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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
import pytest
from pyiceberg.schema import Schema
from pyiceberg.table.name_mapping import (
MappedField,
NameMapping,
create_mapping_from_schema,
parse_mapping_from_json,
update_mapping,
)
from pyiceberg.types import NestedField, StringType
@pytest.fixture(scope="session")
def table_name_mapping_nested() -> NameMapping:
return NameMapping([
MappedField(field_id=1, names=["foo"]),
MappedField(field_id=2, names=["bar"]),
MappedField(field_id=3, names=["baz"]),
MappedField(field_id=4, names=["qux"], fields=[MappedField(field_id=5, names=["element"])]),
MappedField(
field_id=6,
names=["quux"],
fields=[
MappedField(field_id=7, names=["key"]),
MappedField(
field_id=8,
names=["value"],
fields=[
MappedField(field_id=9, names=["key"]),
MappedField(field_id=10, names=["value"]),
],
),
],
),
MappedField(
field_id=11,
names=["location"],
fields=[
MappedField(
field_id=12,
names=["element"],
fields=[
MappedField(field_id=13, names=["latitude"]),
MappedField(field_id=14, names=["longitude"]),
],
)
],
),
MappedField(
field_id=15,
names=["person"],
fields=[
MappedField(field_id=16, names=["name"]),
MappedField(field_id=17, names=["age"]),
],
),
])
def test_json_mapped_field_deserialization() -> None:
mapped_field = """{
"field-id": 1,
"names": ["id", "record_id"]
}
"""
assert MappedField(field_id=1, names=["id", "record_id"]) == MappedField.model_validate_json(mapped_field)
mapped_field_with_null_fields = """{
"field-id": 1,
"names": ["id", "record_id"],
"fields": null
}
"""
assert MappedField(field_id=1, names=["id", "record_id"]) == MappedField.model_validate_json(mapped_field_with_null_fields)
def test_json_name_mapping_deserialization() -> None:
name_mapping = """
[
{
"field-id": 1,
"names": [
"id",
"record_id"
]
},
{
"field-id": 2,
"names": [
"data"
]
},
{
"field-id": 3,
"names": [
"location"
],
"fields": [
{
"field-id": 4,
"names": [
"latitude",
"lat"
]
},
{
"field-id": 5,
"names": [
"longitude",
"long"
]
}
]
}
]
"""
assert parse_mapping_from_json(name_mapping) == NameMapping([
MappedField(field_id=1, names=["id", "record_id"]),
MappedField(field_id=2, names=["data"]),
MappedField(
names=["location"],
field_id=3,
fields=[
MappedField(field_id=4, names=["latitude", "lat"]),
MappedField(field_id=5, names=["longitude", "long"]),
],
),
])
def test_json_serialization(table_name_mapping_nested: NameMapping) -> None:
assert (
table_name_mapping_nested.model_dump_json()
== """[{"field-id":1,"names":["foo"]},{"field-id":2,"names":["bar"]},{"field-id":3,"names":["baz"]},{"field-id":4,"names":["qux"],"fields":[{"field-id":5,"names":["element"]}]},{"field-id":6,"names":["quux"],"fields":[{"field-id":7,"names":["key"]},{"field-id":8,"names":["value"],"fields":[{"field-id":9,"names":["key"]},{"field-id":10,"names":["value"]}]}]},{"field-id":11,"names":["location"],"fields":[{"field-id":12,"names":["element"],"fields":[{"field-id":13,"names":["latitude"]},{"field-id":14,"names":["longitude"]}]}]},{"field-id":15,"names":["person"],"fields":[{"field-id":16,"names":["name"]},{"field-id":17,"names":["age"]}]}]"""
)
def test_name_mapping_to_string() -> None:
nm = NameMapping([
MappedField(field_id=1, names=["id", "record_id"]),
MappedField(field_id=2, names=["data"]),
MappedField(
names=["location"],
field_id=3,
fields=[
MappedField(field_id=4, names=["lat", "latitude"]),
MappedField(field_id=5, names=["long", "longitude"]),
],
),
])
assert (
str(nm)
== """[
([id, record_id] -> 1)
([data] -> 2)
([location] -> 3 ([lat, latitude] -> 4), ([long, longitude] -> 5))
]"""
)
def test_mapping_from_schema(table_schema_nested: Schema, table_name_mapping_nested: NameMapping) -> None:
nm = create_mapping_from_schema(table_schema_nested)
assert nm == table_name_mapping_nested
def test_mapping_by_name(table_name_mapping_nested: NameMapping) -> None:
assert table_name_mapping_nested._field_by_name == {
