remove count (#587)

Author: mongoKart

source/code-snippets/crud/cursor.js

@@ -11,7 +11,7 @@ async function forEachIteration(myColl) {
   const cursor = myColl.find({});
   await cursor.forEach(doc => console.log(doc));
   // end foreach cursor example
-  console.log(await cursor.count());
+  console.log(await myColl.countDocuments());
 }
 
 async function asyncIteration(myColl) {
@@ -68,12 +68,8 @@ async function rewind(myColl) {
   // end rewind cursor example
 }
 
-async function count(myColl) {
-  // start count cursor example
+async function close(myColl) {
   const cursor = myColl.find({});
-  const count = await cursor.count();
-  // end count cursor example
-  console.log(count);
 
   // start close cursor example
   await cursor.close();

source/code-snippets/crud/startrek.js

@@ -20,7 +20,7 @@ async function word(movies) {
   // end word text example
 
   // print a message if no documents were found
-  if ((await cursor.count()) === 0) {
+  if ((await movies.countDocuments(query)) === 0) {
     console.log("No documents found!");
   }
   await cursor.forEach(console.dir);
@@ -41,7 +41,7 @@ async function phrase(movies) {
   // end phrase text example
 
   // print a message if no documents were found
-  if ((await cursor.count()) == 0) {
+  if ((await movies.countDocuments(query)) === 0) {
     console.log("No documents found!");
   }
   await cursor.forEach(console.dir);
@@ -62,7 +62,7 @@ async function negation(movies) {
   // end negation text example
 
   // print a message if no documents were found
-  if ((await cursor.count()) == 0) {
+  if ((await movies.countDocuments(query)) === 0) {
     console.log("No documents found!");
   }
   await cursor.forEach(console.dir);
@@ -89,7 +89,7 @@ async function relevance(movies) {
   // end relevance text example
 
   // print a message if no documents were found
-  if ((await cursor.count()) === 0) {
+  if ((await movies.countDocuments(query)) === 0) {
     console.log("No documents found!");
   }
   await cursor.forEach(console.dir);

source/code-snippets/crud/theaters.js

@@ -21,7 +21,7 @@ async function proximity(theaters) {
   // end proximity geo example
 
   // print a message if no documents were found
-  if ((await cursor.count()) == 0) {
+  if ((await theaters.countDocuments(query)) === 0) {
     console.log("No documents found!");
   }
   await cursor.forEach(console.dir);
@@ -52,7 +52,7 @@ async function range(theaters) {
   // end range geo example
 
   // print a message if no documents were found
-  if ((await cursor.count()) === 0) {
+  if ((await theaters.countDocuments(query)) === 0) {
     console.log("No documents found!");
   }
   await cursor.forEach(console.dir);

source/code-snippets/faq/maxTimeMS-example.js

@@ -1,5 +1,4 @@
 // Execute a find command
 await collection
   .find({ $where: "sleep(100) || true" })
-  .maxTimeMS(50)
-  .count((err, count) => {});
+  .maxTimeMS(50);

source/code-snippets/usage-examples/find.js

@@ -23,7 +23,7 @@ async function run() {
     const cursor = movies.find(query, options);
 
     // print a message if no documents were found
-    if ((await cursor.count()) === 0) {
+    if ((await movies.countDocuments(query)) === 0) {
       console.log("No documents found!");
     }
 

source/code-snippets/usage-examples/find.ts

@@ -24,15 +24,16 @@ async function run() {
     const database = client.db("sample_mflix");
     const movies = database.collection<Movie>("movies");
 
+    const query = { runtime: { $lt: 15 } };
     const cursor = movies.find<Movie>(
-      { runtime: { $lt: 15 } },
+      query,
       {
         sort: { title: 1 },
         projection: { _id: 0, title: 1, imdb: 1 },
       }
     );
 
-    if ((await cursor.count()) === 0) {
+    if ((await movies.countDocuments(query)) === 0) {
       console.warn("No documents found!");
     }
 

source/fundamentals/crud/read-operations/cursor.txt

@@ -148,17 +148,6 @@ As Readable Streams, cursors also support the Event API's
 Cursor Utility Methods
 ----------------------
 
-Count
-~~~~~
-
-For an estimated count of the number of documents referenced by the
-cursor, use `count() <{+api+}/classes/FindCursor.html#count>`__:
-
-.. literalinclude:: /code-snippets/crud/cursor.js
-   :language: javascript
-   :start-after: start count cursor example
-   :end-before: end count cursor example
-
 Rewind
 ~~~~~~