b7e09b55-9333-4c49-b273-87a69e5c463f

# coding=utf-8
# Copyright 2018-2023 EvaDB
#
# Licensed 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.
from evadb.expression.abstract_expression import AbstractExpression
from evadb.parser.statement import AbstractStatement
from evadb.parser.table_ref import TableRef
from evadb.parser.types import StatementType


class DeleteTableStatement(AbstractStatement):
    """Delete Table Statement constructed after parsing the input query

    Attributes:
        TableRef: table reference in the delete table statement
        _where_clause : predicate of the select query, represented as a expression tree.
    """

    def __init__(
        self,
        table_ref: TableRef,
        where_clause: AbstractExpression = None,
    ):
        super().__init__(StatementType.DELETE)
        self._table_ref = table_ref
        self._where_clause = where_clause

    def __str__(self) -> str:
        delete_str = f"DELETE FROM {self._table_ref}"
        if self._where_clause is not None:
            delete_str += " WHERE " + str(self._where_clause)

        return delete_str

    @property
    def table_ref(self):
        return self._table_ref

    @property
    def where_clause(self):
        return self._where_clause

    def __eq__(self, other):
        if not isinstance(other, DeleteTableStatement):
            return False
        return (
            self._table_ref == other._table_ref
            and self.where_clause == other.where_clause
        )

    def __hash__(self) -> int:
        return hash((super().__hash__(), self._table_ref, self.where_clause))

1	# coding=utf-8
2	# Copyright 2018-2023 EvaDB
3	#
4	# Licensed under the Apache License, Version 2.0 (the "License");
5	# you may not use this file except in compliance with the License.
6	# You may obtain a copy of the License at
7	#
8	# http://www.apache.org/licenses/LICENSE-2.0
9	#
10	# Unless required by applicable law or agreed to in writing, software
11	# distributed under the License is distributed on an "AS IS" BASIS,
12	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	# See the License for the specific language governing permissions and
14	# limitations under the License.
15	from evadb.expression.abstract_expression import AbstractExpression	1✔
16	from evadb.parser.statement import AbstractStatement	1✔
17	from evadb.parser.table_ref import TableRef	1✔
18	from evadb.parser.types import StatementType	1✔
19
20
21	class DeleteTableStatement(AbstractStatement):	1✔
22	"""Delete Table Statement constructed after parsing the input query
23
24	Attributes:
25	TableRef: table reference in the delete table statement
26	_where_clause : predicate of the select query, represented as a expression tree.
27	"""
28
29	def __init__(	1✔
30	self,
31	table_ref: TableRef,
32	where_clause: AbstractExpression = None,
33	):
34	super().__init__(StatementType.DELETE)	1✔
35	self._table_ref = table_ref	1✔
36	self._where_clause = where_clause	1✔
37
38	def __str__(self) -> str:	1✔
39	delete_str = f"DELETE FROM {self._table_ref}"	1✔
40	if self._where_clause is not None:	1✔
41	delete_str += " WHERE " + str(self._where_clause)	1✔
42
43	return delete_str	1✔
44
45	@property	1✔
46	def table_ref(self):	1✔
47	return self._table_ref	×
48
49	@property	1✔
50	def where_clause(self):	1✔
51	return self._where_clause	1✔
52
53	def __eq__(self, other):	1✔
54	if not isinstance(other, DeleteTableStatement):	1✔
55	return False	1✔
56	return (	1✔
57	self._table_ref == other._table_ref
58	and self.where_clause == other.where_clause
59	)
60
61	def __hash__(self) -> int:	1✔
62	return hash((super().__hash__(), self._table_ref, self.where_clause))	1✔

georgia-tech-db / eva / b7e09b55-9333-4c49-b273-87a69e5c463f

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