BatchGetQueryExecution delphiDll Example
var
rest: HCkRest;
success: Boolean;
authAws: HCkAuthAws;
json: HCkJsonObject;
sbRequestBody: HCkStringBuilder;
sbResponseBody: HCkStringBuilder;
respStatusCode: Integer;
jResp: HCkJsonObject;
EffectiveEngineVersion: PWideChar;
SelectedEngineVersion: PWideChar;
Query: PWideChar;
Catalog: PWideChar;
Database: PWideChar;
QueryExecutionId: PWideChar;
S3AclOption: PWideChar;
EncryptionOption: PWideChar;
KmsKey: PWideChar;
ExpectedBucketOwner: PWideChar;
OutputLocation: PWideChar;
StatementType: PWideChar;
DataManifestLocation: PWideChar;
DataScannedInBytes: Integer;
EngineExecutionTimeInMillis: Integer;
QueryPlanningTimeInMillis: Integer;
QueryQueueTimeInMillis: Integer;
ServiceProcessingTimeInMillis: Integer;
TotalExecutionTimeInMillis: Integer;
ErrorCategory: Integer;
ErrorMessage: PWideChar;
ErrorType: Integer;
Retryable: Integer;
CompletionDateTime: Integer;
State: PWideChar;
StateChangeReason: PWideChar;
SubmissionDateTime: Integer;
WorkGroup: PWideChar;
ErrorCode: PWideChar;
i: Integer;
count_i: Integer;
begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
rest := CkRest_Create();
authAws := CkAuthAws_Create();
CkAuthAws_putAccessKey(authAws,'AWS_ACCESS_KEY');
CkAuthAws_putSecretKey(authAws,'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.)
CkAuthAws_putRegion(authAws,'us-west-2');
CkAuthAws_putServiceName(authAws,'athena');
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRest_SetAuthAws(rest,authAws);
// URL: https://athena.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := CkRest_Connect(rest,'athena.us-west-2.amazonaws.com',443,True,True);
if (success <> True) then
begin
Memo1.Lines.Add('ConnectFailReason: ' + IntToStr(CkRest_getConnectFailReason(rest)));
Memo1.Lines.Add(CkRest__lastErrorText(rest));
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 := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'QueryExecutionIds[0]','string');
// The JSON request body created by the above code:
// {
// "QueryExecutionIds": [
// "string"
// ]
// }
CkRest_AddHeader(rest,'Content-Type','application/x-amz-json-1.1');
CkRest_AddHeader(rest,'X-Amz-Target','AmazonAthena.BatchGetQueryExecution');
sbRequestBody := CkStringBuilder_Create();
CkJsonObject_EmitSb(json,sbRequestBody);
sbResponseBody := CkStringBuilder_Create();
success := CkRest_FullRequestSb(rest,'POST','/',sbRequestBody,sbResponseBody);
if (success <> True) then
begin
Memo1.Lines.Add(CkRest__lastErrorText(rest));
Exit;
end;
respStatusCode := CkRest_getResponseStatusCode(rest);
Memo1.Lines.Add('response status code = ' + IntToStr(respStatusCode));
if (respStatusCode <> 200) then
begin
Memo1.Lines.Add('Response Header:');
Memo1.Lines.Add(CkRest__responseHeader(rest));
Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(CkStringBuilder__getAsString(sbResponseBody));
Exit;
end;
jResp := CkJsonObject_Create();
CkJsonObject_LoadSb(jResp,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
i := 0;
count_i := CkJsonObject_SizeOfArray(jResp,'QueryExecutions');
while i < count_i do
begin
CkJsonObject_putI(jResp,i);
EffectiveEngineVersion := CkJsonObject__stringOf(jResp,'QueryExecutions[i].EngineVersion.EffectiveEngineVersion');
SelectedEngineVersion := CkJsonObject__stringOf(jResp,'QueryExecutions[i].EngineVersion.SelectedEngineVersion');
Query := CkJsonObject__stringOf(jResp,'QueryExecutions[i].Query');
Catalog := CkJsonObject__stringOf(jResp,'QueryExecutions[i].QueryExecutionContext.Catalog');
