CODEWITHSUNDEEP
c#neo4jclient
user7755452
user7755452

Reputation:

Neo4j- how to use WITH clause using c# client cypher

I am trying to get the results using WITH clause in C# neo4j client.
Since I am new to neo4j, I do not have any idea on how to get the results in C#.
Please help me with your suggestions

MATCH (cs:CrawlerInfo)
WITH cs, SIZE((cs)-[:CONTAINS]->()) as TotalResult
RETURN 
cs.CrawlerName,cs.Keyword,cs.SearchType,toint(TotalResult),cs.CrawlerInfoDate
order by toint(cs.CrawlerId) desc

Upvotes: 0

Views: 561

Answers (1)

Charlotte Skardon
Charlotte Skardon

Reputation: 6270

In Neo4jClient straight translation is the key, and should be discoverable via the API.

//gc = GraphClient instance
//CrawlerInfo is a class
gc.Cypher
    .Match("(cs:CrawlerInfo)")
    .With("cs, SIZE( (cs)-[:CONTAINS]->() ) as TotalResult")
    .Return((cs, TotalResult) => new
    {
        CrawlerName = cs.As<CrawlerInfo>().CrawlerName,
        Keyword = cs.As<CrawlerInfo>().Keyword,
        SearchType = cs.As<CrawlerInfo>().SearchType,
        CrawlerInfoDate = cs.As<CrawlerInfo>().CrawlerInfoDate,
        Size = Return.As<int>("toint(TotalResult)")
    })
    .OrderByDescending("toint(cs.CrawlerId)");

Personally, I would make my CrawlerInfo class look something like:

public class CrawlerInfo
{
    public int CrawlerId { get; set;}
    public string CrawlerName { get; set; }
    public string Keyword { get; set; }
    public string SearchType { get; set; }
    public string CrawlerInfoDate { get; set;}
}

Then you also don't/(shouldn't!) need to do the toint, which means you can do:

gc.Cypher
    .Match("(cs:CrawlerInfo)")
    .With("cs, SIZE( (cs)-[:CONTAINS]->() ) as TotalResult")
    .Return((cs, TotalResult) => new
    {
        CrawlerName = cs.As<CrawlerInfo>().CrawlerName,
        Keyword = cs.As<CrawlerInfo>().Keyword,
        SearchType = cs.As<CrawlerInfo>().SearchType,
        CrawlerInfoDate = cs.As<CrawlerInfo>().CrawlerInfoDate,
        Size = Return.As<int>("TotalResult")
    })
    .OrderByDescending("cs.CrawlerId");

Which is a bit tidier. I'd also be tempted to just return the CrawlerInfo object itself, rather than the properties (or make a small CrawlerInfoLite model if CrawlerInfo is massive):

gc.Cypher
    .Match("(cs:CrawlerInfo)")
    .With("cs, SIZE((cs)-[:CONTAINS]->()) as TotalResult")
    .Return((cs, TotalResult) => new
    {
        CrawlerInfo = cs.As<CrawlerInfo>(),
        Size = Return.As<int>("TotalResult")
    })
    .OrderByDescending("cs.CrawlerId");

Where CrawlerInfo is defined as:

public class CrawlerInfo
{
    public int CrawlerId { get; set;}
    public string CrawlerName { get; set; }
    public string Keyword { get; set; }
    public string SearchType { get; set; }
    public string CrawlerInfoDate { get; set;}
}

Upvotes: 1

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