_id",
+    "hats_copyright",
+    "hats_creation_date",
+    "hats_creator",
+    "hats_estsize",
+    "hats_frame",
+    "hats_max_rows",
+    "hats_order",
+    "hats_progenitor_url",
+    "hats_release_date",
+    "hats_service_url",
+    "hats_status",
+    "hats_version",
+    "moc_sky_fraction",
+    "obs_ack",
+    "obs_copyright",
+    "obs_copyright_url",
+    "obs_description",
+    "obs_regime",
+    "obs_title",
+    "prov_progenitor",
+    "publisher_id",
+    "t_max",
+    "t_min",
+]
+
 
 class TableProperties(BaseModel):
     """Container class for catalog metadata"""
@@ -52,6 +87,8 @@
 
     ra_column: Optional[str] = Field(default=None, alias="hats_col_j2000_ra")
     dec_column: Optional[str] = Field(default=None, alias="hats_col_j2000_dec")
+    default_columns: Optional[List[str]] = Field(default=None, alias="hats_cols_default")
+    """Which columns should be read from parquet files, when user doesn't otherwise specify."""
 
     primary_catalog: Optional[str] = Field(default=None, alias="hats_primary_table_url")
     """Reference to object catalog. Relevant for nested, margin, association, and index."""
@@ -86,7 +123,7 @@
     ## Allow any extra keyword args to be stored on the properties object.
     model_config = ConfigDict(extra="allow", populate_by_name=True, use_enum_values=True)
 
-    @field_validator("extra_columns", mode="before")
+    @field_validator("default_columns", "extra_columns", mode="before")
     @classmethod
     def space_delimited_list(cls, str_value: str) -> List[str]:
         """Convert a space-delimited list string into a python list of strings."""
@@ -95,9 +132,11 @@
             return list(filter(None, re.split(";| |,|\n", str_value)))
         return str_value
 
-    @field_serializer("extra_columns")
+    @field_serializer("default_columns", "extra_columns")
     def serialize_as_space_delimited_list(self, str_list: Iterable[str]) -> str:
         """Convert a python list of strings into a space-delimited string."""
+        if str_list is None:
+            return None
         return " ".join(str_list)
 
     @model_validator(mode="after")
@@ -122,8 +161,18 @@
             raise ValueError(
                 f"Missing required property for table type {self.catalog_type}: {missing_required}"
             )
+
+        # Check against all known properties - catches typos.
+        non_allowed = set(self.__pydantic_extra__.keys()) - set(EXTRA_ALLOWED_FIELDS)
+        if len(non_allowed) > 0:
+            raise ValueError(f"Unexpected extra property: {non_allowed}")
         return self
 
+    def copy_and_update(self, **kwargs):
+        new_properties = self.model_copy(update=kwargs)
+        TableProperties.model_validate(new_properties)
+        return new_properties
+
     def explicit_dict(self):
         """Create a dict, based on fields that have been explicitly set, and are not "extra" keys."""
         explicit = self.model_dump(by_alias=False, exclude_none=True)

src/hats/catalog/partition_info.py

@@ -11,6 +11,7 @@
 import pyarrow as pa
 from upath import UPath
 
+import hats.pixel_math.healpix_shim as hp
 from hats.io import file_io, paths
 from hats.io.parquet_metadata import (
     read_row_group_fragments,
@@ -24,7 +25,6 @@ class PartitionInfo:
     """Container class for per-partition info."""
 
