First Commit

node_modules/mongodb/lib/operations/has_next.js

@@ -0,0 +1,40 @@
+'use strict';
+
+const Aspect = require('./operation').Aspect;
+const defineAspects = require('./operation').defineAspects;
+const loadCursor = require('../dynamic_loaders').loadCursor;
+const OperationBase = require('./operation').OperationBase;
+const nextObject = require('./common_functions').nextObject;
+
+class HasNextOperation extends OperationBase {
+  constructor(cursor) {
+    super();
+
+    this.cursor = cursor;
+  }
+
+  execute(callback) {
+    const cursor = this.cursor;
+    let Cursor = loadCursor();
+
+    if (cursor.s.currentDoc) {
+      return callback(null, true);
+    }
+
+    if (cursor.isNotified()) {
+      return callback(null, false);
+    }
+
+    nextObject(cursor, (err, doc) => {
+      if (err) return callback(err, null);
+      if (cursor.s.state === Cursor.CLOSED || cursor.isDead()) return callback(null, false);
+      if (!doc) return callback(null, false);
+      cursor.s.currentDoc = doc;
+      callback(null, true);
+    });
+  }
+}
+
+defineAspects(HasNextOperation, Aspect.SKIP_SESSION);
+
+module.exports = HasNextOperation;