/**
* The contents of this file are subject to the license and copyright
* detailed in the LICENSE and NOTICE files at the root of the source
* tree and available online at
*
* http://www.dspace.org/license/
*/
package org.dspace.app.webui.servlet.admin;
import org.apache.log4j.Logger;
import org.dspace.app.webui.servlet.DSpaceServlet;
import org.dspace.app.webui.util.JSPManager;
import org.dspace.app.webui.util.UIUtil;
import org.dspace.authorize.AuthorizeException;
import org.dspace.authorize.AuthorizeManager;
import org.dspace.browse.*;
import org.dspace.content.Collection;
import org.dspace.content.Item;
import org.dspace.content.ItemIterator;
import org.dspace.core.ConfigurationManager;
import org.dspace.core.Constants;
import org.dspace.core.Context;
import org.dspace.sort.SortOption;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map;
/**
* Servlet for editing and deleting (expunging) items
*
* @version $Revision$
*/
public class ItemMapServlet extends DSpaceServlet
{
/** Logger */
private static Logger log = Logger.getLogger(ItemMapServlet.class);
protected void doDSGet(Context context, HttpServletRequest request,
HttpServletResponse response) throws java.sql.SQLException,
javax.servlet.ServletException, java.io.IOException,
AuthorizeException
{
doDSPost(context, request, response);
}
protected void doDSPost(Context context, HttpServletRequest request,
HttpServletResponse response) throws java.sql.SQLException,
javax.servlet.ServletException, java.io.IOException,
AuthorizeException
{
String jspPage = null;
// get with a collection ID means put up browse window
int myID = UIUtil.getIntParameter(request, "cid");
// get collection
Collection myCollection = Collection.find(context, myID);
// authorize check
AuthorizeManager.authorizeAction(context, myCollection,
Constants.COLLECTION_ADMIN);
String action = request.getParameter("action");
if (action == null)
{
action = "";
}
// Defined non-empty value shows that 'Cancel' has been pressed
String cancel = request.getParameter("cancel");
if (cancel == null)
{
cancel = "";
}
if (action.equals("") || !cancel.equals(""))
{
// get with no action parameter set means to put up the main page
// which is statistics and some command buttons to add/remove items
//
// also holds for interruption by pressing 'Cancel'
int count_native = 0; // # of items owned by this collection
int count_import = 0; // # of virtual items
Map<Integer, Item> myItems = new HashMap<Integer, Item>(); // # for the browser
Map<Integer, Collection> myCollections = new HashMap<Integer, Collection>(); // collections for list
Map<Integer, Integer> myCounts = new HashMap<Integer, Integer>(); // counts for each collection
// get all items from that collection, add them to a hash
ItemIterator i = myCollection.getItems();
try
{
// iterate through the items in this collection, and count how many
// are native, and how many are imports, and which collections they
// came from
while (i.hasNext())
{
Item myItem = i.next();
// get key for hash
Integer myKey = Integer.valueOf(myItem.getID());
if (myItem.isOwningCollection(myCollection))
{
count_native++;
}
else
{
count_import++;
}
// is the collection in the hash?
Collection owningCollection = myItem.getOwningCollection();
Integer cKey = Integer.valueOf(owningCollection.getID());
if (myCollections.containsKey(cKey))
{
Integer x = myCounts.get(cKey);
int myCount = x.intValue() + 1;
// increment count for that collection
myCounts.put(cKey, Integer.valueOf(myCount));
}
else
{
// store and initialize count
myCollections.put(cKey, owningCollection);
myCounts.put(cKey, Integer.valueOf(1));
}
// store the item
myItems.put(myKey, myItem);
}
}
finally
{
if (i != null)
{
i.close();
}
}
// remove this collection's entry because we already have a native
// count
myCollections.remove(Integer.valueOf(myCollection.getID()));
// sort items - later
// show page
request.setAttribute("collection", myCollection);
request.setAttribute("count_native", Integer.valueOf(count_native));
request.setAttribute("count_import", Integer.valueOf(count_import));
request.setAttribute("items", myItems);
request.setAttribute("collections", myCollections);
request.setAttribute("collection_counts", myCounts);
request
.setAttribute("all_collections", Collection
.findAll(context));
// show this page when we're done
jspPage = "itemmap-main.jsp";
// show the page
JSPManager.showJSP(request, response, jspPage);
}
else if (action.equals("Remove"))
{
// get item IDs to remove
String[] itemIDs = request.getParameterValues("item_ids");
String message = "remove";
LinkedList<String> removedItems = new LinkedList<String>();
if (itemIDs == null)
{
message = "none-removed";
}
else
{
