Python types.BOOLEAN属性代码示例

# 需要导入模块: from sqlalchemy import types [as 别名]
# 或者: from sqlalchemy.types import BOOLEAN [as 别名]
def str_to_sqltype(expr):
    import re
    import sqlalchemy.types as sqltypes
    norm_expr = expr.lower()
    if norm_expr.startswith('integer'):
        match_result = re.match(r'integer\((\d+)\)', norm_expr)
        if match_result is not None:
            return sqltypes.BIGINT() if int(match_result.group(1)) > 11 else sqltypes.INTEGER()
        return sqltypes.BIGINT()
    if norm_expr == 'decimal':
        return sqltypes.DECIMAL()
    if norm_expr == 'date':
        return sqltypes.DATETIME()
    if norm_expr == 'bool' or norm_expr == 'boolean':
        return sqltypes.BOOLEAN()
    if norm_expr.startswith('string'):
        match_result = re.match(r'string\((\d+)\)', norm_expr)
        if match_result is not None:
            maxlen = int(match_result.group(1))
            return sqltypes.VARCHAR(maxlen) if maxlen < 65536 else sqltypes.TEXT
        return sqltypes.TEXT()
    raise RuntimeError("Unsupported data type [" + expr + "]") 

# 需要导入模块: from sqlalchemy import types [as 别名]
# 或者: from sqlalchemy.types import BOOLEAN [as 别名]
def sqltype_to_stdtype(sqltype):
    import sqlalchemy.types as sqltypes
    if isinstance(sqltype, (sqltypes.VARCHAR, sqltypes.CHAR, sqltypes.TEXT, sqltypes.Enum, sqltypes.String)):
        return _STRING_TYPE
    if isinstance(sqltype, (sqltypes.DATETIME, sqltypes.DATE, sqltypes.TIME, sqltypes.TIMESTAMP)):
        return _DATE_TYPE
    if isinstance(sqltype, (sqltypes.INTEGER, sqltypes.BIGINT, sqltypes.SMALLINT, sqltypes.Integer)):
        return _INTEGER_TYPE
    if isinstance(sqltype, (sqltypes.REAL, sqltypes.DECIMAL, sqltypes.NUMERIC, sqltypes.FLOAT)):
        return _DECIMAL_TYPE
    if isinstance(sqltype, sqltypes.BOOLEAN):
        return _BOOLEAN_TYPE 

# 需要导入模块: from sqlalchemy import types [as 别名]
# 或者: from sqlalchemy.types import BOOLEAN [as 别名]
def stdtype_to_sqltype(stdtype):
    import sqlalchemy.types as sqltypes
    if isinstance(stdtype, stdtypes.StringType):
        return sqltypes.VARCHAR(length=stdtype.max_len) if 0 < stdtype.max_len < 65536 else sqltypes.TEXT()
    if isinstance(stdtype, stdtypes.BoolType):
        return sqltypes.BOOLEAN()
    if isinstance(stdtype, stdtypes.DateType):
        return sqltypes.DATE() if stdtype.only_date else sqltypes.TIMESTAMP()
    if isinstance(stdtype, stdtypes.IntegerType):
        return sqltypes.BIGINT() if stdtype.length > 11 else sqltypes.INTEGER()
    if isinstance(stdtype, stdtypes.DecimalType):
        return sqltypes.DECIMAL()
    if isinstance(stdtype, stdtypes.ArrayType):
        return sqltypes.ARRAY(item_type=stdtype.item_type) 

# 需要导入模块: from sqlalchemy import types [as 别名]
# 或者: from sqlalchemy.types import BOOLEAN [as 别名]
def compare_type(self, ctxt, insp_col, meta_col, insp_type, meta_type):
        """Return True if types are different, False if not.

        Return None to allow the default implementation to compare these types.

        :param ctxt: alembic MigrationContext instance
        :param insp_col: reflected column
        :param meta_col: column from model
        :param insp_type: reflected column type
        :param meta_type: column type from model

        """

        # some backends (e.g. mysql) don't provide native boolean type
        BOOLEAN_METADATA = (types.BOOLEAN, types.Boolean)
        BOOLEAN_SQL = BOOLEAN_METADATA + (types.INTEGER, types.Integer)

        if issubclass(type(meta_type), BOOLEAN_METADATA):
            return not issubclass(type(insp_type), BOOLEAN_SQL)

