Examples of org.dspace.content.Bitstream

org.dspace.content.Bitstream
Class representing bitstreams stored in the DSpace system.
When modifying the bitstream metadata, changes are not reflected in the database until update is called. Note that you cannot alter the contents of a bitstream; you need to create a new bitstream. @author Robert Tansley @version $Revision: 4657 $

            throws ServletException, IOException, SQLException,
            AuthorizeException
    {
        // Wrap multipart request to get the submission info
        FileUploadRequest wrapper = new FileUploadRequest(request);
        Bitstream b = null;


        Item item = Item.find(context, UIUtil.getIntParameter(wrapper,
                "item_id"));


        File temp = wrapper.getFile("file");


        // Read the temp file as logo
        InputStream is = new BufferedInputStream(new FileInputStream(temp));


        // now check to see if person can edit item
        checkEditAuthorization(context, item);


        // do we already have an ORIGINAL bundle?
        Bundle[] bundles = item.getBundles("ORIGINAL");


        if (bundles.length < 1)
        {
            // set bundle's name to ORIGINAL
            b = item.createSingleBitstream(is, "ORIGINAL");
            
            // set the permission as defined in the owning collection
            Collection owningCollection = item.getOwningCollection();
            if (owningCollection != null)
            {
                Bundle bnd = b.getBundles()[0];
                bnd.inheritCollectionDefaultPolicies(owningCollection);
            }
        }
        else
        {
            // we have a bundle already, just add bitstream
            b = bundles[0].createBitstream(is);
        }


        // Strip all but the last filename. It would be nice
        // to know which OS the file came from.
        String noPath = wrapper.getFilesystemName("file");


        while (noPath.indexOf('/') > -1)
        {
            noPath = noPath.substring(noPath.indexOf('/') + 1);
        }


        while (noPath.indexOf('\\') > -1)
        {
            noPath = noPath.substring(noPath.indexOf('\\') + 1);
        }


        b.setName(noPath);
        b.setSource(wrapper.getFilesystemName("file"));


        // Identify the format
        BitstreamFormat bf = FormatIdentifier.guessFormat(context, b);
        b.setFormat(bf);
        b.update();


        item.update();


        // Back to edit form
        showEditForm(context, request, response, item);

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        if (bsid.endsWith("/"))
        {
          bsid = bsid.substring(0, url.length() - 1);
        }


        Bitstream bitstream = Bitstream.find(context, Integer.parseInt(bsid));
        return bitstream;
      }
      else
      {
        throw new SWORDErrorException(DSpaceSWORDErrorCodes.BAD_URL,

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    // Get our parameters
    int bitstreamID = parameters.getParameterAsInteger("bitstreamID",-1);


    // Get the bitstream and all the various formats
                // Administrator is allowed to see internal formats too.
    Bitstream bitstream = Bitstream.find(context, bitstreamID);
    BitstreamFormat currentFormat = bitstream.getFormat();
                BitstreamFormat[] bitstreamFormats = AuthorizeManager.isAdmin(context) ?
                    BitstreamFormat.findAll(context) :
                    BitstreamFormat.findNonInternal(context);
    
    boolean primaryBitstream = false;
    Bundle[] bundles = bitstream.getBundles();
    if (bundles != null && bundles.length > 0)
    {
      if (bitstreamID == bundles[0].getPrimaryBitstreamID())
      {
        primaryBitstream = true;
      }
    }


    // File name & url
    String fileUrl = contextPath + "/bitstream/id/" +bitstream.getID() + "/" + bitstream.getName();
    String fileName = bitstream.getName();








    // DIVISION: main
    Division div = body.addInteractiveDivision("edit-bitstream", contextPath+"/admin/item", Division.METHOD_MULTIPART, "primary administrative item");      
    div.setHead(T_head1);




    // LIST: edit form
    List edit = div.addList("edit-bitstream-list", List.TYPE_FORM);


    edit.addLabel(T_file_label);
    edit.addItem().addXref(fileUrl, fileName);