Database := CkJsonObject__stringOf(jResp,'QueryExecutions[i].QueryExecutionContext.Database');
QueryExecutionId := CkJsonObject__stringOf(jResp,'QueryExecutions[i].QueryExecutionId');
S3AclOption := CkJsonObject__stringOf(jResp,'QueryExecutions[i].ResultConfiguration.AclConfiguration.S3AclOption');
EncryptionOption := CkJsonObject__stringOf(jResp,'QueryExecutions[i].ResultConfiguration.EncryptionConfiguration.EncryptionOption');
KmsKey := CkJsonObject__stringOf(jResp,'QueryExecutions[i].ResultConfiguration.EncryptionConfiguration.KmsKey');
ExpectedBucketOwner := CkJsonObject__stringOf(jResp,'QueryExecutions[i].ResultConfiguration.ExpectedBucketOwner');
OutputLocation := CkJsonObject__stringOf(jResp,'QueryExecutions[i].ResultConfiguration.OutputLocation');
StatementType := CkJsonObject__stringOf(jResp,'QueryExecutions[i].StatementType');
DataManifestLocation := CkJsonObject__stringOf(jResp,'QueryExecutions[i].Statistics.DataManifestLocation');
DataScannedInBytes := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Statistics.DataScannedInBytes');
EngineExecutionTimeInMillis := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Statistics.EngineExecutionTimeInMillis');
QueryPlanningTimeInMillis := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Statistics.QueryPlanningTimeInMillis');
QueryQueueTimeInMillis := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Statistics.QueryQueueTimeInMillis');
ServiceProcessingTimeInMillis := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Statistics.ServiceProcessingTimeInMillis');
TotalExecutionTimeInMillis := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Statistics.TotalExecutionTimeInMillis');
ErrorCategory := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Status.AthenaError.ErrorCategory');
ErrorMessage := CkJsonObject__stringOf(jResp,'QueryExecutions[i].Status.AthenaError.ErrorMessage');
ErrorType := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Status.AthenaError.ErrorType');
Retryable := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Status.AthenaError.Retryable');
CompletionDateTime := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Status.CompletionDateTime');
State := CkJsonObject__stringOf(jResp,'QueryExecutions[i].Status.State');
StateChangeReason := CkJsonObject__stringOf(jResp,'QueryExecutions[i].Status.StateChangeReason');
SubmissionDateTime := CkJsonObject_IntOf(jResp,'QueryExecutions[i].Status.SubmissionDateTime');
WorkGroup := CkJsonObject__stringOf(jResp,'QueryExecutions[i].WorkGroup');
i := i + 1;
end;
i := 0;
count_i := CkJsonObject_SizeOfArray(jResp,'UnprocessedQueryExecutionIds');
while i < count_i do
begin
CkJsonObject_putI(jResp,i);
ErrorCode := CkJsonObject__stringOf(jResp,'UnprocessedQueryExecutionIds[i].ErrorCode');
ErrorMessage := CkJsonObject__stringOf(jResp,'UnprocessedQueryExecutionIds[i].ErrorMessage');
QueryExecutionId := CkJsonObject__stringOf(jResp,'UnprocessedQueryExecutionIds[i].QueryExecutionId');
i := i + 1;
end;
// A sample JSON response body parsed by the above code:
// {
// "QueryExecutions": [
// {
// "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"
// }
// ],
// "UnprocessedQueryExecutionIds": [
// {
// "ErrorCode": "string",
// "ErrorMessage": "string",
// "QueryExecutionId": "string"
// }
// ]
// }
CkRest_Dispose(rest);
CkAuthAws_Dispose(authAws);
CkJsonObject_Dispose(json);
CkStringBuilder_Dispose(sbRequestBody);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);
