Chilkat Online Tools

ListTables VB.NET 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
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
    Debug.WriteLine("ConnectFailReason: " & rest.ConnectFailReason)
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
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
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("SchemaPattern","string")
json.UpdateString("SecretArn","string")
json.UpdateString("TablePattern","string")

' The JSON request body created by the above code:

' {
'   "ClusterIdentifier": "string",
'   "ConnectedDatabase": "string",
'   "Database": "string",
'   "DbUser": "string",
'   "MaxResults": number,
'   "NextToken": "string",
'   "SchemaPattern": "string",
'   "SecretArn": "string",
'   "TablePattern": "string"
' }

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

Dim sbRequestBody As New Chilkat.StringBuilder
json.EmitSb(sbRequestBody)
Dim sbResponseBody As New Chilkat.StringBuilder
success = rest.FullRequestSb("POST","/",sbRequestBody,sbResponseBody)
If (success <> True) Then
    Debug.WriteLine(rest.LastErrorText)
    Exit Sub
End If

Dim respStatusCode As Integer = rest.ResponseStatusCode
Debug.WriteLine("response status code = " & respStatusCode)
If (respStatusCode <> 200) Then
    Debug.WriteLine("Response Header:")
    Debug.WriteLine(rest.ResponseHeader)
    Debug.WriteLine("Response Body:")
    Debug.WriteLine(sbResponseBody.GetAsString())
    Exit Sub
End If


Dim jResp As 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



Dim name As String
Dim schema As String
Dim v_type As String

Dim NextToken As String = jResp.StringOf("NextToken")
Dim i As Integer = 0
Dim count_i As Integer = jResp.SizeOfArray("Tables")
While i < count_i
    jResp.I = i
    name = jResp.StringOf("Tables[i].name")
    schema = jResp.StringOf("Tables[i].schema")
    v_type = jResp.StringOf("Tables[i].type")
    i = i + 1
End While


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

' {
'   "NextToken": "string",
'   "Tables": [
'     {
'       "name": "string",
'       "schema": "string",
'       "type": "string"
'     }
'   ]
' }