    
    Select primarySelect = edit.addItem().addSelect("primary");
    primarySelect.setLabel(T_primary_label);
    primarySelect.addOption(primaryBitstream,"yes",T_primary_option_yes);
    primarySelect.addOption(!primaryBitstream,"no",T_primary_option_no);
    
    Text description = edit.addItem().addText("description");
    description.setLabel(T_description_label);
    description.setHelp(T_description_help);
    description.setValue(bitstream.getDescription());


    edit.addItem(T_para1);


    // System supported formats
    Select format = edit.addItem().addSelect("formatID");
    format.setLabel(T_format_label);


                // load the options menu, skipping the "Unknown" format since "Not on list" takes its place
                int unknownFormatID = BitstreamFormat.findUnknown(context).getID();
    format.addOption(-1,T_format_default);
    for (BitstreamFormat bitstreamFormat : bitstreamFormats)
    {
                        if (bitstreamFormat.getID() == unknownFormatID)
                            continue;
      String supportLevel = "Unknown";
      if (bitstreamFormat.getSupportLevel() == BitstreamFormat.KNOWN)
        supportLevel = "known";
      else if (bitstreamFormat.getSupportLevel() == BitstreamFormat.SUPPORTED)
        supportLevel = "Supported";
      String name = bitstreamFormat.getShortDescription()+" ("+supportLevel+")";
                        if (bitstreamFormat.isInternal())
                            name += " (Internal)";
      int id = bitstreamFormat.getID();


      format.addOption(id,name);
    }
    if (currentFormat != null)
    {
      format.setOptionSelected(currentFormat.getID());
    }
    else
    {
      format.setOptionSelected(-1);
    }


    edit.addItem(T_para2);


    // User supplied format
    Text userFormat = edit.addItem().addText("user_format");
    userFormat.setLabel(T_user_label);
    userFormat.setHelp(T_user_help);
    userFormat.setValue(bitstream.getUserFormatDescription());








    // ITEM: form actions

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        File temp = wrapper.getFile("file");


        // Read the temp file as logo
        InputStream is = new BufferedInputStream(new FileInputStream(temp));
        Bitstream logoBS;


        if (collection == null)
        {
            logoBS = community.setLogo(is);
        }
        else
        {
            logoBS = collection.setLogo(is);
        }


        // Strip all but the last filename. It would be nice
        // to know which OS the file came from.
        String noPath = wrapper.getFilesystemName("file");


        while (noPath.indexOf('/') > -1)
        {
            noPath = noPath.substring(noPath.indexOf('/') + 1);
        }


        while (noPath.indexOf('\\') > -1)
        {
            noPath = noPath.substring(noPath.indexOf('\\') + 1);
        }


        logoBS.setName(noPath);
        logoBS.setSource(wrapper.getFilesystemName("file"));


        // Identify the format
        BitstreamFormat bf = FormatIdentifier.guessFormat(context, logoBS);
        logoBS.setFormat(bf);
        AuthorizeManager.addPolicy(context, logoBS, Constants.WRITE, context
                .getCurrentUser());
        logoBS.update();


        String jsp;
        DSpaceObject dso;
        if (collection == null)
        {

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      //  modify the policy
      policy.setAction(actionID);
      policy.setGroup(group);
        
      // propagate the changes to the logo, which is treated on the same level as the parent object
      Bitstream logo = null;
      DSpaceObject logoContainer = null;
      if (objectType == Constants.COLLECTION)
      {
        logoContainer = Collection.find(context, objectID);
          logo = ((Collection)logoContainer).getLogo();