        # Alembic <=0.8.4 do not contain logic of comparing Variant type with
        # others.
        if isinstance(meta_type, types.Variant):
            orig_type = meta_col.type
            impl_type = meta_type.load_dialect_impl(ctxt.dialect)
            meta_col.type = impl_type
            try:
                return self.compare_type(ctxt, insp_col, meta_col, insp_type,
                                         impl_type)
            finally:
                meta_col.type = orig_type

        return ctxt.impl.compare_type(insp_col, meta_col) 

# 需要导入模块: from sqlalchemy import types [as 别名]
# 或者: from sqlalchemy.types import BOOLEAN [as 别名]
def test_boolean(self):
        for t in ['bool', 'boolean']:
            self._test(t, sqltypes.BOOLEAN) 

# 需要导入模块: from sqlalchemy import types [as 别名]
# 或者: from sqlalchemy.types import BOOLEAN [as 别名]
def test_column_defaults_ddl(self):

        t = Table(
            "t",
            MetaData(),
            Column(
                "x",
                Boolean(create_constraint=True),
                server_default=sql.false(),
            ),
        )

        self.assert_compile(
            CreateTable(t),
            "CREATE TABLE t (x BOOLEAN DEFAULT (0), CHECK (x IN (0, 1)))",
        )

        t = Table(
            "t",
            MetaData(),
            Column("x", String(), server_default=func.sqlite_version()),
        )
        self.assert_compile(
            CreateTable(t),
            "CREATE TABLE t (x VARCHAR DEFAULT (sqlite_version()))",
        )

        t = Table(
            "t",
            MetaData(),
            Column("x", Integer(), server_default=func.abs(-5) + 17),
        )
        self.assert_compile(
            CreateTable(t), "CREATE TABLE t (x INTEGER DEFAULT (abs(-5) + 17))"
        ) 

# 需要导入模块: from sqlalchemy import types [as 别名]
# 或者: from sqlalchemy.types import BOOLEAN [as 别名]
def _fixed_lookup_fixture(self):
        return [
            (sqltypes.String(), sqltypes.VARCHAR()),
            (sqltypes.String(1), sqltypes.VARCHAR(1)),
            (sqltypes.String(3), sqltypes.VARCHAR(3)),
            (sqltypes.Text(), sqltypes.TEXT()),
            (sqltypes.Unicode(), sqltypes.VARCHAR()),
            (sqltypes.Unicode(1), sqltypes.VARCHAR(1)),
            (sqltypes.UnicodeText(), sqltypes.TEXT()),
            (sqltypes.CHAR(3), sqltypes.CHAR(3)),
            (sqltypes.NUMERIC, sqltypes.NUMERIC()),
            (sqltypes.NUMERIC(10, 2), sqltypes.NUMERIC(10, 2)),
            (sqltypes.Numeric, sqltypes.NUMERIC()),
            (sqltypes.Numeric(10, 2), sqltypes.NUMERIC(10, 2)),
            (sqltypes.DECIMAL, sqltypes.DECIMAL()),
            (sqltypes.DECIMAL(10, 2), sqltypes.DECIMAL(10, 2)),
            (sqltypes.INTEGER, sqltypes.INTEGER()),
            (sqltypes.BIGINT, sqltypes.BIGINT()),
            (sqltypes.Float, sqltypes.FLOAT()),
            (sqltypes.TIMESTAMP, sqltypes.TIMESTAMP()),
            (sqltypes.DATETIME, sqltypes.DATETIME()),
            (sqltypes.DateTime, sqltypes.DATETIME()),
            (sqltypes.DateTime(), sqltypes.DATETIME()),
            (sqltypes.DATE, sqltypes.DATE()),
            (sqltypes.Date, sqltypes.DATE()),
            (sqltypes.TIME, sqltypes.TIME()),
            (sqltypes.Time, sqltypes.TIME()),
            (sqltypes.BOOLEAN, sqltypes.BOOLEAN()),
            (sqltypes.Boolean, sqltypes.BOOLEAN()),
            (
                sqlite.DATE(storage_format="%(year)04d%(month)02d%(day)02d"),
                sqltypes.DATE(),
            ),
            (
                sqlite.TIME(
                    storage_format="%(hour)02d%(minute)02d%(second)02d"
                ),
                sqltypes.TIME(),
            ),
            (
                sqlite.DATETIME(
                    storage_format="%(year)04d%(month)02d%(day)02d"
                    "%(hour)02d%(minute)02d%(second)02d"
                ),
                sqltypes.DATETIME(),
            ),
        ]