Merge pull request aws-samples#85 from zachjonesnoel/master

Added PartiQL with Pagination sample NodeJS

Author: NoSQLKnowHow

DynamoDB-SDK-Examples/node.js/WorkingWithPartiQL/paginated-all-data.js

@@ -0,0 +1,38 @@
+const REGION = "us-west-2";
+// I am using the DynamoDB low level because the DocClient does not support executeStatement used with PartiQL
+const { DynamoDB } = require("@aws-sdk/client-dynamodb");
+const { unmarshall } = require("@aws-sdk/util-dynamodb");
+
+// Create low level client
+const dbclient = new DynamoDB({ region: REGION });
+
+let isDone = false
+// In PartiQL, we can execute statement with execute-statement which performs one action similar to Scan operation and returns NextToken which could be used to retrieve the next page/set of records.
+let params = {
+    Statement: `SELECT * from "cars-demo"`,
+    NextToken: null
+}
+
+while (!isDone) {
+    try {
+        let response = await dbclient.executeStatement(params);
+        /*  Returns response as Items and NextToken if the statement execution has more items.
+            {
+                "Items":[],
+                "NextToken":""
+            }
+         */
+        //Iterate through the Items array returned in the data variable and then unmarshall the DynamoDB JSON format to "regular" json format.
+        data.Items.forEach(function (item) {
+            console.log(JSON.stringify(unmarshall(item), null, 2));
+        });
+        if (data.NextToken != undefined) {
+            params.NextToken = data.NextToken
+        } else {
+            isDone = true;
+        }
+    } catch (error) {
+        console.error(JSON.stringify(error, null, 2));
+    }
+}
+