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        break;
      }
      // Now find our dso
      DSpaceObject dso = DSpaceObject.find(context, type, dsoId);
      if (dso instanceof Bitstream) {
        Bitstream bit = (Bitstream) dso;
        if (bit.getFormat().isInternal()) {
          dso = null;
        }
      }
      // Make sure we got a dso
      boolean substract = false;
      while (dso == null) {
        // If our dsoId gets higher then our maxIdtotal we need to lower
        // to find a valid id
        if (dsoId == maxIdTotal)
          substract = true;


        if (substract)
          dsoId--;
        else
          dsoId++;


        dso = DSpaceObject.find(context, type, dsoId);
        if (dso instanceof Bitstream) {
          Bitstream bit = (Bitstream) dso;
          if (bit.getFormat().isInternal()) {
            dso = null;
          }
        }
        // System.out.println("REFIND");
      }

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      {
        original = item.createBundle("ORIGINAL");
      }


      InputStream is = deposit.getFile();
      Bitstream bs = original.createBitstream(is);


      String fn = swordService.getFilename(context, deposit, false);
      bs.setName(fn);


      swordService.message("File created in item with filename " + fn);


      BitstreamFormat bf = BitstreamFormat.findByMIMEType(context, deposit.getContentType());
      if (bf != null)
      {
        bs.setFormat(bf);
      }


      // to do the updates, we need to ignore authorisation in the context
      boolean ignoreAuth = context.ignoreAuthorization();
      context.setIgnoreAuthorization(true);


      bs.update();
      original.update();
      item.update();


      // reset the ignore authorisation
      context.setIgnoreAuthorization(ignoreAuth);

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    protected void doDSGet(Context context, HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException,
            SQLException, AuthorizeException
    {
        Bitstream bitstream = null;


        // Get the ID from the URL
        String idString = request.getPathInfo();


        if (idString != null)
        {
            // Remove leading slash
            if (idString.startsWith("/"))
            {
                idString = idString.substring(1);
            }


            // If there's a second slash, remove it and anything after it,
            // it might be a filename
            int slashIndex = idString.indexOf('/');


            if (slashIndex != -1)
            {
                idString = idString.substring(0, slashIndex);
            }


            // Find the corresponding bitstream
            try
            {
                int id = Integer.parseInt(idString);
                bitstream = Bitstream.find(context, id);
            }
            catch (NumberFormatException nfe)
            {
                // Invalid ID - this will be dealt with below
            }
        }


        // Did we get a bitstream?
        if (bitstream != null)
        {
            log.info(LogManager.getHeader(context, "view_bitstream",
                    "bitstream_id=" + bitstream.getID()));


            new DSpace().getEventService().fireEvent(
                new UsageEvent(
                    UsageEvent.Action.VIEW,
                    request, 
                    context, 
                    bitstream));
            
            //UsageEvent ue = new UsageEvent();
           // ue.fire(request, context, AbstractUsageEvent.VIEW,
       //Constants.BITSTREAM, bitstream.getID());


            // Pipe the bits
            InputStream is = bitstream.retrieve();


            // Set the response MIME type
            response.setContentType(bitstream.getFormat().getMIMEType());


            // Response length
            response.setHeader("Content-Length", String.valueOf(bitstream
                    .getSize()));


            Utils.bufferedCopy(is, response.getOutputStream());
            is.close();
            response.getOutputStream().flush();

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        else if (button.equals("submit_bitstream_add_policy"))
        {
            // want to add a policy, create an empty one and invoke editor
            Item item = Item
                    .find(c, UIUtil.getIntParameter(request, "item_id"));
            Bitstream bitstream = Bitstream.find(c, UIUtil.getIntParameter(
                    request, "bitstream_id"));


            AuthorizeUtil.authorizeManageBitstreamPolicy(c, bitstream);
            ResourcePolicy policy = ResourcePolicy.create(c);
            policy.setResource(bitstream);
            policy.update();


            Group[] groups = Group.findAll(c, Group.NAME);
            EPerson[] epeople = EPerson.findAll(c, EPerson.EMAIL);


            // return to item permission page
            request.setAttribute("edit_title", "(Item,Bitstream) = ("
                    + item.getID() + "," + bitstream.getID() + ")");
            request.setAttribute("policy", policy);
            request.setAttribute("groups", groups);
            request.setAttribute("epeople", epeople);
            request.setAttribute("id_name", "item_id");
            request.setAttribute("id", "" + item.getID());
            request.setAttribute("newpolicy", "true");


