Truncating functionality

lib/cql/builders.js

@@ -8,6 +8,7 @@ require('lodash').forIn({
     delete: require('../cql/queries/delete'),
     insert: require('../cql/queries/insert'),
     update: require('../cql/queries/update'),
+    truncate: require('../cql/queries/truncate'),
     alterTable: require('../cql/queries/alterTable')
 }, function (Builder, name) {
     builders[name] = function () {

lib/cql/queries/truncate.js

@@ -0,0 +1,36 @@
+var Columns = require('../stmt/columns');
+var Where = require('../stmt/where');
+var Conditionals = require('../stmt/conditionals');
+var Options = require('../stmt/options');
+var Base = require('./base');
+var util = require('../../util');
+
+function Truncate () {
+    Base.apply(this, arguments);
+
+    this.parts = { table: null };
+}
+
+Truncate.prototype = new Base();
+
+/**
+ * Sets the table to truncate.
+ * @param  {String|Table} table
+ * @return {Truncate}
+ */
+Truncate.prototype.table = function (table) {
+    this.parts.table = util.resolveName(table);
+    return this;
+};
+
+/**
+ * Parameterizes the query, returning an array of parameters followed
+ * by the string representation.
+ *
+ * @return {[Array, String]}
+ */
+Truncate.prototype.parameterize = function () {
+    return [[], 'TRUNCATE ' + this.parts.table + ';'];
+};
+
+module.exports = Truncate;

lib/model/collection.js

@@ -148,6 +148,14 @@ Collection.prototype.update = function () {
     return this.connection.update().table(this.table.getName());
 };
 
+/**
+ * Truncates data in the collection's table.
+ * @return {Promise}
+ */
+Collection.prototype.truncate = function () {
+    return this.connection.truncate().table(this.table.getName());
+};
+
 /**
  * Checks out a new Model from the collection.
  *

spec/model/CollectionSpec.js

@@ -81,4 +81,13 @@ describe('collection', function () {
             done();
         });
     });
+
+    it('truncates', function (done) {
+        collection.truncate().table('tbl').then(function () {
+            expect(connection.queryLog).toEqual([
+                ['TRUNCATE tbl;', [], {}]
+            ]);
+            done();
+        });
+    });
 });