     METADATA_ORDER_COLUMN_NAME = "Norder"
-    METADATA_DIR_COLUMN_NAME = "Dir"
     METADATA_PIXEL_COLUMN_NAME = "Npix"
 
     def __init__(self, pixel_list: List[HealpixPixel], catalog_base_dir: str = None) -> None:
@@ -98,10 +98,9 @@ def write_to_metadata_files(self, catalog_path: str | Path | UPath | None = None
         batches = [
             [
                 pa.RecordBatch.from_arrays(
-                    [[pixel.order], [pixel.dir], [pixel.pixel]],
+                    [[pixel.order], [pixel.pixel]],
                     names=[
                         self.METADATA_ORDER_COLUMN_NAME,
-                        self.METADATA_DIR_COLUMN_NAME,
                         self.METADATA_PIXEL_COLUMN_NAME,
                     ],
                 )
@@ -254,12 +253,10 @@ def as_dataframe(self):
         partition_info_dict = {
             PartitionInfo.METADATA_ORDER_COLUMN_NAME: [],
             PartitionInfo.METADATA_PIXEL_COLUMN_NAME: [],
-            PartitionInfo.METADATA_DIR_COLUMN_NAME: [],
         }
         for pixel in self.pixel_list:
             partition_info_dict[PartitionInfo.METADATA_ORDER_COLUMN_NAME].append(pixel.order)
             partition_info_dict[PartitionInfo.METADATA_PIXEL_COLUMN_NAME].append(pixel.pixel)
-            partition_info_dict[PartitionInfo.METADATA_DIR_COLUMN_NAME].append(pixel.dir)
         return pd.DataFrame.from_dict(partition_info_dict)
 
     @classmethod
@@ -272,3 +269,12 @@ def from_healpix(cls, healpix_pixels: List[HealpixPixel]) -> PartitionInfo:
             A `PartitionInfo` object with the same healpix pixels
         """
         return cls(healpix_pixels)
+
+    def calculate_fractional_coverage(self):
+        """Calculate what fraction of the sky is covered by partition tiles."""
+        pixel_orders = [p.order for p in self.pixel_list]
+        cov_order, cov_count = np.unique(pixel_orders, return_counts=True)
+        area_by_order = [hp.nside2pixarea(hp.order2nside(order), degrees=True) for order in cov_order]
+        # 41253 is the number of square degrees in a sphere
+        # https://en.wikipedia.org/wiki/Square_degree
+        return (area_by_order * cov_count).sum() / 41253

src/hats/io/__init__.py

@@ -15,4 +15,3 @@
     pixel_catalog_file,
     pixel_directory,
 )
-from .write_metadata import write_partition_info

src/hats/io/paths.py

@@ -13,12 +13,13 @@
 from hats.io.file_io.file_pointer import get_upath
 from hats.pixel_math.healpix_pixel import INVALID_PIXEL, HealpixPixel
 
-ORDER_DIRECTORY_PREFIX = "Norder"
-DIR_DIRECTORY_PREFIX = "Dir"
-PIXEL_DIRECTORY_PREFIX = "Npix"
-JOIN_ORDER_DIRECTORY_PREFIX = "join_Norder"
-JOIN_DIR_DIRECTORY_PREFIX = "join_Dir"
-JOIN_PIXEL_DIRECTORY_PREFIX = "join_Npix"
+PARTITION_ORDER = "Norder"
+PARTITION_DIR = "Dir"
+PARTITION_PIXEL = "Npix"
+
+MARGIN_ORDER = "margin_Norder"
+MARGIN_DIR = "margin_Dir"
+MARGIN_PIXEL = "margin_Npix"
 
 PARTITION_INFO_FILENAME = "partition_info.csv"
 PARTITION_JOIN_INFO_FILENAME = "partition_join_info.csv"
@@ -62,7 +63,7 @@ def pixel_directory(
         raise ValueError("One of pixel_number or directory_number is required to create pixel directory")
     return create_hive_directory_name(
         catalog_base_dir,
-        [ORDER_DIRECTORY_PREFIX, DIR_DIRECTORY_PREFIX],
+        [PARTITION_ORDER, PARTITION_DIR],
         [norder, ndir],
     )
 
