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/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe 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.
*
* MyCoRe 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 MyCoRe. If not, see .
*/
package org.mycore.frontend.servlets.persistence;
import static org.mycore.access.MCRAccessManager.PERMISSION_WRITE;
import static org.mycore.common.MCRConstants.XLINK_NAMESPACE;
import static org.mycore.common.MCRConstants.XSI_NAMESPACE;
import java.io.IOException;
import java.util.Properties;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.mycore.access.MCRAccessException;
import org.mycore.access.MCRAccessManager;
import org.mycore.common.content.MCRJDOMContent;
import org.mycore.datamodel.common.MCRActiveLinkException;
import org.mycore.datamodel.metadata.MCRDerivate;
import org.mycore.datamodel.metadata.MCRMetadataManager;
import org.mycore.datamodel.metadata.MCRObjectID;
import org.mycore.frontend.MCRFrontendUtil;
import org.xml.sax.SAXParseException;
/**
* Handles UPDATE operation on {@link MCRDerivate}.
* @author Thomas Scheffler (yagee)
*
*/
public class MCRUpdateDerivateServlet extends MCRPersistenceServlet {
/**
*
*/
private static final long serialVersionUID = -8005685456830013040L;
@Override
void handlePersistenceOperation(HttpServletRequest request, HttpServletResponse response) throws MCRAccessException,
ServletException, MCRActiveLinkException, SAXParseException, JDOMException, IOException {
Document editorSubmission = MCRPersistenceHelper.getEditorSubmission(request, false);
if (editorSubmission != null) {
MCRObjectID objectID = updateDerivateXML(editorSubmission);
request.setAttribute(OBJECT_ID_KEY, objectID);
} else {
//access checks
String objectID = getProperty(request, "objectid");
MCRObjectID derivateID = MCRObjectID.getInstance(getProperty(request, "id"));
request.setAttribute("id", derivateID.toString());
if (!MCRAccessManager.checkPermission(derivateID, PERMISSION_WRITE)) {
throw MCRAccessException.missingPermission("Change derivate title.", derivateID.toString(),
PERMISSION_WRITE);
}
if (objectID != null) {
//Load additional files
MCRObjectID mcrObjectID = MCRObjectID.getInstance(objectID);
request.setAttribute("objectid", mcrObjectID.toString());
if (!MCRAccessManager.checkPermission(mcrObjectID, PERMISSION_WRITE)) {
throw MCRAccessException.missingPermission("Change derivate title.", mcrObjectID.toString(),
PERMISSION_WRITE);
}
}
}
}
@Override
void displayResult(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
MCRObjectID returnID = (MCRObjectID) request.getAttribute(OBJECT_ID_KEY);
if (returnID == null) {
//calculate redirect to title change form or add files form
redirectToUpdateDerivate(request, response);
} else {
response.sendRedirect(
response.encodeRedirectURL(MCRFrontendUtil.getBaseURL() + "receive/" + returnID));
}
}
/**
* Updates derivate xml in the persistence backend
* @param editorSubmission
* MyCoRe derivate as XML
* @return
* MCRObjectID of the MyCoRe object
* @throws SAXParseException
* @throws MCRAccessException
*/
private MCRObjectID updateDerivateXML(Document editorSubmission)
throws SAXParseException, IOException, MCRAccessException {
Element root = editorSubmission.getRootElement();
root.setAttribute("noNamespaceSchemaLocation", "datamodel-derivate.xsd", XSI_NAMESPACE);
root.addNamespaceDeclaration(XLINK_NAMESPACE);
root.addNamespaceDeclaration(XSI_NAMESPACE);
byte[] xml = new MCRJDOMContent(editorSubmission).asByteArray();
MCRDerivate der = new MCRDerivate(xml, true);
MCRMetadataManager.update(der);
return der.getOwnerID();
}
/**
* Redirects to either add files to derivate upload form or change derivate title form.
*
* At least "id" HTTP parameter is required to succeed.
*
*
id
*
derivate ID(required)
*
objectid
*
object ID of the parent mycore object
*
* If the "objectid" parameter is given, upload form is presented.
* If not than the user is redirected to the title change form.
*
* @throws IOException
* @throws ServletException
*/
private void redirectToUpdateDerivate(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException {
String objectID = getProperty(request, "objectid");
String derivateID = getProperty(request, "id");
if (objectID != null) {
//Load additional files
redirectToUploadForm(getServletContext(), request, response, objectID, derivateID);
} else {
//set derivate title
Properties params = new Properties();
params.put("sourceUri", "xslStyle:mycorederivate-editor:mcrobject:" + derivateID);
params.put("cancelUrl", MCRPersistenceHelper.getCancelUrl(request));
String page = MCRPersistenceHelper.getWebPage(getServletContext(), "editor_form_derivate.xed",
"editor_form_derivate.xml");
String redirectURL = MCRFrontendUtil.getBaseURL() + page;
response
.sendRedirect(response.encodeRedirectURL(buildRedirectURL(redirectURL, params)));
}
}
}
