class ChinaJournalDatabase:
""" ChinaJournalDatabase类用来连接中文文献数据库
"""
def __init__(self,proxy=None):
self.mongo = MongoDB()
self.mongo.connect('publication','ChineseJournal')
self.collection = self.mongo.collection
def getByName(self,journal_name=None,exactly=False,auto=False):
if auto:
result = list(self.find(condition={'中文名称':journal_name}))
if len(list(result)) < 1:
result = list(self.find(condition={'中文名称':{'$regex':journal_name}}))
return result
else:
if exactly:
return list(self.find(condition={'中文名称':journal_name}))
else:
return list(self.find(condition={'中文名称':{'$regex':journal_name}}))
def find(self,condition=None):
""" 查询
:param dict condition: 查询条件
:return: 查询结果
"""
return self.collection.find(condition)
def close(self):
""" 关闭数据库连接
:return: 无返回值
"""
self.mongo.close()
class TagDB:
""" TagDB类连接tagdb数据库
"""
def __init__(self):
# 初始化数据库集合
self.__tag_db = MongoDB()
self.__tag_db.connect('FileIndex', 'tagdb')
self.collection = self.__tag_db.collection
def update(self,tag):
""" 更新tagdb数据库
:param dict tag: tag字典
:return: 数据库集合tagdb中查询得到的tagid
:rtype: bson.objectid.ObjectId对象
"""
tag_found = self.collection.find_one({'tag':tag['tag']})
if tag_found is not None:
tagid = tag_found['_id']
tag_found.pop('_id')
tag_found['files'] = '|'.join([str(item) for item in tag_found['files']])
tag['files'] = '|'.join([str(item) for item in tag['files']])
difference = dict(list(tag.items() - tag_found.items()))
if len(difference) > 0:
self.collection.find_one_and_update({'_id':tagid}, {'$set':{'files':tag['files']}})
#{'$set':{'files':[ObjectId(item) for item in re.split('\|',difference['files'])]}})
return tagid
else:
self.collection.insert_one(tag)
return None
def delete_many(self,ids):
""" 根据id删除数据库中的文档
:param ids: 数据库中文档的_id列表
:return: 无返回值
"""
for item in ids:
self.collection.delete_one({'_id':ObjectId(item)})
def close(self):
""" 关闭数据库连接
:return: 无返回值
"""
self.__tag_db.close()
class ElisePaper:
def __init__(self):
self.mongo = MongoDB()
province_economy = Excel('E:\\data\\college\\province.xlsx').read()
self.province_economy_dict = dict([(str(int(item[0])),item[2]) for item in province_economy[1:]])
self.mongo.connect('region','province')
self.province_dict = dict([(item['acode'],item['region']) for item in self.mongo.collection.find({})])
def get_data_by_region(self,acode,subject='理科'):
mresult = [['学校','类型','录取平均分','学校地区','学校评分','地区收入']]
self.mongo.connect('college','entranceexam')
query_result = self.mongo.collection.find({'student_region':acode,'subject':subject})
self.mongo.connect('college','collegeinfo')
for item in query_result:
rating = self.mongo.collection.find_one({'name':item['university']})['rating']
income = self.province_economy_dict[item['university_region']]
mresult.append([item['university'],item['type'],item['average_score'],item['university_region'],
rating,income])
return mresult
def get_college_data(self):
self.mongo.connect('college','entranceexam')
colleges = self.mongo.collection.find({}).distinct('university')
self.mongo.connect('college','collegeinfo')
records = self.mongo.collection.find({'name':{'$in':colleges}},
projection={'_id':0,'name':1,'rating':1,'score':1,'region':1,'project':1,'type':1})
result = [record for record in records if len(record['region']) < 2]
result = dict([(item['rating'],item) for item in result])
mresult = [['排名','学校','类型','评分','地区','地区可支配收入']]
for item in sorted(result):
region = result[item]['region'][0]
region_income = self.province_economy_dict[region]
mresult.append([result[item]['rating'],result[item]['name'],
result[item]['type'],result[item]['score'],
region,region_income])
return mresult
def close(self):
self.mongo.close()
class FileDB:
""" FileDB类连接filedb数据库
"""
def __init__(self):
# 初始化数据库集合
self.__file_db = MongoDB()
self.__file_db.connect("FileIndex", "filedb")
self.collection = self.__file_db.collection
# pathdb数据集合
self.__path_db = PathDB()
def update(self, file, path):
""" 根据file，更新文件库信息
:param file: 文件对象
:param path: 路径对象
:return: 返回当前文件在数据库中的id，如果数据库中无当前文件信息，返回None
:rtype: bson.objectid.ObjectId对象
"""
# 获得数据库中该文件的路径信息
path_found = self.__path_db.collection.find_one({"path": path.relative_path})
if path_found is None:
print("Path wrong!")
