(Visual FoxPro) DynamoDB - PutItem

Creates a new item, or replaces an old item with a new item. If an item that has the same primary key as the new item already exists in the specified table, the new item completely replaces the existing item.

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loRest
LOCAL lnSuccess
LOCAL loAuthAws
LOCAL lnBTls
LOCAL lnPort
LOCAL lnBAutoReconnect
LOCAL loJson
LOCAL loSbRequestBody
LOCAL loSbResponseBody
LOCAL lnRespStatusCode
LOCAL loJsonResponse

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Rest')
loRest = CreateObject('Chilkat.Rest')

* 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.PutItem" \
*   -d '{
*     "TableName": "Thread",
*     "Item": {
*         "LastPostDateTime": {
*             "S": "201303190422"
*         },
*         "Tags": {
*             "SS": ["Update","Multiple Items","HelpMe"]
*         },
*         "ForumName": {
*             "S": "Amazon DynamoDB"
*         },
*         "Message": {
*             "S": "I want to update multiple items in a single call. What is the best way to do that?"
*         },
*         "Subject": {
*             "S": "How do I update multiple items?"
*         },
*         "LastPostedBy": {
*             "S": "fred@example.com"
*         }
*     },
*     "ConditionExpression": "ForumName <> :f and Subject <> :s",
*     "ExpressionAttributeValues": {
*         ":f": {"S": "Amazon DynamoDB"},
*         ":s": {"S": "How do I update multiple items?"}
*     }
* }'

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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.AuthAws')
loAuthAws = CreateObject('Chilkat.AuthAws')
loAuthAws.AccessKey = "AWS_ACCESS_KEY"
loAuthAws.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.)
loAuthAws.Region = "us-west-2"
loAuthAws.ServiceName = "dynamodb"
* SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
loRest.SetAuthAws(loAuthAws)

* URL: https://dynamodb.us-west-2.amazonaws.com/
lnBTls = 1
lnPort = 443
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("dynamodb.us-west-2.amazonaws.com",lnPort,lnBTls,lnBAutoReconnect)
IF (lnSuccess <> 1) THEN
    ? "ConnectFailReason: " + STR(loRest.ConnectFailReason)
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loAuthAws
    CANCEL
ENDIF

* 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.

* {
*   "TableName": "Thread",
*   "Item": {
*     "LastPostDateTime": {
*       "S": "201303190422"
*     },
*     "Tags": {
*       "SS": [
*         "Update",
*         "Multiple Items",
*         "HelpMe"
*       ]
*     },
*     "ForumName": {
*       "S": "Amazon DynamoDB"
*     },
*     "Message": {
*       "S": "I want to update multiple items in a single call. What is the best way to do that?"
*     },
*     "Subject": {
*       "S": "How do I update multiple items?"
*     },
*     "LastPostedBy": {
*       "S": "fred@example.com"
*     }
*   },
*   "ConditionExpression": "ForumName <> :f and Subject <> :s",
*   "ExpressionAttributeValues": {
*     ":f": {
*       "S": "Amazon DynamoDB"
*     },
*     ":s": {
*       "S": "How do I update multiple items?"
*     }
*   }
* }

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJson = CreateObject('Chilkat.JsonObject')
loJson.UpdateString("TableName","Thread")
loJson.UpdateString("Item.LastPostDateTime.S","201303190422")
loJson.UpdateString("Item.Tags.SS[0]","Update")
loJson.UpdateString("Item.Tags.SS[1]","Multiple Items")
loJson.UpdateString("Item.Tags.SS[2]","HelpMe")
loJson.UpdateString("Item.ForumName.S","Amazon DynamoDB")
loJson.UpdateString("Item.Message.S","I want to update multiple items in a single call. What is the best way to do that?")
loJson.UpdateString("Item.Subject.S","How do I update multiple items?")
loJson.UpdateString("Item.LastPostedBy.S","fred@example.com")
loJson.UpdateString("ConditionExpression","ForumName <> :f and Subject <> :s")
loJson.UpdateString("ExpressionAttributeValues.:f.S","Amazon DynamoDB")
loJson.UpdateString("ExpressionAttributeValues.:s.S","How do I update multiple items?")

loRest.AddHeader("Content-Type","application/x-amz-json-1.0")
loRest.AddHeader("X-Amz-Target","DynamoDB_20120810.PutItem")
loRest.AddHeader("Accept-Encoding","identity")

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbRequestBody = CreateObject('Chilkat.StringBuilder')
loJson.EmitSb(loSbRequestBody)
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbResponseBody = CreateObject('Chilkat.StringBuilder')
lnSuccess = loRest.FullRequestSb("POST","/",loSbRequestBody,loSbResponseBody)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loAuthAws
    RELEASE loJson
    RELEASE loSbRequestBody
    RELEASE loSbResponseBody
    CANCEL
ENDIF

lnRespStatusCode = loRest.ResponseStatusCode
? "response status code = " + STR(lnRespStatusCode)
IF (lnRespStatusCode >= 400) THEN
    ? "Response Status Code = " + STR(lnRespStatusCode)
    ? "Response Header:"
    ? loRest.ResponseHeader
    ? "Response Body:"
    ? loSbResponseBody.GetAsString()
    RELEASE loRest
    RELEASE loAuthAws
    RELEASE loJson
    RELEASE loSbRequestBody
    RELEASE loSbResponseBody
    CANCEL
ENDIF

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJsonResponse = CreateObject('Chilkat.JsonObject')
loJsonResponse.LoadSb(loSbResponseBody)

loJsonResponse.EmitCompact = 0
? loJsonResponse.Emit()

RELEASE loRest
RELEASE loAuthAws
RELEASE loJson
RELEASE loSbRequestBody
RELEASE loSbResponseBody
RELEASE loJsonResponse