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A connect graphdb package

Project description

graphdb

介绍

python 连接 graphdb 数据库的包

功能

通过执行SPARQL语句就可查询和更新Graph数据库

安装教程

两种方式
1.pip install pygraphdb
2.下载此包,复制 pygraph 文件,放入你的项目目录下

使用说明

1. 导入包

import pygraph

2. 数据库 config

host = '0.0.0.0'
port = '7200'
db = 'db_name'
user = 'admin'
password = 'password'

3. sparql 语句(例)

sparql = "PREFIX disease_type_iri:<http://schema.omaha.org.cn/property/> " \
     "select distinct ?x ?y where { ?x disease_type_iri:Alternatename ?y .}"
     
4. 连接数据库

db = pygraph.connect(host, port, db, user, password)

5. 获取 cursor

cur = db.cursor()

6. 执行sparql语句,得到结果

result = cur.execute(sparql)

7. 打印结果

print(result)

8. 关闭 cursor

cur.close()

9. 关闭数据库

db.close()

使用with

1.第一种方式

with pygraph.connect(host, port, db, user, password) as db2:
    #获取 cursor
    cur2 = db2.cursor()
    #执行sparql语句,得到结果
    result2 = cur2.execute(sparql)
    cur2.close()
    print(result2)

2.第二种方式

db3 = pygraph.connect(host, port, db, user, password)
with db3.cursor() as cur3:
    result3 = cur3.execute(sparql)
    print(result3)
db3.close()

参与贡献

刘洪波

参考资料

grapddb 使用教程: https://graphdb.ontotext.com/documentation/free/index.html

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