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如何推翻新4j的遗嘱财产清单?
原标题:How to traverse an order list of node properties in neo4j?
  • 时间:2012-04-18 19:48:04
  •  标签:
  • java
  • neo4j

我对新4j说了新话,因此,感谢你们的帮助。

我拥有一个新4j数据库,其名称为“Color”和两种关系类型,即“Previous”和“Next”。 我有一位ArrayList,按他们应穿透的顺序,如蓝色、红色、黄色。

我如何驳斥图表,以发现在数据库中是否存在准确的Node(Color:Blue)->Node(Color:Red)->Node(Color:Yellow)与“Next”类型和所有关系之间的任何节点?

I m 采用新4j 嵌入“java”申请。

最佳回答

这可能与每种文本之间的关系足够了,因为即将出版的正文可被视为“原文”。

我认为,你应当把彩色指数化,然后从头条 no开始(此处为“蓝色”),并有一个象样的 trav子:

String[] colors = new String[] { "Blue", "Red", "Yellow" };
Node start = db.index().forNodes( "colors" ).get( "color", colors[0] ).getSingle();
Traversal.description().uniqueness( Uniqueness.RELATIONSHIP_GLOBAL ).breadthFirst().relationships( Types.NEXT, Direction.OUTGOING ).evaluator( new Evaluator()
{
    @Override
    public Evaluation evaluate( Path path )
    {
        String currentColor = (String) path.endNode().getProperty( "color" );
        boolean endOfTheLine = path.length()+1 >= colors.length;
        return currentColor.equals( colors[path.length()] ) ?
                Evaluation.of( endOfTheLine, !endOfTheLine ) : Evaluation.EXCLUDE_AND_PRUNE;
    }
} ).traverse( start )

我现在赞扬你的工作领域, trav客们做了出色的工作!

问题回答

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