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Docsp 9582 (#54)
* DOCSP-9582: builders overview * add more information and link to pages * code formatting * fix ref * Update source/fundamentals/builders.txt Co-authored-by: Chris Cho <[email protected]> * Update source/fundamentals/builders.txt Co-authored-by: Chris Cho <[email protected]> * Update source/fundamentals/builders.txt Co-authored-by: Chris Cho <[email protected]> * nits Co-authored-by: Chris Cho <[email protected]>
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‎snooty.toml‎

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name = "java"
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title = "Java"
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toc_landing_pages = ["/fundamentals/connection", "/fundamentals/crud"]
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toc_landing_pages = [
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"/fundamentals/connection",
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"/fundamentals/crud",
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"/fundamentals/builders"
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]
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[constants]
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version = 4.0

‎source/fundamentals/builders.txt‎

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========
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Builders
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========
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.. default-domain:: mongodb
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.. toctree::
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/fundamentals/builders/aggregates
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/fundamentals/builders/filters
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/fundamentals/builders/indexes
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/fundamentals/builders/projections
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/fundamentals/builders/sort
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/fundamentals/builders/updates
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.. contents:: On this page
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:local:
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:backlinks: none
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:depth: 2
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:class: singlecol
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This section includes guides on how to use each of the available builders, and demonstrates the utility the Java driver
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builder classes provide.
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Overview
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--------
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The Java driver provides classes to make it easier to use CRUD operations and the Aggregation API. The static utility methods
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allow you to build a query more succinctly.
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Imagine we want to send a marketing email to all users in our users collection that identify as "female" gender and are older than "29".
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We only need their email address, so we'll ensure our query doesn't return data we pay bandwidth
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costs for but don't need.
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Using JSON and the MongoDB shell, the query would look something like:
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.. code-block:: js
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collection.find({ "gender": "female", "age" : { "$gt": 29 }}, { "_id": 0, "email": 1 })
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Without builders, we construct the query in Java as:
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.. code-block:: java
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Bson filter = new Document().append("gender", "female").append("age", new Document().append("$gt", 28));
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Bson projection = new Document().append("_id", 0).append("email", 1);
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collection.find(filter).projection(projection);
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With builders, the query becomes:
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.. code-block:: java
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import static com.mongodb.client.model.Filters.*;
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import static com.mongodb.client.model.Projections.*;
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...
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Bson filter = and(eq("gender", "female"), gt("age", 29));
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Bson projection = fields(excludeId(), include("email"));
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collection.find(filter).projection(projection);
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Available Builders
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------------------
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- :ref:`Filters <filters-builders>` for building query filters.
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- :ref:`Projections <projections-builders>` for building projections.
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- :ref:`Sorts <sorts-builders>` for building sort criteria.
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- :ref:`Updates <updates-builders>` for building updates.
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- :ref:`Aggregates <aggregates-builders>` for building aggregation pipelines.
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- :ref:`Indexes <indexes-builders>` for creating index keys.

‎source/fundamentals/builders/aggregates.txt‎

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===================
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Aggregates Builders
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===================
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.. default-domain:: mongodb
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.. contents:: On this page
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:local:
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:backlinks: none
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:depth: 2
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:class: singlecol
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.. _aggregates-builders:

‎source/fundamentals/builders/filters.txt‎

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================
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Filters Builders
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================
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.. default-domain:: mongodb
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.. contents:: On this page
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:local:
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:backlinks: none
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:depth: 2
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:class: singlecol
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.. _filters-builders:

‎source/fundamentals/builders/indexes.txt‎

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================
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Indexes Builders
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================
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.. default-domain:: mongodb
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.. contents:: On this page
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:local:
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:backlinks: none
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:depth: 2
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:class: singlecol
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.. _indexes-builders:

‎source/fundamentals/builders/projections.txt‎

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====================
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Projections Builders
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====================
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.. default-domain:: mongodb
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.. contents:: On this page
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:local:
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:backlinks: none
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:depth: 2
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:class: singlecol
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.. _projections-builders:

‎source/fundamentals/builders/sort.txt‎

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==============
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Sorts Builders
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==============
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.. default-domain:: mongodb
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.. contents:: On this page
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:local:
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:backlinks: none
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:depth: 2
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:class: singlecol
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.. _sorts-builders:

‎source/fundamentals/builders/updates.txt‎

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================
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Updates Builders
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================
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.. default-domain:: mongodb
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.. contents:: On this page
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:local:
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:backlinks: none
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:depth: 2
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:class: singlecol
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.. _updates-builders:

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