for (int j = 0; j < itemIDs.length; j++)
{
int i = Integer.parseInt(itemIDs[j]);
removedItems.add(itemIDs[j]);
Item myItem = Item.find(context, i);
// make sure item doesn't belong to this collection
if (!myItem.isOwningCollection(myCollection))
{
myCollection.removeItem(myItem);
try
{
IndexBrowse ib = new IndexBrowse(context);
ib.indexItem(myItem);
}
catch (BrowseException e)
{
log.error("caught exception: ", e);
throw new ServletException(e);
}
}
}
}
request.setAttribute("message", message);
request.setAttribute("collection", myCollection);
request.setAttribute("processedItems", removedItems);
// show this page when we're done
jspPage = "itemmap-info.jsp";
// show the page
JSPManager.showJSP(request, response, jspPage);
}
else if (action.equals("Add"))
{
// get item IDs to add
String[] itemIDs = request.getParameterValues("item_ids");
String message = "added";
LinkedList<String> addedItems = new LinkedList<String>();
if (itemIDs == null)
{
message = "none-selected";
}
else
{
for (int j = 0; j < itemIDs.length; j++)
{
int i = Integer.parseInt(itemIDs[j]);
Item myItem = Item.find(context, i);
if (AuthorizeManager.authorizeActionBoolean(context, myItem, Constants.READ))
{
// make sure item doesn't belong to this collection
if (!myItem.isOwningCollection(myCollection))
{
myCollection.addItem(myItem);
try
{
IndexBrowse ib = new IndexBrowse(context);
ib.indexItem(myItem);
}
catch (BrowseException e)
{
log.error("caught exception: ", e);
throw new ServletException(e);
}
addedItems.add(itemIDs[j]);
}
}
}
}
request.setAttribute("message", message);
request.setAttribute("collection", myCollection);
request.setAttribute("processedItems", addedItems);
// show this page when we're done
jspPage = "itemmap-info.jsp";
// show the page
JSPManager.showJSP(request, response, jspPage);
}
else if (action.equals("Search Authors"))
{
String name = (String) request.getParameter("namepart");
String bidx = ConfigurationManager.getProperty("itemmap.author.index");
if (bidx == null)
{
throw new ServletException("There is no configuration for itemmap.author.index");
}
Map<Integer, Item> items = new HashMap<Integer, Item>();
try
{
BrowserScope bs = new BrowserScope(context);
BrowseIndex bi = BrowseIndex.getBrowseIndex(bidx);
// set up the browse scope
bs.setBrowseIndex(bi);
bs.setOrder(SortOption.ASCENDING);
bs.setFilterValue(name);
bs.setFilterValuePartial(true);
bs.setJumpToValue(null);
bs.setResultsPerPage(10000); // an arbitrary number (large) for the time being
bs.setBrowseLevel(1);
BrowseEngine be = new BrowseEngine(context);
BrowseInfo results = be.browse(bs);
Item[] browseItems = results.getItemResults(context);
// FIXME: oh god this is so annoying - what an API /Richard
// we need to deduplicate against existing items in this collection
ItemIterator itr = myCollection.getItems();
try
{
ArrayList<Integer> idslist = new ArrayList<Integer>();
while (itr.hasNext())
{
idslist.add(Integer.valueOf(itr.nextID()));
}
for (int i = 0; i < browseItems.length; i++)
{
// only if it isn't already in this collection
if (!idslist.contains(Integer.valueOf(browseItems[i].getID())))
{
// only put on list if you can read item
if (AuthorizeManager.authorizeActionBoolean(context, browseItems[i], Constants.READ))
{
items.put(Integer.valueOf(browseItems[i].getID()), browseItems[i]);
}
}
}
}
finally
{
if (itr != null)
{
itr.close();
}
}
}
catch (BrowseException e)
{
log.error("caught exception: ", e);
throw new ServletException(e);
}
request.setAttribute("collection", myCollection);
request.setAttribute("browsetext", name);
request.setAttribute("items", items);
request.setAttribute("browsetype", "Add");
jspPage = "itemmap-browse.jsp";
JSPManager.showJSP(request, response, jspPage);
}
else if (action.equals("browse"))
{
// target collection to browse
int t = UIUtil.getIntParameter(request, "t");
Collection targetCollection = Collection.find(context, t);
// now find all imported items from that collection
// seemingly inefficient, but database should have this query cached
Map<Integer, Item> items = new HashMap<Integer, Item>();
ItemIterator i = myCollection.getItems();
try
{
while (i.hasNext())
{
Item myItem = i.next();
if (myItem.isOwningCollection(targetCollection))
{
Integer myKey = Integer.valueOf(myItem.getID());
items.put(myKey, myItem);
}
}
}
finally
{
if (i != null)
{
i.close();
}
}
request.setAttribute("collection", myCollection);
request.setAttribute("browsetext", targetCollection
.getMetadata("name"));
request.setAttribute("items", items);
request.setAttribute("browsetype", "Remove");
// show this page when we're done
jspPage = "itemmap-browse.jsp";
// show the page
JSPManager.showJSP(request, response, jspPage);
}
context.complete();
}
}