            JSPManager.showJSP(request, response,
                    "/dspace-admin/authorize-policy-edit.jsp");
        }
        else if (button.equals("submit_item_delete_policy"))
        {
            // delete a permission from an item
            Item item = Item
                    .find(c, UIUtil.getIntParameter(request, "item_id"));
            
            AuthorizeUtil.authorizeManageItemPolicy(c, item);
            ResourcePolicy policy = ResourcePolicy.find(c, UIUtil
                    .getIntParameter(request, "policy_id"));


            // do the remove
            policy.delete();


            // show edit form!
            prepItemEditForm(c, request, item);


            JSPManager.showJSP(request, response,
                    "/dspace-admin/authorize-item-edit.jsp");
        }
        // COLLECTIONS ////////////////////////////////////////////////////////
        else if (button.equals("submit_collection_add_policy"))
        {
            // want to add a policy, create an empty one and invoke editor
            Collection collection = Collection.find(c, UIUtil.getIntParameter(
                    request, "collection_id"));


            AuthorizeUtil.authorizeManageCollectionPolicy(c, collection);
            ResourcePolicy policy = ResourcePolicy.create(c);
            policy.setResource(collection);
            policy.update();


            Group[] groups = Group.findAll(c, Group.NAME);
            EPerson[] epeople = EPerson.findAll(c, EPerson.EMAIL);


            // return to collection permission page
            request.setAttribute("edit_title", "Collection "
                    + collection.getID());
            request.setAttribute("policy", policy);
            request.setAttribute("groups", groups);
            request.setAttribute("epeople", epeople);
            request.setAttribute("id_name", "collection_id");
            request.setAttribute("id", "" + collection.getID());
            request.setAttribute("newpolicy", "true");


            JSPManager.showJSP(request, response,
                    "/dspace-admin/authorize-policy-edit.jsp");
        }
        else if (button.equals("submit_community_select"))
        {
            // edit the collection's permissions
            Community target = Community.find(c, UIUtil.getIntParameter(
                    request, "community_id"));
            List policies = AuthorizeManager.getPolicies(c, target);


            request.setAttribute("community", target);
            request.setAttribute("policies", policies);
            JSPManager.showJSP(request, response,
                    "/dspace-admin/authorize-community-edit.jsp");
        }
        else if (button.equals("submit_collection_delete_policy"))
        {
            // delete a permission from a collection
            Collection collection = Collection.find(c, UIUtil.getIntParameter(
                    request, "collection_id"));
            
            AuthorizeUtil.authorizeManageCollectionPolicy(c, collection);
            ResourcePolicy policy = ResourcePolicy.find(c, UIUtil
                    .getIntParameter(request, "policy_id"));


            // do the remove
            policy.delete();


            // return to collection permission page
            request.setAttribute("collection", collection);


            List policies = AuthorizeManager.getPolicies(c, collection);
            request.setAttribute("policies", policies);


            JSPManager.showJSP(request, response,
                    "/dspace-admin/authorize-collection-edit.jsp");
        }
        else if (button.equals("submit_community_delete_policy"))
        {
            // delete a permission from a community
            Community community = Community.find(c, UIUtil.getIntParameter(
                    request, "community_id"));
            
            AuthorizeUtil.authorizeManageCommunityPolicy(c, community);
            ResourcePolicy policy = ResourcePolicy.find(c, UIUtil
                    .getIntParameter(request, "policy_id"));


            // do the remove
            policy.delete();


            // return to collection permission page
            request.setAttribute("community", community);


            List policies = AuthorizeManager.getPolicies(c, community);
            request.setAttribute("policies", policies);


            JSPManager.showJSP(request, response,
                    "/dspace-admin/authorize-community-edit.jsp");
        }
        else if (button.equals("submit_collection_edit_policy"))
        {
            // edit a collection's policy - set up and call policy editor
            Collection collection = Collection.find(c, UIUtil.getIntParameter(
                    request, "collection_id"));


