Classic ASP
DynamoDB - Query

The Query operation finds items based on primary key values. You can query any table or secondary index that has a composite primary key (a partition key and a sort key).
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Classic ASP
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<body>
<%
success = 0

set rest = Server.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.Query" \
'    -d '{
'      "TableName": "Reply",
'      "IndexName": "PostedBy-Index",
'      "Limit": 3,
'      "ConsistentRead": true,
'      "ProjectionExpression": "Id, PostedBy, ReplyDateTime",
'      "KeyConditionExpression": "Id = :v1 AND PostedBy BETWEEN :v2a AND :v2b",
'      "ExpressionAttributeValues": {
'          ":v1": {"S": "Amazon DynamoDB#DynamoDB Thread 1"},
'          ":v2a": {"S": "User A"},
'          ":v2b": {"S": "User C"}
'      },
'      "ReturnConsumedCapacity": "TOTAL"
'  }'

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

set authAws = Server.CreateObject("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/
bTls = 1
port = 443
bAutoReconnect = 1
success = rest.Connect("dynamodb.us-west-2.amazonaws.com",port,bTls,bAutoReconnect)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( "ConnectFailReason: " & rest.ConnectFailReason) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
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.

'  {
'    "TableName": "Reply",
'    "IndexName": "PostedBy-Index",
'    "Limit": 3,
'    "ConsistentRead": true,
'    "ProjectionExpression": "Id, PostedBy, ReplyDateTime",
'    "KeyConditionExpression": "Id = :v1 AND PostedBy BETWEEN :v2a AND :v2b",
'    "ExpressionAttributeValues": {
'      ":v1": {
'        "S": "Amazon DynamoDB#DynamoDB Thread 1"
'      },
'      ":v2a": {
'        "S": "User A"
'      },
'      ":v2b": {
'        "S": "User C"
'      }
'    },
'    "ReturnConsumedCapacity": "TOTAL"
'  }

set json = Server.CreateObject("Chilkat.JsonObject")
success = json.UpdateString("TableName","Reply")
success = json.UpdateString("IndexName","PostedBy-Index")
success = json.UpdateInt("Limit",3)
success = json.UpdateBool("ConsistentRead",1)
success = json.UpdateString("ProjectionExpression","Id, PostedBy, ReplyDateTime")
success = json.UpdateString("KeyConditionExpression","Id = :v1 AND PostedBy BETWEEN :v2a AND :v2b")
success = json.UpdateString("ExpressionAttributeValues.:v1.S","Amazon DynamoDB#DynamoDB Thread 1")
success = json.UpdateString("ExpressionAttributeValues.:v2a.S","User A")
success = json.UpdateString("ExpressionAttributeValues.:v2b.S","User C")
success = json.UpdateString("ReturnConsumedCapacity","TOTAL")

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

set sbRequestBody = Server.CreateObject("Chilkat.StringBuilder")
success = json.EmitSb(sbRequestBody)
set sbResponseBody = Server.CreateObject("Chilkat.StringBuilder")
success = rest.FullRequestSb("POST","/",sbRequestBody,sbResponseBody)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
End If

respStatusCode = rest.ResponseStatusCode
Response.Write "<pre>" & Server.HTMLEncode( "response status code = " & respStatusCode) & "</pre>"
If (respStatusCode >= 400) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Response Status Code = " & respStatusCode) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Response Header:") & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( rest.ResponseHeader) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "Response Body:") & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( sbResponseBody.GetAsString()) & "</pre>"
    Response.End
End If

set jsonResponse = Server.CreateObject("Chilkat.JsonObject")
success = jsonResponse.LoadSb(sbResponseBody)

jsonResponse.EmitCompact = 0
Response.Write "<pre>" & Server.HTMLEncode( jsonResponse.Emit()) & "</pre>"

'  Sample JSON response:
'  (Sample code for parsing the JSON response is shown below)

'  {
'    "ConsumedCapacity": {
'      "CapacityUnits": 1,
'      "TableName": "Reply"
'    },
'    "Count": 2,
'    "Items": [
'      {
'        "ReplyDateTime": {
'          "S": "2015-02-18T20:27:36.165Z"
'        },
'        "PostedBy": {
'          "S": "User A"
'        },
'        "Id": {
'          "S": "Amazon DynamoDB#DynamoDB Thread 1"
'        }
'      },
'      {
'        "ReplyDateTime": {
'          "S": "2015-02-25T20:27:36.165Z"
'        },
'        "PostedBy": {
'          "S": "User B"
'        },
'        "Id": {
'          "S": "Amazon DynamoDB#DynamoDB Thread 1"
'        }
'      }
'    ],
'    "ScannedCount": 2
'  }

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

ConsumedCapacityCapacityUnits = jsonResponse.IntOf("ConsumedCapacity.CapacityUnits")
ConsumedCapacityTableName = jsonResponse.StringOf("ConsumedCapacity.TableName")
Count = jsonResponse.IntOf("Count")
ScannedCount = jsonResponse.IntOf("ScannedCount")
i = 0
count_i = jsonResponse.SizeOfArray("Items")
Do While i < count_i
    jsonResponse.I = i
    ReplyDateTimeS = jsonResponse.StringOf("Items[i].ReplyDateTime.S")
    PostedByS = jsonResponse.StringOf("Items[i].PostedBy.S")
    IdS = jsonResponse.StringOf("Items[i].Id.S")
    i = i + 1
Loop

%>
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