/*
BEGIN LICENSE BLOCK
Copyright 2010-2011, Heiko Mueller, Sam Lindley, James Cheney and
University of Edinburgh
This file is part of Database Wiki.
Database Wiki 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 3 of the License, or
(at your option) any later version.
Database Wiki 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 Database Wiki. If not, see <http://www.gnu.org/licenses/>.
END LICENSE BLOCK
*/
package org.dbwiki.web.ui.printer.index;
import org.dbwiki.data.index.ChangesSinceContentIterator;
import org.dbwiki.data.index.ContentIterator;
import org.dbwiki.data.index.CurrentContentIterator;
import org.dbwiki.data.index.DatabaseContent;
import org.dbwiki.data.index.FullContentIterator;
import org.dbwiki.data.index.VersionContentIterator;
import org.dbwiki.data.resource.DatabaseIdentifier;
import org.dbwiki.web.html.HtmlLinePrinter;
import org.dbwiki.web.request.WikiRequest;
import org.dbwiki.web.request.parameter.RequestParameter;
import org.dbwiki.web.request.parameter.RequestParameterVersion;
import org.dbwiki.web.request.parameter.RequestParameterVersionChanges;
import org.dbwiki.web.request.parameter.RequestParameterVersionSingle;
import org.dbwiki.web.ui.printer.HtmlContentPrinter;
/** Abstract base class for printers that print indexes of entries
* Printing takes versioning into account.
* @author jcheney
*
*/
public abstract class IndexContentPrinter extends HtmlContentPrinter {
/*
* Private Variables
*/
private DatabaseContent _content;
private WikiRequest _request;
/*
* Constructors
*/
public IndexContentPrinter(WikiRequest request, DatabaseContent content) {
_request = request;
_content = content;
}
/*
* Abstract Methods
*/
public abstract void listContent(DatabaseIdentifier databaseIdentifier, ContentIterator iterator, WikiRequest request, HtmlLinePrinter body) throws org.dbwiki.exception.WikiException;
/*
* Public Methods
*/
public void print(HtmlLinePrinter body) throws org.dbwiki.exception.WikiException {
ContentIterator iterator = null;
RequestParameterVersion version = RequestParameter.versionParameter(_request.parameters().get(RequestParameter.ParameterVersion));
if (version.versionAll()) {
iterator = new FullContentIterator(_content);
} else if (version.versionChangesSince()) {
iterator = new ChangesSinceContentIterator(_content, ((RequestParameterVersionChanges)version).versionNumber());
} else if (version.versionCurrent()) {
iterator = new CurrentContentIterator(_content);
} else if (version.versionSingle()) {
iterator = new VersionContentIterator(_content, ((RequestParameterVersionSingle)version).versionNumber());
}
if (iterator != null) {
this.listContent(_request.wri().databaseIdentifier(), iterator, _request, body);
}
}
}