Library provides linq syntax and allows you to build OData queries based on the data model

• Expression is not used to Compile(), which generates MSIL code, which leads to memory leaks
• Support:
  • nested OData extenders with a choice of filtering
  • operators all, any, in
  • date functions date
  • string functions contains, substringof, toupper, tolower

To install OData.QueryBuilder from Visual Studio, find OData.QueryBuilder in the NuGet package manager user interface or enter the following command in the package manager console:

Install-Package OData.QueryBuilder -Version 1.0.0

To add a link to the main dotnet project, run the following command line:

dotnet add -v 1.0.0 OData.QueryBuilder

1. Build instance

   As soon as possible, create a new instance of the OData.QueryBuilder object indicating the data models and the base path:

   var odataQueryBuilder = new ODataQueryBuilder<Your entity model>(<base_url>);

2. Specify the resource for which the request will be built

   odataQueryBuilder.For<Your data model>(s => s.<Your resource model>)

3. Select request type

   The builder allows you to build queries on the key and the list:

   • ByKey
     • expand
       • filter
       • select
       • orderby
       • orderby desc
       • top
     • select
   • ByList
     • expand
       • filter
       • select
       • orderby
       • orderby desc
       • top
     • filter
     • select
     • orderby
     • orderby desc
     • top
     • skip
     • count

4. Get Uri request or collection of operators from the builder

   odataQueryBuilder.ToUri()
   odataQueryBuilder.ToDictionary()

var uri = new ODataQueryBuilder<ODataInfoContainer>("http://mock/odata")
    .For<ODataTypeEntity>(s => s.ODataType)
    .ByKey(223123123)
    .ToUri()

http://mock/odata/ODataType(223123123)

var uri = new ODataQueryBuilder<ODataInfoContainer>("http://mock/odata")
    .For<ODataTypeEntity>(s => s.ODataType)
    .ByKey("223123123")
    .ToUri()

http://mock/odata/ODataType("223123123")

var uri = new ODataQueryBuilder<ODataInfoContainer>("http://mock/odata")
    .For<ODataTypeEntity>(s => s.ODataType)
    .ByList()
    .ToUri()

http://mock/odata/ODataType

.Select(s => s.Id)

$select=Id

.Select(s => new { s.Id, s.Sum, s.Type })

$select=Id,Sum,Type

.Expand(s => s.BaseType)

$expand=BaseType

.Expand(s => new { s.BaseType, s.ODataKind })

$expand=BaseType,ODataKind

.Expand(f => f
    .For<ODataKindEntity>(s => s.ODataKind)
    .Expand(s=> s
        .For<ODataCodeEntity>(s => s.ODataCode)
        .Filter(s => s.IdKind == 1)
        .OrderBy(s => s.IdKind)
        .Top(1)
        .Select(s => s.IdCode));
})

$expand=ODataKind($expand=ODataCode($filter=IdKind eq 1;$orderby=IdKind;$top=1;$select=IdCode))

.Filter(s => s.ODataKind.ODataCode.Code >= "test_code" || s.IdType >= 5)

$filter=ODataKind/ODataCode/IdCode eq 'test_code' or IdType ge 5

.Filter(s => s.IdRule != default(int?) && s.IdRule == null)

$filter=IdRule ne null and IdRule eq null

.Filter(s => s.ODataKind.OpenDate == DateTime.Today or s.ODataKind.OpenDate == new DateTime(2019, 7, 9)) or s.ODataKind.OpenDate == DateTime.Now)

$filter=ODataKind/OpenDate eq 2019-02-09T00:00:00Z or ODataKind/OpenDate eq 2019-02-09T00:00:00Z or ODataKind/OpenDate eq 2019-02-09T15:10:20Z

.Filter(s => s.IsActive && s.IsOpen == true && !s.ODataKind.ODataCode.IdActive)

$filter=IsActive and IsOpen eq true and not ODataKind/ODataCode/IdActive

.Filter(s => s.ODataKind.Color == ColorEnum.Blue)

