Chilkat Online Tools

GetQueryExecution delphiAx Example

Athena

var
rest: TChilkatRest;
success: Integer;
authAws: TChilkatAuthAws;
json: TChilkatJsonObject;
sbRequestBody: TChilkatStringBuilder;
sbResponseBody: TChilkatStringBuilder;
respStatusCode: Integer;
jResp: TChilkatJsonObject;
EffectiveEngineVersion: WideString;
SelectedEngineVersion: WideString;
Query: WideString;
Catalog: WideString;
Database: WideString;
QueryExecutionId: WideString;
S3AclOption: WideString;
EncryptionOption: WideString;
KmsKey: WideString;
ExpectedBucketOwner: WideString;
OutputLocation: WideString;
StatementType: WideString;
DataManifestLocation: WideString;
DataScannedInBytes: Integer;
EngineExecutionTimeInMillis: Integer;
QueryPlanningTimeInMillis: Integer;
QueryQueueTimeInMillis: Integer;
ServiceProcessingTimeInMillis: Integer;
TotalExecutionTimeInMillis: Integer;
ErrorCategory: Integer;
ErrorMessage: WideString;
ErrorType: Integer;
Retryable: Integer;
CompletionDateTime: Integer;
State: WideString;
StateChangeReason: WideString;
SubmissionDateTime: Integer;
WorkGroup: WideString;

begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

rest := TChilkatRest.Create(Self);

authAws := TChilkatAuthAws.Create(Self);
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.ControlInterface);

// URL: https://athena.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := rest.Connect('athena.us-west-2.amazonaws.com',443,1,1);
if (success <> 1) then
  begin
    Memo1.Lines.Add('ConnectFailReason: ' + IntToStr(rest.ConnectFailReason));
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// 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

json := TChilkatJsonObject.Create(Self);
json.UpdateString('QueryExecutionId','string');

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

// {
//   "QueryExecutionId": "string"
// }

rest.AddHeader('Content-Type','application/x-amz-json-1.1');
rest.AddHeader('X-Amz-Target','AmazonAthena.GetQueryExecution');

sbRequestBody := TChilkatStringBuilder.Create(Self);
json.EmitSb(sbRequestBody.ControlInterface);
sbResponseBody := TChilkatStringBuilder.Create(Self);
success := rest.FullRequestSb('POST','/',sbRequestBody.ControlInterface,sbResponseBody.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;
respStatusCode := rest.ResponseStatusCode;
Memo1.Lines.Add('response status code = ' + IntToStr(respStatusCode));
if (respStatusCode <> 200) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(rest.ResponseHeader);
    Memo1.Lines.Add('Response Body:');
    Memo1.Lines.Add(sbResponseBody.GetAsString());
    Exit;
  end;

jResp := TChilkatJsonObject.Create(Self);
jResp.LoadSb(sbResponseBody.ControlInterface);

// 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

EffectiveEngineVersion := jResp.StringOf('QueryExecution.EngineVersion.EffectiveEngineVersion');
SelectedEngineVersion := jResp.StringOf('QueryExecution.EngineVersion.SelectedEngineVersion');
Query := jResp.StringOf('QueryExecution.Query');
Catalog := jResp.StringOf('QueryExecution.QueryExecutionContext.Catalog');
Database := jResp.StringOf('QueryExecution.QueryExecutionContext.Database');
QueryExecutionId := jResp.StringOf('QueryExecution.QueryExecutionId');
S3AclOption := jResp.StringOf('QueryExecution.ResultConfiguration.AclConfiguration.S3AclOption');
EncryptionOption := jResp.StringOf('QueryExecution.ResultConfiguration.EncryptionConfiguration.EncryptionOption');
KmsKey := jResp.StringOf('QueryExecution.ResultConfiguration.EncryptionConfiguration.KmsKey');
ExpectedBucketOwner := jResp.StringOf('QueryExecution.ResultConfiguration.ExpectedBucketOwner');
OutputLocation := jResp.StringOf('QueryExecution.ResultConfiguration.OutputLocation');
StatementType := jResp.StringOf('QueryExecution.StatementType');
DataManifestLocation := jResp.StringOf('QueryExecution.Statistics.DataManifestLocation');
DataScannedInBytes := jResp.IntOf('QueryExecution.Statistics.DataScannedInBytes');
EngineExecutionTimeInMillis := jResp.IntOf('QueryExecution.Statistics.EngineExecutionTimeInMillis');
QueryPlanningTimeInMillis := jResp.IntOf('QueryExecution.Statistics.QueryPlanningTimeInMillis');
QueryQueueTimeInMillis := jResp.IntOf('QueryExecution.Statistics.QueryQueueTimeInMillis');
ServiceProcessingTimeInMillis := jResp.IntOf('QueryExecution.Statistics.ServiceProcessingTimeInMillis');
TotalExecutionTimeInMillis := jResp.IntOf('QueryExecution.Statistics.TotalExecutionTimeInMillis');
ErrorCategory := jResp.IntOf('QueryExecution.Status.AthenaError.ErrorCategory');
ErrorMessage := jResp.StringOf('QueryExecution.Status.AthenaError.ErrorMessage');
ErrorType := jResp.IntOf('QueryExecution.Status.AthenaError.ErrorType');
Retryable := jResp.IntOf('QueryExecution.Status.AthenaError.Retryable');
CompletionDateTime := jResp.IntOf('QueryExecution.Status.CompletionDateTime');
State := jResp.StringOf('QueryExecution.Status.State');
StateChangeReason := jResp.StringOf('QueryExecution.Status.StateChangeReason');
SubmissionDateTime := jResp.IntOf('QueryExecution.Status.SubmissionDateTime');
WorkGroup := jResp.StringOf('QueryExecution.WorkGroup');

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

// {
//   "QueryExecution": {
//     "EngineVersion": {
//       "EffectiveEngineVersion": "string",
//       "SelectedEngineVersion": "string"
//     },
//     "Query": "string",
//     "QueryExecutionContext": {
//       "Catalog": "string",
//       "Database": "string"
//     },
//     "QueryExecutionId": "string",
//     "ResultConfiguration": {
//       "AclConfiguration": {
//         "S3AclOption": "string"
//       },
//       "EncryptionConfiguration": {
//         "EncryptionOption": "string",
//         "KmsKey": "string"
//       },
//       "ExpectedBucketOwner": "string",
//       "OutputLocation": "string"
//     },
//     "StatementType": "string",
//     "Statistics": {
//       "DataManifestLocation": "string",
//       "DataScannedInBytes": number,
//       "EngineExecutionTimeInMillis": number,
//       "QueryPlanningTimeInMillis": number,
//       "QueryQueueTimeInMillis": number,
//       "ServiceProcessingTimeInMillis": number,
//       "TotalExecutionTimeInMillis": number
//     },
//     "Status": {
//       "AthenaError": {
//         "ErrorCategory": number,
//         "ErrorMessage": "string",
//         "ErrorType": number,
//         "Retryable": boolean
//       },
//       "CompletionDateTime": number,
//       "State": "string",
//       "StateChangeReason": "string",
//       "SubmissionDateTime": number
//     },
//     "WorkGroup": "string"
//   }
// }