/** * Builds an expression manager. * * @param maps an array of maps of strings with the values of the properties. * @since 0.1.0 */ public ExpressionManager(Map<String, String>... maps) { final RegexBasedInterpolator interpolator = new RegexBasedInterpolator(); for (Map<String, String> map : maps) { interpolator.addValueSource(new MapBasedValueSource(map)); } this.interpolator = interpolator; }
private Map<Object, Object> buildContext(ServletContext servletContext) { servletContext.log( "Loading plexus context properties from: '" + DEFAULT_PLEXUS_PROPERTIES + "'"); Map<Object, Object> context = new HashMap<Object, Object>(); String plexusPropertiesPath = servletContext.getInitParameter(PLEXUS_PROPERTIES_PARAM); if (plexusPropertiesPath == null) { plexusPropertiesPath = DEFAULT_PLEXUS_PROPERTIES; } try { URL url = servletContext.getResource(plexusPropertiesPath); // if the user has not specified the plexus.props file then just return the context if (url == null && plexusPropertiesPath == DEFAULT_PLEXUS_PROPERTIES) { return context; } Properties properties = PropertyUtils.loadProperties(url); if (properties == null) { throw new Exception("Could not locate url: " + url.toString()); } String baseDir = servletContext.getRealPath("/WEB-INF"); if (!StringUtils.isEmpty(baseDir)) { servletContext.log("Setting Plexus context variable " + PLEXUS_HOME + " to: " + baseDir); properties.put(PLEXUS_HOME, baseDir); } else { servletContext.log("CANNOT set Plexus basedir! (are we in unpacked WAR?)"); } RegexBasedInterpolator ip = new RegexBasedInterpolator(); ip.addValueSource(new MapBasedValueSource(properties)); ip.addValueSource(new MapBasedValueSource(System.getProperties())); for (Enumeration n = properties.propertyNames(); n.hasMoreElements(); ) { String propertyKey = (String) n.nextElement(); String propertyValue = ip.interpolate(properties.getProperty(propertyKey), ""); servletContext.log("Added '" + propertyKey + "=" + propertyValue + "' to Plexus context."); context.put(propertyKey, propertyValue); } } catch (Exception e) { throw new RuntimeException( "Could not load plexus context properties from: '" + plexusPropertiesPath + "'", e); } return context; }