Chilkat Online Tools

ListStatements delphiAx Example

Amazon Redshift Data API

var
rest: TChilkatRest;
success: Integer;
authAws: TChilkatAuthAws;
json: TChilkatJsonObject;
sbRequestBody: TChilkatStringBuilder;
sbResponseBody: TChilkatStringBuilder;
respStatusCode: Integer;
jResp: TChilkatJsonObject;
CreatedAt: Integer;
Id: WideString;
IsBatchStatement: Integer;
QueryString: WideString;
SecretArn: WideString;
StatementName: WideString;
Status: WideString;
UpdatedAt: Integer;
j: Integer;
count_j: Integer;
name: WideString;
value: WideString;
strVal: WideString;
NextToken: WideString;
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 := 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 := 'redshift-data';
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
rest.SetAuthAws(authAws.ControlInterface);

// URL: https://redshift-data.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := rest.Connect('redshift-data.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.UpdateInt('MaxResults',123);
json.UpdateString('NextToken','string');
json.UpdateInt('RoleLevel',123);
json.UpdateString('StatementName','string');
json.UpdateString('Status','string');

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

// {
//   "MaxResults": number,
//   "NextToken": "string",
//   "RoleLevel": boolean,
//   "StatementName": "string",
//   "Status": "string"
// }

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

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

NextToken := jResp.StringOf('NextToken');
i := 0;
count_i := jResp.SizeOfArray('Statements');
while i < count_i do
  begin
    jResp.I := i;
    CreatedAt := jResp.IntOf('Statements[i].CreatedAt');
    Id := jResp.StringOf('Statements[i].Id');
    IsBatchStatement := jResp.IntOf('Statements[i].IsBatchStatement');
    QueryString := jResp.StringOf('Statements[i].QueryString');
    SecretArn := jResp.StringOf('Statements[i].SecretArn');
    StatementName := jResp.StringOf('Statements[i].StatementName');
    Status := jResp.StringOf('Statements[i].Status');
    UpdatedAt := jResp.IntOf('Statements[i].UpdatedAt');
    j := 0;
    count_j := jResp.SizeOfArray('Statements[i].QueryParameters');
    while j < count_j do
      begin
        jResp.J := j;
        name := jResp.StringOf('Statements[i].QueryParameters[j].name');
        value := jResp.StringOf('Statements[i].QueryParameters[j].value');
        j := j + 1;
      end;

    j := 0;
    count_j := jResp.SizeOfArray('Statements[i].QueryStrings');
    while j < count_j do
      begin
        jResp.J := j;
        strVal := jResp.StringOf('Statements[i].QueryStrings[j]');
        j := j + 1;
      end;

    i := i + 1;
  end;

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

// {
//   "NextToken": "string",
//   "Statements": [
//     {
//       "CreatedAt": number,
//       "Id": "string",
//       "IsBatchStatement": boolean,
//       "QueryParameters": [
//         {
//           "name": "string",
//           "value": "string"
//         }
//       ],
//       "QueryString": "string",
//       "QueryStrings": [
//         "string"
//       ],
//       "SecretArn": "string",
//       "StatementName": "string",
//       "Status": "string",
//       "UpdatedAt": number
//     }
//   ]
// }