Java tutorial
/* * 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.ha; import javax.faces.application.FacesMessage; import javax.faces.model.DataModel; import javax.faces.model.SelectItem; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.rhq.core.domain.auth.Subject; import org.rhq.core.domain.cloud.PartitionEvent; import org.rhq.core.domain.cloud.PartitionEventType; import org.rhq.core.domain.util.PageControl; import org.rhq.core.domain.util.PageList; import org.rhq.core.gui.util.FacesContextUtility; import org.rhq.core.gui.util.StringUtility; import org.rhq.enterprise.gui.common.converter.SelectItemUtils; import org.rhq.enterprise.gui.common.framework.PagedDataTableUIBean; import org.rhq.enterprise.gui.common.paging.PageControlView; import org.rhq.enterprise.gui.common.paging.PagedListDataModel; import org.rhq.enterprise.gui.util.EnterpriseFacesContextUtility; import org.rhq.enterprise.server.cloud.PartitionEventManagerLocal; import org.rhq.enterprise.server.util.LookupUtil; /** * @author Joseph Marques * @author Jason Dobies */ public class ListPartitionEventsUIBean extends PagedDataTableUIBean { private static final Log log = LogFactory.getLog(ListPartitionEventsUIBean.class); public static final String MANAGED_BEAN_NAME = "ListPartitionEventsUIBean"; private PartitionEventManagerLocal partitionEventManager = LookupUtil.getPartitionEventManager(); // begin filter stuff private String typeFilter; private String detailsFilter; private String executionStatusFilter; private SelectItem[] typeSelectItems; private SelectItem[] executionStatusSelectItems; public String getTypeFilter() { if (typeFilter == null) { typeFilter = SelectItemUtils.getSelectItemFilter("partitionEventsForm:typeFilter"); } return SelectItemUtils.cleanse(typeFilter); } public void setTypeFilter(String typeFilter) { this.typeFilter = typeFilter; } public PartitionEventType getPartitionEventType() { String typeName = getTypeFilter(); if (typeName != null) { return Enum.valueOf(PartitionEventType.class, typeName); } return null; } public String getDetailsFilter() { return detailsFilter; } public void setDetailsFilter(String detailsFilter) { this.detailsFilter = detailsFilter; } public String getExecutionStatusFilter() { if (executionStatusFilter == null) { executionStatusFilter = SelectItemUtils .getSelectItemFilter("partitionEventsForm:executionStatusFilter"); } return SelectItemUtils.cleanse(executionStatusFilter); } public void setExecutionStatusFilter(String executionStatusFilter) { this.executionStatusFilter = executionStatusFilter; } public PartitionEvent.ExecutionStatus getExecutionStatus() { String executionStatusName = getExecutionStatusFilter(); if (executionStatusName != null) { return Enum.valueOf(PartitionEvent.ExecutionStatus.class, executionStatusName); } return null; } public SelectItem[] getTypeSelectItems() { if (typeSelectItems == null) { typeSelectItems = SelectItemUtils.convertFromEnum(PartitionEventType.class, true); } return typeSelectItems; } public SelectItem[] getExecutionStatusSelectItems() { if (executionStatusSelectItems == null) { executionStatusSelectItems = SelectItemUtils.convertFromEnum(PartitionEvent.ExecutionStatus.class, true); } return executionStatusSelectItems; } // end filter stuff @Override public DataModel getDataModel() { if (dataModel == null) { dataModel = new ListPartitionEventsDataModel(PageControlView.ListPartitionEventsView, MANAGED_BEAN_NAME); } return dataModel; } public String removeSelectedEvents() { Subject subject = EnterpriseFacesContextUtility.getSubject(); String[] selectedEvents = getSelectedAlerts(); Integer[] eventIds = StringUtility.getIntegerArray(selectedEvents); try { partitionEventManager.deletePartitionEvents(subject, eventIds); FacesContextUtility.addMessage(FacesMessage.SEVERITY_INFO, "Deleted " + eventIds.length + " events."); } catch (Exception e) { FacesContextUtility.addMessage(FacesMessage.SEVERITY_ERROR, "Failed to delete selected events.", e); } return "success"; } public String purgeAllEvents() { Subject subject = EnterpriseFacesContextUtility.getSubject(); try { int numDeleted = partitionEventManager.purgeAllEvents(subject); FacesContextUtility.addMessage(FacesMessage.SEVERITY_INFO, "Deleted " + numDeleted + " events"); } catch (Exception e) { FacesContextUtility.addMessage(FacesMessage.SEVERITY_ERROR, "Failed to purge events", e); log.error("Failed to purge events", e); } return "success"; } public String repartition() { Subject subject = EnterpriseFacesContextUtility.getSubject(); try { partitionEventManager.cloudPartitionEventRequest(subject, PartitionEventType.ADMIN_INITIATED_PARTITION, ""); } catch (Exception e) { FacesContextUtility.addMessage(FacesMessage.SEVERITY_ERROR, "Forced repartition / redistribution failed", e); log.error("Forced repartition / redistribution failed", e); } return "success"; } private String[] getSelectedAlerts() { return FacesContextUtility.getRequest().getParameterValues("selectedEvents"); } private class ListPartitionEventsDataModel extends PagedListDataModel<PartitionEvent> { private ListPartitionEventsDataModel(PageControlView view, String beanName) { super(view, beanName); } @Override public PageList<PartitionEvent> fetchPage(PageControl pc) { Subject subject = EnterpriseFacesContextUtility.getSubject(); if (getDetailsFilter() == null) { setDetailsFilter( FacesContextUtility.getOptionalRequestParameter("partitionEventsForm:detailsFilter")); } String details = ListPartitionEventsUIBean.this.getDetailsFilter(); PartitionEventType type = ListPartitionEventsUIBean.this.getPartitionEventType(); PartitionEvent.ExecutionStatus status = ListPartitionEventsUIBean.this.getExecutionStatus(); PageList<PartitionEvent> list = partitionEventManager.getPartitionEvents(subject, type, status, details, pc); return list; } } }