Chilkat Examples

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Xojo Plugin Web API Examples

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ABN AMRO
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(Xojo Plugin) DynamoDB - CreateTable

The CreateTable operation adds a new table to your account. In an AWS account, table names must be unique within each Region. That is, you can have two tables with same name if you create the tables in different Regions.

CreateTable is an asynchronous operation. Upon receiving a CreateTable request, DynamoDB immediately returns a response with a TableStatus of CREATING. After the table is created, DynamoDB sets the TableStatus to ACTIVE. You can perform read and write operations only on an ACTIVE table.

You can use the DescribeTable action to check the table status.

For more information, see https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_CreateTable.html

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM

Dim rest As New Chilkat.Rest
Dim success As Boolean

// Implements the following CURL command:

// curl -X POST https://dynamodb.us-west-2.amazonaws.com/ \
//   -H "Accept-Encoding: identity" \
//   -H "Content-Type: application/x-amz-json-1.0" \
//   -H "Authorization: AWS4-HMAC-SHA256 Credential=<Credential>, SignedHeaders=<Headers>, Signature=<Signature>" \
//   -H "X-Amz-Date: <Date>" \
//   -H "X-Amz-Target: DynamoDB_20120810.CreateTable" \
//   -d '{
//     "AttributeDefinitions": [
//         {
//             "AttributeName": "ForumName",
//             "AttributeType": "S"
//         },
//         {
//             "AttributeName": "Subject",
//             "AttributeType": "S"
//         },
//         {
//             "AttributeName": "LastPostDateTime",
//             "AttributeType": "S"
//         }
//     ],
//     "TableName": "Thread",
//     "KeySchema": [
//         {
//             "AttributeName": "ForumName",
//             "KeyType": "HASH"
//         },
//         {
//             "AttributeName": "Subject",
//             "KeyType": "RANGE"
//         }
//     ],
//     "LocalSecondaryIndexes": [
//         {
//             "IndexName": "LastPostIndex",
//             "KeySchema": [
//                 {
//                     "AttributeName": "ForumName",
//                     "KeyType": "HASH"
//                 },
//                 {
//                     "AttributeName": "LastPostDateTime",
//                     "KeyType": "RANGE"
//                 }
//             ],
//             "Projection": {
//                 "ProjectionType": "KEYS_ONLY"
//             }
//         }
//     ],
//     "ProvisionedThroughput": {
//         "ReadCapacityUnits": 5,
//         "WriteCapacityUnits": 5
//     },
//     "Tags": [ 
//       { 
//          "Key": "Owner",
//          "Value": "BlueTeam"
//       }
//    ]
// }'

// Use the following online tool to generate REST code from a CURL command
// Convert a cURL Command to REST Source Code

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 = "dynamodb"
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
success = rest.SetAuthAws(authAws)

// URL: https://dynamodb.us-west-2.amazonaws.com/
Dim bTls As Boolean
bTls = True
Dim port As Int32
port = 443
Dim bAutoReconnect As Boolean
bAutoReconnect = True
// Don't forget to change the region domain (us-west-2.amazonaws.com) to your particular region.
success = rest.Connect("dynamodb.us-west-2.amazonaws.com",port,bTls,bAutoReconnect)
If (success <> True) Then
    System.DebugLog("ConnectFailReason: " + Str(rest.ConnectFailReason))
    System.DebugLog(rest.LastErrorText)
    Return
End If

// Note: The above code does not need to be repeatedly called for each REST request.
// The rest object can be setup once, and then many requests can be sent.  Chilkat will automatically
// reconnect within a FullRequest* method as needed.  It is only the very first connection that is explicitly
// made via the Connect method.

// Use this online tool to generate code from sample JSON:
// Generate Code to Create JSON

// The following JSON is sent in the request body.

// {
//   "AttributeDefinitions": [
//     {
//       "AttributeName": "ForumName",
//       "AttributeType": "S"
//     },
//     {
//       "AttributeName": "Subject",
//       "AttributeType": "S"
//     },
//     {
//       "AttributeName": "LastPostDateTime",
//       "AttributeType": "S"
//     }
//   ],
//   "TableName": "Thread",
//   "KeySchema": [
//     {
//       "AttributeName": "ForumName",
//       "KeyType": "HASH"
//     },
//     {
//       "AttributeName": "Subject",
//       "KeyType": "RANGE"
//     }
//   ],
//   "LocalSecondaryIndexes": [
//     {
//       "IndexName": "LastPostIndex",
//       "KeySchema": [
//         {
//           "AttributeName": "ForumName",
//           "KeyType": "HASH"
//         },
//         {
//           "AttributeName": "LastPostDateTime",
//           "KeyType": "RANGE"
//         }
//       ],
//       "Projection": {
//         "ProjectionType": "KEYS_ONLY"
//       }
//     }
//   ],
//   "ProvisionedThroughput": {
//     "ReadCapacityUnits": 5,
//     "WriteCapacityUnits": 5
//   },
//   "Tags": [
//     {
//       "Key": "Owner",
//       "Value": "BlueTeam"
//     }
//   ]
// }

