Neo4j中的OGM(Object Graph Mapping)类似于ORM(对象关系映射)

本博文对应的Neo4j版本为 3.4.4  (使用Neo4j version 查看版本号),py2neo 版本为4.0.0(使用pip list查看)

OGM 类似于 ORM，意为 Object Graph Mapping，这样可以实现一个对象和 Node 的关联，例如：

from py2neo.ogm import  GraphObject, Property, RelatedFrom, RelatedTo

class Movie(GraphObject):
    __primarykey__ = "title"

    title = Property()
    tag_line = Property("tagline")
    released = Property()

    actors = RelatedFrom("Person", "ACTED_IN")
    directors = RelatedFrom("Person", "DIRECTED")
    producers = RelatedFrom("Person", "PRODUCED")


class Person(GraphObject):
    __primarykey__ = "name"

    name = Property()
    born = Property()

    acted_in = RelatedTo(Movie)
    directed = RelatedTo(Movie)
    produced = RelatedTo(Movie)