neo4j-如何设置带有属性值的标签 [英] neo4j - how to set label with property value

问题描述

我的节点没有标签，但是有一个NodeType属性

I have nodes without label but a property NodeType

是否可以使用NodeType属性的值设置这些节点的标签?

Is there a way to set the label of those nodes with the value of the NodeType property?

谢谢！

推荐答案

否，当前无法使用变量定义标签.

No, currently there is no possibility to define a label with a variable.

您必须在应用程序中执行此操作，方法是获取要在其上添加标签的所有节点，然后发送Cypher查询以添加该标签.

You'll have to do it in your application by fetching all nodes that you want to add a label on it and sending a Cypher Query to add this label.

PHP中的简单示例:

A quick example in PHP :

$nodes = $client->sendCypherQuery('MATCH (n) WHERE n.nodeType = "MyType" RETURN n');
foreach ($nodes as $node) {
    $label = $node->getProperty('nodeType');
    $id = $node->getId();
    $client->sendCypherQuery('MATCH (n) WHERE id(n) = '.$id.' SET n :'.$label;
}

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