CouchDB.NET 0.5.2-pre-alpha

CouchDB.NET

A .NET driver for CouchDB. * Still in development *

LINQ-like queries

C# query example:

var houses = await housesDb.Documents
    .Where(h => 
        h.Owner.Name == "Bobby" && 
        (h.Floors.All(f => f.Area < 120) || h.Floors.Any(f => f.Area > 500))
    )
    .OrderByDescending(h => h.Owner.Name)
    .ThenByDescending(h => h.ConstructionDate)
    .Skip(0)
    .Take(50)
    .Select(
        h => h.Owner.Name, 
        h => h.Address,
        h => h.ConstructionDate)
    .UseBookmark("g1AAAABweJzLY...")
    .WithReadQuorum(150)
    .UpdateIndex()
    .FromStable()
    .ToListAsync();

The produced Mango JSON:

{
    "selector":{ 
        "owner.name":"Bobby",
	"$or":[
    	    {"floors":{"$allMatch":{"area":{"$lt":120}}}},
            {"floors":{"$elemMatch":{"area":{"$gt":500}}}}
    	]
    },
    "limit":50,
    "skip":0,
    "sort":[
    	{"owner.name":"desc"},
    	{"construction_date":"desc"}
    ],
    "fields":[
	    "owner.name",
	    "address",
	    "construction_date"
        ],
    "bookmark":"g1AAAABweJzLY...",
    "r":150,
    "update":true,
    "stable":true
}

Getting started

• Install it from NuGet: https://www.nuget.org/packages/CouchDB.NET
• Create a client:

  var client = new CouchClient("http://127.0.0.1:5984");
  

• If authentication needed:

  client.ConfigureAuthentication("myusername", "mypassword");
  

• Extend CouchEntity in every model class:

  public class House : CouchEntity
  

• Use the JsonProperty attribute if you need to override default names:

  [JsonProperty("construction_date")]
  public DateTime ConstructionDate { get; set; }
  

Client operations

var allDbs = await client.GetDatabasesNamesAsync();
var tasks = await client.GetActiveTasksAsync();
// CRUD
var db = client.GetDatabase<House>("dbName");
await client.AddDatabaseAsync("dbName");
await client.RemoveDatabaseAsync("dbName");

Database operations

await db.CompactAsync();
await housesDb.NewIndexAsync(...) // Late in the README
var info = await db.GetInfoAsync();

Documents operations

// CRUD
await housesDb.Documents.AddAsync(house);
await housesDb.Documents.UpdateAsync(house);
await housesDb.Documents.RemoveAsync(house);
var house = await housesDb.Documents.FindAsync(houseId);
// Bulk
await housesDb.Documents.AddRangeAsync(houses);
await housesDb.Documents.UpdateRangeAsync(houses);
var houses = await housesDb.Documents.FindAsync(houseId1, houseId2, houseId3);
var houses = await housesDb.Documents.FindAsync(houseIdArray);
// Enebles stats in queries
housesDb.Documents.EnableStats();
var stats = housesDb.Documents.LastExecutionStats;
// Bookmakrs
var bookmark = housesDb.Documents.LastBookmark;
// Find
var allHouses = await housesDb.Documents.ToListAsync();
var bobbysOnes = await housesDb.Documents.Where(h => h.Owner.Name == "Bobby").ToListAsync();

Indexes (WIP)

C# example:

await housesDb.NewIndexAsync(s => 
        s.Descending(h => h.Address)
            .ThenDescending(h => h.ConstructionDate), 
        name: "useless_index",
        designDocumentName: "my_design"
    );

To JSON:

{
    "index":{
        "fields":[
            {"address":"desc"},
            {"construction_date":"desc"}
        ]
    },
    "name":"useless_index",
    "ddoc":"my_design",
    "type":"json"
}