Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package edu.harvard.iq.dataverse; import edu.harvard.iq.dataverse.engine.command.Command; import edu.harvard.iq.dataverse.engine.command.exception.CommandException; import edu.harvard.iq.dataverse.engine.command.impl.UpdateDataverseCommand; import edu.harvard.iq.dataverse.engine.command.impl.UpdateDataverseGuestbookCommand; import edu.harvard.iq.dataverse.util.JsfHelper; import java.sql.Timestamp; import java.util.ArrayList; import java.util.Date; import java.util.Iterator; import java.util.List; import java.util.logging.Logger; import javax.ejb.EJB; import javax.ejb.EJBException; import javax.faces.application.FacesMessage; import javax.faces.context.FacesContext; import javax.faces.view.ViewScoped; import javax.inject.Inject; import javax.inject.Named; import org.apache.commons.lang.StringUtils; /** * * @author skraffmiller */ @ViewScoped @Named("GuestbookPage") public class GuestbookPage implements java.io.Serializable { private static final Logger logger = Logger.getLogger(GuestbookPage.class.getCanonicalName()); @EJB GuestbookServiceBean guestbookService; @EJB DataverseServiceBean dataverseService; @EJB EjbDataverseEngine commandEngine; @EJB GuestbookResponseServiceBean guestbookResponseService; @Inject DataverseSession session; @Inject DataverseRequestServiceBean dvRequestService; @Inject PermissionsWrapper permissionsWrapper; public enum EditMode { CREATE, METADATA, CLONE }; private Guestbook guestbook; private Dataverse dataverse; private EditMode editMode; private Long ownerId; private Long guestbookId; private Long sourceId; private Guestbook sourceGB; public Long getSourceId() { return sourceId; } public void setSourceId(Long sourceId) { this.sourceId = sourceId; } public Guestbook getSourceGB() { return sourceGB; } public void setSourceGB(Guestbook sourceGB) { this.sourceGB = sourceGB; } public Long getGuestbookId() { return guestbookId; } public void setGuestbookId(Long guestbookId) { this.guestbookId = guestbookId; } public Guestbook getGuestbook() { return guestbook; } public void setGuestbook(Guestbook guestbook) { this.guestbook = guestbook; } public Dataverse getDataverse() { return dataverse; } public void setDataverse(Dataverse dataverse) { this.dataverse = dataverse; } public EditMode getEditMode() { return editMode; } public void setEditMode(EditMode editMode) { this.editMode = editMode; } public Long getOwnerId() { return ownerId; } public void setOwnerId(Long ownerId) { this.ownerId = ownerId; } public String init() { dataverse = dataverseService.find(ownerId); if (dataverse == null) { return permissionsWrapper.notFound(); } if (!permissionsWrapper.canIssueCommand(dataverse, UpdateDataverseCommand.class)) { return permissionsWrapper.notAuthorized(); } if (guestbookId != null) { // edit or view existing for a template for (Guestbook dvGb : dataverse.getGuestbooks()) { if (dvGb.getId().longValue() == guestbookId) { guestbook = dvGb; } } guestbook.setDataverse(dataverse); if (guestbook.getCustomQuestions() == null || guestbook.getCustomQuestions().isEmpty()) { guestbook.setCustomQuestions(new ArrayList<CustomQuestion>()); initCustomQuestion(); } editMode = EditMode.METADATA; } else if (ownerId != null && sourceId == null) { // create mode for a new template guestbook = new Guestbook(); guestbook.setDataverse(dataverse); guestbook.setCustomQuestions(new ArrayList<CustomQuestion>()); initCustomQuestion(); editMode = EditMode.CREATE; } else if (ownerId != null && sourceId != null) { // Clone mode for a new template from source editMode = EditMode.CLONE; sourceGB = guestbookService.find(sourceId); guestbook = sourceGB.copyGuestbook(sourceGB, dataverse); String name = "Copy of " + sourceGB.getName(); guestbook.setName(name); guestbook.setUsageCount(new Long(0)); guestbook.setCreateTime(new Timestamp(new Date().getTime())); if (guestbook.getCustomQuestions() == null || guestbook.getCustomQuestions().isEmpty()) { guestbook.setCustomQuestions(new ArrayList<CustomQuestion>()); initCustomQuestion(); } } else { throw new RuntimeException("On Guestook page without id or ownerid."); // improve error handling } return null; } public String removeCustomQuestion(Long index) { guestbook.removeCustomQuestion(index.intValue()); return ""; } public List<GuestbookResponse> getGuestbookResponses() { return null; } private void initCustomQuestion() { CustomQuestion toAdd = new CustomQuestion(); toAdd.setQuestionType("text"); toAdd.setCustomQuestionValues(new ArrayList<CustomQuestionValue>()); toAdd.setGuestbook(guestbook); int index = guestbook.getCustomQuestions().size(); guestbook.addCustomQuestion(index, toAdd); } public