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POSetting a custom Content-Range Header using Restlet
 

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  1. POSetting a custom Content-Range Header using Restlet
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    <p>I'm using restlet 2.0.11 to provide data for a Dojo-based web application via a REST-Web-Interface.</p> <p>According to the documentation of dojo, pagination is realized using the "content-range" header of HTTP, thus dojo expects a header like: </p> <pre><code>Content-Range: items 0-19/100 </code></pre> <p>(Source: <a href="http://dojotoolkit.org/reference-guide/1.7/dojox/data/JsonRestStore.html" rel="nofollow">http://dojotoolkit.org/reference-guide/1.7/dojox/data/JsonRestStore.html</a>)</p> <p>Which means that the REST-Api provides the first 20 of 100 total items.</p> <p>Setting the Content-Range header manually like this</p> <pre><code>getResponse().getAttributes().get("org.restlet.http.headers").add(new Parameter("Content-Range", "FooBar") </code></pre> <p>Results in the following error:</p> <pre><code>WARNING: Addition of the standard header "Content-Range" is not allowed. Please use the equivalent property in the Restlet API. </code></pre> <p>According to restlet's documentation the property is "message.entity.range" (Source: <a href="http://wiki.restlet.org/docs_2.0/130-restlet.html" rel="nofollow">http://wiki.restlet.org/docs_2.0/130-restlet.html</a>)</p> <p>The direct modification of this hash-map was also without success:</p> <pre><code>getResponse().getAttributes().put("message.entity.range", "FooBat"); </code></pre> <p>Another way which seemed to be promising is using the "Representation"-object of restlet, since it has a setRange() method, but during request time, the object reference is null:</p> <pre><code>getResponse().getEntity() </code></pre> <p>So my question is: How to set a Content-Range header to a Restlet response?</p>
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    1. USRobert Metzger
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