Chilkat Online Tools

DescribeTable C# Example

Amazon Redshift Data API

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

Chilkat.Rest rest = new Chilkat.Rest();
bool success;

Chilkat.AuthAws authAws = new Chilkat.AuthAws();
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);

// 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,true,true);
if (success != true) {
    Debug.WriteLine("ConnectFailReason: " + Convert.ToString(rest.ConnectFailReason));
    Debug.WriteLine(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

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.UpdateString("ClusterIdentifier","string");
json.UpdateString("ConnectedDatabase","string");
json.UpdateString("Database","string");
json.UpdateString("DbUser","string");
json.UpdateInt("MaxResults",123);
json.UpdateString("NextToken","string");
json.UpdateString("Schema","string");
json.UpdateString("SecretArn","string");
json.UpdateString("Table","string");

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

// {
//   "ClusterIdentifier": "string",
//   "ConnectedDatabase": "string",
//   "Database": "string",
//   "DbUser": "string",
//   "MaxResults": number,
//   "NextToken": "string",
//   "Schema": "string",
//   "SecretArn": "string",
//   "Table": "string"
// }

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

Chilkat.StringBuilder sbRequestBody = new Chilkat.StringBuilder();
json.EmitSb(sbRequestBody);
Chilkat.StringBuilder sbResponseBody = new Chilkat.StringBuilder();
success = rest.FullRequestSb("POST","/",sbRequestBody,sbResponseBody);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

int respStatusCode = rest.ResponseStatusCode;
Debug.WriteLine("response status code = " + Convert.ToString(respStatusCode));
if (respStatusCode != 200) {
    Debug.WriteLine("Response Header:");
    Debug.WriteLine(rest.ResponseHeader);
    Debug.WriteLine("Response Body:");
    Debug.WriteLine(sbResponseBody.GetAsString());
    return;
}

Chilkat.JsonObject jResp = new Chilkat.JsonObject();
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

string columnDefault;
int isCaseSensitive;
int isCurrency;
int isSigned;
string label;
int length;
string name;
int nullable;
int precision;
int scale;
string schemaName;
string tableName;
string typeName;

string NextToken = jResp.StringOf("NextToken");
string TableName = jResp.StringOf("TableName");
int i = 0;
int count_i = jResp.SizeOfArray("ColumnList");
while (i < count_i) {
    jResp.I = i;
    columnDefault = jResp.StringOf("ColumnList[i].columnDefault");
    isCaseSensitive = jResp.IntOf("ColumnList[i].isCaseSensitive");
    isCurrency = jResp.IntOf("ColumnList[i].isCurrency");
    isSigned = jResp.IntOf("ColumnList[i].isSigned");
    label = jResp.StringOf("ColumnList[i].label");
    length = jResp.IntOf("ColumnList[i].length");
    name = jResp.StringOf("ColumnList[i].name");
    nullable = jResp.IntOf("ColumnList[i].nullable");
    precision = jResp.IntOf("ColumnList[i].precision");
    scale = jResp.IntOf("ColumnList[i].scale");
    schemaName = jResp.StringOf("ColumnList[i].schemaName");
    tableName = jResp.StringOf("ColumnList[i].tableName");
    typeName = jResp.StringOf("ColumnList[i].typeName");
    i = i + 1;
}

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

// {
//   "ColumnList": [
//     {
//       "columnDefault": "string",
//       "isCaseSensitive": boolean,
//       "isCurrency": boolean,
//       "isSigned": boolean,
//       "label": "string",
//       "length": number,
//       "name": "string",
//       "nullable": number,
//       "precision": number,
//       "scale": number,
//       "schemaName": "string",
//       "tableName": "string",
//       "typeName": "string"
//     }
//   ],
//   "NextToken": "string",
//   "TableName": "string"
// }