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// $Id$
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/**
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* Copyright (C) 2009 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.remote.config;
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import java.util.ArrayList;
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import java.util.List;
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import org.apache.log4j.Logger;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.context.ApplicationContext;
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import org.springframework.web.context.WebApplicationContext;
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/**
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* @author a.kohlbecker
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* @date 20.07.2010
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*
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*/
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public abstract class AbstractWebApplicationConfigurer {
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private static final String ATTRIBUTE_ERROR_MESSAGES = "cdm.errorMessages";
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public static final Logger logger = Logger.getLogger(AbstractWebApplicationConfigurer.class);
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WebApplicationContext webApplicationContext;
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@Autowired
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public void setApplicationContext(ApplicationContext applicationContext){
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if(WebApplicationContext.class.isAssignableFrom(applicationContext.getClass())) {
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this.webApplicationContext = (WebApplicationContext)applicationContext;
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} else {
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logger.error("The " + this.getClass().getSimpleName() + " only can be used within a WebApplicationContext");
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}
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}
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/**
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* Find a property in the ServletContext if not found search in a second
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* step in the environment variables of the OS
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*
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* @param property
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* @param required
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* @return
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*/
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protected String findProperty(String property, boolean required) {
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// 1. look for the property in the ServletContext
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Object obj = webApplicationContext.getServletContext().getAttribute(property);
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String value = (String)obj;
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// 2. look for the property in environment variables of the OS
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if(value == null){
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value = System.getProperty(property);
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}
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if(value == null && required){
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logger.error("property {" + property + "} not found.");
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logger.error("--> This property can be set in two ways:");
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logger.error("--> 1. as attribute to the ServletContext");
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logger.error("--> 2. as system property e.g. -D" + property);
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logger.error("Stopping application ...");
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System.exit(-1);
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}
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return value;
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}
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protected void addErrorMessageToServletContextAttributes(String errorMessage) {
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Object o = webApplicationContext.getServletContext().getAttribute(ATTRIBUTE_ERROR_MESSAGES);
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List<String> messages;
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if(o != null && o instanceof List<?>){
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messages = (List<String>) o;
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} else {
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messages = new ArrayList<String>();
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}
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messages.add(errorMessage);
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webApplicationContext.getServletContext().setAttribute(ATTRIBUTE_ERROR_MESSAGES, messages);
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}
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}
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