Cassandra Keyspaces repository .net

public class TestRepository : ITestRepository
{
    private readonly CassandraSessionCache _cassandra;
    private Mapper _mapper;

    public TestRepository(CassandraSessionCache cassandra)
    {
        _cassandra = cassandra;
    }

    public async Task DeleteAsync(Guid id, string keySpace)
    {
        SetSessionAndMapper(keySpace);

        await _mapper.DeleteAsync<Test>("WHERE id = ?", id);
    }

    public async Task<Install> GetAsync(string id, string keySpace)
    {
        SetSessionAndMapper(keySpace);

        return await _mapper.FirstOrDefaultAsync<Test>("SELECT * FROM \"Test\" WHERE id = ?", id);
    }

    public async Task PostAsync(Test data, string keySpace)
    {
        SetSessionAndMapper(keySpace);

        await _mapper.InsertAsync(data);
    }

    private void SetSessionAndMapper(string keySpace)
    {
        var session = _cassandra.GetSession(keySpace);
        _mapper = new Mapper(session);
    }
}

Source: stackoverflow.com

Cassandra Keyspaces repository .net

My current solve:Create Cluster:cluster = Cluster.Builder()  .AddContactPoint(cassandraData.ContactPoint)  .WithPort(int.Parse(cassandraData.Port))  .WithCredentials(cassandraData.User, cassandraData.Password)  .Build();After that i inject this by dependency injection to my Session Cache:public CassandraSessionCache(Cluster cluster){  _cluster = cluster;  _sessions = new ConcurrentDictionary<string, Lazy<ISession>>();}public ISession GetSession(string keyspaceName){  if (!_sessions.ContainsKey(keyspaceName))    _sessions.GetOrAdd(keyspaceName, key => new Lazy<ISession>(() =>   _cluster.Connect(key)));  var result = _sessions[keyspaceName];  return result.Value;}I Create also Map to Cassandra and use it my startup class.After this configuration my repository look like this:public class TestRepository : ITestRepository
{
    private readonly CassandraSessionCache _cassandra;
    private Mapper _mapper;

    public TestRepository(CassandraSessionCache cassandra)
    {
        _cassandra = cassandra;
    }

    public async Task DeleteAsync(Guid id, string keySpace)
    {
        SetSessionAndMapper(keySpace);

        await _mapper.DeleteAsync<Test>("WHERE id = ?", id);
    }

    public async Task<Install> GetAsync(string id, string keySpace)
    {
        SetSessionAndMapper(keySpace);

        return await _mapper.FirstOrDefaultAsync<Test>("SELECT * FROM \"Test\" WHERE id = ?", id);
    }

    public async Task PostAsync(Test data, string keySpace)
    {
        SetSessionAndMapper(keySpace);

        await _mapper.InsertAsync(data);
    }

    private void SetSessionAndMapper(string keySpace)
    {
        var session = _cassandra.GetSession(keySpace);
        _mapper = new Mapper(session);
    }
}

Source: stackoverflow.com

Similar codes

0 vote179 views1 answer
Get vector direction unity
C#
0 vote215 views1 answer
C# check if pdf is protected without password
C#
3 votes259 views1 answer
Unity detect any key
C#Unity
29 votes202 views3 answers
Delay in unity
C#
0 vote175 views1 answer
Asp.net render control to string
C#
1 vote183 views1 answer
Visual studio windows form exit button
C#
0 vote188 views1 answer
How to start grid from where the data starts in c# charts
C#
0 vote194 views1 answer
When creating a new boolean column in an existing table how to set the default value as true in c# models code first
C#
1 vote179 views2 answers
C# get last day of month
C#
3 votes201 views1 answer
How to call something once in update
C#