Package org.fao.geonet.services.metadata

Source Code of org.fao.geonet.services.metadata.BatchDelete

//=============================================================================
//===  Copyright (C) 2001-2007 Food and Agriculture Organization of the
//===  United Nations (FAO-UN), United Nations World Food Programme (WFP)
//===  and United Nations Environment Programme (UNEP)
//===
//===  This program is free software; you can redistribute it and/or modify
//===  it under the terms of the GNU General Public License as published by
//===  the Free Software Foundation; either version 2 of the License, or (at
//===  your option) any later version.
//===
//===  This program is distributed in the hope that it will be useful, but
//===  WITHOUT ANY WARRANTY; without even the implied warranty of
//===  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//===  General Public License for more details.
//===
//===  You should have received a copy of the GNU General Public License
//===  along with this program; if not, write to the Free Software
//===  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
//===
//===  Contact: Jeroen Ticheler - FAO - Viale delle Terme di Caracalla 2,
//===  Rome - Italy. email: geonetwork@osgeo.org
//==============================================================================

package org.fao.geonet.services.metadata;

import jeeves.constants.Jeeves;
import jeeves.server.ServiceConfig;
import jeeves.server.UserSession;
import jeeves.server.context.ServiceContext;
import org.fao.geonet.GeonetContext;
import org.fao.geonet.Util;
import org.fao.geonet.constants.Geonet;
import org.fao.geonet.constants.Params;
import org.fao.geonet.domain.Metadata;
import org.fao.geonet.domain.MetadataType;
import org.fao.geonet.kernel.AccessManager;
import org.fao.geonet.kernel.DataManager;
import org.fao.geonet.kernel.SelectionManager;
import org.fao.geonet.kernel.mef.MEFLib;
import org.fao.geonet.lib.Lib;
import org.fao.geonet.repository.MetadataRepository;
import org.fao.geonet.util.FileCopyMgr;
import org.jdom.Element;

import java.io.File;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

/**
* Removes a metadata from the system.
*/
public class BatchDelete extends BackupFileService {
  public void init(String appPath, ServiceConfig params) throws Exception {
        super.init(appPath, params);
    }

  //--------------------------------------------------------------------------
  //---
  //--- Service
  //---
  //--------------------------------------------------------------------------

  public Element serviceSpecificExec(Element params, ServiceContext context) throws Exception {
    GeonetContext gc = (GeonetContext) context.getHandlerContext(Geonet.CONTEXT_NAME);
    DataManager   dataMan   = gc.getBean(DataManager.class);
    AccessManager accessMan = gc.getBean(AccessManager.class);
    UserSession   session   = context.getUserSession();

    Set<Integer> metadata = new HashSet<Integer>();
    Set<Integer> notFound = new HashSet<Integer>();
    Set<Integer> notOwner = new HashSet<Integer>();
        boolean backupFile = Util.getParam(params, Params.BACKUP_FILE, true);

        if(context.isDebugEnabled())
            context.debug("Get selected metadata");
    SelectionManager sm = SelectionManager.getManager(session);

    synchronized(sm.getSelection("metadata")) {
    for (Iterator<String> iter = sm.getSelection("metadata").iterator(); iter.hasNext();) {
      String uuid = (String) iter.next();
            if(context.isDebugEnabled())
                context.debug("Deleting metadata with uuid:"+ uuid);

      String id   = dataMan.getMetadataId(uuid);
      //--- Metadata may have been deleted since selection
      if (id != null) {
        //-----------------------------------------------------------------------
        //--- check access
 
        Metadata info = context.getBean(MetadataRepository.class).findOne(id);
 
        if (info == null) {
          notFound.add(Integer.valueOf(id));
        } else if (!accessMan.isOwner(context, id)) {
          notOwner.add(Integer.valueOf(id));
        } else {
 
          //--- backup metadata in 'removed' folder
          if (backupFile && info.getDataInfo().getType() != MetadataType.SUB_TEMPLATE) {
            backupFile(context, id, info.getUuid(), MEFLib.doExport(context, info.getUuid(), "full", false, true, false));
          }
     
          //--- remove the metadata directory
          File pb = new File(Lib.resource.getMetadataDir(context, id));
          FileCopyMgr.removeDirectoryOrFile(pb);
 
          //--- delete metadata and return status
          dataMan.deleteMetadata(context, id);
                    if(context.isDebugEnabled())
                        context.debug("  Metadata with id " + id + " deleted.");
          metadata.add(Integer.valueOf(id));
        }
      } else
            if(context.isDebugEnabled())
                context.debug("  Metadata not found in db:"+ uuid);
        // TODO : add to notFound set
      }
    }
    // Clear the selection after delete
    SelectionManager.updateSelection("metadata", session, params.addContent(new Element("selected").setText("remove-all")), context);
   
    // -- for the moment just return the sizes - we could return the ids
    // -- at a later stage for some sort of result display
    return new Element(Jeeves.Elem.RESPONSE)
      .addContent(new Element("done")    .setText(metadata.size()+""))
      .addContent(new Element("notOwner").setText(notOwner.size()+""))
      .addContent(new Element("notFound").setText(notFound.size()+""));
  }
}
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