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Timothée Rebours
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auto-generate docs in markdown and html
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docs/Cursor.md

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<a name="Cursor"></a>
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## Cursor ⇐ <code>Promise</code>
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<p>Manage access to data, be it to find, update or remove it.</p>
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<p>It extends Promise so that its methods are chainable &amp; awaitable.</p>
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**Kind**: global class
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**Extends**: <code>Promise</code>
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* [Cursor](#Cursor) ⇐ <code>Promise</code>
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* [new Cursor(db, query, [execFn], [async])](#new_Cursor_new)
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* _instance_
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* [.limit(limit)](#Cursor+limit)[<code>Cursor</code>](#Cursor)
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* [.skip(skip)](#Cursor+skip)[<code>Cursor</code>](#Cursor)
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* [.sort(sortQuery)](#Cursor+sort)[<code>Cursor</code>](#Cursor)
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* [.projection(projection)](#Cursor+projection)[<code>Cursor</code>](#Cursor)
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* [.project(candidates)](#Cursor+project)[<code>Array.&lt;document&gt;</code>](#document)
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* [._execAsync()](#Cursor+_execAsync)[<code>Array.&lt;document&gt;</code>](#document) \| <code>Promise.&lt;\*&gt;</code>
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* [._exec(_callback)](#Cursor+_exec)
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* [.exec(_callback)](#Cursor+exec)
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* [.execAsync()](#Cursor+execAsync) ⇒ <code>Promise.&lt;(Array.&lt;document&gt;\|\*)&gt;</code>
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* _inner_
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* [~execFn](#Cursor..execFn) : <code>function</code>
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* [~execFnAsync](#Cursor..execFnAsync) ⇒ <code>Promise</code>
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* [~execCallback](#Cursor..execCallback) : <code>function</code>
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<a name="new_Cursor_new"></a>
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### new Cursor(db, query, [execFn], [async])
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<p>Create a new cursor for this collection</p>
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| Param | Type | Default | Description |
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| --- | --- | --- | --- |
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| db | [<code>Datastore</code>](#Datastore) | | <p>The datastore this cursor is bound to</p> |
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| query | [<code>query</code>](#query) | | <p>The query this cursor will operate on</p> |
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| [execFn] | [<code>execFn</code>](#Cursor..execFn) \| [<code>execFnAsync</code>](#Cursor..execFnAsync) | | <p>Handler to be executed after cursor has found the results and before the callback passed to find/findOne/update/remove</p> |
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| [async] | <code>boolean</code> | <code>false</code> | <p>If true, specifies that the <code>execFn</code> is of type [execFnAsync](#Cursor..execFnAsync) rather than [execFn](#Cursor..execFn).</p> |
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<a name="Cursor+limit"></a>
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### cursor.limit(limit) ⇒ [<code>Cursor</code>](#Cursor)
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<p>Set a limit to the number of results</p>
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**Kind**: instance method of [<code>Cursor</code>](#Cursor)
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| Param | Type |
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| --- | --- |
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| limit | <code>Number</code> |
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<a name="Cursor+skip"></a>
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### cursor.skip(skip) ⇒ [<code>Cursor</code>](#Cursor)
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<p>Skip a number of results</p>
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**Kind**: instance method of [<code>Cursor</code>](#Cursor)
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| Param | Type |
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| --- | --- |
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| skip | <code>Number</code> |
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<a name="Cursor+sort"></a>
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### cursor.sort(sortQuery) ⇒ [<code>Cursor</code>](#Cursor)
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<p>Sort results of the query</p>
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**Kind**: instance method of [<code>Cursor</code>](#Cursor)
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| Param | Type | Description |
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| --- | --- | --- |
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| sortQuery | <code>Object.&lt;string, number&gt;</code> | <p>sortQuery is { field: order }, field can use the dot-notation, order is 1 for ascending and -1 for descending</p> |
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<a name="Cursor+projection"></a>
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### cursor.projection(projection) ⇒ [<code>Cursor</code>](#Cursor)
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<p>Add the use of a projection</p>
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**Kind**: instance method of [<code>Cursor</code>](#Cursor)
