129 lines
4.3 KiB
Python
129 lines
4.3 KiB
Python
from psycopg.rows import Row
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from .s0_base import *
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from .change_set import ChangeSet
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from .utility import *
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PIPE_STATUS_OPEN = 'open'
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PIPE_STATUS_CLOSED = 'closed'
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PIPE_STATUS_CV = 'cv'
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def add_pipe(name: str, id: str, node1: str, node2: str, length: float = 0, diameter: float = 0, roughness: float = 0, minor_loss: float = 0, status: str = PIPE_STATUS_OPEN) -> ChangeSet:
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if not is_node(name, node1):
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return ChangeSet()
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if not is_node(name, node2):
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return ChangeSet()
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if node1 == node2:
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return ChangeSet()
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if status != PIPE_STATUS_OPEN and status != PIPE_STATUS_CLOSED and status != PIPE_STATUS_CV:
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return ChangeSet()
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sql = f"insert into pipes (id, node1, node2, length, diameter, roughness, minor_loss, status) values ('{id}', '{node1}', '{node2}', {length}, {diameter}, {roughness}, {minor_loss}, '{status}');"
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undo_sql = f'delete from pipes where id = "{id}";'
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return add_link(name, PIPE, id, sql, undo_sql)
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def _get_pipe(name: str, id: str) -> Row | None:
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return query(name, f"select node1, node2, length, diameter, roughness, minor_loss, status from pipes where id = '{id}'")
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def delete_pipe(name: str, id: str) -> ChangeSet:
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if not is_pipe(name, id):
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return ChangeSet()
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row = _get_pipe(name, id)
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if row == None:
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return ChangeSet()
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node1, node2, length, diameter, roughness, minor_loss, status = row['node1'], row['node2'], row['length'], row['diameter'], row['roughness'], row['minor_loss'], row['status']
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sql = f"delete from pipes where id = '{id}';"
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undo_sql = f'insert into pipes (id, node1, node2, length, diameter, roughness, minor_loss, status) values ("{id}", "{node1}", "{node2}", {length}, {diameter}, {roughness}, {minor_loss}, "{status}");'
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return delete_link(name, PIPE, id, sql, undo_sql)
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def get_pipe_node1(name: str, id: str) -> str | None:
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row = _get_pipe(name, id)
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return float(row['node1']) if row != None else None
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def get_pipe_node2(name: str, id: str) -> str | None:
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row = _get_pipe(name, id)
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return float(row['node2']) if row != None else None
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def get_pipe_length(name: str, id: str) -> float | None:
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row = _get_pipe(name, id)
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return float(row['length']) if row != None else None
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def get_pipe_diameter(name: str, id: str) -> float | None:
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row = _get_pipe(name, id)
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return float(row['diameter']) if row != None else None
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def get_pipe_roughness(name: str, id: str) -> float | None:
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row = _get_pipe(name, id)
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return float(row['roughness']) if row != None else None
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def get_pipe_minor_loss(name: str, id: str) -> float | None:
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row = _get_pipe(name, id)
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return float(row['minor_loss']) if row != None else None
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def get_pipe_status(name: str, id: str) -> str | None:
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row = _get_pipe(name, id)
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return float(row['status']) if row != None else None
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def _set_pipe(name: str, id: str, key: str, key_type: str, value: str, optional: bool = False) -> ChangeSet:
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if not is_pipe(name, id):
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return ChangeSet()
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row = _get_pipe(name, id)
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if row == None:
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return ChangeSet()
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return update(name, PIPE, 'pipes', 'id', id, key, key_type, row[key], value, optional)
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def set_pipe_node1(name: str, id: str, node1: str) -> ChangeSet:
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if not is_node(name, node1):
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return ChangeSet()
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return _set_pipe(name, id, 'node1', 'str', str(node1))
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def set_pipe_node2(name: str, id: str, node2: str) -> ChangeSet:
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if not is_node(name, node2):
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return ChangeSet()
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return _set_pipe(name, id, 'node2', 'str', str(node2))
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def set_pipe_length(name: str, id: str, length: float) -> ChangeSet:
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return _set_pipe(name, id, 'length', 'float', str(length))
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def set_pipe_diameter(name: str, id: str, diameter: float) -> ChangeSet:
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return _set_pipe(name, id, 'diameter', 'float', str(diameter))
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def set_pipe_roughness(name: str, id: str, roughness: float) -> ChangeSet:
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return _set_pipe(name, id, 'roughness', 'float', str(roughness))
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def set_pipe_minor_loss(name: str, id: str, minor_loss: float) -> ChangeSet:
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return _set_pipe(name, id, 'minor_loss', 'float', str(minor_loss))
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def set_pipe_status(name: str, id: str, status: float) -> ChangeSet:
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if status != PIPE_STATUS_OPEN and status != PIPE_STATUS_CLOSED and status != PIPE_STATUS_CV:
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return ChangeSet()
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return _set_pipe(name, id, 'status', 'str', str(status))
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