Add Tuple examples

Author: PiotrJunior

examples/DataStax/tuple/tuple-insert-select-simple.js

@@ -0,0 +1,48 @@
+"use strict";
+const cassandra = require("scylladb-javascript-driver");
+const { getClientArgs } = require("../util");
+
+const client = new cassandra.Client(getClientArgs());
+
+/**
+ * Creates a table with a Tuple type, inserts a row and selects a row.
+ */
+client
+    .connect()
+    .then(function () {
+        const query =
+            "CREATE KEYSPACE IF NOT EXISTS examples WITH replication =" +
+            "{'class': 'SimpleStrategy', 'replication_factor': '1' }";
+        return client.execute(query);
+    })
+    .then(function () {
+        const query =
+            "CREATE TABLE IF NOT EXISTS examples.tuple_forex " +
+            "(name text, time timeuuid, currencies frozen<tuple<text, text>>, PRIMARY KEY (name, time))";
+        return client.execute(query);
+    })
+    .then(function () {
+        console.log("Inserting");
+        // Create a new instance of a Tuple
+        const currencies = new cassandra.types.Tuple("USD", "EUR");
+        const query =
+            "INSERT INTO examples.tuple_forex (name, time, currencies)  VALUES (?, ?, ?)";
+        const params = ["market1", cassandra.types.TimeUuid.now(), currencies];
+        return client.execute(query, params, { prepare: true });
+    })
+    .then(function () {
+        const query =
+            "SELECT name, time, currencies, FROM examples.tuple_forex where name = ?";
+        return client.execute(query, ["market1"], { prepare: true });
+    })
+    .then(function (result) {
+        const row = result.first();
+        console.log(
+            "%s to %s",
+            row["currencies"].get(0),
+            row["currencies"].get(1),
+        );
+    })
+    .catch(function (err) {
+        console.error("There was an error", err);
+    });