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							<!DOCTYPE html>
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<head>
    <meta charset="utf-8">
    <title>JSDoc: Class: Metadata</title>

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<div id="main">

    <h1 class="page-title">Class: Metadata</h1>

    
<section>

<header>
    
        <h2><span class="attribs"><span class="type-signature"></span></span>
            <span class="ancestors"><a href="grpc.html">grpc</a>.</span>Metadata<span class="signature">()</span><span class="type-signature"></span></h2>
        
    
</header>

<article>
    <div class="container-overview">
    
        
    <h4 class="name" id="Metadata"><span class="type-signature"></span>new Metadata<span class="signature">()</span><span class="type-signature"></span></h4>
    

<div class="description">
    <p>Class for storing metadata. Keys are normalized to lowercase ASCII.</p>
</div>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="src_metadata.js.html">src/metadata.js</a>, <a href="src_metadata.js.html#line35">line 35</a>
    </li></ul></dd>
    

</dl>


    <h5>Example</h5>
    
    <pre class="prettyprint"><code>var metadata = new metadata_module.Metadata();
metadata.set('key1', 'value1');
metadata.add('key1', 'value2');
metadata.get('key1') // returns ['value1', 'value2']</code></pre>


    </div>

    
        <h3 class="subsection-title">Methods</h3>

        
    <h4 class="name" id="add"><span class="type-signature"></span>add<span class="signature">(key, value)</span><span class="type-signature"></span></h4>
    

<div class="description">
    <p>Adds the given value for the given key. Normalizes the key.</p>
</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>key</code></td>
            

            <td class="type">
            
                
<span class="param-type">String</span>


            </td>

            
            <td class="description last"><p>The key to add to.</p></td>
        </tr>

    
        <tr>
            
                <td class="name"><code>value</code></td>
            

            <td class="type">
            
                
<span class="param-type">String</span>
|

<span class="param-type">Buffer</span>


            </td>

            
            <td class="description last"><p>The value to add. Must be a buffer if and only
    if the normalized key ends with '-bin'</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="src_metadata.js.html">src/metadata.js</a>, <a href="src_metadata.js.html#line84">line 84</a>
    </li></ul></dd>
    

</dl>


    <h4 class="name" id="clone"><span class="type-signature"></span>clone<span class="signature">()</span><span class="type-signature"> &rarr; {Metadata}</span></h4>
    

<div class="description">
    <p>Clone the metadata object.</p>
</div>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="src_metadata.js.html">src/metadata.js</a>, <a href="src_metadata.js.html#line137">line 137</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The new cloned object</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">Metadata</span>


    </dd>
</dl>

    
    <h4 class="name" id="get"><span class="type-signature"></span>get<span class="signature">(key)</span><span class="type-signature"> &rarr; {Array.&lt;(String|Buffer)>}</span></h4>
    

<div class="description">
    <p>Gets a list of all values associated with the key. Normalizes the key.</p>
</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>key</code></td>
            

            <td class="type">
            
                
<span class="param-type">String</span>


            </td>

            
            <td class="description last"><p>The key to get</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="src_metadata.js.html">src/metadata.js</a>, <a href="src_metadata.js.html#line109">line 109</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>The values associated with that key</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">Array.&lt;(String|Buffer)></span>


    </dd>
</dl>

    
    <h4 class="name" id="getMap"><span class="type-signature"></span>getMap<span class="signature">()</span><span class="type-signature"> &rarr; {Object.&lt;String, (String|Buffer)>}</span></h4>
    

<div class="description">
    <p>Get a map of each key to a single associated value. This reflects the most
common way that people will want to see metadata.</p>
</div>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="src_metadata.js.html">src/metadata.js</a>, <a href="src_metadata.js.html#line123">line 123</a>
    </li></ul></dd>
    

</dl>


<h5>Returns:</h5>

        
<div class="param-desc">
    <p>A key/value mapping of the metadata</p>
</div>


<dl>
    <dt>
        Type
    </dt>
    <dd>
        
<span class="param-type">Object.&lt;String, (String|Buffer)></span>


    </dd>
</dl>

    
    <h4 class="name" id="remove"><span class="type-signature"></span>remove<span class="signature">(key)</span><span class="type-signature"></span></h4>
    

<div class="description">
    <p>Remove the given key and any associated values. Normalizes the key.</p>
</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>key</code></td>
            

            <td class="type">
            
                
<span class="param-type">String</span>


            </td>

            
            <td class="description last"><p>The key to remove</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="src_metadata.js.html">src/metadata.js</a>, <a href="src_metadata.js.html#line97">line 97</a>
    </li></ul></dd>
    

</dl>


    <h4 class="name" id="set"><span class="type-signature"></span>set<span class="signature">(key, value)</span><span class="type-signature"></span></h4>
    

<div class="description">
    <p>Sets the given value for the given key, replacing any other values associated
with that key. Normalizes the key.</p>
</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>key</code></td>
            

            <td class="type">
            
                
<span class="param-type">String</span>


            </td>

            
            <td class="description last"><p>The key to set</p></td>
        </tr>

    
        <tr>
            
                <td class="name"><code>value</code></td>
            

            <td class="type">
            
                
<span class="param-type">String</span>
|

<span class="param-type">Buffer</span>


            </td>

            
            <td class="description last"><p>The value to set. Must be a buffer if and only
    if the normalized key ends with '-bin'</p></td>
        </tr>

    
    </tbody>
</table>


<dl class="details">

    
    <dt class="tag-source">Source:</dt>
    <dd class="tag-source"><ul class="dummy"><li>
        <a href="src_metadata.js.html">src/metadata.js</a>, <a href="src_metadata.js.html#line72">line 72</a>
    </li></ul></dd>
    

</dl>


</article>

</section>


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