Chilkat Online Tools

GetQueryResults Swift Example

Athena

func chilkatTest() {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let rest = CkoRest()
    var success: Bool

    let authAws = CkoAuthAws()
    authAws.AccessKey = "AWS_ACCESS_KEY"
    authAws.SecretKey = "AWS_SECRET_KEY"

    // Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
    authAws.Region = "us-west-2"
    authAws.ServiceName = "athena"
    // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
    rest.SetAuthAws(authAws)

    // URL: https://athena.us-west-2.amazonaws.com/
    // Use the same region as specified above.
    success = rest.Connect("athena.us-west-2.amazonaws.com", port: 443, tls: true, autoReconnect: true)
    if success != true {
        print("ConnectFailReason: \(rest.ConnectFailReason.intValue)")
        print("\(rest.LastErrorText)")
        return
    }

    // The following code creates the JSON request body.
    // The JSON created by this code is shown below.

    // Use this online tool to generate code from sample JSON:
    // Generate Code to Create JSON

    let json = CkoJsonObject()
    json.UpdateInt("MaxResults", value: 123)
    json.UpdateString("NextToken", value: "string")
    json.UpdateString("QueryExecutionId", value: "string")

    // The JSON request body created by the above code:

    // {
    //   "MaxResults": number,
    //   "NextToken": "string",
    //   "QueryExecutionId": "string"
    // }

    rest.AddHeader("Content-Type", value: "application/x-amz-json-1.1")
    rest.AddHeader("X-Amz-Target", value: "AmazonAthena.GetQueryResults")

    let sbRequestBody = CkoStringBuilder()
    json.EmitSb(sbRequestBody)
    let sbResponseBody = CkoStringBuilder()
    success = rest.FullRequestSb("POST", uriPath: "/", requestBody: sbRequestBody, responseBody: sbResponseBody)
    if success != true {
        print("\(rest.LastErrorText)")
        return
    }

    var respStatusCode: Int = rest.ResponseStatusCode.intValue
    print("response status code = \(respStatusCode)")
    if respStatusCode != 200 {
        print("Response Header:")
        print("\(rest.ResponseHeader)")
        print("Response Body:")
        print("\(sbResponseBody.GetAsString())")
        return
    }

    let jResp = CkoJsonObject()
    jResp.LoadSb(sbResponseBody)

    // The following code parses the JSON response.
    // A sample JSON response is shown below the sample code.

    // Use this online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    var CaseSensitive: Int
    var CatalogName: String?
    var Label: String?
    var Name: String?
    var Nullable: String?
    var Precision: Int
    var Scale: Int
    var SchemaName: String?
    var TableName: String?
    var v_Type: String?
    var j: Int
    var count_j: Int
    var VarCharValue: String?

    var NextToken: String? = jResp.StringOf("NextToken")
    var UpdateCount: Int = jResp.IntOf("UpdateCount").intValue
    var i: Int = 0
    var count_i: Int = jResp.SizeOfArray("ResultSet.ResultSetMetadata.ColumnInfo").intValue
    while i < count_i {
        jResp.I = i
        CaseSensitive = jResp.IntOf("ResultSet.ResultSetMetadata.ColumnInfo[i].CaseSensitive").intValue
        CatalogName = jResp.StringOf("ResultSet.ResultSetMetadata.ColumnInfo[i].CatalogName")
        Label = jResp.StringOf("ResultSet.ResultSetMetadata.ColumnInfo[i].Label")
        Name = jResp.StringOf("ResultSet.ResultSetMetadata.ColumnInfo[i].Name")
        Nullable = jResp.StringOf("ResultSet.ResultSetMetadata.ColumnInfo[i].Nullable")
        Precision = jResp.IntOf("ResultSet.ResultSetMetadata.ColumnInfo[i].Precision").intValue
        Scale = jResp.IntOf("ResultSet.ResultSetMetadata.ColumnInfo[i].Scale").intValue
        SchemaName = jResp.StringOf("ResultSet.ResultSetMetadata.ColumnInfo[i].SchemaName")
        TableName = jResp.StringOf("ResultSet.ResultSetMetadata.ColumnInfo[i].TableName")
        v_Type = jResp.StringOf("ResultSet.ResultSetMetadata.ColumnInfo[i].Type")
        i = i + 1
    }

    i = 0
    count_i = jResp.SizeOfArray("ResultSet.Rows").intValue
    while i < count_i {
        jResp.I = i
        j = 0
        count_j = jResp.SizeOfArray("ResultSet.Rows[i].Data").intValue
        while j < count_j {
            jResp.J = j
            VarCharValue = jResp.StringOf("ResultSet.Rows[i].Data[j].VarCharValue")
            j = j + 1
        }

        i = i + 1
    }

    // A sample JSON response body parsed by the above code:

    // {
    //   "NextToken": "string",
    //   "ResultSet": {
    //     "ResultSetMetadata": {
    //       "ColumnInfo": [
    //         {
    //           "CaseSensitive": boolean,
    //           "CatalogName": "string",
    //           "Label": "string",
    //           "Name": "string",
    //           "Nullable": "string",
    //           "Precision": number,
    //           "Scale": number,
    //           "SchemaName": "string",
    //           "TableName": "string",
    //           "Type": "string"
    //         }
    //       ]
    //     },
    //     "Rows": [
    //       {
    //         "Data": [
    //           {
    //             "VarCharValue": "string"
    //           }
    //         ]
    //       }
    //     ]
    //   },
    //   "UpdateCount": number
    // }

}