What is mquery?
The mquery npm package is a fluent MongoDB query builder designed to run in multiple environments. It provides a chainable interface for building queries and allows for the construction and manipulation of MongoDB queries with a more readable and convenient syntax.
What are mquery's main functionalities?
Building Queries
Allows for the construction of MongoDB queries using a chainable syntax. For example, to find all documents where the age field is greater than 21 and limit the results to 10 documents, you can use the following code: `mquery().find({ age: { $gt: 21 } }).limit(10)`.
{"find": {"age": {"$gt": 21}}, "limit": 10}
Query Execution
Executes the built query against a MongoDB collection. The `exec` method takes a callback function that will be called with the results of the query. For example: `mquery().find({ name: 'John Doe' }).exec(callback)`.
{"exec": "function(callback) { return this._collection.find(this._conditions, this._fields, this._options, callback); }"}
Updating Documents
Provides methods for updating documents in a MongoDB collection. For instance, to update the name field of all documents matching certain conditions, you can use: `mquery().update({ name: 'John Doe' }, { $set: { name: 'Jane Doe' } }).exec(callback)`.
{"update": {"$set": {"name": "Jane Doe"}}, "exec": "function(callback) { return this._collection.update(this._conditions, this._update, this._options, callback); }"}
Removing Documents
Allows for the removal of documents from a MongoDB collection. To remove documents that match certain conditions, you can use: `mquery().remove({ age: { $lt: 18 } }).exec(callback)`.
{"remove": "function(callback) { return this._collection.remove(this._conditions, this._options, callback); }"}
Other packages similar to mquery
mongoose
Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. It provides a straight-forward, schema-based solution to model application data. It includes built-in type casting, validation, query building, and business logic hooks. It is more feature-rich than mquery and is often used in conjunction with it as mquery is a dependency of mongoose.
mongodb
The official MongoDB driver for Node.js provides a native interface to perform queries and operations against MongoDB databases. It is more low-level compared to mquery, requiring more verbose syntax for query construction and execution.