raise FileNotFoundError
# 获得文件的信息
file_found = self.collection.find_one(
{
"full_file_name_without_sc": os.path.join(
path.relative_path, file.parser.path_name_without_special_characters
)
}
)
# 如果数据库里没有相关文件信息，则插入此文件信息；若有，比较两者是否一致。
if file_found is not None:
# 变量fid是数据库中相关文件信息中的_id
fid = file_found["_id"]
# 目录中文件信息与数据库相关文件信息的差异
difference = dict(
list(
self.make_document(file, path, path_found, True).items()
- self.make_document_from_db(file_found).items()
)
)
# 更改tags和projects的格式
if "tags" in difference:
difference["tags"] = re.split("\|", difference["tags"])
if "projects" in difference:
difference["projects"] = re.split("\|", difference["projects"])
if "last_modified" in difference:
difference["last_modified"] = file.parser.last_modified
if "time" in difference:
difference["time"] = file.parser.time
# 若存在差异，则更新数据库中的信息
if len(difference) > 0:
self.collection.insert_one(self.make_document(file, path, path_found, False))
return None
else:
# self.collection.find_one_and_update({'_id':fid},{'$set':difference})
return fid
else:
# 若数据库中无此文件信息，那么插入此信息
self.collection.insert_one(self.make_document(file, path, path_found, False))
return None
@classmethod
def make_document(cls, file, path, path_found, for_comparison=False):
""" 根据file，path以及数据库中查询得到的path_found，创建符合数据库filedb集合标准格式的文档
:param File file: 文件对象
:param Path path: 路径对象
:param dict path_found: 数据库中查询得到的路径文档
:param bool for_comparison: 是否是用来进行比较
:return: 数据文档
:rtype: dict
"""
if for_comparison:
document = {
"full_file_name": os.path.join(path.relative_path, file.parser.path_name),
"full_file_name_without_sc": os.path.join(
path.relative_path, file.parser.path_name_without_special_characters
),
"special_characters": file.parser.special_character_part,
"file_name": file.parser.path_name,
"directory": path_found["_id"],
"extension": file.parser.extension,
"last_modified": file.parser.last_modified.ctime(),
"size": len(file),
"author": file.parser.author,
"version": file.parser.version,
}
if file.parser.time is not None:
document["time"] = file.parser.time.ctime()
else:
document["time"] = None
if file.parser.tags is not None:
document["tags"] = "|".join(file.parser.tags)
else:
document["tags"] = None
if file.parser.projects is not None:
document["projects"] = "|".join(file.parser.projects)
else:
document["projects"] = None
else:
document = {
"full_file_name": os.path.join(path.relative_path, file.parser.path_name),
"full_file_name_without_sc": os.path.join(
path.relative_path, file.parser.path_name_without_special_characters
),
"special_characters": file.parser.special_character_part,
"file_name": file.parser.path_name,
"directory": path_found["_id"],
"extension": file.parser.extension,
"last_modified": file.parser.last_modified,
"size": len(file),
"author": file.parser.author,
"time": file.parser.time,
"version": file.parser.version,
"tags": file.parser.tags,
"projects": file.parser.projects,
}
return document
@classmethod
def make_document_from_db(cls, file):
""" 根据数据库中的文件文档对象创建新文档，进行比较
:param dict file: 文件对象
:return: 文档
:rtype: dict
"""
record = file
record.pop("_id")
record["last_modified"] = record["last_modified"].ctime()