Dim json As New Chilkat.JsonObject
Dim i As Int32
i = 0
json.I = i
success = json.UpdateString("AttributeDefinitions[i].AttributeName","ForumName")
success = json.UpdateString("AttributeDefinitions[i].AttributeType","S")
i = i + 1
json.I = i
success = json.UpdateString("AttributeDefinitions[i].AttributeName","Subject")
success = json.UpdateString("AttributeDefinitions[i].AttributeType","S")
i = i + 1
json.I = i
success = json.UpdateString("AttributeDefinitions[i].AttributeName","LastPostDateTime")
success = json.UpdateString("AttributeDefinitions[i].AttributeType","S")
success = json.UpdateString("TableName","Thread")
i = 0
json.I = i
success = json.UpdateString("KeySchema[i].AttributeName","ForumName")
success = json.UpdateString("KeySchema[i].KeyType","HASH")
i = i + 1
json.I = i
success = json.UpdateString("KeySchema[i].AttributeName","Subject")
success = json.UpdateString("KeySchema[i].KeyType","RANGE")

i = 0
json.I = i
Dim j As Int32
j = 0
json.J = j
success = json.UpdateString("LocalSecondaryIndexes[i].IndexName","LastPostIndex")
success = json.UpdateString("LocalSecondaryIndexes[i].KeySchema[j].AttributeName","ForumName")
success = json.UpdateString("LocalSecondaryIndexes[i].KeySchema[j].KeyType","HASH")
j = j + 1
json.J = j
success = json.UpdateString("LocalSecondaryIndexes[i].KeySchema[j].AttributeName","LastPostDateTime")
success = json.UpdateString("LocalSecondaryIndexes[i].KeySchema[j].KeyType","RANGE")
success = json.UpdateString("LocalSecondaryIndexes[i].Projection.ProjectionType","KEYS_ONLY")
success = json.UpdateInt("ProvisionedThroughput.ReadCapacityUnits",5)
success = json.UpdateInt("ProvisionedThroughput.WriteCapacityUnits",5)
success = json.UpdateString("Tags[0].Key","Owner")
success = json.UpdateString("Tags[0].Value","BlueTeam")

success = rest.AddHeader("Content-Type","application/x-amz-json-1.0")
success = rest.AddHeader("X-Amz-Target","DynamoDB_20120810.CreateTable")
success = rest.AddHeader("Accept-Encoding","identity")

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 >= 400) Then
    System.DebugLog("Response Status Code = " + Str(respStatusCode))
    System.DebugLog("Response Header:")
    System.DebugLog(rest.ResponseHeader)
    System.DebugLog("Response Body:")
    System.DebugLog(sbResponseBody.GetAsString())
    Return
End If

Dim jsonResponse As New Chilkat.JsonObject
success = jsonResponse.LoadSb(sbResponseBody)

jsonResponse.EmitCompact = False
System.DebugLog(jsonResponse.Emit())

// Sample Response:

//  {
//     "TableDescription": {
//         "TableArn": "arn:aws:dynamodb:us-west-2:123456789012:table/Thread",
//         "AttributeDefinitions": [
//             {
//                 "AttributeName": "ForumName",
//                 "AttributeType": "S"
//             },
//             {
//                 "AttributeName": "LastPostDateTime",
//                 "AttributeType": "S"
//             },
//             {
//                 "AttributeName": "Subject",
//                 "AttributeType": "S"
//             }
//         ],
//         "CreationDateTime": 1.36372808007E9,
//         "ItemCount": 0,
//         "KeySchema": [
//             {
//                 "AttributeName": "ForumName",
//                 "KeyType": "HASH"
//             },
//             {
//                 "AttributeName": "Subject",
//                 "KeyType": "RANGE"
//             }
//         ],
//         "LocalSecondaryIndexes": [
//             {
//                 "IndexArn": "arn:aws:dynamodb:us-west-2:123456789012:table/Thread/index/LastPostIndex",
//                 "IndexName": "LastPostIndex",
//                 "IndexSizeBytes": 0,
//                 "ItemCount": 0,
//                 "KeySchema": [
//                     {
//                         "AttributeName": "ForumName",
//                         "KeyType": "HASH"
//                     },
//                     {
//                         "AttributeName": "LastPostDateTime",
//                         "KeyType": "RANGE"
//                     }
//                 ],
//                 "Projection": {
//                     "ProjectionType": "KEYS_ONLY"
//                 }
//             }
//         ],
//         "ProvisionedThroughput": {
//             "NumberOfDecreasesToday": 0,
//             "ReadCapacityUnits": 5,
//             "WriteCapacityUnits": 5
//         },
//         "TableName": "Thread",
//         "TableSizeBytes": 0,
//         "TableStatus": "CREATING"
//     }
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

