127 lines
4.3 KiB
Python
127 lines
4.3 KiB
Python
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# Author: Junjun
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# Date: 2025/6/25
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from typing import List, Dict
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from apps.datasource.models.datasource import CoreField, CoreDatasource
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from apps.db.constant import DB
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from common.core.deps import SessionDep
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def transFilterTree(session: SessionDep, tree_list: List[any], ds: CoreDatasource) -> str | None:
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if tree_list is None:
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return None
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res: List[str] = []
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for dto in tree_list:
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tree = dto.tree
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if tree is None:
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continue
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tree_exp = transTreeToWhere(session, tree, ds)
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if tree_exp is not None:
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res.append(tree_exp)
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return " AND ".join(res)
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def transTreeToWhere(session: SessionDep, tree: any, ds: CoreDatasource) -> str | None:
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if tree is None:
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return None
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logic = tree['logic']
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items = tree['items']
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list: List[str] = []
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if items is not None:
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for item in items:
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exp: str = None
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if item['type'] == 'item':
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exp = transTreeItem(session, item, ds)
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elif item['type'] == 'tree':
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exp = transTreeToWhere(session, item['sub_tree'], ds)
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if exp is not None:
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list.append(exp)
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return '(' + f' {logic} '.join(list) + ')' if len(list) > 0 else None
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def transTreeItem(session: SessionDep, item: Dict, ds: CoreDatasource) -> str | None:
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res: str = None
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field = session.query(CoreField).filter(CoreField.id == int(item['field_id'])).first()
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if field is None:
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return None
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db = DB.get_db(ds.type)
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whereName = db.prefix + field.field_name + db.suffix
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if item['filter_type'] == 'enum':
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if len(item['enum_value']) > 0:
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if ds['type'] == 'sqlServer' and (
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field.field_type == 'nchar' or field.field_type == 'NCHAR' or field.field_type == 'nvarchar' or field.field_type == 'NVARCHAR'):
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res = "(" + whereName + " IN (N'" + "',N'".join(item['enum_value']) + "'))"
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else:
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res = "(" + whereName + " IN ('" + "','".join(item['enum_value']) + "'))"
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else:
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value = item['value']
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whereTerm = transFilterTerm(item['term'])
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whereValue = ''
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if item['term'] == 'null':
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whereValue = ''
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elif item['term'] == 'not_null':
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whereValue = ''
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elif item['term'] == 'empty':
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whereValue = "''"
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elif item['term'] == 'not_empty':
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whereValue = "''"
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elif item['term'] == 'in' or item['term'] == 'not in':
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if ds.type == 'sqlServer' and (
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field.field_type == 'nchar' or field.field_type == 'NCHAR' or field.field_type == 'nvarchar' or field.field_type == 'NVARCHAR'):
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whereValue = "(N'" + "', N'".join(value.split(",")) + "')"
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else:
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whereValue = "('" + "', '".join(value.split(",")) + "')"
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elif item['term'] == 'like' or item['term'] == 'not like':
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if ds.type == 'sqlServer' and (
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field.field_type == 'nchar' or field.field_type == 'NCHAR' or field.field_type == 'nvarchar' or field.field_type == 'NVARCHAR'):
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whereValue = f"N'%{value}%'"
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else:
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whereValue = f"'%{value}%'"
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else:
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if ds.type == 'sqlServer' and (
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field.field_type == 'nchar' or field.field_type == 'NCHAR' or field.field_type == 'nvarchar' or field.field_type == 'NVARCHAR'):
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whereValue = f"N'{value}'"
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else:
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whereValue = f"'{value}'"
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res = whereName + whereTerm + whereValue
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return res
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def transFilterTerm(term: str) -> str:
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if term == "eq":
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return " = "
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if term == "not_eq":
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return " <> "
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if term == "lt":
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return " < "
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if term == "le":
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return " <= "
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if term == "gt":
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return " > "
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if term == "ge":
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return " >= "
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if term == "in":
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return " IN "
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if term == "not in":
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return " NOT IN "
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if term == "like":
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return " LIKE "
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if term == "not like":
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return " NOT LIKE "
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if term == "null":
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return " IS NULL "
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if term == "not_null":
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return " IS NOT NULL "
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if term == "empty":
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return " = "
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if term == "not_empty":
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return " <> "
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if term == "between":
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return " BETWEEN "
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return ""
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