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[AEM 6.4] InheritanceValueMap having stuck to retrieve child nodes (multifield items)

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Level 2

When I develop content page inheritance, I didn't get values of multifield (save by nodes).

The InheritanceValueMap only get component data (title field), doesn't get child nodes data (items node).

Screen Shot 2018-06-06 at 3.14.22 PM.png

Screen Shot 2018-06-06 at 3.13.59 PM.png

Any suggestions or ideas on this?

Thanks,

Canh Nguyen,

8 Replies

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Level 10

How are you trying to read items0, item1, etc

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Level 2

smacdonald2008

If I don't get inheritance properties, I use @ChildResource(name = "items").
When I get inherit properties, I think 'items' properties like JSON array and include in 'listoflinks' node.
I think I need to custom multifield save by JSON array.

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Level 2

Yep, I try to code that.
I have a problem when I get inheritance properties of multifield.
InheritanceValueMap doesn't get parent multifield property.

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Employee Advisor

The inheritanceValueMap is just looking up the hierachy, it is not taking child nodes of ancestors into consideration.

Jörg

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Level 2

smacdonald2008

My approach is I get component resource by resourceType after I get InheritanceValueMap of the component. I have a problem when I get InheritanceValueMap, I don't get child node properties.

I think if multifield save by JSON array, I can get the inheritance of multifield properties.

@Model(adaptables = { SlingHttpServletRequest.class, Resource.class }, adapters = { FooterModel.class,

ComponentExporter.class }, defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL, resourceType = FooterModelImpl.RESOURCE_TYPE)

@Exporters({

@Exporter(name = ExporterConstants.SLING_MODEL_EXPORTER_NAME, extensions = ExporterConstants.SLING_MODEL_EXTENSION) })

public class FooterModelImpl implements FooterModel {

     protected static final String RESOURCE_TYPE = "myproject/components/structure/footer/v1/footer";

     protected static final String COLUMN_RESOURCE_TYPE = "myproject/components/content/column/v1/column";

     protected static final String LIST_OF_LINKS_RESOURCE_TYPE = "myproject/components/content/listOfLinks/v1/listOfLinks";

     @Self

     private SlingHttpServletRequest request;

     @SlingObject

     private ResourceResolver resourceResolver;

     @SlingObject

     private Resource resource;

     private String hello;

     private Map<String, Object> map;

     @PostConstruct

     private void initModel() {

          hello = "Hello Footer";

          map = new HashMap<>();

          Iterator<Resource> columnResourceIterator = getListResourceByResourceType(resource.getPath(),

          COLUMN_RESOURCE_TYPE, resourceResolver);

          if (columnResourceIterator != null) {

               while (columnResourceIterator.hasNext()) {

                    Resource columnItemResource = columnResourceIterator.next();

                    if (columnItemResource != null) {

                         map.put(columnItemResource.getName(), getListOfLinksContent(columnItemResource));

                    }

               }

          }

     }

     private Map<String, Object> getListOfLinksContent(Resource columnResource) {

          Map<String, Object> map = new HashMap<>();

          Iterator<Resource> listOfLinksResources = getListOfLinksResources(columnResource.getPath());

          List<ListOfLinks> list = new ArrayList<>();

          while (listOfLinksResources.hasNext()) {

               Resource element = listOfLinksResources.next();

               ListOfLinks listOfLinks = getListOfLinksFromResource(element);

               list.add(listOfLinks);

          }

          map.put("listoflinks", list);

          return map;

     }

     private Iterator<Resource> getListOfLinksResources(String path) {

          return getListResourceByResourceType(path, LIST_OF_LINKS_RESOURCE_TYPE, resourceResolver);

     }

     private ListOfLinks getListOfLinksFromResource(Resource resource) {

          ListOfLinks listOfLinks = new ListOfLinks();

          InheritanceValueMap inheritanceMap = new HierarchyNodeInheritanceValueMap(resource);

          listOfLinks.setTitle(inheritanceMap.getInherited("title", StringUtils.EMPTY));

          listOfLinks.setNumberOrder(inheritanceMap.getInherited("order", StringUtils.EMPTY));

          listOfLinks.setLinks(getListLinkFromIteratorResource(getIteratorResourceFromResource(resource)));

          return listOfLinks;

     }

     private Iterator<Resource> getIteratorResourceFromResource(Resource resource) {

          // Save data to JSON array

          Resource items = resource.getResourceResolver().getResource(resource.getPath() + "/items");

          return items != null ? items.listChildren() : null;

     }

     private List<Link> getListLinkFromIteratorResource(Iterator<Resource> iterator) {

          List<Link> links = new ArrayList<>();

          while (iterator.hasNext()) {

               Resource linkResource = iterator.next();

               Link link = getLinkFromResource(linkResource);

               links.add(link);

          }

          return links;

     }

     private Link getLinkFromResource(Resource resource) {

          InheritanceValueMap inheritanceMap = new HierarchyNodeInheritanceValueMap(resource);

          return new Link(inheritanceMap.getInherited("label", StringUtils.EMPTY),

               inheritanceMap.getInherited("url", StringUtils.EMPTY));

     }

     private static Iterator<Resource> getListResourceByResourceType(String path, String resourceType,

          ResourceResolver resolver) {

          if (resolver == null) {

               return null;

          }

          String sql = "SELECT * FROM [nt:unstructured] AS s WHERE ISDESCENDANTNODE([" + path + "]) "

               + "AND s.[sling:resourceType] = '" + resourceType + "'";

          return resolver.findResources(sql, Query.JCR_SQL2);

     }

     public String getHello() {

          return hello;

     }

     public Map<String, Object> getItems() {

          return map;

     }

     class ListOfLinks {

          private String title;

          private String numberOrder;

          private List<Link> links;

          public String getTitle() {

               return title;

          }

          public void setTitle(String title) {

               this.title = title;

          }

          public String getNumberOrder() {

               return numberOrder;

          }

          public void setNumberOrder(String numberOrder) {

               this.numberOrder = numberOrder;

          }

          public List<Link> getLinks() {

               return links;

          }

          public void setLinks(List<Link> links) {

               this.links = links;

          }

     }

     class Link {

          private String label;

          private String url;

          public Link(String label, String url) {

               this.label = label;

               this.url = url;

          }

          public String getLabel() {

               return label;

          }

          public void setLabel(String label) {

               this.label = label;

          }

          public String getUrl() {

               return url;

          }

          public void setUrl(String url) {

               this.url = url;

          }

     }

}

Avatar

Level 10

Look at Joergs response. If you want to read child nodes - look at using the JCR API to read them.