Initial commit

node_modules/mongodb/lib/operations/find.js

@@ -0,0 +1,40 @@
+'use strict';
+
+const OperationBase = require('./operation').OperationBase;
+const Aspect = require('./operation').Aspect;
+const defineAspects = require('./operation').defineAspects;
+const ReadPreference = require('../core').ReadPreference;
+const maxWireVersion = require('../core/utils').maxWireVersion;
+const MongoError = require('../core/error').MongoError;
+
+class FindOperation extends OperationBase {
+  constructor(collection, ns, command, options) {
+    super(options);
+
+    this.ns = ns;
+    this.cmd = command;
+    this.readPreference = ReadPreference.resolve(collection, this.options);
+  }
+
+  execute(server, callback) {
+    // copied from `CommandOperationV2`, to be subclassed in the future
+    this.server = server;
+
+    if (typeof this.cmd.allowDiskUse !== 'undefined' && maxWireVersion(server) < 4) {
+      callback(new MongoError('The `allowDiskUse` option is not supported on MongoDB < 3.2'));
+      return;
+    }
+
+    // TOOD: use `MongoDBNamespace` through and through
+    const cursorState = this.cursorState || {};
+    server.query(this.ns.toString(), this.cmd, cursorState, this.options, callback);
+  }
+}
+
+defineAspects(FindOperation, [
+  Aspect.READ_OPERATION,
+  Aspect.RETRYABLE,
+  Aspect.EXECUTE_WITH_SELECTION
+]);
+
+module.exports = FindOperation;