Chilkat Online Tools

StartSentimentDetectionJob Objective-C Example

Amazon Comprehend

#import <CkoRest.h>
#import <CkoAuthAws.h>
#import <CkoJsonObject.h>
#import <CkoStringBuilder.h>
#import <NSString.h>

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

CkoRest *rest = [[CkoRest alloc] init];
BOOL success;

CkoAuthAws *authAws = [[CkoAuthAws alloc] init];
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 = @"comprehend";
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
[rest SetAuthAws: authAws];

// URL: https://comprehend.us-west-2.amazonaws.com/
// Use the same region as specified above.
success = [rest Connect: @"comprehend.us-west-2.amazonaws.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: YES];
if (success != YES) {
    NSLog(@"%@%d",@"ConnectFailReason: ",[rest.ConnectFailReason intValue]);
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// 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

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"ClientRequestToken" value: @"string"];
[json UpdateString: @"DataAccessRoleArn" value: @"string"];
[json UpdateString: @"InputDataConfig.DocumentReaderConfig.DocumentReadAction" value: @"string"];
[json UpdateString: @"InputDataConfig.DocumentReaderConfig.DocumentReadMode" value: @"string"];
[json UpdateString: @"InputDataConfig.DocumentReaderConfig.FeatureTypes[0]" value: @"string"];
[json UpdateString: @"InputDataConfig.InputFormat" value: @"string"];
[json UpdateString: @"InputDataConfig.S3Uri" value: @"string"];
[json UpdateString: @"JobName" value: @"string"];
[json UpdateString: @"LanguageCode" value: @"string"];
[json UpdateString: @"OutputDataConfig.KmsKeyId" value: @"string"];
[json UpdateString: @"OutputDataConfig.S3Uri" value: @"string"];
[json UpdateString: @"Tags[0].Key" value: @"string"];
[json UpdateString: @"Tags[0].Value" value: @"string"];
[json UpdateString: @"VolumeKmsKeyId" value: @"string"];
[json UpdateString: @"VpcConfig.SecurityGroupIds[0]" value: @"string"];
[json UpdateString: @"VpcConfig.Subnets[0]" value: @"string"];

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

// {
//   "ClientRequestToken": "string",
//   "DataAccessRoleArn": "string",
//   "InputDataConfig": {
//     "DocumentReaderConfig": {
//       "DocumentReadAction": "string",
//       "DocumentReadMode": "string",
//       "FeatureTypes": [
//         "string"
//       ]
//     },
//     "InputFormat": "string",
//     "S3Uri": "string"
//   },
//   "JobName": "string",
//   "LanguageCode": "string",
//   "OutputDataConfig": {
//     "KmsKeyId": "string",
//     "S3Uri": "string"
//   },
//   "Tags": [
//     {
//       "Key": "string",
//       "Value": "string"
//     }
//   ],
//   "VolumeKmsKeyId": "string",
//   "VpcConfig": {
//     "SecurityGroupIds": [
//       "string"
//     ],
//     "Subnets": [
//       "string"
//     ]
//   }
// }

[rest AddHeader: @"Content-Type" value: @"application/x-amz-json-1.1"];
[rest AddHeader: @"X-Amz-Target" value: @"Comprehend_20171127.StartSentimentDetectionJob"];

CkoStringBuilder *sbRequestBody = [[CkoStringBuilder alloc] init];
[json EmitSb: sbRequestBody];
CkoStringBuilder *sbResponseBody = [[CkoStringBuilder alloc] init];
success = [rest FullRequestSb: @"POST" uriPath: @"/" requestBody: sbRequestBody responseBody: sbResponseBody];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

int respStatusCode = [rest.ResponseStatusCode intValue];
NSLog(@"%@%d",@"response status code = ",respStatusCode);
if (respStatusCode != 200) {
    NSLog(@"%@",@"Response Header:");
    NSLog(@"%@",rest.ResponseHeader);
    NSLog(@"%@",@"Response Body:");
    NSLog(@"%@",[sbResponseBody GetAsString]);
    return;
}

CkoJsonObject *jResp = [[CkoJsonObject alloc] init];
[jResp LoadSb: 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

NSString *JobArn = [jResp StringOf: @"JobArn"];
NSString *JobId = [jResp StringOf: @"JobId"];
NSString *JobStatus = [jResp StringOf: @"JobStatus"];

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

// {
//   "JobArn": "string",
//   "JobId": "string",
//   "JobStatus": "string"
// }