Chilkat Online Tools

DescribeTable Xojo Example

Amazon Redshift Data API

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

Dim rest As New Chilkat.Rest
Dim success As Boolean

Dim authAws As 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
success = 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) Then
    System.DebugLog("ConnectFailReason: " + Str(rest.ConnectFailReason))
    System.DebugLog(rest.LastErrorText)
    Return
End If

// 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

Dim json As New Chilkat.JsonObject
success = json.UpdateString("ClusterIdentifier","string")
success = json.UpdateString("ConnectedDatabase","string")
success = json.UpdateString("Database","string")
success = json.UpdateString("DbUser","string")
success = json.UpdateInt("MaxResults",123)
success = json.UpdateString("NextToken","string")
success = json.UpdateString("Schema","string")
success = json.UpdateString("SecretArn","string")
success = 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"
// }

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

Dim sbRequestBody As New Chilkat.StringBuilder
success = json.EmitSb(sbRequestBody)
Dim sbResponseBody As New Chilkat.StringBuilder
success = rest.FullRequestSb("POST","/",sbRequestBody,sbResponseBody)
If (success <> True) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

Dim respStatusCode As Int32
respStatusCode = rest.ResponseStatusCode
System.DebugLog("response status code = " + Str(respStatusCode))
If (respStatusCode <> 200) Then
    System.DebugLog("Response Header:")
    System.DebugLog(rest.ResponseHeader)
    System.DebugLog("Response Body:")
    System.DebugLog(sbResponseBody.GetAsString())
    Return
End If

Dim jResp As New Chilkat.JsonObject
success = 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

Dim columnDefault As String
Dim isCaseSensitive As Int32
Dim isCurrency As Int32
Dim isSigned As Int32
Dim label As String
Dim length As Int32
Dim name As String
Dim nullable As Int32
Dim precision As Int32
Dim scale As Int32
Dim schemaName As String
Dim tableName As String
Dim typeName As String

Dim NextToken As String
NextToken = jResp.StringOf("NextToken")
Dim TableName As String
TableName = jResp.StringOf("TableName")
Dim i As Int32
i = 0
Dim count_i As Int32
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
Wend

// 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"
// }