Chilkat Online Tools

GetQueryResults Swift3 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.update("NextToken", value: "string")
    json.update("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.string(of: "NextToken")
    var UpdateCount: Int = jResp.int(of: "UpdateCount").intValue
    var i: Int = 0
    var count_i: Int = jResp.size(ofArray: "ResultSet.ResultSetMetadata.ColumnInfo").intValue
    while i < count_i {
        jResp.i = i
        CaseSensitive = jResp.int(of: "ResultSet.ResultSetMetadata.ColumnInfo[i].CaseSensitive").intValue
        CatalogName = jResp.string(of: "ResultSet.ResultSetMetadata.ColumnInfo[i].CatalogName")
        Label = jResp.string(of: "ResultSet.ResultSetMetadata.ColumnInfo[i].Label")
        Name = jResp.string(of: "ResultSet.ResultSetMetadata.ColumnInfo[i].Name")
        Nullable = jResp.string(of: "ResultSet.ResultSetMetadata.ColumnInfo[i].Nullable")
        Precision = jResp.int(of: "ResultSet.ResultSetMetadata.ColumnInfo[i].Precision").intValue
        Scale = jResp.int(of: "ResultSet.ResultSetMetadata.ColumnInfo[i].Scale").intValue
        SchemaName = jResp.string(of: "ResultSet.ResultSetMetadata.ColumnInfo[i].SchemaName")
        TableName = jResp.string(of: "ResultSet.ResultSetMetadata.ColumnInfo[i].TableName")
        v_Type = jResp.string(of: "ResultSet.ResultSetMetadata.ColumnInfo[i].Type")
        i = i + 1
    }

    i = 0
    count_i = jResp.size(ofArray: "ResultSet.Rows").intValue
    while i < count_i {
        jResp.i = i
        j = 0
        count_j = jResp.size(ofArray: "ResultSet.Rows[i].Data").intValue
        while j < count_j {
            jResp.j = j
            VarCharValue = jResp.string(of: "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
    // }

}