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\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// import re from sqlalchemy import __version__ from sqlalchemy.schema import ForeignKeyConstraint, CheckConstraint, Column from sqlalchemy import types as sqltypes from sqlalchemy import schema, sql from sqlalchemy.sql.visitors import traverse from sqlalchemy.ext.compiler import compiles from sqlalchemy.sql.expression import _BindParamClause from . import compat def _safe_int(value): try: return int(value) except: return value _vers = tuple( [_safe_int(x) for x in re.findall(r'(\d+|[abc]\d)', __version__)]) sqla_07 = _vers > (0, 7, 2) sqla_079 = _vers >= (0, 7, 9) sqla_08 = _vers >= (0, 8, 0) sqla_083 = _vers >= (0, 8, 3) sqla_084 = _vers >= (0, 8, 4) sqla_09 = _vers >= (0, 9, 0) sqla_092 = _vers >= (0, 9, 2) sqla_094 = _vers >= (0, 9, 4) sqla_094 = _vers >= (0, 9, 4) sqla_099 = _vers >= (0, 9, 9) sqla_100 = _vers >= (1, 0, 0) sqla_105 = _vers >= (1, 0, 5) if sqla_08: from sqlalchemy.sql.expression import TextClause else: from sqlalchemy.sql.expression import _TextClause as TextClause def _table_for_constraint(constraint): if isinstance(constraint, ForeignKeyConstraint): return constraint.parent else: return constraint.table def _columns_for_constraint(constraint): if isinstance(constraint, ForeignKeyConstraint): return [fk.parent for fk in constraint.elements] elif isinstance(constraint, CheckConstraint): return _find_columns(constraint.sqltext) else: return list(constraint.columns) def _fk_spec(constraint): if sqla_100: source_columns = [ constraint.columns[key].name for key in constraint.column_keys] else: source_columns = [ element.parent.name for element in constraint.elements] source_table = constraint.parent.name source_schema = constraint.parent.schema target_schema = constraint.elements[0].column.table.schema target_table = constraint.elements[0].column.table.name target_columns = [element.column.name for element in constraint.elements] ondelete = constraint.ondelete onupdate = constraint.onupdate deferrable = constraint.deferrable initially = constraint.initially return ( source_schema, source_table, source_columns, target_schema, target_table, target_columns, onupdate, ondelete, deferrable, initially) def _is_type_bound(constraint): # this deals with SQLAlchemy #3260, don't copy CHECK constraints # that will be generated by the type. if sqla_100: # new feature added for #3260 return constraint._type_bound else: # old way, look at what we know Boolean/Enum to use return ( constraint._create_rule is not None and isinstance( getattr(constraint._create_rule, "target", None), sqltypes.SchemaType) ) def _find_columns(clause): """locate Column objects within the given expression.""" cols = set() traverse(clause, {}, {'column': cols.add}) return cols def _textual_index_column(table, text_): """a workaround for the Index construct's severe lack of flexibility""" if isinstance(text_, compat.string_types): c = Column(text_, sqltypes.NULLTYPE) table.append_column(c) return c elif isinstance(text_, TextClause): return _textual_i