[英]C# Neo4J Query not Returning Node Properties
我有以下代碼來查詢Neo4J圖。 但是,即使返回了所有節點,它們的屬性在內部類中也被設置為null。
// Method to retrieve the passed functional family from the graph database
public void FromGraph(string funFam)
{
// Create a new client and connect to the database
var client = new GraphClient(new Uri("http://localhost:7474/db/data"), this.dbUsername, this.dbPassword);
client.Connect();
// Run the query
var queryResults = client.Cypher
.Match("(a:FunFam {name: '" + funFam + "'})-[*]-(b)")
.Return((a, b) => new
{
a = a.As<F>(),
b = b.As<K>()
})
.Results;
Console.WriteLine(queryResults);
Console.ReadLine();
}
// An internal class used to hold the FunFam node from the graph database
internal class F
{
// Private properties
private string consensus;
private string name;
// getters and setters
public string Consensus { get => consensus; set => consensus = value; }
public string Name { get => name; set => name = value; }
}
// An internal class used to hold the Kmer node from the graph database
internal class K
{
// Private properties
private string sequence;
private List<string> offsetAt0;
private List<string> offsetAt1;
private List<string> offsetAt2;
// Getters and setters
public string Sequence { get => sequence; set => sequence = value; }
public List<string> OffsetAt0 { get => offsetAt0; set => offsetAt0 = value; }
public List<string> OffsetAt1 { get => offsetAt1; set => offsetAt1 = value; }
public List<string> OffsetAt2 { get => offsetAt2; set => offsetAt2 = value; }
}
在調試器中給出以下空結果:
您的屬性在UpperCamelCase中,但是數據庫中的字段為小寫。 Neo4jClient設置屬性,您需要使用JsonProperty屬性裝飾它們:
[JsonProperty("name")]
public string Name {get:set:}
例如
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