Dim AttributeName As String
Dim AttributeType As String
Dim KeyType As String
Dim IndexArn As String
Dim IndexName As String
Dim IndexSizeBytes As Int32
Dim ItemCount As Int32
Dim ProjectionProjectionType As String
Dim count_j As Int32

Dim TableDescriptionTableArn As String
TableDescriptionTableArn = jsonResponse.StringOf("TableDescription.TableArn")
Dim TableDescriptionCreationDateTime As String
TableDescriptionCreationDateTime = jsonResponse.StringOf("TableDescription.CreationDateTime")
Dim TableDescriptionItemCount As Int32
TableDescriptionItemCount = jsonResponse.IntOf("TableDescription.ItemCount")
Dim TableDescriptionProvisionedThroughputNumberOfDecreasesToday As Int32
TableDescriptionProvisionedThroughputNumberOfDecreasesToday = jsonResponse.IntOf("TableDescription.ProvisionedThroughput.NumberOfDecreasesToday")
Dim TableDescriptionProvisionedThroughputReadCapacityUnits As Int32
TableDescriptionProvisionedThroughputReadCapacityUnits = jsonResponse.IntOf("TableDescription.ProvisionedThroughput.ReadCapacityUnits")
Dim TableDescriptionProvisionedThroughputWriteCapacityUnits As Int32
TableDescriptionProvisionedThroughputWriteCapacityUnits = jsonResponse.IntOf("TableDescription.ProvisionedThroughput.WriteCapacityUnits")
Dim TableDescriptionTableName As String
TableDescriptionTableName = jsonResponse.StringOf("TableDescription.TableName")
Dim TableDescriptionTableSizeBytes As Int32
TableDescriptionTableSizeBytes = jsonResponse.IntOf("TableDescription.TableSizeBytes")
Dim TableDescriptionTableStatus As String
TableDescriptionTableStatus = jsonResponse.StringOf("TableDescription.TableStatus")
i = 0
Dim count_i As Int32
count_i = jsonResponse.SizeOfArray("TableDescription.AttributeDefinitions")
While i < count_i
    jsonResponse.I = i
    AttributeName = jsonResponse.StringOf("TableDescription.AttributeDefinitions[i].AttributeName")
    AttributeType = jsonResponse.StringOf("TableDescription.AttributeDefinitions[i].AttributeType")
    i = i + 1
Wend
i = 0
count_i = jsonResponse.SizeOfArray("TableDescription.KeySchema")
While i < count_i
    jsonResponse.I = i
    AttributeName = jsonResponse.StringOf("TableDescription.KeySchema[i].AttributeName")
    KeyType = jsonResponse.StringOf("TableDescription.KeySchema[i].KeyType")
    i = i + 1
Wend
i = 0
count_i = jsonResponse.SizeOfArray("TableDescription.LocalSecondaryIndexes")
While i < count_i
    jsonResponse.I = i
    IndexArn = jsonResponse.StringOf("TableDescription.LocalSecondaryIndexes[i].IndexArn")
    IndexName = jsonResponse.StringOf("TableDescription.LocalSecondaryIndexes[i].IndexName")
    IndexSizeBytes = jsonResponse.IntOf("TableDescription.LocalSecondaryIndexes[i].IndexSizeBytes")
    ItemCount = jsonResponse.IntOf("TableDescription.LocalSecondaryIndexes[i].ItemCount")
    ProjectionProjectionType = jsonResponse.StringOf("TableDescription.LocalSecondaryIndexes[i].Projection.ProjectionType")
    j = 0
    count_j = jsonResponse.SizeOfArray("TableDescription.LocalSecondaryIndexes[i].KeySchema")
    While j < count_j
        jsonResponse.J = j
        AttributeName = jsonResponse.StringOf("TableDescription.LocalSecondaryIndexes[i].KeySchema[j].AttributeName")
        KeyType = jsonResponse.StringOf("TableDescription.LocalSecondaryIndexes[i].KeySchema[j].KeyType")
        j = j + 1
    Wend
    i = i + 1
Wend

 

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