@@ -127,9 +128,9 @@ def pixel_catalog_files(
         base_path
         + fs.sep.join(
             [
-                f"{ORDER_DIRECTORY_PREFIX}={pixel.order}",
-                f"{DIR_DIRECTORY_PREFIX}={pixel.dir}",
-                f"{PIXEL_DIRECTORY_PREFIX}={pixel.pixel}.parquet" + url_params,
+                f"{PARTITION_ORDER}={pixel.order}",
+                f"{PARTITION_DIR}={pixel.dir}",
+                f"{PARTITION_PIXEL}={pixel.pixel}.parquet" + url_params,
             ]
         )
         for pixel in pixels
@@ -193,9 +194,9 @@ def pixel_catalog_file(
 
     return (
         catalog_base_dir
-        / f"{ORDER_DIRECTORY_PREFIX}={pixel.order}"
-        / f"{DIR_DIRECTORY_PREFIX}={pixel.dir}"
-        / f"{PIXEL_DIRECTORY_PREFIX}={pixel.pixel}.parquet{url_params}"
+        / f"{PARTITION_ORDER}={pixel.order}"
+        / f"{PARTITION_DIR}={pixel.dir}"
+        / f"{PARTITION_PIXEL}={pixel.pixel}.parquet{url_params}"
     )
 
 

tests/conftest.py

@@ -53,7 +53,6 @@ def catalog_info_data() -> dict:
         "catalog_name": "test_name",
         "catalog_type": "object",
         "total_rows": 10,
-        "epoch": "J2000",
         "ra_column": "ra",
         "dec_column": "dec",
     }
@@ -91,7 +90,6 @@ def source_catalog_info() -> dict:
         "catalog_name": "test_source",
         "catalog_type": "source",
         "total_rows": 100,
-        "epoch": "J2000",
         "ra_column": "source_ra",
         "dec_column": "source_dec",
     }
@@ -103,7 +101,6 @@ def margin_cache_catalog_info_data() -> dict:
         "catalog_name": "test_margin",
         "catalog_type": "margin",
         "total_rows": 100,
-        "epoch": "J2000",
         "ra_column": "ra",
         "dec_column": "dec",
         "primary_catalog": "test_name",

tests/data/almanac/small_sky.yml

@@ -4,7 +4,6 @@ catalog_path: $HATS_DEFAULT_DIR/small_sky
 catalog_info:
   catalog_name: small_sky
   catalog_type: object
-  epoch: J2000
   ra_column: ra
   dec_column: dec
   total_rows: 131

tests/data/almanac/small_sky_order1_margin.yml

@@ -7,7 +7,6 @@ catalog_info:
   catalog_name: small_sky_order1_margin
   catalog_type: margin
   total_rows: 28
-  epoch: J2000
   ra_column: ra
   dec_column: dec
   primary_catalog: small_sky_order1

tests/data/almanac/small_sky_source.yml

@@ -5,7 +5,6 @@ catalog_info:
   catalog_name: small_sky_source
   catalog_type: source
   total_rows: 17161
-  epoch: J2000
   ra_column: source_ra
   dec_column: source_dec
   primary_catalog: small_sky

tests/data/almanac_exception/margin_missing_primary.yml

@@ -5,7 +5,6 @@ catalog_info:
   catalog_name: margin_cache
   catalog_type: margin
   total_rows: 100
-  epoch: J2000
   ra_column: ra
   dec_column: dec
   primary_catalog: NOT_A_CATALOG

tests/data/almanac_exception/standalone_source_catalog.yml

@@ -5,7 +5,6 @@ catalog_info:
   catalog_name: small_sky_source
   catalog_type: source
   total_rows: 17161
-  epoch: J2000
   ra_column: source_ra
   dec_column: source_dec
   mjd_column: mjd

tests/data/info_only/catalog/properties

@@ -4,5 +4,6 @@ dataproduct_type=object
 hats_nrows=10
 hats_col_j2000_ra=ra
 hats_col_j2000_dec=dec
+hats_cols_default=psf mean_mag_r
 hats_max_rows=1000
 hats_order=0