91 lines
3.5 KiB
Python
91 lines
3.5 KiB
Python
from .database import *
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from .s32_region_util import from_postgis_polygon, to_postgis_polygon
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def get_region_schema(name: str) -> dict[str, dict[str, Any]]:
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return { 'id' : {'type': 'str' , 'optional': False , 'readonly': True },
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'boundary' : {'type': 'tuple_list' , 'optional': False , 'readonly': False} }
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def get_region(name: str, id: str) -> dict[str, Any]:
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r = try_read(name, f"select id, st_astext(boundary) as boundary_geom from region where id = '{id}'")
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if r == None:
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return {}
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d = {}
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d['id'] = str(r['id'])
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d['boundary'] = from_postgis_polygon(str(r['boundary_geom']))
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return d
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def _set_region(name: str, cs: ChangeSet) -> DbChangeSet:
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id = cs.operations[0]['id']
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new = cs.operations[0]['boundary']
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old = get_region(name, id)['boundary']
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redo_sql = f"update region set boundary = st_geomfromtext('{to_postgis_polygon(new)}') where id = '{id}';"
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undo_sql = f"update region set boundary = st_geomfromtext('{to_postgis_polygon(old)}') where id = '{id}';"
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redo_cs = g_update_prefix | { 'type': 'region', 'id': id, 'boundary': new }
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undo_cs = g_update_prefix | { 'type': 'region', 'id': id, 'boundary': old }
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return DbChangeSet(redo_sql, undo_sql, [redo_cs], [undo_cs])
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def set_region(name: str, cs: ChangeSet) -> ChangeSet:
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if 'id' not in cs.operations[0] or 'boundary' not in cs.operations[0]:
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return ChangeSet()
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b = cs.operations[0]['boundary']
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if len(b) < 4 or b[0] != b[-1]:
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return ChangeSet()
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if get_region(name, cs.operations[0]['id']) == {}:
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return ChangeSet()
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return execute_command(name, _set_region(name, cs))
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def _add_region(name: str, cs: ChangeSet) -> DbChangeSet:
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id = cs.operations[0]['id']
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new = cs.operations[0]['boundary']
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redo_sql = f"insert into region (id, boundary) values ('{id}', '{to_postgis_polygon(new)}');"
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undo_sql = f"delete from region where id = '{id}';"
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redo_cs = g_add_prefix | { 'type': 'region', 'id': id, 'boundary': new }
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undo_cs = g_delete_prefix | { 'type': 'region', 'id': id }
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return DbChangeSet(redo_sql, undo_sql, [redo_cs], [undo_cs])
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def add_region(name: str, cs: ChangeSet) -> ChangeSet:
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if 'id' not in cs.operations[0] or 'boundary' not in cs.operations[0]:
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return ChangeSet()
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b = cs.operations[0]['boundary']
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if len(b) < 4 or b[0] != b[-1]:
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return ChangeSet()
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if get_region(name, cs.operations[0]['id']) != {}:
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return ChangeSet()
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return execute_command(name, _add_region(name, cs))
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def _delete_region(name: str, cs: ChangeSet) -> DbChangeSet:
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id = cs.operations[0]['id']
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old = get_region(name, id)['boundary']
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redo_sql = f"delete from region where id = '{id}';"
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undo_sql = f"insert into region (id, boundary) values ('{id}', '{to_postgis_polygon(old)}');"
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redo_cs = g_delete_prefix | { 'type': 'region', 'id': id }
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undo_cs = g_add_prefix | { 'type': 'region', 'id': id, 'boundary': old }
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return DbChangeSet(redo_sql, undo_sql, [redo_cs], [undo_cs])
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def delete_region(name: str, cs: ChangeSet) -> ChangeSet:
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if 'id' not in cs.operations[0]:
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return ChangeSet()
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if get_region(name, cs.operations[0]['id']) == {}:
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return ChangeSet()
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return execute_command(name, _delete_region(name, cs))
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def inp_in_region(line: str) -> str:
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tokens = line.split()
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return str(f"insert into _region (id, type) values ('{tokens[0]}', '{tokens[1]}');")
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def inp_in_bound(line: str) -> str:
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tokens = line.split()
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return tokens[0] |