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Elasticsearch ​

Gridify.Elasticsearch is an extension of Gridify, that provides an ability to generate Elasticsearch DSL queries.

Gridify.Elasticsearch Package ​

The Gridify.Elasticsearch package has a bunch of extension methods that allow to convert Gridify filters and sortings to Elasticsearch DSL queries using Elastic.Clients.Elasticsearch .NET client.

Installation ​

Package Manager ​

shell
Install-Package Gridify.Elasticsearch -Version 2.15.1

.NET CLI ​

shell
dotnet add package Gridify.Elasticsearch --version 2.15.1

Configurations ​

CustomElasticsearchNamingAction ​

Specifies how field names are inferred from CLR property names. By default, Elastic.Clients.Elasticsearch uses camel-case property names.

  • If null (default behavior) CLR property EmailAddress will be inferred as emailAddress Elasticsearch document field name.
  • If, e.g., p => p, the CLR property EmailAddress will be inferred as EmailAddress Elasticsearch document field name.

Default ​

csharp
await client.SearchAsync<User>(s => s
    .Index("users")
    .ApplyFiltering("emailAddress = test@test.com"));

this will make the next Elasticsearch query:

json
GET users/_search
{
  "query": {
    "term": {
      "emailAddress.keyword": {
        "value": "test@test.com"
      }
    }
  }
}

Customized: ​

csharp
GridifyGlobalConfiguration.CustomElasticsearchNamingAction = p => $"_{p}_";

await client.SearchAsync<User>(s => s
    .Index("users")
    .ApplyFiltering("emailAddress = test@test.com"));

this will make the next Elasticsearch query:

json
GET users/_search
{
  "query": {
    "term": {
      "_EmailAddress_.keyword": {
        "value": "test@test.com"
      }
    }
  }
}

Examples of usage ​

Without pre-initialized mapper ​

csharp
var gq = new GridifyQuery()
{
    Filter = "FirstName=John",
    Page = 1,
    PageSize = 20,
    OrderBy = "Age"
};

var response = await client.SearchAsync<User>(s => s
    .Index("users")
    .ApplyPaging(gq)
    .ApplyFiltering(gp)
    .ApplyOrdering(gp));

return response.Documents;
json
GET users/_search
{
  "query": {
    "term": {
      "firstName.keyword": {
        "value": "John"
      }
    }
  },
  "from": 0,
  "size": 20,
  "sort": [{
    "age": {
      "order": "asc"
    }
  }]
}

With custom mapping ​

csharp
var gq = new GridifyQuery()
{
    Filter = "name=John, surname=Smith, age=30, totalOrderPrice=45",
    Page = 1,
    PageSize = 20,
    OrderBy = "Age"
};

var mapper = new GridifyMapper<User>()
     .AddMap("name", x => x.FirstName)
     .AddMap("surname", x => x.LastName)
     .AddMap("age", x => x.Age)
     .AddMap("totalOrderPrice", x => x.Order.TotalSum);

var response = await client.SearchAsync<User>(s => s
    .Index("users")
    .ApplyFilteringOrderingPaging(gq));

return response.Documents;
json
GET users/_search
{
  "query": {
    "bool": {
      "must": [
        {
          "term": {
            "firstName.keyword": {
              "value": "John"
            }
          }
        },
        {
          "term": {
            "lastName.keyword": {
              "value": "Smith"
            }
          }
        },
        {
          "term": {
            "age": {
              "value": 30
            }
          }
        },
        {
          "term": {
            "order.totalSum": {
              "value": 45
            }
          }
        }
      ]
    }
  },
  "from": 0,
  "size": 20,
  "sort": [{
    "age": {
      "order": "asc"
    }
  }]
}

With CustomElasticsearchNamingAction initialized ​

By default, Elasticsearch converts property names to camel-case for document fields. That's Gridify.Elasticsearch extensions work by default. But if it's necessary to apply a custom naming policy, it can also be customized.

csharp
Func<string, string>? namingAction = p => $"_{p}_";
var mapper = new GridifyMapper<TestClass>(autoGenerateMappings: true)
{
   Configuration = { CustomElasticsearchNamingAction = namingAction }
};

var gq = new GridifyQuery()
{
    Filter = "FirstName=John",
    Page = 1,
    PageSize = 20,
    OrderBy = "Age"
};

var response = await client.SearchAsync<User>(s => s
    .Index("users")
    .ApplyFilteringOrderingPaging(gq));
json
GET users/_search
{
  "query": {
    "term": {
      "_FirstName_.keyword": {
        "value": "John"
      }
    }
  },
  "from": 0,
  "size": 20,
  "sort": [{
    "_Age_": {
      "order": "asc"
    }
  }]
}

WARNING

Gridify.Elasticsearch package does not support all of the advanced Gridify features like NestedFiltering