# encoding: utf-8
"""
.. codeauthor:: Tsuyoshi Hombashi <gogogo.vm@gmail.com>
"""
from __future__ import absolute_import
import dataproperty
MEMORY_DB_NAME = ":memory:"
def validate_table_name(name):
"""
:param str name: Table name to validate.
:raises ValueError: |raises_validate_table_name|
"""
import re
if dataproperty.is_empty_string(name):
raise ValueError("table name is empty")
if re.search("^table$", name, re.IGNORECASE) is not None:
raise ValueError("invalid table name: " + name)
[docs]def append_table(con_src, con_dst, table_name):
"""
Append the table from source to destination.
:param SimpleSQLite con_src: Source of the database.
:param SimpleSQLite con_dst: Destination of the database.
:param str table_name: Table name to copy.
:return: |True| if success.
:rtype: bool
:raises simplesqlite.TableNotFoundError:
|raises_verify_table_existence|
:raises ValueError: If attribute of the table is different from each other.
.. seealso::
:py:meth:`simplesqlite.SimpleSQLite.create_table_with_data`
"""
con_src.verify_table_existence(table_name)
con_dst.validate_access_permission(["w", "a"])
if con_dst.has_table(table_name):
src_attr_list = con_src.get_attribute_name_list(table_name)
dst_attr_list = con_dst.get_attribute_name_list(table_name)
if src_attr_list != dst_attr_list:
raise ValueError("""
source and destination attribute is different from each other
src: %s
dst: %s
""" % (str(src_attr_list), str(dst_attr_list)))
result = con_src.select(select="*", table_name=table_name)
if result is None:
return False
value_matrix = result.fetchall()
con_dst.create_table_with_data(
table_name,
con_src.get_attribute_name_list(table_name),
value_matrix)
return True
[docs]def connect_sqlite_db_mem():
"""
:return: Instance of a in memory database.
:rtype: SimpleSQLite
:Examples:
.. code:: python
>>> import simplesqlite
>>> con = simplesqlite.connect_sqlite_db_mem()
>>> con.database_path
':memory:'
"""
from .core import SimpleSQLite
return SimpleSQLite(MEMORY_DB_NAME, "w")