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+楼层贯通关系
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+## 前置条件
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+两个楼层的model_id信息点需要一致并不能为空, 则认为两个楼层是贯通关系
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+```
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+FROM floor WHERE project_id='Pj4201050001' AND model_id is not null
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+```
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+## 处理方式
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+ 1. 先删除项目下所有的贯通关系(只删除sign为2的关系)
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+ 2. 多表连接更新:
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+ 1. 根据model_id信息点多表连接
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+ 2. 将结果插入到r_fl_through_fl表中, sign置为2
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+
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+# 函数
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+
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+```
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+create or replace function public.rel_fl2fl(project_id character varying, sign1 integer, sign2 integer) returns boolean
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+as
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+$$
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+try:
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+ # 将下面对数据库的操作作为一个事务, 出异常则自动rollback
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+ with plpy.subtransaction():
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+ # 删除原来楼层贯通关系
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+ plan1 = plpy.prepare("delete from r_fl_through_fl where project_id = $1 and (sign = $2 or sign = $3)", ["text", "integer", "integer"])
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+ plan1.execute([project_id, sign1, sign2])
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+ # 计算贯通关系
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+ plan2 = plpy.prepare("select f1.id as lid, f2.id as rid from floor f1 left join floor f2 on f1.model_id = f2.model_id where f1.id != f2.id and f1.project_id = $1 and f2.project_id = $1", ["text"])
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+ relation = plan2.execute([project_id])
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+ if len(relation) == 0:
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+ plpy.info("计算出没有关系")
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+ return True
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+ for row in relation:
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+ plan3 = plpy.prepare("insert into r_fl_through_fl(floor_id, floor_other_id, project_id, sign) values($1, $2, $3, 2) ", ["text", "text", 'text'])
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+ plan3.execute([row['lid'], row['rid'], project_id])
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+except Exception as e:
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+ plpy.warning(e)
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+ return False
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+else:
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+ return True
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+$$
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+LANGUAGE 'plpython3u' VOLATILE;
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+```
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+
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+## 输入
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+ 1. 项目id
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+ 2. 表示r_fl_through_fl表中要被删除的sign值
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+ 3. 同上, 与2是逻辑或的关系
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+## 返回结果
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+ true 成功
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+ false 失败
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