if record["time"] is not None:
record["time"] = record["time"].ctime()
else:
record["time"] = None
if record["tags"] is not None:
record["tags"] = "|".join(record["tags"])
else:
record["tags"] = None
if record["projects"] is not None:
record["projects"] = "|".join(record["projects"])
else:
record["projects"] = None
return record
def delete_many(self, ids):
""" 根据id删除数据库中的文档
:param ids: 数据库中文档的_id列表
:return: 无返回值
"""
for item in ids:
self.collection.delete_one({"_id": ObjectId(item)})
def make_tag_document(self):
""" 根据filedb数据库中的信息，生成tagdb中所需要的标准格式文档
:return: 标签文档
:rtype: defaultdict对象
"""
tags = defaultdict(list)
tag_items = self.collection.find({}, {"_id": 1, "tags": 1})
for item in tag_items:
for tag in item["tags"]:
tags[tag].append(item["_id"])
return tags
def get_files_according_to_path_list(self, path_list):
""" 根据目录列表，补充文件信息
:param list path_list: 目录列表
:return: 完整的目录文件字典
:rtype: OrderedDict对象
"""
result = OrderedDict()
for path in path_list:
path_found = self.__path_db.collection.find_one({"path": path})
files_found = self.collection.find({"directory": path_found["_id"]})
result[path] = [file["file_name"] for file in files_found]
return result
def find_and_open(self, base_path, temp_path, **condition):
""" 根据condition条件查询filedb数据库，复制查询得到的文件到temp_path，并且打开temp_path文件窗口
:param str base_path:
:param str temp_path:
:param dict condition:
:return: 返回成功或失败信息
:rtype: str
"""
result = list(self.collection.find(condition))
if len(result) < 1:
return "None is found!"
else:
for item in result:
source_file = os.path.join(base_path, item["full_file_name"])
destination_file = os.path.join(temp_path, item["file_name"])
OSOperator.copy_to(source_file, destination_file)
os.startfile(temp_path)
return "successfully!"
def close(self):
""" 关闭数据库连接
:return: 无返回值
"""
self.__file_db.close()
class PathDB:
""" PathDB类连接pathdb数据库
"""
def __init__(self):
# 初始化数据库集合
self.__path_db = MongoDB()
self.__path_db.connect('FileIndex', 'pathdb')
self.collection = self.__path_db.collection
def update(self,path):
""" 更新路径
:param Path path: Path类对象，提供路径信息
:return: 数据库匹配得到的路径文档的_id，若数据库中不存在此路径，则返回None
:rtype: ObjectId类对象或者None
"""
# 根据相对路径寻找数据库中匹配的文档
document_in_db = self.collection.find_one({'path':path.relative_path})
# 若没有找到匹配的文档，则插入当前路径信息文档
if document_in_db is None:
self.collection.insert_one(self.make_document(path,False))
return None
else:
# 更新数据库路径文档
did = document_in_db['_id']
document_in_db.pop('_id')
document_in_db.pop('children_id')
document_in_db['last_modified'] = document_in_db['last_modified'].ctime()
difference = dict(list(self.make_document(path,True).items() - document_in_db.items()))
if 'last_modified' in difference:
difference['last_modified'] = path.parser.last_modified
if len(difference) > 0:
self.collection.find_one_and_update({'_id':did},{'$set':difference})
return did
def traverse_and_update(self):
""" 遍历更新路径文档的子目录信息，即childre_id。
这里分两个步骤，其一是遍历数据库，通过原文档的父路径id，查询父路径文档，并把源文档的id添加到父路径文档的children_id中；
其二是遍历数据库，通过源文档的子路径id列表，查询子路径文档，并验证该子路径是否存在
:return: 无返回值
"""
# 遍历数据库
for record in self.collection.find({}):
