Examples of org.dspace.content.Item

org.dspace.content.Item
Class representing an item in DSpace.
This class holds in memory the item Dublin Core metadata, the bundles in the item, and the bitstreams in those bundles. When modifying the item, if you modify the Dublin Core or the "in archive" flag, you must call update for the changes to be written to the database. Creating, adding or removing bundles or bitstreams has immediate effect in the database. @author Robert Tansley @author Martin Hald @version $Revision: 4644 $

    /**
     * @return true if this dissemination is available for the item.
     */
    public boolean isAvailableFor(Object nativeItem)
    {
        Item item = ((HarvestedItemInfo) nativeItem).item;
        return xwalk.canDisseminate(item);
    }

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     * Do the crosswalk.  Returns serialized XML in a string.
     */
    public String createMetadata(Object nativeItem)
            throws CannotDisseminateFormatException
    {
        Item item = ((HarvestedItemInfo) nativeItem).item;
        try
        {
            log.debug("OAI plugin, schema="+schemaLabel+", preferList="+String.valueOf(xwalk.preferList()));
            if (xwalk.preferList())
                return outputUgly.outputString(xwalk.disseminateList(item));

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      ProcessingException {
    try {
      // Grab the context.
      Context context = ContextUtil.obtainContext(objectModel);
      
      Item item = getItem(context);
            if (item == null)
              throw new ResourceNotFoundException("Unable to locate object.");
            
            
            // Instantiate and execute the ORE plugin

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             String type = parts[0];
             int id = Integer.valueOf(parts[1]);
             
             if ("item".equals(type))
             {
               Item item = Item.find(context,id);
               return item;
             }
             else
                 throw new CrosswalkException("ORE dissemination only available for DSpace Items.");

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    }


    public String createMetadata(Object nativeItem)
            throws CannotDisseminateFormatException
    {
        Item item = ((HarvestedItemInfo) nativeItem).item;


        StringBuffer metadata = new StringBuffer();


        metadata
                .append(
                        "<oai_dc:dc xmlns:oai_dc=\"http://www.openarchives.org/OAI/2.0/oai_dc/\" ")
                .append("xmlns:dc=\"http://purl.org/dc/elements/1.1/\" ")
                .append(
                        "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" ")
                .append(
                        "xsi:schemaLocation=\"http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd\">");


        for (String element : oaidcElement)
        {
            Set<String> itemMetadata = config.get(element);


            if (itemMetadata != null && itemMetadata.size() > 0)
            {
                for (String mdString : itemMetadata)
                {
                    String converterName = null;
                    IConverter converter = null;
                    Matcher converterMatcher = converterPattern.matcher(mdString);
                    if (converterMatcher.matches())
                    {
                        converterName = converterMatcher.group(1);
                        converter = (IConverter) PluginManager.getNamedPlugin(
                                IConverter.class, converterName);
                        if (converter == null)
                        {
                            log.warn(LogManager.getHeader(null,
                                    "createMetadata",
                                    "no converter plugin found with name "
                                            + converterName + " for metadata "
                                            + mdString));
                        }
                    }


                    DCValue[] dcValues;
                    if (converterName != null)
                    {
                        dcValues = item.getMetadata(mdString.replaceAll("\\("
                                + converterName + "\\)", ""));
                    }
                    else
                    {
                        dcValues = item.getMetadata(mdString);
                    }


                    try
                    {
                    for (DCValue dcValue : dcValues)

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            this.add(collection.getLogo());
            
        }
        else if (dso instanceof Item)
        {
            Item item = (Item) dso;
            
            validityKey.append("Item:");
            validityKey.append(item.getHandle());            
            validityKey.append(item.getOwningCollection());
            validityKey.append(item.getLastModified());
            // Include all metadata values in the validity key.
            DCValue[] dcvs = item.getDC(Item.ANY,Item.ANY,Item.ANY);
            for (DCValue dcv : dcvs)
            {
                validityKey.append(dcv.schema + ".");
                validityKey.append(dcv.element + ".");
                validityKey.append(dcv.qualifier + ".");
                validityKey.append(dcv.language + "=");
                validityKey.append(dcv.value);
            }
            
            for(Bundle bundle : item.getBundles())
            {
                // Add each of the items bundles & bitstreams.
                this.add(bundle);
            }
        }

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    {


        DSpaceObject dspaceObject = HandleUtil.obtainHandle(objectModel);
        if (!(dspaceObject instanceof Item))
            return;
        Item item = (Item) dspaceObject;


        try {
            performSearch(item);
        } catch (SearchServiceException e) {
            log.error(e.getMessage(),e);
        }


        // Build the collection viewer division.




        if (this.queryResults != null) {


            NamedList nList = this.queryResults.getResponse();


            SimpleOrderedMap<SolrDocumentList> mlt = (SimpleOrderedMap<SolrDocumentList>)nList.get("moreLikeThis");


            //home.addPara(nList.toString());
            
            if(mlt != null && 0 < mlt.size())
            {
                //TODO: also make sure if an item is unresolved we do not end up with an empty referenceset !
                List<DSpaceObject> dsos = new ArrayList<DSpaceObject>();
                for(Map.Entry<String,SolrDocumentList> entry : mlt)
                {
                    String key = entry.getKey();


                    //org.dspace.app.xmlui.wing.element.List mltList = mltDiv.addList(key);


                    //mltList.setHead(key);


                    for(SolrDocument doc : entry.getValue())
                    {
                        try{
                            dsos.add(SearchUtils.findDSpaceObject(context, doc));
                        }catch(Exception e){
                            log.error(LogManager.getHeader(context, "Error while resolving related item doc to dso", "Main item: " + item.getID()));
                        }
                        //mltList.addItem().addContent(doc.toString());
                    }

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        try
        {
//            Request request = ObjectModelHelper.getRequest(objectModel);
            DSpaceObject dso = HandleUtil.obtainHandle(objectModel);
            if (dso.getType() == Constants.ITEM) {
                Item item = (Item) dso;
                Bundle[] bundles = item.getBundles("ORIGINAL");
                for (Bundle bundle : bundles) {
//                    log.debug("bundle.name: " + bundle.getName());
//                    log.debug("bundle.priID: " + bundle.getPrimaryBitstreamID());
                    for (Bitstream bitstream : bundle.getBitstreams()) {
//                        log.debug("bitstream.name: " + bitstream.getName());

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        }


        try {
            switch (dso.getType()) {
                case Constants.ITEM:
                    Item item = (Item) dso;
                    if (item.isArchived() && !item.isWithdrawn()) {
                        /**
                         * If the item is in the repository now, add it to the index
                         */
                        if (requiresIndexing(handle, ((Item) dso).getLastModified())
                                || force) {

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    public void updateIndex(Context context, boolean force) {
        try {
            ItemIterator items = null;
            try {
                for (items = Item.findAll(context); items.hasNext();) {
                    Item item = (Item) items.next();
                    indexContent(context, item, force);
                    item.decache();
                }
            } finally {
                if (items != null) {
                    items.close();
                }

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