# Static Methods

## Static Methods

### as(objectName)

Extends CortexObject and returns a class with a constructor name matching objectName.

**Arguments**

* `objectName` (String)

**Returns**

ClassJavaScript

```
const Nums = CortexObject.as('c_num');
const _id = Nums.insertOne({c_val: [1, 2, 3]}).execute();
```

### from(context)

Returns an instance of a CortexObject based on the passed in context argument, which should have at least `_id` and `object` properties.

**Arguments**

* `context` (Object)

**Returns**

CortexObject instance

### aggregate(pipeline=\[])

Returns an aggregation cursor based on the optional passed in `pipeline` argument. The pipeline must be in the form of an array and named aggregation steps (`[{$match: {...}}, {$project: {...}}, ...]`). A pipeline can also be built later using aggregation cursor chaining.

**Arguments**

* `pipeline` (Object\[])

**Returns**

[AggregationCursor](https://docs.medable.com/reference#aggregationcursor)

### count(match)

Returns a count of matching documents of the current CortexObject.

**Arguments**

* `match` (Object) Optional match filter document.

**Returns**

Number

### deleteOne(match)

Returns a delete operation based on the passed in `match` filter.

**Arguments**

* `match` (Object) Optional match filter document.

**Returns**

([DeleteOperation](https://docs.medable.com/reference#deleteoperation))

### find(match)

Returns a cursor based on the passed in `match` filter.

**Arguments**

* `match` (Object) Match filter document.

**Returns**

[QueryCursor](https://docs.medable.com/reference#querycursor)

### insertOne(doc)

Returns an insert operation.

**Arguments**

* `doc` (Object) The document to insert.

**Returns**

[InsertOperation](https://docs.medable.com/reference#insertoperation)

### setOwner(id, to)

Transfers ownership of a context object to another account.

**Arguments**

* `id` (ObjectID) The identifier of the instance to update.
* `to` (ObjectID|String) The identifier or email of the new owner account.

**Returns**

Boolean true is modified or false if already owned by `to`.

{% hint style="warning" %}
setOwner is a low-level operation and does not implement any access controls, though an Audit log record is produced.
{% endhint %}

### updateOne(match, doc)

Returns an update operation based on the passed in `match` filter.

`$set` and `$push` operations support updating existing document array elements by including their identifiers (e.g. push 2 items into c\_arr of a specific document in the c\_docs document array: `{ $push: {c_docs: {_id: '599284e01c9e955ff7526793', c_arr: [1, 2] }}}`).

`$unset` operations can remove properties buried in specific documents

**Arguments**

* `match` (Object) Optional match filter document.
* `doc` (Object) An object containing the changes to effect. Update supports $set, $push, $unset and $remove.
  * `$set` Contains properties to update. (e.g. `{$set: {name: {first: 'Auric', last: 'Goldfinger'}}}`)
  * `$push` Contains items to push into arrays and document arrays (e.g. `{$push: {c_names: ['Jill Masterson']}}`)
  * `$unset` Unset one or more deletable properties (e.g. `{$unset: {'c_doc.59928b74341a65ef3f03842b.c_deletable': 1, c_remove_me: 1}}`).
  * `$remove` Removes elements from arrays, by full path (e.g. remove 2 documents from c\_doc\_array by identifier and all 1 and 2 values from c\_num\_arr in the c\_doc\_array document with an identifier of 59928b74341a65ef3f03842b: `$remove: {'c_doc_array': ['59928aed341a65ef3f03836a', '59928af9341a65ef3f038380'], 'c_doc_array.59928b74341a65ef3f03842b.c_num_arr': [1,2] }`)

**Returns**

[UpdateOperation](https://docs.medable.com/reference#updateoperation)\
const Nums = CortexObject.as('c\_nums');

```

Nums.updateOne({_id: '5992879ef4e03e6c3f682c5e'}, {
  $push: {    
    c_doc: {
      c_arr: [1, 2, 3]
    }
  },
  $set: {
    c_doc: [{
      _id: '59928b74341a65ef3f03842b',
      c_del: 420,
      c_arr: [1, 2, 3, 4]
    }]
  },
  $unset: {
    'c_doc.59928b74341a65ef3f03842b.c_del': 1
  },
  $remove: {
    c_doc: ['59928aed341a65ef3f03836a', '59928af9341a65ef3f038380']
    'c_doc.59928b74341a65ef3f03842b.c_arr': [1,2]
  }
}).execute();
```


---

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