            AuthorizeUtil.authorizeManageCollectionPolicy(c, collection);
            int policy_id = UIUtil.getIntParameter(request, "policy_id");
            ResourcePolicy policy = null;


            if (policy_id == -1)
            {
                // create new policy
                policy = ResourcePolicy.create(c);
                policy.setResource(collection);
                policy.update();
            }
            else
            {
                policy = ResourcePolicy.find(c, policy_id);
            }


            Group[] groups = Group.findAll(c, Group.NAME);
            EPerson[] epeople = EPerson.findAll(c, EPerson.EMAIL);


            // return to collection permission page
            request.setAttribute("edit_title", "Collection "
                    + collection.getID());
            request.setAttribute("policy", policy);
            request.setAttribute("groups", groups);
            request.setAttribute("epeople", epeople);
            request.setAttribute("id_name", "collection_id");
            request.setAttribute("id", "" + collection.getID());
            JSPManager.showJSP(request, response,
                    "/dspace-admin/authorize-policy-edit.jsp");
        }
        else if (button.equals("submit_community_edit_policy"))
        {
            // edit a community's policy - set up and call policy editor
            Community community = Community.find(c, UIUtil.getIntParameter(
                    request, "community_id"));
            
            AuthorizeUtil.authorizeManageCommunityPolicy(c, community);


            int policy_id = UIUtil.getIntParameter(request, "policy_id");
            ResourcePolicy policy = null;


            if (policy_id == -1)
            {
                // create new policy
                policy = ResourcePolicy.create(c);
                policy.setResource(community);
                policy.update();
            }
            else
            {
                policy = ResourcePolicy.find(c, policy_id);
            }


            Group[] groups = Group.findAll(c, Group.NAME);
            EPerson[] epeople = EPerson.findAll(c, EPerson.EMAIL);


            // return to collection permission page
            request
                    .setAttribute("edit_title", "Community "
                            + community.getID());
            request.setAttribute("policy", policy);
            request.setAttribute("groups", groups);
            request.setAttribute("epeople", epeople);
            request.setAttribute("id_name", "community_id");
            request.setAttribute("id", "" + community.getID());
            JSPManager.showJSP(request, response,
                    "/dspace-admin/authorize-policy-edit.jsp");
        }
        else if (button.equals("submit_collection_add_policy"))
        {
            // want to add a policy, create an empty one and invoke editor
            Collection collection = Collection.find(c, UIUtil.getIntParameter(
                    request, "collection_id"));


            AuthorizeUtil.authorizeManageCollectionPolicy(c, collection);
            ResourcePolicy policy = ResourcePolicy.create(c);
            policy.setResource(collection);
            policy.update();


            Group[] groups = Group.findAll(c, Group.NAME);
            EPerson[] epeople = EPerson.findAll(c, EPerson.EMAIL);


            // return to collection permission page
            request.setAttribute("edit_title", "Collection "
                    + collection.getID());
            request.setAttribute("policy", policy);
            request.setAttribute("groups", groups);
            request.setAttribute("epeople", epeople);
            request.setAttribute("id_name", "collection_id");
            request.setAttribute("id", "" + collection.getID());
            request.setAttribute("newpolicy", "true");


            JSPManager.showJSP(request, response,
                    "/dspace-admin/authorize-policy-edit.jsp");
        }
        else if (button.equals("submit_community_add_policy"))
        {
            // want to add a policy, create an empty one and invoke editor
            Community community = Community.find(c, UIUtil.getIntParameter(
                    request, "community_id"));


            AuthorizeUtil.authorizeManageCommunityPolicy(c, community);
            ResourcePolicy policy = ResourcePolicy.create(c);
            policy.setResource(community);
            policy.update();


            Group[] groups = Group.findAll(c, Group.NAME);
            EPerson[] epeople = EPerson.findAll(c, EPerson.EMAIL);


