曾与蒿藜同雨露，한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.かつては雑草やヨモギと共に雨や露を分かち合っていたが、今では松やヒノキと共に霜や雪に耐えている。曾与蒿藜同雨露，Once sharing rain and dew with weeds and wormwood, now enduring frost and snow with pines and cypresses.终随松柏到冰霜.曾与蒿藜同雨露한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.，终随松柏到冰霜.譖ｾ荳手珍阯懷酔髮ｨ髴ｲ�檎ｻ磯囂譚ｾ譟丞芦蜀ｰ髴�曾与蒿藜同雨露，鏇句笌钂胯棞鍚岄洦闇诧紝缁堥殢鏉炬煆鍒板啺闇�终随松柏到冰霜.曾与蒿藜同雨露，한때 잡초와 쑥과 함께 비와 이슬을 나누던 곳이 이제는 소나무와 삼나무와 함께 서리와 눈을 견뎌내고 있다.终随松柏到冰霜.曾与蒿藜同雨露，终随松柏到冰霜. rahbord-ins.ir - GrazzMean-Shell
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name : toimpl.py 
from . import ops

from . import Operations
from sqlalchemy import schema as sa_schema


@Operations.implementation_for(ops.AlterColumnOp)
def alter_column(operations, operation):

    compiler = operations.impl.dialect.statement_compiler(
        operations.impl.dialect,
        None
    )

    existing_type = operation.existing_type
    existing_nullable = operation.existing_nullable
    existing_server_default = operation.existing_server_default
    type_ = operation.modify_type
    column_name = operation.column_name
    table_name = operation.table_name
    schema = operation.schema
    server_default = operation.modify_server_default
    new_column_name = operation.modify_name
    nullable = operation.modify_nullable

    def _count_constraint(constraint):
        return not isinstance(
            constraint,
            sa_schema.PrimaryKeyConstraint) and \
            (not constraint._create_rule or
                constraint._create_rule(compiler))

    if existing_type and type_:
        t = operations.schema_obj.table(
            table_name,
            sa_schema.Column(column_name, existing_type),
            schema=schema
        )
        for constraint in t.constraints:
            if _count_constraint(constraint):
                operations.impl.drop_constraint(constraint)

    operations.impl.alter_column(
        table_name, column_name,
        nullable=nullable,
        server_default=server_default,
        name=new_column_name,
        type_=type_,
        schema=schema,
        existing_type=existing_type,
        existing_server_default=existing_server_default,
        existing_nullable=existing_nullable,
        **operation.kw
    )

    if type_:
        t = operations.schema_obj.table(
            table_name,
            operations.schema_obj.column(column_name, type_),
            schema=schema
        )
        for constraint in t.constraints:
            if _count_constraint(constraint):
                operations.impl.add_constraint(constraint)


@Operations.implementation_for(ops.DropTableOp)
def drop_table(operations, operation):
    operations.impl.drop_table(
        operation.to_table(operations.migration_context)
    )


@Operations.implementation_for(ops.DropColumnOp)
def drop_column(operations, operation):
    column = operation.to_column(operations.migration_context)
    operations.impl.drop_column(
        operation.table_name,
        column,
        schema=operation.schema,
        **operation.kw
    )


@Operations.implementation_for(ops.CreateIndexOp)
def create_index(operations, operation):
    idx = operation.to_index(operations.migration_context)
    operations.impl.create_index(idx)


@Operations.implementation_for(ops.DropIndexOp)
def drop_index(operations, operation):
    operations.impl.drop_index(
        operation.to_index(operations.migration_context)
    )


@Operations.implementation_for(ops.CreateTableOp)
def create_table(operations, operation):
    table = operation.to_table(operations.migration_context)
    operations.impl.create_table(table)
    return table


@Operations.implementation_for(ops.RenameTableOp)
def rename_table(operations, operation):
    operations.impl.rename_table(
        operation.table_name,
        operation.new_table_name,
        schema=operation.schema)


@Operations.implementation_for(ops.AddColumnOp)
def add_column(operations, operation):
    table_name = operation.table_name
    column = operation.column
    schema = operation.schema

    t = operations.schema_obj.table(table_name, column, schema=schema)
    operations.impl.add_column(
        table_name,
        column,
        schema=schema
    )
    for constraint in t.constraints:
        if not isinstance(constraint, sa_schema.PrimaryKeyConstraint):
            operations.impl.add_constraint(constraint)
    for index in t.indexes:
        operations.impl.create_index(index)


@Operations.implementation_for(ops.AddConstraintOp)
def create_constraint(operations, operation):
    operations.impl.add_constraint(
        operation.to_constraint(operations.migration_context)
    )


@Operations.implementation_for(ops.DropConstraintOp)
def drop_constraint(operations, operation):
    operations.impl.drop_constraint(
        operations.schema_obj.generic_constraint(
            operation.constraint_name,
            operation.table_name,
            operation.constraint_type,
            schema=operation.schema,
        )
    )


@Operations.implementation_for(ops.BulkInsertOp)
def bulk_insert(operations, operation):
    operations.impl.bulk_insert(
        operation.table, operation.rows, multiinsert=operation.multiinsert)


@Operations.implementation_for(ops.ExecuteSQLOp)
def execute_sql(operations, operation):
    operations.migration_context.impl.execute(
        operation.sqltext,
        execution_options=operation.execution_options
    )
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