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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Class: Collection</title>
<script src="scripts/prettify/prettify.js"> </script>
<script src="scripts/prettify/lang-css.js"> </script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css">
</head>
<body>
<div id="main">
<h1 class="page-title">Class: Collection</h1>
<section>
<header>
<h2>
<span class="ancestors"><a href="ClearBlade.html">ClearBlade</a>.</span>Collection</h2>
<div class="class-description">This class represents a server-side collection. It does not actully make a connection upon instantiation, but has all the methods necessary to do so. It also has all the methods necessary to do operations on the server-side collections.</div>
</header>
<article>
<div class="container-overview">
<h2>Constructor</h2>
<h4 class="name" id="Collection"><span class="type-signature"></span>new Collection<span class="signature">(collectionID)</span><span class="type-signature"></span></h4>
<div class="description">
Creates a new Collection that represents the server-side collection with the specified collection ID
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>collectionID</code></td>
<td class="type">
<span class="param-type">String</span>
</td>
<td class="description last">The string ID for the collection you want to represent.</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="ClearBlade.js.html">ClearBlade.js</a>, <a href="ClearBlade.js.html#line707">line 707</a>
</li></ul></dd>
</dl>
<h5>Example</h5>
<pre class="prettyprint"><code>var col = cb.Collection("12asd3049qwe834qe23asdf1234");</code></pre>
</div>
<h3 class="subsection-title">Methods</h3>
<h4 class="name" id="create"><span class="type-signature"></span>create<span class="signature">(newItem, callback)</span><span class="type-signature"></span></h4>
<div class="description">
Creates a new item in the collection and returns the created item to the callback
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>newItem</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="description last">An object that represents an item that you want to add to the collection</td>
</tr>
<tr>
<td class="name"><code>callback</code></td>
<td class="type">
<span class="param-type">function</span>
</td>
<td class="description last">Supplies processing for what to do with the data that is returned from the collection</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="ClearBlade.js.html">ClearBlade.js</a>, <a href="ClearBlade.js.html#line790">line 790</a>
</li></ul></dd>
</dl>
<h5>Example</h5>
<p class="code-caption">Creating a new item in the collection</p>
<pre class="prettyprint"><code>//This example assumes a collection of items that have the columns: name, height, and age.
var newPerson = {
name: 'Jim',
height: 70,
age: 32
};
var callback = function (err, data) {
if (err) {
throw new Error (data);
} else {
console.log(data);
}
};
col.create(newPerson, callback);
//this inserts the the newPerson item into the collection that col represents</code></pre>
<h4 class="name" id="fetch"><span class="type-signature"></span>fetch<span class="signature">(_query, callback)</span><span class="type-signature"> → {<a href="ClearBlade.Item.html">ClearBlade.Item</a>}</span></h4>
<div class="description">
Reqests an item or a set of items from the collection.
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>_query</code></td>
<td class="type">
<span class="param-type">Query</span>
</td>
<td class="description last">Used to request a specific item or subset of items from the collection on the server. Optional.</td>
</tr>
<tr>
<td class="name"><code>callback</code></td>
<td class="type">
<span class="param-type">function</span>
</td>
<td class="description last">Supplies processing for what to do with the data that is returned from the collection</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="ClearBlade.js.html">ClearBlade.js</a>, <a href="ClearBlade.js.html#line731">line 731</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
An array of ClearBlade Items
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type"><a href="ClearBlade.Item.html">ClearBlade.Item</a></span>
</dd>
</dl>
<h5>Example</h5>
<p class="code-caption">Fetching data from a collection</p>
<pre class="prettyprint"><code>var returnedData = [];
var callback = function (err, data) {
if (err) {
throw new Error (data);
} else {
returnedData = data;
}
};
col.fetch(query, callback);
//this will give returnedData the value of what ever was returned from the server.</code></pre>
<h4 class="name" id="remove"><span class="type-signature"></span>remove<span class="signature">(_query, callback)</span><span class="type-signature"></span></h4>
<div class="description">
Removes an item or set of items from the specified collection
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>_query</code></td>
<td class="type">
<span class="param-type">Query</span>
</td>
<td class="description last">Query object that used to define what item or set of items to remove</td>
</tr>
<tr>
<td class="name"><code>callback</code></td>
<td class="type">
<span class="param-type">function</span>
</td>
<td class="description last">Function that handles the response from the server</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="ClearBlade.js.html">ClearBlade.js</a>, <a href="ClearBlade.js.html#line867">line 867</a>
</li></ul></dd>
</dl>
<h5>Example</h5>
<p class="code-caption">Removing an item in a collection</p>
<pre class="prettyprint"><code>//This example assumes that you have a collection with the item whose 'name' attribute is 'John'
var query = ClearBlade.Query();
query.equalTo('name', 'John');
var callback = function (err, data) {
if (err) {
throw new Error (data);
} else {
console.log(data);
}
};
col.remove(query, callback);
//removes every item whose 'name' attribute is equal to 'John'</code></pre>
<h4 class="name" id="update"><span class="type-signature"></span>update<span class="signature">(_query, changes, callback)</span><span class="type-signature"></span></h4>
<div class="description">
Updates an existing item or set of items
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>_query</code></td>
<td class="type">
<span class="param-type">Query</span>
</td>
<td class="description last">Query object to denote which items or set of Items will be changed</td>
</tr>
<tr>
<td class="name"><code>changes</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="description last">Object representing the attributes that you want changed</td>
</tr>
<tr>
<td class="name"><code>callback</code></td>
<td class="type">
<span class="param-type">function</span>
</td>
<td class="description last">Function that handles the response of the server</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="ClearBlade.js.html">ClearBlade.js</a>, <a href="ClearBlade.js.html#line828">line 828</a>
</li></ul></dd>
</dl>
<h5>Example</h5>
<p class="code-caption">Updating a set of items</p>
<pre class="prettyprint"><code>//This example assumes a collection of items that have the columns name and age.
var query = ClearBlade.Query();
query.equalTo('name', 'John');
var changes = {
age: 23
};
var callback = function (err, data) {
if (err) {
throw new Error (data);
} else {
console.log(data);
}
};
col.update(query, changes, callback);
//sets John's age to 23</code></pre>
</article>
</section>
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="ClearBlade.Code.html">Code</a></li><li><a href="ClearBlade.Collection.html">Collection</a></li><li><a href="ClearBlade.Item.html">Item</a></li><li><a href="ClearBlade.Messaging.html">Messaging</a></li><li><a href="ClearBlade.Query.html">Query</a></li><li><a href="ClearBlade.User.html">User</a></li></ul><h3>Namespaces</h3><ul><li><a href="ClearBlade.html">ClearBlade</a></li></ul>
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