"person.age": MappedField(field_id=17, names=["age"]),
"person.name": MappedField(field_id=16, names=["name"]),
"person": MappedField(
field_id=15,
names=["person"],
fields=[MappedField(field_id=16, names=["name"]), MappedField(field_id=17, names=["age"])],
),
"location.element.longitude": MappedField(field_id=14, names=["longitude"]),
"location.element.latitude": MappedField(field_id=13, names=["latitude"]),
"location.element": MappedField(
field_id=12,
names=["element"],
fields=[MappedField(field_id=13, names=["latitude"]), MappedField(field_id=14, names=["longitude"])],
),
"location": MappedField(
field_id=11,
names=["location"],
fields=[
MappedField(
field_id=12,
names=["element"],
fields=[MappedField(field_id=13, names=["latitude"]), MappedField(field_id=14, names=["longitude"])],
)
],
),
"quux.value.value": MappedField(field_id=10, names=["value"]),
"quux.value.key": MappedField(field_id=9, names=["key"]),
"quux.value": MappedField(
field_id=8,
names=["value"],
fields=[MappedField(field_id=9, names=["key"]), MappedField(field_id=10, names=["value"])],
),
"quux.key": MappedField(field_id=7, names=["key"]),
"quux": MappedField(
field_id=6,
names=["quux"],
fields=[
MappedField(field_id=7, names=["key"]),
MappedField(
field_id=8,
names=["value"],
fields=[MappedField(field_id=9, names=["key"]), MappedField(field_id=10, names=["value"])],
),
],
),
"qux.element": MappedField(field_id=5, names=["element"]),
"qux": MappedField(field_id=4, names=["qux"], fields=[MappedField(field_id=5, names=["element"])]),
"baz": MappedField(field_id=3, names=["baz"]),
"bar": MappedField(field_id=2, names=["bar"]),
"foo": MappedField(field_id=1, names=["foo"]),
}
def test_mapping_lookup_by_name(table_name_mapping_nested: NameMapping) -> None:
assert table_name_mapping_nested.find("foo") == MappedField(field_id=1, names=["foo"])
assert table_name_mapping_nested.find("location.element.latitude") == MappedField(field_id=13, names=["latitude"])
assert table_name_mapping_nested.find("location", "element", "latitude") == MappedField(field_id=13, names=["latitude"])
assert table_name_mapping_nested.find(*["location", "element", "latitude"]) == MappedField(field_id=13, names=["latitude"])
with pytest.raises(ValueError, match="Could not find field with name: boom"):
table_name_mapping_nested.find("boom")
def test_invalid_mapped_field() -> None:
with pytest.raises(ValueError):
MappedField(field_id=1, names=[])
def test_update_mapping_no_updates_or_adds(table_name_mapping_nested: NameMapping) -> None:
assert update_mapping(table_name_mapping_nested, {}, {}) == table_name_mapping_nested
def test_update_mapping(table_name_mapping_nested: NameMapping) -> None:
updates = {1: NestedField(1, "foo_update", StringType(), True)}
adds = {
-1: [NestedField(18, "add_18", StringType(), True)],
15: [NestedField(19, "name", StringType(), True), NestedField(20, "add_20", StringType(), True)],
}
expected = NameMapping([
MappedField(field_id=1, names=["foo", "foo_update"]),
MappedField(field_id=2, names=["bar"]),
MappedField(field_id=3, names=["baz"]),
MappedField(field_id=4, names=["qux"], fields=[MappedField(field_id=5, names=["element"])]),
MappedField(
field_id=6,
names=["quux"],
fields=[
MappedField(field_id=7, names=["key"]),
MappedField(
field_id=8,
names=["value"],
fields=[
MappedField(field_id=9, names=["key"]),
MappedField(field_id=10, names=["value"]),
],
),
],
),
MappedField(
field_id=11,
names=["location"],
fields=[
MappedField(
field_id=12,
names=["element"],
fields=[
MappedField(field_id=13, names=["latitude"]),
MappedField(field_id=14, names=["longitude"]),
],
)
],
),
MappedField(
field_id=15,
names=["person"],
fields=[
MappedField(field_id=17, names=["age"]),
MappedField(field_id=19, names=["name"]),
MappedField(field_id=20, names=["add_20"]),
],
),
MappedField(field_id=18, names=["add_18"]),
])
assert update_mapping(table_name_mapping_nested, updates, adds) == expected
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