SDN neo4j 3.0发布索引策略

本文介绍了SDN neo4j 3.0发布索引策略的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

自从RC1更新为RELEASE以来，我遇到了以下异常:

org.springframework.data.mapping.model.MappingException: No index name allowed on label based indexes

这意味着 @Index 现在将默认为标签"，而不是简单索引".

如何为每个 @NodeEntity 指定标签? 通过此链接，我认为我应该使用 @Labels 但是这是官方吗?

考虑问题 DATAGRAPH-433 唯一索引会使用旧索引策略吗? spring数据neo4j文档没有提供任何线索.

解决方案

您可以从@Indexed批注中删除indexName.

或者为旧索引添加@Indexed(indexType = IndexType.SIMPLE).

您还必须手动为唯一索引设置该值.我有一篇针对SDN 3.0的博客文章.明天出版.

Since I updated from RC1 to RELEASE I get this exception:

org.springframework.data.mapping.model.MappingException: No index name allowed on label based indexes

which means @Index will now default to Label and not Simple indexing.

How do I specify the labels for each @NodeEntity ? From this link I think I should use @Labels but is this official ?

Considering issue DATAGRAPH-433 will unique indexes use the old index strategy?

The spring data neo4j documentation doesn't offer any clue.

解决方案

You can either just remove the indexName from your @Indexed annotations.

Or you add @Indexed(indexType = IndexType.SIMPLE) for the old indexes.

You have to manually set that for unique indexes too. I have a blog post in writing for SDN 3.0. To be published some time tomorrow.