Added support for MongoDB aggregation framework to the datasource

[codingthoughts]

Now, we can pass something like:

$conditions = array(
'aggregate' => array(
array(
'$match' => array(
'refNo' => 1,
'date' => array(
'$gte' => '2013-03-30',
'$lte' => '2013-04-30'
)
)
),
array(
'$group' => array(
'_id' => '$product',
'count' => array(
'$sum' => '$count'
)
)
),
array(
'$project' => array(
'product' => '$_id',
'count' => 1
)
)
)
)

to the paginate or find method. It is the same array as you would pass to the MongoDB aggregate method for the PHP driver.

Fully works with pagination.

[k1LoW]

If you can, add testcase, because I do not know what is correct.

[codingthoughts]

Sure, i will add test cases and commit them soon.

[k1LoW]

Thank you !

[codingthoughts]

Hi, I have added test cases.

[coveralls]

Changes Unknown when pulling 0303bac on codingthoughts:cake2.2 into * on ichikaway:cake2.2*.

[k1LoW]

Unfortunately, testcase failed in Travis CI. (maybe mongo version)

check following url
https://travis-ci.org/ichikaway/cakephp-mongodb/builds/6792448

[codingthoughts]

Hi, I looked at it. The case is failing in PECL Mongo 1.2.9 driver which is almost a year old and it did not have the support for aggregation framework. All the newer versions support aggregation.Aggregation requires version greater than 1.3.0.

Checkout:
http://pecl.php.net/package/mongo