# -*- coding: utf-8 -*-

# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://doc.scrapy.org/en/latest/topics/item-pipeline.html
import pymongo

class OnlinejudgeproblemBzojPipeline(object):
    def process_item(self, item, spider):
        return item


class MongoPipeline(object):

    def __init__(self, mongo_uri, mongo_db):
        self.mongo_uri = mongo_uri
        self.mongo_db = mongo_db

    @classmethod
    def from_crawler(cls, crawler):
        return cls(
            mongo_uri=crawler.settings.get('MONGO_URI'),
            mongo_db=crawler.settings.get('MONGO_DATABASE', 'items')
        )

    def open_spider(self, spider):
        self.client = pymongo.MongoClient(self.mongo_uri)
        self.db = self.client[self.mongo_db]

    def close_spider(self, spider):
        self.client.close()

    def process_item(self, item, spider):
        """
        :function: 更新至mongo数据库
        :param item: ProblemItem
        :param spider:
        :return: item
        """
        self.db['problem'].update({'problem_no': item['problem_no']}, {'$set': item}, True)
        # book_info = dict(item)
        # self.db['problem'].insert(book_info)
        return item



# -*- coding: utf-8 -*-

# Define your item pipelines here
#
# Don't forget to add your pipeline to the ITEM_PIPELINES setting
# See: https://doc.scrapy.org/en/latest/topics/item-pipeline.html
import pymongo

class OnlinejudgeproblemBzojPipeline(object):
    def process_item(self, item, spider):
        return item


class MongoPipeline(object):

    def __init__(self, mongo_uri, mongo_db):
        self.mongo_uri = mongo_uri
        self.mongo_db = mongo_db

    @classmethod
    def from_crawler(cls, crawler):
        return cls(
            mongo_uri=crawler.settings.get('MONGO_URI'),
            mongo_db=crawler.settings.get('MONGO_DATABASE', 'items')
        )

    def open_spider(self, spider):
        self.client = pymongo.MongoClient(self.mongo_uri)
        self.db = self.client[self.mongo_db]

    def close_spider(self, spider):
        self.client.close()

    def process_item(self, item, spider):
        """
        :function: 更新至mongo数据库
        :param item: ProblemItem
        :param spider:
        :return: item
        """
        self.db['problem'].update({'problem_no': item['problem_no']}, {'$set': item}, True)
        # book_info = dict(item)
        # self.db['problem'].insert(book_info)
        return item



# -*- coding: utf-8 -*- # Define your item pipelines here # # Don't forget to add your pipeline to the ITEM_PIPELINES setting # See: https://doc.scrapy.org/en/latest/topics/item-pipeline.html :function: 更新至mongo数据库         :param item: ProblemItem         :param spider:         :return: item # book_info = dict(item) # self.db['problem'].insert(book_info)