EditServerSetting.java

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/*
 * Project: Server for annotations sharing
 * Author: Ing. Jaroslav Dytrych idytrych@fit.vutbr.cz
 * File: EditServerSetting.java
 * Description: Backbean for pages for editing of server settings
 */

/**
 * @file EditServerSetting.java
 *
 * @brief Backbean for pages for editing of server settings
 */

package cz.vutbr.fit.knot.annotations.web;

import cz.vutbr.fit.knot.annotations.app.AppBean;
import cz.vutbr.fit.knot.annotations.app.Constants;
import cz.vutbr.fit.knot.annotations.entity.ServerSetting;
import java.io.Serializable;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;

/**
 * Backbean for pages for editing of server settings
 *
 * @brief Backbean for pages for editing of server settings
 * @author Martin Petr (xpetrm05)
 */
@ManagedBean
@ViewScoped
public class EditServerSetting implements Serializable{
  /**
   * User server setting name
   */
  String name = null;
  
  /**
   * Value of server setting
   */
  String value = null;  
  
  /**
   * Edited server setting
   */
  ServerSetting setting = null;
  
  /**
   * Error message displayed in form
   */
  private String errorMessage = "";

  public EditServerSetting() {
  }
  
  /**
   * Gets name of server setting
   *
   * @return Returns name of server setting
   */
  public String getName() {
    if((setting = SessionManager.getSession().getActualServerSetting()) != null){
      name = setting.getSettingName();
      return name;
    }else return "";
  }
  
  /**
   * Sets name of server setting
   *
   * @param name Name of server setting
   */
  public void setName(String name) {
    this.name = name;
  }

  /**
   * Gets value of server setting
   *
   * @return Returns value of server setting
   */
  public String getValue() {
    if((setting = SessionManager.getSession().getActualServerSetting()) != null){
      value = setting.getSettingValue();
      return value;
    }else return "";
  }

  /**
   * Sets value of server setting
   *
   * @param value Value of server setting
   */
  public void setValue(String value) {
    this.value = value;
  }
  
  /**
   * Gets error message displayed in form
   *
   * @return Returns error message displayed in form
   */
  public String getErrorMessage() {
    return errorMessage;
  }

  /**
   * Sets error message to be displayed in form
   *
   * @param errorMessage Error message to be displayed in form
   */
  public void setErrorMessage(String errorMessage) {
    this.errorMessage = errorMessage;
  }
  
  /**
   * Action listener for save button in the page for editing of server setting
   *
   * @return Returns page outcome (identificator of next page or null to stay here)
   */
  public String btnSaveAction(){
    boolean errorOccurred = false;
    errorMessage = "";
    
    if(name.isEmpty()){
      errorMessage = errorMessage + MessageProvider.getMessage("serverSettingsNameErr") + " ";
      errorOccurred = true;
    }
    
    if(value.isEmpty()){
      errorMessage = errorMessage + MessageProvider.getMessage("serverSettingsValueErr") + " ";
      errorOccurred = true;
    }
    
    if(errorOccurred){
      errorMessage = MessageProvider.getMessage("error") + " " + errorMessage;
      return null;
    }
    
    setting.setSettingName(name);
    setting.setSettingValue(value);

    if ((AppBean.getPersistenceManager().saveEntityChanges(setting)) == null) {
      errorMessage = MessageProvider.getMessage("changesNSDatabaseFailure");
      if (Constants.LOG_LEVEL >= Constants.LOG_LEVEL_SERVER_ERRORS) {
        String msg = "Persisting of changes in the server settings failed.";
        Logger.getLogger(EditUser.class.getName()).log(Level.SEVERE, msg);
      }
      return null;
    }
    
    if (Constants.SETTINGS_RESET.contains(name)) {
      AppBean.resetURIs();
    }
    
    SessionManager.getSession().setActualServerSetting(setting);
    return "cancel";
  }
  
  /**
   * Action listener for cancel button
   *
   * @return Returns page outcome (identificator of next page or null to stay here)
   */
  public String btnCancelAction(){
    SessionManager.getSession().setActualServerSetting(null);
    return "cancel";
  }
}