harborn-digital / mongoaggregations Goto Github PK

Make it possible to export the result of a an aggregation as CSV. Suggested API:

$result = $collection->aggregate($aggregationBuilder->build());
$csvBuilder = new CSVExport();
$csvBuilder->exportToFile($result, 'result.csv');

See #23

See https://docs.mongodb.org/manual/reference/operator/aggregation/week/

This library depends on phpunit, it should only do so in development.

Mongo Aggregations are powerful for reporting purposes. However Mongo does not support joins which makes it hard to report over multiple collections unless you've got a database design that uses embedded collections. This library should have a method to create a temporary collection that unreferences the references in the documents in a collection. A query may be added to the temporary collection to reduce overhead and increase performance.

API will look like:

$temporaryCollection = new EmbeddedCollection($collectionName, $query);
$result = $temporaryCollection->aggregate($aggregationBuilder->build());
$temporaryCollection->remove();

See https://docs.mongodb.org/manual/reference/operator/aggregation/sort/

Make it possible to create expression objects as described in issue #34 using a builder.

Example:

Create expression manually:

$cond = new Condition();
$cond->setIf(new EqualsExpression('foo', 'foo')); 

Use the builder:

$cond = new Condition();
$cond->setIf(ExpressionBuilder::build('foo == "foo"'));

See #25

A projection operation that results in 'myfield': '$myotherfield' should be added.

There should be better documentation including examples

The current CSVExporter should not be in the package. There should be a separate package defining an interface that can export data in a given format to another format. This package should depend on that to export (preprocessed) aggregation array to whatever format the package supports.

If can only be set using mongo arrays. A level of abstraction should be added to allow creating an if using an object. Example:

Current code:

$cond = new Condition();
$cond->setIfByArray(['$eq' => ['$foo', 'foo']]);

Should be possible:

$cond = new Condition();
$cond->setIf(new EqualsExpression('foo', 'foo'));