Question

原来的Cypher：

select distinct on (src, dest) i.*
from init 8
order by src, dest, cost_to_here;

类似的东西：

    MATCH (user)
    WHERE user.name IN ['Joe', 'John', 'Sara', 'Maria', 'Steve'] 
    RETURN user

当Neo4jClient的完整文档可用时？）

Answer 1

要更改代码，您可以这样做：

public Nodes Parse(string[] str)
{
    var query = graphClient.Cypher
        .Match("(a)-[]-?(b)")
        .Where("a.Name IN $namesParam")
        .WithParam("namesParam", str)
        .Return((a,b) => new Nodes {
            Source = a.As<Vertex>(),
            Peers = b.CollectAs<Vertex>()
        });
    var result = query.Results.FirstOrDefault();
    return result;
}

要在顶部执行您的查询，您可以这样做：

var names = new [] {"Joe", "John", "Sara", "Maria", "Steve"};
var users = graphClient
    .Match("(user)")
    .Where("user.name IN $names")
    .WithParam("names", names)
    .Return(user => user.As<User>())
    .Results;

我担心可能永远不会有客户的完整文档，除非其他人想要贡献。

Answer 2

  var names = new [] {"Joe", "John", "Sara", "Maria", "Steve"};
  var users = graphClient
      .Unwind(names, "name")
      .Match("(user)")
      .Where("user.name = name")          
      .Return(user => user.As<User>())
      .Results;

如何使用params数组进行Neo4jClient查询？

2 个答案: