110 lines
3.5 KiB
Python
110 lines
3.5 KiB
Python
from .operation import *
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def get_vertex_schema(name: str) -> dict[str, dict[str, Any]]:
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return { 'link' : {'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_vertex(name: str, link: str) -> dict[str, Any]:
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cus = read_all(name, f"select * from vertices where link = '{link}' order by _order")
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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 { 'link': link, 'coords': cs }
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def set_vertex_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
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link = cs.operations[0]['link']
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old = get_vertex(name, link)
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new = { 'link': link, 'coords': [] }
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f_link = f"'{link}'"
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# TODO: transaction ?
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redo_sql = f"delete from vertices where link = {f_link};"
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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 vertices (link, x, y) values ({f_link}, {f_x}, {f_y});"
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new['coords'].append({ 'x': x, 'y': y })
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undo_sql = f"delete from vertices where link = {f_link};"
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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 vertices (link, x, y) values ({f_link}, {f_x}, {f_y});"
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redo_cs = { 'type': 'vertex' } | new
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undo_cs = { 'type': 'vertex' } | old
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return SqlChangeSet(redo_sql, undo_sql, redo_cs, undo_cs)
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def add_vertex_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
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result = set_vertex_cache(name, cs)
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result.redo_cs |= g_add_prefix
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result.undo_cs |= g_delete_prefix
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return result
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def delete_vertex_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
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cs.operations[0]['coords'] = []
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result = set_vertex_cache(name, cs)
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result.redo_cs |= g_delete_prefix
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result.undo_cs |= g_add_prefix
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return result
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def set_vertex(name: str, cs: ChangeSet) -> ChangeSet:
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result = set_vertex_cache(name, cs)
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result.redo_cs |= g_update_prefix
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result.undo_cs |= g_update_prefix
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return execute_command(name, result)
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def add_vertex(name: str, cs: ChangeSet) -> ChangeSet:
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result = set_vertex_cache(name, cs)
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result.redo_cs |= g_add_prefix
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result.undo_cs |= g_delete_prefix
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return execute_command(name, result)
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def delete_vertex(name: str, cs: ChangeSet) -> ChangeSet:
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cs.operations[0]['coords'] = []
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result = set_vertex_cache(name, cs)
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result.redo_cs |= g_delete_prefix
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result.undo_cs |= g_add_prefix
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return execute_command(name, result)
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def inp_in_vertex(section: list[str]) -> ChangeSet:
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vertices: dict[str, list[dict[str, float]]] = {}
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for s in section:
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if s.startswith(';'):
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continue
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tokens = s.split()
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if tokens[0] not in vertices:
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vertices[tokens[0]] = []
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vertices[tokens[0]].append({'x': float(tokens[1]), 'y': float(tokens[2])})
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cs = ChangeSet()
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for link, coords in vertices.items():
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cs.append(g_add_prefix | {'type': 'vertex', 'link' : link, 'coords' : coords})
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return cs
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def inp_out_vertex(name: str) -> list[str]:
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lines = []
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objs = read_all(name, f"select * from vertices order by _order")
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for obj in objs:
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link = obj['link']
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x = obj['x']
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y = obj['y']
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lines.append(f"{link} {x} {y}")
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return lines
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