DescribeStatement delphiDll Example
var
rest: HCkRest;
success: Boolean;
authAws: HCkAuthAws;
json: HCkJsonObject;
sbRequestBody: HCkStringBuilder;
sbResponseBody: HCkStringBuilder;
respStatusCode: Integer;
jResp: HCkJsonObject;
name: PWideChar;
value: PWideChar;
ClusterIdentifier: PWideChar;
CreatedAt: Integer;
Database: PWideChar;
DbUser: PWideChar;
Duration: Integer;
Error: PWideChar;
HasResultSet: Integer;
Id: PWideChar;
QueryString: PWideChar;
RedshiftPid: Integer;
RedshiftQueryId: Integer;
ResultRows: Integer;
ResultSize: Integer;
SecretArn: PWideChar;
Status: PWideChar;
UpdatedAt: Integer;
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,'redshift-data');
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRest_SetAuthAws(rest,authAws);
// URL: https://redshift-data.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := CkRest_Connect(rest,'redshift-data.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,'Id','string');
// The JSON request body created by the above code:
// {
// "Id": "string"
// }
CkRest_AddHeader(rest,'Content-Type','application/x-amz-json-1.1');
CkRest_AddHeader(rest,'X-Amz-Target','RedshiftData.DescribeStatement');
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
ClusterIdentifier := CkJsonObject__stringOf(jResp,'ClusterIdentifier');
CreatedAt := CkJsonObject_IntOf(jResp,'CreatedAt');
Database := CkJsonObject__stringOf(jResp,'Database');
DbUser := CkJsonObject__stringOf(jResp,'DbUser');
Duration := CkJsonObject_IntOf(jResp,'Duration');
Error := CkJsonObject__stringOf(jResp,'Error');
HasResultSet := CkJsonObject_IntOf(jResp,'HasResultSet');
Id := CkJsonObject__stringOf(jResp,'Id');
QueryString := CkJsonObject__stringOf(jResp,'QueryString');
RedshiftPid := CkJsonObject_IntOf(jResp,'RedshiftPid');
RedshiftQueryId := CkJsonObject_IntOf(jResp,'RedshiftQueryId');
ResultRows := CkJsonObject_IntOf(jResp,'ResultRows');
ResultSize := CkJsonObject_IntOf(jResp,'ResultSize');
SecretArn := CkJsonObject__stringOf(jResp,'SecretArn');
Status := CkJsonObject__stringOf(jResp,'Status');
UpdatedAt := CkJsonObject_IntOf(jResp,'UpdatedAt');
i := 0;
count_i := CkJsonObject_SizeOfArray(jResp,'QueryParameters');
while i < count_i do
begin
CkJsonObject_putI(jResp,i);
name := CkJsonObject__stringOf(jResp,'QueryParameters[i].name');
value := CkJsonObject__stringOf(jResp,'QueryParameters[i].value');
i := i + 1;
end;
i := 0;
count_i := CkJsonObject_SizeOfArray(jResp,'SubStatements');
while i < count_i do
begin
CkJsonObject_putI(jResp,i);
CreatedAt := CkJsonObject_IntOf(jResp,'SubStatements[i].CreatedAt');
Duration := CkJsonObject_IntOf(jResp,'SubStatements[i].Duration');
Error := CkJsonObject__stringOf(jResp,'SubStatements[i].Error');
HasResultSet := CkJsonObject_IntOf(jResp,'SubStatements[i].HasResultSet');
Id := CkJsonObject__stringOf(jResp,'SubStatements[i].Id');
QueryString := CkJsonObject__stringOf(jResp,'SubStatements[i].QueryString');
RedshiftQueryId := CkJsonObject_IntOf(jResp,'SubStatements[i].RedshiftQueryId');
ResultRows := CkJsonObject_IntOf(jResp,'SubStatements[i].ResultRows');
ResultSize := CkJsonObject_IntOf(jResp,'SubStatements[i].ResultSize');
Status := CkJsonObject__stringOf(jResp,'SubStatements[i].Status');
UpdatedAt := CkJsonObject_IntOf(jResp,'SubStatements[i].UpdatedAt');
i := i + 1;
end;
// A sample JSON response body parsed by the above code:
// {
// "ClusterIdentifier": "string",
// "CreatedAt": number,
// "Database": "string",
// "DbUser": "string",
// "Duration": number,
// "Error": "string",
// "HasResultSet": boolean,
// "Id": "string",
// "QueryParameters": [
// {
// "name": "string",
// "value": "string"
// }
// ],
// "QueryString": "string",
// "RedshiftPid": number,
// "RedshiftQueryId": number,
// "ResultRows": number,
// "ResultSize": number,
// "SecretArn": "string",
// "Status": "string",
// "SubStatements": [
// {
// "CreatedAt": number,
// "Duration": number,
// "Error": "string",
// "HasResultSet": boolean,
// "Id": "string",
// "QueryString": "string",
// "RedshiftQueryId": number,
// "ResultRows": number,
// "ResultSize": number,
// "Status": "string",
// "UpdatedAt": number
// }
// ],
// "UpdatedAt": number
// }
CkRest_Dispose(rest);
CkAuthAws_Dispose(authAws);
CkJsonObject_Dispose(json);
CkStringBuilder_Dispose(sbRequestBody);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);