如何使用enum RelationshipType和Neo4j？

I would like to define some relationship type between some typed node. When I look example always they use a String to define relationship type, as in this example . By using:

我想在某个类型节点之间定义一些关系类型。当我查看示例时，他们总是使用String来定义关系类型，如本例所示。通过使用：

@RelationshipEntity(type = "ACTED_IN")

I tried to use org.neo4j.graphdb.RelationshipType but RelationshipEntity.type expect a string.

我试图使用org.neo4j.graphdb.RelationshipType但是RelationshipEntity.type期望一个字符串。

public enum PersonMovieRelationshipType implements RelationshipType {
    ACTED_IN("ACTED_IN"),
    AUTHOR("AUTHOR");

    private String type;

    PersonMovieRelationshipType( String type ){
        this.type = type;
    }

    public String getType() {
        return type;
    }
}

RelationshipType enum provide a method "name()" what to do with ?

RelationshipType枚举提供了一个方法“name（）”如何处理？

I do not like free text way, is it possible use an enum ?

我不喜欢*文本方式，是否可以使用枚举？

Any full example will be appreciated.

任何完整的例子将不胜感激。

Regards

问候

1 个解决方案

#1

You can't due to the way annotations work. What you could do is declaring the relation names as constants.

你不能因为注释的工作方式。你可以做的是将关系名称声明为常量。

interface RelationNames{
  String ACTED_IN = "ACTED_IN";
}

And then use those constants in your code

然后在代码中使用这些常量

@RelationshipEntity(type = RelationNames.ACTED_IN)

#1