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 (!(dso instanceof Collection))
                  return null;
  
              collection = (Collection) dso;
  
              DSpaceValidity validity = new DSpaceValidity();
              
              // Add the actual collection;
              validity.add(collection);
  
              // add reciently submitted items
              for(BrowseItem item : getRecientlySubmittedIems(collection))
              {
                  validity.add(item);
              }
              
              this.validity = validity.complete();
          }
          catch (Exception e)
          {
              // Just ignore all errors and return an invalid cache.
          }

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    {
        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]);
                    }
                }


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

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    {
        if (this.validity == null)
        {
            try
            {
                DSpaceValidity validity = new FeedValidity();
                
                Context context = ContextUtil.obtainContext(objectModel);


                DSpaceObject dso = null;
                
                if (handle != null && !handle.contains("site"))
                {
                    dso = HandleManager.resolveToObject(context, handle);
                }
                
                validity.add(dso);
                
                // add recently submitted items
                for(Item item : getRecentlySubmittedItems(context,dso))
                {
                    validity.add(item);
                }


                this.validity = validity.complete();
            }
            catch (RuntimeException e)
            {
                throw e;
            }

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


                if (dso != null)
                {
                    newValidity.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())
                    {
                        newValidity.add(item);
                    }
                }
                else
                {
                    // Add the metadata to the validity
                    for (String[] singleEntry : browseInfo.getStringResults())
                    {
                        newValidity.add(singleEntry[0]+"#"+singleEntry[1]);
                    }
                }


                validity = newValidity;
            }

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      {
        // 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.
            }

View Full Code Here

      {
        // 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.
            }

View Full Code Here

      {
        // 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);
                }


                    DSpaceObject dso = HandleUtil.obtainHandle(objectModel);
                    if(dso != null)
                    {
                        validity.add(dso);
                    }


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

View Full Code Here

      {
        // 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.
            }

View Full Code Here

                    return null;
                }
  
              Collection collection = (Collection) dso;
  
              DSpaceValidity validity = new DSpaceValidity();
              
              // Add the actual collection;
              validity.add(collection);
              
              // Add the eperson viewing the collection
              validity.add(eperson);
              
              // Include any groups they are a member of
              Group[] groups = Group.allMemberGroups(context, eperson);
              for (Group group : groups)
              {
                validity.add(group);
              }
              
              this.validity = validity.complete();
          }
          catch (Exception e)
          {
              // Just ignore all errors and return an invalid cache.
          }

View Full Code Here

                    return null;
                }


              community = (Community) dso;


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


              // Recently submitted items
              for (BrowseItem item : getRecentlySubmittedItems(community))
              {
                  validity.add(item);
              }


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

View Full Code Here

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