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Elasticsearch.Net and NEST: the .NET clients [1.x] » Core » Bulk
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Bulkedit

NEST long supported bulk index and deletes (through IndexMany() and DeleteMany()) but this shielded you from all that the Elasticsearch _bulk api enpoint has to offer. Now you can use Bulk() to create any bulk request you’d like. E.g if you want to do index/create/delete’s in a certain order.

Fluent DSLedit

var result = client.Bulk(b => b
    .Index<ElasticSearchProject>(i => i
        .Document(new ElasticSearchProject {Id = 2})
    )
    .Create<ElasticSearchProject>(c => c
        .Document(new ElasticSearchProject { Id = 3 })
    )
    .Delete<ElasticSearchProject>(d => d
        .Document(new ElasticSearchProject { Id = 4 })
    )
);

Each bulk operation can also be annotated with the right behaviors

.Index<ElasticSearchProject>(i => i
    .Routing(...)
    .Refresh(...)
    .Percolate(...)
    .Parent(...)
    .Consistency(...)
    .Version(...)
    .VersionType(...)
    .Document(new ElasticSearchProject { Id = 2 })
)

Another approach to writing a complex bulk call:

var descriptor = new BulkDescriptor();

foreach (var i in Enumerable.Range(0, 1000))
{
    descriptor.Index<ElasticSearchProject>(op => op
        .Document(new ElasticSearchProject {Id = i})
    );
}

var result = client.Bulk(descriptor);

Object Initializer Syntaxedit

Bulk calls can also be constructed using the object initializer syntax:

var project = new ElasticsearchProject { Id = 4, Name = "new-project" };

var request = new BulkRequest()
{
    Refresh = true,
    Consistency = Consistency.One,
    Operations = new List<IBulkOperation>
    {
        { new BulkIndexOperation<ElasticsearchProject>(project) { Id= "2"} },
        { new BulkDeleteOperation<ElasticsearchProject>(6) },
        { new BulkCreateOperation<ElasticsearchProject>(project) { Id = "6" } },
        { new BulkUpdateOperation<ElasticsearchProject, object>(project, new { Name = "new-project2"}) { Id = "3" } },
    }
};

var response = client.Bulk(request);
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