Chilkat Online Tools

QueryAssistant delphiAx Example

Amazon Wisdom

var
rest: TChilkatRest;
success: Integer;
authAws: TChilkatAuthAws;
json: TChilkatJsonObject;
sbRequestBody: TChilkatStringBuilder;
sbResponseBody: TChilkatStringBuilder;
respStatusCode: Integer;
jResp: TChilkatJsonObject;
ContentArn: WideString;
ContentId: WideString;
KnowledgeBaseArn: WideString;
KnowledgeBaseId: WideString;
Text: WideString;
TitleText: WideString;
relevanceScore: Integer;
resultId: WideString;
j: Integer;
count_j: Integer;
beginOffsetInclusive: Integer;
endOffsetExclusive: Integer;
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 := 'wisdom';
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
rest.SetAuthAws(authAws.ControlInterface);

// URL: https://wisdom.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := rest.Connect('wisdom.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.UpdateString('queryText','string');

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

// {
//   "maxResults": number,
//   "nextToken": "string",
//   "queryText": "string"
// }

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

sbRequestBody := TChilkatStringBuilder.Create(Self);
json.EmitSb(sbRequestBody.ControlInterface);
sbResponseBody := TChilkatStringBuilder.Create(Self);
success := rest.FullRequestSb('POST','/assistants/{assistantId}/query',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('results');
while i < count_i do
  begin
    jResp.I := i;
    ContentArn := jResp.StringOf('results[i].document.contentReference.contentArn');
    ContentId := jResp.StringOf('results[i].document.contentReference.contentId');
    KnowledgeBaseArn := jResp.StringOf('results[i].document.contentReference.knowledgeBaseArn');
    KnowledgeBaseId := jResp.StringOf('results[i].document.contentReference.knowledgeBaseId');
    Text := jResp.StringOf('results[i].document.excerpt.text');
    TitleText := jResp.StringOf('results[i].document.title.text');
    relevanceScore := jResp.IntOf('results[i].relevanceScore');
    resultId := jResp.StringOf('results[i].resultId');
    j := 0;
    count_j := jResp.SizeOfArray('results[i].document.excerpt.highlights');
    while j < count_j do
      begin
        jResp.J := j;
        beginOffsetInclusive := jResp.IntOf('results[i].document.excerpt.highlights[j].beginOffsetInclusive');
        endOffsetExclusive := jResp.IntOf('results[i].document.excerpt.highlights[j].endOffsetExclusive');
        j := j + 1;
      end;

    j := 0;
    count_j := jResp.SizeOfArray('results[i].document.title.highlights');
    while j < count_j do
      begin
        jResp.J := j;
        beginOffsetInclusive := jResp.IntOf('results[i].document.title.highlights[j].beginOffsetInclusive');
        endOffsetExclusive := jResp.IntOf('results[i].document.title.highlights[j].endOffsetExclusive');
        j := j + 1;
      end;

    i := i + 1;
  end;

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

// {
//   "nextToken": "string",
//   "results": [
//     {
//       "document": {
//         "contentReference": {
//           "contentArn": "string",
//           "contentId": "string",
//           "knowledgeBaseArn": "string",
//           "knowledgeBaseId": "string"
//         },
//         "excerpt": {
//           "highlights": [
//             {
//               "beginOffsetInclusive": number,
//               "endOffsetExclusive": number
//             }
//           ],
//           "text": "string"
//         },
//         "title": {
//           "highlights": [
//             {
//               "beginOffsetInclusive": number,
//               "endOffsetExclusive": number
//             }
//           ],
//           "text": "string"
//         }
//       },
//       "relevanceScore": number,
//       "resultId": "string"
//     }
//   ]
// }