Examples of org.dspace.app.xmlui.utils.DSpaceValidity

org.dspace.app.xmlui.utils.DSpaceValidity
This is a validity object specifically implemented for the caching needs of DSpace, Manakin, and Cocoon. The basic idea is that each time a DSpace object rendered by a cocoon component the object and everything about it that makes it unique should be reflected in the validity object for the component. By following this principle if the object has been updated externally then the cache will be invalidated. This DSpaceValidity object makes this processes easier by abstracting out the processes of determining what is unique about a DSpace object. A class is expected to create a new DSpaceValidity object and add() to it all DSpaceObjects that are rendered by the component. This validity object will serialize all those objects to a string, take a hash of the string and compare the hash of the string for any updates. @author Scott Phillips

    {
        if (validity == null)
        {
            try
            {
                DSpaceValidity validity = new DSpaceValidity();
                DSpaceObject dso = HandleUtil.obtainHandle(objectModel);


                if (dso != null)
                    validity.add(dso);


                BrowseInfo info = getBrowseInfo();


                // Are we browsing items, or unique metadata?
                if (isItemBrowse(info))
                {
                    // Add the browse items to the validity
                    for (BrowseItem item : (java.util.List<BrowseItem>) info.getResults())
                    {
                        validity.add(item);
                    }
                }
                else
                {
                    // Add the metadata to the validity
                    for (String[] singleEntry : browseInfo.getStringResults())
                    {
                        validity.add(singleEntry[0]+"#"+singleEntry[1]);
                    }
                }
            }
            catch (Exception e)
            {

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                        analysisFile = StatisticsLoader.getGeneralAnalysis();


                    if (analysisFile != null)
                    {
                        // Generate the validity based on the properties of the report data file
                        DSpaceValidity newValidity = new DSpaceValidity();
                        newValidity.add(Long.toString(analysisFile.lastModified()));
                        newValidity.add("-");
                        newValidity.add(Long.toString(analysisFile.length()));
                        validity = newValidity.complete();
                    }
                }
            }
            catch (Exception e)
            {

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  public SourceValidity getValidity() {
    if (this.validity == null) {
      // Only use the DSpaceValidity object is someone is logged in.
      if (context.getCurrentUser() != null) {
        try {
          DSpaceValidity validity = new DSpaceValidity();


          validity.add(eperson);


          Group[] groups = Group.allMemberGroups(context, eperson);
          for (Group group : groups) {
            validity.add(group);
          }


          this.validity = validity.complete();
        } catch (SQLException sqle) {
          // Just ignore it and return invalid.
        }
      } else {
        this.validity = NOPValidity.SHARED_INSTANCE;

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            try {
                DSpaceObject dso = HandleUtil.obtainHandle(objectModel);




                DSpaceValidity val = new DSpaceValidity();


                // add reciently submitted items, serialize solr query contents.
                performSearch(dso);


                // Add the actual collection;
                if (dso != null)
                    val.add(dso);


                val.add("numFound:" + queryResults.getResults().getNumFound());


                for (SolrDocument doc : queryResults.getResults()) {
                    val.add(doc.toString());
                }


//                for (SolrDocument doc : queryResults.getResults()) {
//                    val.add(doc.toString());
//                }


                for (FacetField field : queryResults.getFacetFields()) {
                    val.add(field.getName());


                    for (FacetField.Count count : field.getValues()) {
                        val.add(count.getName() + count.getCount());
                    }
                }




                this.validity = val.complete();
            }
            catch (Exception e) {
                log.error(e.getMessage(),e);
            }

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              if (!(dso instanceof Collection))
                  return null;
  
              collection = (Collection) dso;
  
              DSpaceValidity validity = new DSpaceValidity();
              
              // Add the actual collection;
              validity.add(collection);
              
              this.validity = validity.complete();
          }
          catch (Exception e)
          {
              // Just ignore all errors and return an invalid cache.
          }

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              if (!(dso instanceof Community))
                  return null;
              
              community = (Community) dso;
              
              DSpaceValidity validity = new DSpaceValidity();
              validity.add(community);
              
              Community[] subCommunities = community.getSubcommunities();
              Collection[] collections = community.getCollections();
              // Sub communities
              for (Community subCommunity : subCommunities)
              {
                  validity.add(subCommunity);
              }
              // Sub collections
              for (Collection collection : collections)
              {
                  validity.add(collection);
                }
              
              this.validity = validity.complete();


          } 
          catch (Exception e)
          {
              // Ignore all errors and invalidate the cache.

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    @Override
    public SourceValidity getValidity() {
        if (this.validity == null) {


            try {
                DSpaceValidity validity = new DSpaceValidity();


                DSpaceObject dso = HandleUtil.obtainHandle(objectModel);


                if (dso != null) {
                    // Add the actual collection;
                    validity.add(dso);
                }


                // add reciently submitted items, serialize solr query contents.
                QueryResponse response = getQueryResponse(dso);


                validity.add("numFound:" + response.getResults().getNumFound());


//                for (SolrDocument doc : response.getResults()) {
//                    validity.add(doc.toString());
//                }


                for (SolrDocument doc : response.getResults()) {
                    validity.add(doc.toString());
                }


                for (FacetField field : response.getFacetFields()) {
                    validity.add(field.getName());


                    for (FacetField.Count count : field.getValues()) {
                        validity.add(count.getName() + "#" + count.getCount());
                    }
                }




                this.validity = validity.complete();
            } catch (Exception e) {
                // Just ignore all errors and return an invalid cache.
            }


            //TODO: dependent on tags as well :)

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              if (!(dso instanceof Community))
                  return null;


              community = (Community) dso;


              DSpaceValidity validity = new DSpaceValidity();
              validity.add(community);


              Community[] subCommunities = community.getSubcommunities();
              Collection[] collections = community.getCollections();
              // Sub communities
              for (Community subCommunity : subCommunities)
              {
                  validity.add(subCommunity);
              }
              // Sub collections
              for (Collection collection : collections)
              {
                  validity.add(collection);
              }


              this.validity = validity.complete();
          }
          catch (Exception e)
          {
              // Ignore all errors and invalidate the cache.
          }

View Full Code Here

              if (!(dso instanceof Collection))
                  return null;


              collection = (Collection) dso;


              DSpaceValidity validity = new DSpaceValidity();


              // Add the actual collection;
              validity.add(collection);


              this.validity = validity.complete();
          }
          catch (Exception e)
          {
              // Just ignore all errors and return an invalid cache.
          }

View Full Code Here

        if (this.validity == null)
      {
          try {
              dso = HandleUtil.obtainHandle(objectModel);


              DSpaceValidity validity = new DSpaceValidity();
              validity.add(dso);
              this.validity =  validity.complete();
          }
          catch (Exception e)
          {
              // Ignore all errors and just invalidate the cache.
          }

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