Created
April 4, 2019 18:19
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ResourceTree iterate all resources in a tree
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import java.util.stream.Stream; | |
import java.util.stream.StreamSupport; | |
import org.apache.sling.api.resource.Resource; | |
public class ResourceTree { | |
private Resource root; | |
public static Stream<ResourceTree> stream(Resource resource) { | |
return new ResourceTree(resource).streamTree(); | |
} | |
public static Stream<ResourceTree> stream(Resource resource, String filterType) { | |
return new ResourceTree(resource).streamTree(filterType); | |
} | |
private ResourceTree(Resource root) { | |
this.root = root; | |
} | |
public Resource getResource() { | |
return root; | |
} | |
private Stream<ResourceTree> streamTree() { | |
return Stream.concat(Stream.of(this), StreamSupport.stream(root.getChildren().spliterator(), false) | |
.map(ResourceTree::new).flatMap(ResourceTree::streamTree)); | |
} | |
private Stream<ResourceTree> streamTree(String filterType) { | |
return Stream.concat(Stream.of(this), | |
StreamSupport.stream(root.getChildren().spliterator(), false) | |
.filter(c -> filterType.equals(c.getResourceType())).map(ResourceTree::new) | |
.flatMap(rt -> rt.streamTree(filterType))); | |
} | |
} | |
/* | |
Usage | |
for example to find all of the includes in a dialog: | |
ResourceTree.stream(dialog).map(ResourceTree::getResource) | |
.filter(r -> r.getResourceType().equals("granite/ui/components/coral/foundation/include")) | |
.map(i -> component.getResourceResolver().getResource(i.getValueMap().get("path", ""))) | |
.forEach(r -> addDialogFields(r, fields)); | |
*/ |
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