void addCustomQuestion(Integer indexIn) { CustomQuestion toAdd = new CustomQuestion(); toAdd.setQuestionType("text"); toAdd.setCustomQuestionValues(new ArrayList<CustomQuestionValue>()); toAdd.setGuestbook(guestbook); guestbook.addCustomQuestion(indexIn, toAdd); } public void addCustomQuestionValue(CustomQuestion cq, int index) { CustomQuestionValue toAdd = new CustomQuestionValue(); toAdd.setValueString(""); toAdd.setCustomQuestion(cq); cq.addCustomQuestionValue(index, toAdd); } public void removeCustomQuestionValue(CustomQuestion cq, Long index) { cq.removeCustomQuestionValue(index.intValue()); } public void toggleQuestionType(CustomQuestion questionIn) { if (questionIn.getCustomQuestionValues() != null && questionIn.getCustomQuestionValues().isEmpty() && questionIn.getQuestionType() != null && questionIn.getQuestionType().equals("options")) { questionIn.setCustomQuestionValues(new ArrayList<CustomQuestionValue>()); CustomQuestionValue addCQV = new CustomQuestionValue(); addCQV.setCustomQuestion(questionIn); questionIn.getCustomQuestionValues().add(addCQV); } } public void edit(GuestbookPage.EditMode editMode) { this.editMode = editMode; } public String save() { boolean create = false; if (!(guestbook.getCustomQuestions() == null)) { for (CustomQuestion cq : guestbook.getCustomQuestions()) { if (cq.getQuestionType().equals("text")) { cq.setCustomQuestionValues(null); } } Iterator<CustomQuestion> cqIt = guestbook.getCustomQuestions().iterator(); while (cqIt.hasNext()) { CustomQuestion cq = cqIt.next(); if (StringUtils.isBlank(cq.getQuestionString())) { cqIt.remove(); } } for (CustomQuestion cq : guestbook.getCustomQuestions()) { if (cq != null && cq.getQuestionType().equals("options")) { Iterator<CustomQuestionValue> cqvIt = cq.getCustomQuestionValues().iterator(); while (cqvIt.hasNext()) { CustomQuestionValue cqv = cqvIt.next(); if (StringUtils.isBlank(cqv.getValueString())) { cqvIt.remove(); } } } } for (CustomQuestion cq : guestbook.getCustomQuestions()) { if (cq != null && cq.getQuestionType().equals("options")) { if (cq.getCustomQuestionValues() == null || cq.getCustomQuestionValues().isEmpty()) { FacesContext.getCurrentInstance().addMessage(null, new FacesMessage( FacesMessage.SEVERITY_ERROR, "Guestbook Save Failed", " - An Option question requires multiple options. Please complete before saving.")); return null; } if (cq.getCustomQuestionValues().size() == 1) { FacesContext.getCurrentInstance().addMessage(null, new FacesMessage( FacesMessage.SEVERITY_ERROR, "Guestbook Save Failed", " - An Option question requires multiple options. Please complete before saving.")); return null; } } } int i = 0; for (CustomQuestion cq : guestbook.getCustomQuestions()) { int j = 0; cq.setDisplayOrder(i); if (cq.getCustomQuestionValues() != null && !cq.getCustomQuestionValues().isEmpty()) { for (CustomQuestionValue cqv : cq.getCustomQuestionValues()) { cqv.setDisplayOrder(j); j++; } } i++; } } Command<Dataverse> cmd; try { if (editMode == EditMode.CREATE || editMode == EditMode.CLONE) { guestbook.setCreateTime(new Timestamp(new Date().getTime())); guestbook.setUsageCount(new Long(0)); guestbook.setEnabled(true); dataverse.getGuestbooks().add(guestbook); cmd = new UpdateDataverseCommand(dataverse, null, null, dvRequestService.getDataverseRequest(), null); commandEngine.submit(cmd); create = true; } else { cmd = new UpdateDataverseGuestbookCommand(dataverse, guestbook, dvRequestService.getDataverseRequest()); commandEngine.submit(cmd); } } catch (EJBException ex) { StringBuilder error = new StringBuilder(); error.append(ex).append(" "); error.append(ex.getMessage()).append(" "); Throwable cause = ex; while (cause.getCause() != null) { cause = cause.getCause(); error.append(cause).append(" "); error.append(cause.getMessage()).append(" "); } // FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_FATAL, "Guestbook Save Failed", " - " + error.toString())); logger.info("Guestbook Page EJB Exception. Dataverse: " + dataverse.getName()); logger.info(error.toString()); return null; } catch (CommandException ex) { logger.info("Guestbook Page Command Exception. Dataverse: " + dataverse.getName()); logger.info(ex.toString()); FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_FATAL, "Guestbook Save Failed", " - " + ex.toString())); //logger.severe(ex.getMessage()); } editMode = null; String msg = (create) ? "The guestbook has been created." : "The guestbook has been edited and saved."; JsfHelper.addFlashMessage(msg); return "/manage-guestbooks.xhtml?dataverseId=" + dataverse.getId() + "&faces-redirect=true"; } public void cancel() { editMode = null; } }