50 lines
1.9 KiB
Python
50 lines
1.9 KiB
Python
from .operation import *
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def get_curve_schema(name: str) -> dict[str, dict[str, Any]]:
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return { 'id' : {'type': 'str' , 'optional': False , 'readonly': True },
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'coords' : {'type': 'list' , 'optional': False , 'readonly': False,
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'element': { 'x' : {'type': 'float' , 'optional': False , 'readonly': False },
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'y' : {'type': 'float' , 'optional': False , 'readonly': False } }}}
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def get_curve(name: str, id: str) -> dict[str, Any]:
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cus = read_all(name, f"select * from curves where id = '{id}'")
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cs = []
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for r in cus:
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cs.append({ 'x': float(r['x']), 'y': float(r['y']) })
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return { 'id': id, 'coords': cs }
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def set_curve(name: str, cs: ChangeSet) -> ChangeSet:
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id = cs.operations[0]['id']
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old = get_curve(name, id)
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new = { 'id': id, 'coords': [] }
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f_id = f"'{id}'"
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# TODO: transaction ?
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redo_sql = f"delete from curves where id = {f_id};"
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redo_sql += f"\ndelete from _curve where id = {f_id};"
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if len(cs.operations[0]['coords']) > 0:
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redo_sql += f"\ninsert into _curve (id) values ({f_id});"
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for xy in cs.operations[0]['coords']:
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x, y = float(xy['x']), float(xy['y'])
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f_x, f_y = x, y
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redo_sql += f"\ninsert into curves (id, x, y) values ({f_id}, {f_x}, {f_y});"
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new['coords'].append({ 'x': x, 'y': y })
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undo_sql = f"delete from curves where id = {f_id};"
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undo_sql += f"\ndelete from _curve where id = {f_id};"
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if len(old['coords']) > 0:
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undo_sql += f"\ninsert into _curve (id) values ({f_id});"
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for xy in old['coords']:
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f_x, f_y = xy['x'], xy['y']
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undo_sql += f"\ninsert into curves (id, x, y) values ({f_id}, {f_x}, {f_y});"
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redo_cs = g_update_prefix | { 'type': 'curve' } | new
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undo_cs = g_update_prefix | { 'type': 'curve' } | old
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return execute_command(name, redo_sql, undo_sql, redo_cs, undo_cs)
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