neomodel：如何在 StructuredNode 对象之间共享索引答案

【问题标题】：neomodel: how to share index across StructuredNode Objectsneomodel：如何在 StructuredNode 对象之间共享索引
【发布时间】：2013-08-15 09:07:44
【问题描述】：

如何在 neomodel 中跨节点对象共享唯一索引，而不实例化单独的对象以仅保存索引数据？我想根据索引查询找到对象，例如：

...
mynode = BaseObject.index.get(uid=uid_of_Type1Object)
# mynode is now of type `Type1Object`

与

class BaseObject(StructuredNode):
    uid = StringProperty(unique_index=True)
    ...

class Type1Object(BaseObject):
    ...
    def assign_uid(self, guid):
        # I may need tweaking of uid generator
        # on subclass level
        self.uid = guid

class Type2Object(BaseObject):
    ...
    def assign_uid(self, guid):
        self.uid = guid

【问题讨论】：

"neomodel" 不作为标签存在......也许如果其中一位大人物好心帮忙...... ;)
@Nicholas 非常感谢！

标签： python indexing neo4j cypher neomodel

【解决方案1】：

在 https://github.com/robinedwards/neomodel/commit/1f1b43377b25cd4d41e17ce2b7f9ca1a1643edea 中添加了对 StructuredNode 子类上的自定义索引的支持

class BaseObject(StructuredNode):
    __index__ = 'MyBaseIndex'
    uid = StringProperty(unique_index=True)
    ...

class Type1Object(BaseObject):
    __index__ = 'MyBaseIndex'
    ...
    def assign_uid(self, guid):
        # I may need tweaking of uid generator
        # on subclass level
        self.uid = guid

class Type2Object(BaseObject):
    __index__ = 'MyBaseIndex'
    ...
    def assign_uid(self, guid):
        self.uid = guid

【讨论】：