$filter=ODataKind/Color eq 2

.OrderBy(s => s.IdType)

$orderby=IdType asc

.OrderBy(s => new { s.IdType, s.Sum })

$orderby=IdType,Sum asc

.OrderByDescending(s => s.IdType)

$orderby=IdType desc

.OrderByDescending(s => new { s.IdType, s.Sum })

$orderby=IdType,Sum desc

.Count()

$count=true

.Count(false)

$count=false

.Skip(12)

$skip=12

.Top(100)

$top=100

.Filter((s, f, o) => o.In(s.ODataKind.ODataCode.Code, new[] { "123", "512" }) && o.In(s.IdType, new[] { 123, 512 }))

$filter=ODataKind/ODataCode/Code in ('123','512') and IdType in (123,512)

.Filter((s, f, o) => o.Any(s.ODataKind.ODataCodes, v => v.IdCode == 1)

$filter=ODataKind/ODataCodes/any(v:v/IdCode eq 1)

.Filter((s, f, o) => o.All(s.ODataKind.ODataCodes, v => v.IdActive))

$filter=ODataKind/ODataCodes/all(v:v/IdActive)

.Filter((s, f) => f.Date(s.Open) == DateTime.Today)

$filter=date(Open) eq 2019-02-09T00:00:00Z

.Filter((s, f) => f.Contains(s.ODataKind.ODataCode.Code, "W"))

$filter=contains(ODataKind/ODataCode/Code,'W')

.Filter((s, f) => f.SubstringOf("W", s.ODataKind.ODataCode.Code))

$filter=substringof('W',ODataKind/ODataCode/Code)

.Filter((s, f) => f.ToUpper(s.ODataKind.ODataCode.Code) == "TEST_CODE")

$filter=toupper(ODataKind/ODataCode/Code) eq 'TEST_CODE'

.Filter((s, f) => f.ToLower(s.ODataKind.ODataCode.Code) == "test_code")

$filter=tolower(ODataKind/ODataCode/Code) eq 'test_code'

.Filter((s, f) => f.Concat(s.ODataKind.ODataCode.Code, "_1") == "test_code_1")

$filter=concat(ODataKind/ODataCode/Code, '_1') eq 'test_code_1'

.Filter((s, f) => s.ODataKind.Color == f.ConvertEnumToString(ColorEnum.Blue))

$filter=ODataKind/Color eq 'Blue'

.Filter((s, f) => s.ODataKind.OpenDate == f.ConvertDateTimeToString(new DateTime(2019, 2, 9), "yyyy-MM-dd"))

$filter=ODataKind/OpenDate eq 2019-02-09

.Filter((s, f) => s.ODataKind.OpenDate == f.ConvertDateTimeToString(new DateTimeOffset(new DateTime(2019, 2, 9)), "yyyy-MM-dd"))

$filter=ODataKind/OpenDate eq 2019-02-09

⚠️ May result in loss of control over the expected result.

Suppression of inclusion excludes the whole expression from the request

By default, suppression of function and operator argument exceptions is disabled. To enable it, you must pass the configuration ODataQueryBuilderOptions when initializing the builder with initialization of the SuppressExceptionOfNullOrEmptyFunctionArgs and SuppressExceptionOfNullOrEmptyOperatorArgs properties.

var builder = new ODataQueryBuilder<ODataInfoContainer>("http://mock/odata", new ODataQueryBuilderOptions {
    SuppressExceptionOfNullOrEmptyFunctionArgs = true,
    SuppressExceptionOfNullOrEmptyOperatorArgs = true,
});

var uri = builder
    .For<ODataTypeEntity>(s => s.ODataType)
    .ByList()
    .Filter((s, f, o) => o.In(s.ODataKind.ODataCode.Code, new string[0]) or o.In(s.ODataKind.ODataCode.Code, null)
        && f.Contains(s.ODataKind.ODataCode.Code, default(string)) 
        && o.In(s.IdType, new[] { 123, 512 }))
    .ToUri()

http://mock/odata/ODataType?$filter=IdType in (123,512)