# 获得单个记录的父路径id
record_parent_path_id = record['parent_path_id']
if record_parent_path_id is not None:
# 查询父路径id指向的记录，则指向的记录是当前记录的父路径记录，那么该父路径的子路径集中必须有当前记录信息
children_id = set(self.collection.find_one({'_id':record_parent_path_id})['children_id'])
if record['_id'] not in children_id:
self.collection.update_one({'_id':record_parent_path_id},
{'$addToSet':{'children_id':record.get('_id')}},upsert =True)
# 遍历数据库
for record in self.collection.find({}):
# 如果存在子目录集合，那么查询每个子目录是否存在
if len(record['children_id']) > 0:
for pid in record['children_id']:
path_found = self.collection.find_one({'_id':pid})
if path_found is None:
self.collection.update_one({'_id':record['_id']},
{'$pull':{'children_id':pid}})
continue
if path_found['parent_path_id'] != record['_id']:
self.collection.update_one({'_id':record['_id']},
{'$pull':{'children_id':pid}})
def make_document(self,path,for_comparison=False):
""" 根据path创建标准格式的数据库pathdb集合中的文档
:param path:
:param for_comparision:
:return:
"""
# 数据库中文档形式如下：
# {
# path: 相对路径
# path_name: 当前路径名称
# parent_path_id: 相对父路径
# last_modified: 最近修改时间
# children_id: 子目录列表
# }
if for_comparison:
# 根目录是.，如果是根目录，需要设置parent_path_id为None
if re.match('^\.$',path.relative_path) is not None:
document = {'path':path.relative_path,
'path_name':path.relative_path,
'parent_path_id':None,
'last_modified':path.parser.last_modified.ctime()}
else:
parent_id = self.collection.find_one({'path':path.relatvie_parent_path})['_id']
document = {'path':path.relative_path,
'path_name': path.current_path,
'parent_path_id':parent_id,
'last_modified':path.parser.last_modified.ctime()}
else:
# 根目录是.，如果是根目录，需要设置parent_path_id为None
if re.match('^\.$',path.relative_path) is not None:
document = {'path':path.relative_path,
'path_name':path.relative_path,
'parent_path_id':None,
'last_modified':path.parser.last_modified,
'children_id':[]}
else:
parent_id = self.collection.find_one({'path':path.relatvie_parent_path})['_id']
document = {'path':path.relative_path,
'path_name': path.current_path,
'parent_path_id':parent_id,
'last_modified':path.parser.last_modified,
'children_id':[]}
return document
def _raw_path_tree(self,root='.'):
""" 辅助函数，根据数据库中的信息，返回目录树
:param str root: 起始路径
:return: 路径树
:rtype: list
"""
result = []
# 查询起始路径
root_path = self.collection.find_one({'path':root})
# 查询子路径集合
child_path = list(self.collection.find({'parent_path_id':root_path['_id']}))
# 如果没有子路径，则返回当前路径的集合
if len(child_path) < 1:
return [root_path['path']]
# 否则，添加子路径及以子路径为起始路径的下属路径
else:
for item in child_path:
result.append(item['path'])
result.extend(self._raw_path_tree(item['path']))
return result
def path_tree(self,root='.'):
""" 根据数据库中的信息，返回目录树
:param str root: 起始路径
:return: 路径树
:rtype: list
"""
# 这里result_set的用途是排除重合的路径
result_set = set()
raw_result = self._raw_path_tree(root)
result = []
for item in raw_result:
if item not in result_set:
result.append(item)
result_set.add(item)
return result
def delete_many(self,ids):
""" 根据id删除数据库中的文档
:param ids: 数据库中文档的_id列表
:return: 无返回值
"""
for item in ids:
self.collection.delete_one({'_id':ObjectId(item)})
def close(self):
""" 关闭数据库连接
:return: 无返回值
"""
self.__path_db.close()