            // return to collection permission page
            request
                    .setAttribute("edit_title", "Community "
                            + community.getID());
            request.setAttribute("policy", policy);
            request.setAttribute("groups", groups);
            request.setAttribute("epeople", epeople);
            request.setAttribute("id_name", "community_id");
            request.setAttribute("id", "" + community.getID());
            request.setAttribute("newpolicy", "true");


            JSPManager.showJSP(request, response,
                    "/dspace-admin/authorize-policy-edit.jsp");
        }
        else if (button.equals("submit_save_policy"))
        {
            int policy_id = UIUtil.getIntParameter(request, "policy_id");
            int action_id = UIUtil.getIntParameter(request, "action_id");
            int group_id = UIUtil.getIntParameter(request, "group_id");
            int collection_id = UIUtil
                    .getIntParameter(request, "collection_id");
            int community_id = UIUtil.getIntParameter(request, "community_id");
            int item_id = UIUtil.getIntParameter(request, "item_id");


            Item item = null;
            Collection collection = null;
            Community community = null;
            String display_page = null;


            ResourcePolicy policy = ResourcePolicy.find(c, policy_id);
            AuthorizeUtil.authorizeManagePolicy(c, policy);
            Group group = Group.find(c, group_id);


            if (collection_id != -1)
            {
                collection = Collection.find(c, collection_id);


                // modify the policy
                policy.setAction(action_id);
                policy.setGroup(group);
                policy.update();


                // if it is a read, policy, modify the logo policy to match
                if (action_id == Constants.READ)
                {
                    // first get a list of READ policies from collection
                    List rps = AuthorizeManager.getPoliciesActionFilter(c,
                            collection, Constants.READ);


                    // remove all bitstream policies, then add READs
                    Bitstream bs = collection.getLogo();


                    if (bs != null)
                    {
                        AuthorizeManager.removeAllPolicies(c, bs);
                        AuthorizeManager.addPolicies(c, rps, bs);
                    }
                }


                // set up page attributes
                request.setAttribute("collection", collection);
                request.setAttribute("policies", AuthorizeManager.getPolicies(
                        c, collection));
                display_page = "/dspace-admin/authorize-collection-edit.jsp";
            }
            else if (community_id != -1)
            {
                community = Community.find(c, community_id);


                // modify the policy
                policy.setAction(action_id);
                policy.setGroup(group);
                policy.update();


                // if it is a read, policy, modify the logo policy to match
                if (action_id == Constants.READ)
                {
                    // first get a list of READ policies from collection
                    List rps = AuthorizeManager.getPoliciesActionFilter(c,
                            community, Constants.READ);


                    // remove all bitstream policies, then add READs
                    Bitstream bs = community.getLogo();


                    if (bs != null)
                    {
                        AuthorizeManager.removeAllPolicies(c, bs);
                        AuthorizeManager.addPolicies(c, rps, bs);

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            // go through all bundle's bitstreams, add to bitstream map
            Bitstream[] bitstreams = myBundle.getBitstreams();


            for (int j = 0; j < bitstreams.length; j++)
            {
                Bitstream myBitstream = bitstreams[j];
                myPolicies = AuthorizeManager.getPolicies(c, myBitstream);
                bitstream_policies.put(new Integer(myBitstream.getID()),
                        myPolicies);
            }
        }


        request.setAttribute("item", item);

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Related Classes of org.dspace.content.Bitstream

org.dspace.app.dav.DAVBitstream

org.dspace.app.dav.DAVCollection

org.dspace.app.dav.DAVCommunity

org.dspace.app.dav.DAVDSpaceObject

org.dspace.app.dav.DAVItem

org.dspace.app.itemexport.ItemExport

org.dspace.app.itemimport.ItemImport

org.dspace.app.itemmarking.ItemMarkingAvailabilityBitstreamStrategy

org.dspace.app.itemupdate.AddBitstreamsAction

org.dspace.app.itemupdate.DeleteBitstreamsAction

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