Question

在我的Cypher查询中，我有以下模式理解：

[ (parentD)<-[:DEFINED_BY]-(ch1:Characteristic)<-[:SET_ON]-(v1:Value)-[:SET_FOR]->(childD) | 
  {characteristicId: id(ch1),  value: v1.value, valueType: ch1.valueType, visualMode: ch1.visualMode} ] AS valuedCharacteristics

我已将parentCharacteristic添加到我的SDN 4 Characteristic实体：

@NodeEntity
public class Characteristic extends Votable {

    private final static String DEPENDS_ON = "DEPENDS_ON";

    @Relationship(type = DEPENDS_ON, direction = Relationship.OUTGOING)
    private Characteristic parentCharacteristic;

...

}

现在我需要扩展我的模式理解并添加一个条件，以便返回与之前相同的Characteristic集，除了那些parentCharacteristic != NULL和模式理解的人也应该返回Characteristic我将ID集合中的{includeCharacteristicIds} Characteristic作为参数提供给此查询。

为了避免所有Characteristic没有孩子WHERE NOT ((ch1)<-[:DEPENDS_ON]-())我添加了以下条件：

[ (parentD)<-[:DEFINED_BY]-(ch1:Characteristic)<-[:SET_ON]-(v1:Value)-[:SET_FOR]->(childD) WHERE NOT ((ch1)<-[:DEPENDS_ON]-()) | 
  {characteristicId: id(ch1),  value: v1.value, valueType: ch1.valueType, visualMode: ch1.visualMode} ] AS valuedCharacteristics

所以完整的模式理解现在看起来像：

Characteristic

但此Characteristic列表的其他内容如何在ID集合中返回{includeCharacteristicIds} string s; Console.WriteLine("Enter What you want to write in your File : "); s = Convert.ToString(Console.ReadLine()); using (StreamWriter sw = new StreamWriter(@"E:/File.txt")) { sw.Write(s); sw.Close(); } using (StreamReader r = new StreamReader(@"E:/File.txt")) { char[] buffer = new char[1024]; int read; int line = 0; while ((read = r.ReadBlock(buffer, 0, buffer.Length)) > 0) { for (int i = 0; i < read; i++) { if (buffer[i] == '\n' && buffer[i]=='\r') { line++; } } //Console.WriteLine(buffer[i]); } Console.WriteLine("Total Lines Are : " + line); }？

请帮助扩展此查询。

Answer 1

你可以将这两个条件与这样的OR语句结合起来......

WHERE NOT ((ch1)<-[:DEPENDS_ON]-()) OR id(ch1) IN myIDs

模式理解中的WHERE就像MATCH条件的WHERE一样。

Neo4j Cypher模式的理解和条件

1 个答案: