107 lines
4 KiB
Python
107 lines
4 KiB
Python
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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"""
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Exceptions/Errors used in Koalas.
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"""
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class DataError(Exception):
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pass
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class SparkPandasIndexingError(Exception):
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pass
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def code_change_hint(pandas_function, spark_target_function):
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if pandas_function is not None and spark_target_function is not None:
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return "You are trying to use pandas function {}, use spark function {}".format(
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pandas_function, spark_target_function
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)
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elif pandas_function is not None and spark_target_function is None:
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return (
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"You are trying to use pandas function {}, checkout the spark "
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"user guide to find a relevant function"
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).format(pandas_function)
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elif pandas_function is None and spark_target_function is not None:
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return "Use spark function {}".format(spark_target_function)
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else: # both none
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return "Checkout the spark user guide to find a relevant function"
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class SparkPandasNotImplementedError(NotImplementedError):
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def __init__(self, pandas_function=None, spark_target_function=None, description=""):
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self.pandas_source = pandas_function
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self.spark_target = spark_target_function
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hint = code_change_hint(pandas_function, spark_target_function)
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if len(description) > 0:
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description += " " + hint
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else:
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description = hint
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super().__init__(description)
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class PandasNotImplementedError(NotImplementedError):
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def __init__(
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self,
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class_name,
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method_name=None,
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arg_name=None,
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property_name=None,
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deprecated=False,
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reason="",
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):
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assert (method_name is None) != (property_name is None)
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self.class_name = class_name
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self.method_name = method_name
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self.arg_name = arg_name
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if method_name is not None:
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if arg_name is not None:
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msg = "The method `{0}.{1}()` does not support `{2}` parameter. {3}".format(
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class_name, method_name, arg_name, reason
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)
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else:
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if deprecated:
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msg = (
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"The method `{0}.{1}()` is deprecated in pandas and will therefore "
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+ "not be supported in Koalas. {2}"
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).format(class_name, method_name, reason)
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else:
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if reason == "":
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reason = " yet."
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else:
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reason = ". " + reason
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msg = "The method `{0}.{1}()` is not implemented{2}".format(
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class_name, method_name, reason
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)
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else:
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if deprecated:
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msg = (
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"The property `{0}.{1}()` is deprecated in pandas and will therefore "
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+ "not be supported in Koalas. {2}"
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).format(class_name, property_name, reason)
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else:
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if reason == "":
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reason = " yet."
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else:
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reason = ". " + reason
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msg = "The property `{0}.{1}()` is not implemented{2}".format(
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class_name, property_name, reason
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)
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super().__init__(msg)
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