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| Param | Type | Description |
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| --- | --- | --- |
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| projection | <code>Object.&lt;string, number&gt;</code> | <p>MongoDB-style projection. {} means take all fields. Then it's { key1: 1, key2: 1 } to take only key1 and key2 { key1: 0, key2: 0 } to omit only key1 and key2. Except _id, you can't mix takes and omits.</p> |
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<a name="Cursor+project"></a>
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### cursor.project(candidates) ⇒ [<code>Array.&lt;document&gt;</code>](#document)
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<p>Apply the projection</p>
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**Kind**: instance method of [<code>Cursor</code>](#Cursor)
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| Param | Type |
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| --- | --- |
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| candidates | [<code>Array.&lt;document&gt;</code>](#document) |
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<a name="Cursor+_execAsync"></a>
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### cursor.\_execAsync() ⇒ [<code>Array.&lt;document&gt;</code>](#document) \| <code>Promise.&lt;\*&gt;</code>
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<p>Get all matching elements
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Will return pointers to matched elements (shallow copies), returning full copies is the role of find or findOne
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This is an internal function, use execAsync which uses the executor</p>
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**Kind**: instance method of [<code>Cursor</code>](#Cursor)
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<a name="Cursor+_exec"></a>
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### cursor.\_exec(_callback)
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<p>Get all matching elements
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Will return pointers to matched elements (shallow copies), returning full copies is the role of find or findOne
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This is an internal function, use exec which uses the executor</p>
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**Kind**: instance method of [<code>Cursor</code>](#Cursor)
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| Param | Type |
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| --- | --- |
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| _callback | [<code>execCallback</code>](#Cursor..execCallback) |
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<a name="Cursor+exec"></a>
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### cursor.exec(_callback)
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<p>Get all matching elements
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Will return pointers to matched elements (shallow copies), returning full copies is the role of find or findOne</p>
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**Kind**: instance method of [<code>Cursor</code>](#Cursor)
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| Param | Type |
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| --- | --- |
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| _callback | [<code>execCallback</code>](#Cursor..execCallback) |
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<a name="Cursor+execAsync"></a>
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### cursor.execAsync() ⇒ <code>Promise.&lt;(Array.&lt;document&gt;\|\*)&gt;</code>
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<p>Get all matching elements
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Will return pointers to matched elements (shallow copies), returning full copies is the role of find or findOne</p>
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**Kind**: instance method of [<code>Cursor</code>](#Cursor)
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<a name="Cursor..execFn"></a>
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### Cursor~execFn : <code>function</code>
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**Kind**: inner typedef of [<code>Cursor</code>](#Cursor)
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| Param | Type |
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| --- | --- |
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| err | <code>Error</code> |
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| res | [<code>?Array.&lt;document&gt;</code>](#document) \| [<code>document</code>](#document) |
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<a name="Cursor..execFnAsync"></a>
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### Cursor~execFnAsync ⇒ <code>Promise</code>
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**Kind**: inner typedef of [<code>Cursor</code>](#Cursor)
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| Param | Type |
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| --- | --- |
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| res | [<code>?Array.&lt;document&gt;</code>](#document) \| [<code>document</code>](#document) |
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<a name="Cursor..execCallback"></a>
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### Cursor~execCallback : <code>function</code>
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**Kind**: inner typedef of [<code>Cursor</code>](#Cursor)
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| Param | Type | Description |
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| --- | --- | --- |
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| err | <code>Error</code> | |
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| res | [<code>Array.&lt;document&gt;</code>](#document) \| <code>\*</code> | <p>If an execFn was given to the Cursor, then the type of this parameter is the one returned by the execFn.</p> |
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