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Dgraph使用笔记
先docker pull dgraph/dgraph
网络上一些旧的安装方法已经过时,要按照官网的办法:
拉取后要安装官网的步骤,先制作一个docker-compose.yml(将代码拷贝到一个文本文件内,然后修改名称,放到docker当前目录中),内容就不贴了。
然后执行命令docker-compose up –d
如下图
用浏览器打开
浏览器输入192.168.99.100:8000
里面的update URL填入192.168.99.100:8080
官网中说把符号‘ ’之间的代码拷贝到命令行,然后点击run。注意切换命令行下部的mutate---alter---query
{
set {
_:luke <name> "Luke Skywalker" .
_:leia <name> "Princess Leia" .
_:han <name> "Han Solo" .
_:lucas <name> "George Lucas" .
_:irvin <name> "Irvin Kernshner" .
_:richard <name> "Richard Marquand" .
_:sw1 <name> "Star Wars: Episode IV - A New Hope" .
_:sw1 <release_date> "1977-05-25" .
_:sw1 <revenue> "775000000" .
_:sw1 <running_time> "121" .
_:sw1 <starring> _:luke .
_:sw1 <starring> _:leia .
_:sw1 <starring> _:han .
_:sw1 <director> _:lucas .
_:sw2 <name> "Star Wars: Episode V - The Empire Strikes Back" .
_:sw2 <release_date> "1980-05-21" .
_:sw2 <revenue> "534000000" .
_:sw2 <running_time> "124" .
_:sw2 <starring> _:luke .
_:sw2 <starring> _:leia .
_:sw2 <starring> _:han .
_:sw2 <director> _:irvin .
_:sw3 <name> "Star Wars: Episode VI - Return of the Jedi" .
_:sw3 <release_date> "1983-05-25" .
_:sw3 <revenue> "572000000" .
_:sw3 <running_time> "131" .
_:sw3 <starring> _:luke .
_:sw3 <starring> _:leia .
_:sw3 <starring> _:han .
_:sw3 <director> _:richard .
_:st1 <name> "Star Trek: The Motion Picture" .
_:st1 <release_date> "1979-12-07" .
_:st1 <revenue> "139000000" .
_:st1 <running_time> "132" .
}
}
拷贝到命令行,切换到mutate,然后run
name: string @index(term) .
release_date: datetime @index(year) .
revenue: float .
running_time: int .
拷贝到命令行,切换到alter,然后run
{
me(func:allofterms(name, "Star Wars")) @filter(ge(release_date, "1980")) {
name
release_date
revenue
running_time
director {
name
}
starring {
name
}
}
}
拷贝到命令行,切换到query,然后run
第二次运行docker-compose up –d出错,只好docker-compose up用这个命令,勉强运行起来了。
关机后下次运行是不是用下面这个命令呢?
docker-compose start
命令启动运行某个服务的所有容器;
docker-compose stop
命令停止运行一个服务的所有容器;