Sling: Find out if resource is an image

Question

I have a completely set-up CQ5/AEM application and am supposed to generate a sitemap.xml. So far, so good.

I have a list of all the pages, but some of those pages are actually images. My question: How can I find out if a page is actually an image? Both have jcr:primaryType=cq:Page

public void getMoreChildren(HttpServletRequest request, JspWriter out, Page incomingChildPage) {
        Iterator<Page> childPageChildren = incomingChildPage.listChildren();
        while (childPageChildren.hasNext()) {
            Page childPage = childPageChildren.next();
            String pagePath = childPage.getPath();
            SlingHttpServletRequest slingRequest = (SlingHttpServletRequest)request;

            ResourceResolver resourceResolver = slingRequest.getResourceResolver();
            Externalizer externalizer = resourceResolver.adaptTo(Externalizer.class);

            String externalUrl = externalizer.publishLink(resourceResolver,pagePath) + ".html";
            //do things with data so far
            getMoreChildren(request, out, childPage);
        }
}

All of this runs within a JSP and does what it's supposed to do so far, except that it treats images as pages and I want to ignore image files. What do I need to do?

score 4 · Answer 1 · answered Sep 20 '17 at 15:49

I know this question is a little old, it also seems that maybe somethings in AEM have changed.

I was looking for how to determine if an asset in the DAM was an image too, without making my own utility to check the mime type. I eventually found a built in way to do this. There is a utility name DamUtil that has all kinds of useful things on it. The method needed to answer the OP's question is isImage().

Resource resource = resourceResolver.resolve("/content/dam/we-retail/en/people/womens/women_2.jpg");
Asset asset = resource.adaptTo(Asset.class);

if(com.day.cq.dam.commons.util.DamUtil.isImage(asset)) {
    Log.debug("Found and image at: {}", asset.getPath())
}

score 0 · Accepted Answer · answered Sep 16 '15 at 16:41

0

Images stored in the DAM should have jcr:primaryType=dam:Asset. That said, you should be able to check these properties:

jcr:content
    jcr:primaryType=cq:PageContent
    cq:template=/apps/yourApp/yourTemplate

An image won't have a jcr:content/cq:template property, and it won't have a jcr:content/jcr:primaryType property that equals cq:PageContent.

Those properties exist under the jcr:content node. Try hitting two sample urls--one for the image, and one for the regular page--but add ".infinity.json" to the end of the URL. That will show you the properties of each so you can find things to help you filter out the images.

answered Sep 16 '15 at 16:41

Shawn

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This got me onto the right path. We're giving different "sling:resourceType" attributes at least for different types of content, and I saw this in the json. – Jene Sep 18 '15 at 08:00
com.adobe.granite.asset.core.impl.AssetUtils.isAsset(yourResource) is a handy method for checking that your resource type is the appropriate dam:Asset as explained by Shawn. – CFJ90210 Dec 08 '15 at 21:37

score 0 · Answer 3 · answered Sep 16 '15 at 17:51

0

If both have jcr:primaryType=cq:Page, then you might want to reconsider the way you are structuring your application. The image should be loaded from DAM, or, anywhere it is, it should have the jcr:primaryType= dam:Asset and this dam:Asset node will have a jcr:content of type= dam:AssetContent , which will contain metadata node and this metadata node will have a property of dc:format, which will inform you about the file type..

answered Sep 16 '15 at 17:51

anubhs

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I didn't design the application nor am I maintaining the content. I can guarantee that images don't "jcr:primaryType= dam:Asset" because wouldn't that just make my life easy – Jene Sep 17 '15 at 08:11

Sling: Find out if resource is an image

3 Answers3