/**
* $Id: CommunitySearch.java 4679 2010-01-11 20:05:13Z mdiggory $
* $URL: http://scm.dspace.org/svn/repo/modules/dspace-discovery/trunk/block/src/main/java/org/dspace/app/xmlui/aspect/discovery/CommunitySearch.java $
* *************************************************************************
* Copyright (c) 2002-2009, DuraSpace. All rights reserved
* Licensed under the DuraSpace License.
*
* A copy of the DuraSpace License has been included in this
* distribution and is available at: http://scm.dspace.org/svn/repo/licenses/LICENSE.txt
*/
package org.dspace.app.xmlui.aspect.discovery;
import java.io.IOException;
import java.io.Serializable;
import java.sql.SQLException;
import org.apache.cocoon.caching.CacheableProcessingComponent;
import org.apache.cocoon.util.HashUtil;
import org.apache.excalibur.source.SourceValidity;
import org.apache.log4j.Logger;
import org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer;
import org.dspace.app.xmlui.utils.DSpaceValidity;
import org.dspace.app.xmlui.utils.HandleUtil;
import org.dspace.app.xmlui.utils.UIException;
import org.dspace.app.xmlui.wing.Message;
import org.dspace.app.xmlui.wing.WingException;
import org.dspace.app.xmlui.wing.element.Body;
import org.dspace.app.xmlui.wing.element.Division;
import org.dspace.app.xmlui.wing.element.PageMeta;
import org.dspace.app.xmlui.wing.element.Para;
import org.dspace.authorize.AuthorizeException;
import org.dspace.content.Collection;
import org.dspace.content.Community;
import org.dspace.content.DSpaceObject;
import org.dspace.core.LogManager;
import org.xml.sax.SAXException;
/**
* Display a single community. This includes a full text search, browse by list,
* community display and a list of recent submissions.
* private static final Logger log = Logger.getLogger(DSpaceFeedGenerator.class);
* @author Scott Phillips
*/
public class CommunitySearch extends AbstractDSpaceTransformer implements CacheableProcessingComponent
{
private static final Logger log = Logger.getLogger(CommunitySearch.class);
/** Language Strings */
private static final Message T_dspace_home =
message("xmlui.general.dspace_home");
private static final Message T_full_text_search =
message("xmlui.ArtifactBrowser.CommunityViewer.full_text_search");
private static final Message T_go =
message("xmlui.general.go");
public static final Message T_untitled =
message("xmlui.general.untitled");
private static final Message T_head_browse =
message("xmlui.ArtifactBrowser.CommunityViewer.head_browse");
private static final Message T_browse_titles =
message("xmlui.ArtifactBrowser.CommunityViewer.browse_titles");
private static final Message T_browse_authors =
message("xmlui.ArtifactBrowser.CommunityViewer.browse_authors");
private static final Message T_browse_dates =
message("xmlui.ArtifactBrowser.CommunityViewer.browse_dates");
private static final Message T_advanced_search_link=
message("xmlui.ArtifactBrowser.CommunityViewer.advanced_search_link");
private static final Message T_head_sub_communities =
message("xmlui.ArtifactBrowser.CommunityViewer.head_sub_communities");
private static final Message T_head_sub_collections =
message("xmlui.ArtifactBrowser.CommunityViewer.head_sub_collections");
/** Cached validity object */
private SourceValidity validity;
/**
* Generate the unique caching key.
* This key must be unique inside the space of this component.
*/
public Serializable getKey() {
try {
DSpaceObject dso = HandleUtil.obtainHandle(objectModel);
if (dso == null)
return "0"; // no item, something is wrong
return HashUtil.hash(dso.getHandle());
}
catch (SQLException sqle)
{
// Ignore all errors and just return that the component is not cachable.
return "0";
}
}
/**
* Generate the cache validity object.
*
* This validity object includes the community being viewed, all
* sub-communites (one level deep), all sub-collections, and
* recently submitted items.
*/
public SourceValidity getValidity()
{
if (this.validity == null)
{
Community community = null;
try {
DSpaceObject dso = HandleUtil.obtainHandle(objectModel);
if (dso == null)
return null;
if (!(dso instanceof Community))
return null;
community = (Community) dso;
DSpaceValidity validity = new DSpaceValidity();
validity.add(community);
Community[] subCommunities = community.getSubcommunities();
Collection[] collections = community.getCollections();
// Sub communities
for (Community subCommunity : subCommunities)
{
validity.add(subCommunity);
}
// Sub collections
for (Collection collection : collections)
{
validity.add(collection);
}
this.validity = validity.complete();
}
catch (Exception e)
{
// Ignore all errors and invalidate the cache.
}
log.info(LogManager.getHeader(context, "view_community", "community_id=" + (community == null ? "" : community.getID())));
}
return this.validity;
}
/**
* Add the community's title and trail links to the page's metadata
*/
public void addPageMeta(PageMeta pageMeta) throws SAXException,
WingException, UIException, SQLException, IOException,
AuthorizeException
{
}
/**
* Display a single community (and refrence any sub communites or
* collections)
*/
public void addBody(Body body) throws SAXException, WingException,
UIException, SQLException, IOException, AuthorizeException
{
DSpaceObject dso = HandleUtil.obtainHandle(objectModel);
if (!(dso instanceof Community))
return;
// Set up the major variables
Community community = (Community) dso;
// Build the community viewer division.
Division home = body.addDivision("community-home", "primary repository community");
String name = community.getMetadata("name");
if (name == null || name.length() == 0)
home.setHead(T_untitled);
else
home.setHead(name);
// The search / browse box.
{
Division search = home.addDivision("community-search-browse",
"secondary search-browse");
// Search query
Division query = search.addInteractiveDivision("community-search",
contextPath + "/handle/" + community.getHandle() + "/search",
Division.METHOD_POST, "secondary search");
Para para = query.addPara("search-query", null);
para.addContent(T_full_text_search);
para.addContent(" ");
para.addText("query");
para.addContent(" ");
para.addButton("submit").setValue(T_go);
//query.addPara().addXref(contextPath + "/handle/" + community.getHandle() + "/advanced-search", T_advanced_search_link);
// Browse by list
// Division browseDiv = search.addDivision("community-browse","secondary browse");
// List browse = browseDiv.addList("community-browse", List.TYPE_SIMPLE,
// "community-browse");
// browse.setHead(T_head_browse);
// String url = contextPath + "/handle/" + community.getHandle();
// browse.addItemXref(url + "/browse?type=title",T_browse_titles);
// browse.addItemXref(url + "/browse?type=author",T_browse_authors);
// browse.addItemXref(url + "/browse?type=dateissued",T_browse_dates);
}
}
/**
* Recycle
*/
public void recycle()
{
// Clear out our item's cache.
this.validity = null;
super.recycle();
}
}