/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* 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 version 2 of the License.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.gui.legacy.action.resource.common.monitor.visibility;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.rhq.enterprise.gui.legacy.Constants;
import org.rhq.enterprise.gui.legacy.action.BaseActionMapping;
import org.rhq.enterprise.gui.legacy.util.SessionUtils;
public class CompareMetricsAction extends MetricsControlAction {
protected static Log log = LogFactory.getLog(CompareMetricsAction.class.getName());
// ---------------------------------------------------- Public Methods
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws Exception {
CompareMetricsForm compareForm = (CompareMetricsForm) form;
if (compareForm.isBackClicked()) {
return returnBack(request, mapping, new HashMap());
}
return super.execute(mapping, form, request, response);
}
private ActionForward returnBack(HttpServletRequest request, ActionMapping mapping, Map params) throws Exception {
whackMyReturnPath(request, (BaseActionMapping) mapping);
return constructForward(request, mapping, Constants.BACK_URL, params, YES_RETURN_PATH);
}
private void whackMyReturnPath(HttpServletRequest request, BaseActionMapping mapping) throws ServletException {
String workflowName = mapping.getWorkflow();
if ((workflowName == null) || "".equals(workflowName.trim())) {
throw new ServletException("mapping " + mapping.getName() + " has a null or invalid workflow "
+ " attribute.");
}
// there should be only one workflow url. if there are more,
// it's because we've visited the compare metrics page
// multiple times within the nested workflow without leaving,
// and the compare metrics page sets a return path to itself
// every single time. so, loop through and pop them all off
// except the very last one, which points back to where we
// came from originally.
int size = SessionUtils.countWorkflow(request.getSession(false), workflowName);
for (int i = size; i > 1; i--) {
SessionUtils.popWorkflow(request.getSession(false), workflowName);
}
}
}