| /* |
| * Copyright 1999,2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.jelly.tags.fmt; |
| |
| import org.apache.commons.jelly.JellyContext; |
| |
| |
| /** |
| * Class supporting access to configuration data. |
| * @author <a href="mailto:willievu@yahoo.com">Willie Vu</a> |
| * @version 1.1 |
| */ |
| public class Config { |
| |
| /* |
| * I18N/Formatting actions related configuration data |
| */ |
| |
| /** |
| * Name of configuration setting for application- (as opposed to browser-) |
| * based preferred locale |
| */ |
| public static final String FMT_LOCALE |
| = "org.apache.commons.jelly.tags.fmt.locale"; |
| |
| /** |
| * Name of configuration setting for fallback locale |
| */ |
| public static final String FMT_FALLBACK_LOCALE |
| = "org.apache.commons.jelly.tags.fmt.fallbackLocale"; |
| |
| /** |
| * Name of configuration setting for i18n localization context |
| */ |
| public static final String FMT_LOCALIZATION_CONTEXT |
| = "org.apache.commons.jelly.tags.fmt.localizationContext"; |
| |
| /** |
| * Name of localization setting for time zone |
| */ |
| public static final String FMT_TIME_ZONE |
| = "org.apache.commons.jelly.tags.fmt.timeZone"; |
| |
| |
| /** |
| * Looks up a configuration variable in the given scope. |
| * |
| * <p> The lookup of configuration variables is performed as if each scope |
| * had its own name space, that is, the same configuration variable name |
| * in one scope does not replace one stored in a different scope. |
| * |
| * @param jc Page context in which the configuration variable is to be |
| * looked up |
| * @param name Configuration variable name |
| * @param scope Scope in which the configuration variable is to be looked |
| * up |
| * |
| * @return The <tt>java.lang.Object</tt> associated with the configuration |
| * variable, or null if it is not defined. |
| */ |
| // public static Object get(JellyContext jc, String name, int scope) { |
| // switch (scope) { |
| // case JellyContext.PAGE_SCOPE: |
| // return jc.getAttribute(name + PAGE_SCOPE_SUFFIX, scope); |
| // case JellyContext.REQUEST_SCOPE: |
| // return jc.getAttribute(name + REQUEST_SCOPE_SUFFIX, scope); |
| // case JellyContext.SESSION_SCOPE: |
| // return jc.getAttribute(name + SESSION_SCOPE_SUFFIX, scope); |
| // case JellyContext.APPLICATION_SCOPE: |
| // return jc.getAttribute(name + APPLICATION_SCOPE_SUFFIX, scope); |
| // default: |
| // throw new IllegalArgumentException("unknown scope"); |
| // } |
| // } |
| |
| /** |
| * Looks up a configuration variable in the "request" scope. |
| * |
| * <p> The lookup of configuration variables is performed as if each scope |
| * had its own name space, that is, the same configuration variable name |
| * in one scope does not replace one stored in a different scope. |
| * |
| * @param request Request object in which the configuration variable is to |
| * be looked up |
| * @param name Configuration variable name |
| * |
| * @return The <tt>java.lang.Object</tt> associated with the configuration |
| * variable, or null if it is not defined. |
| */ |
| // public static Object get(ServletRequest request, String name) { |
| // return request.getAttribute(name + REQUEST_SCOPE_SUFFIX); |
| // } |
| |
| /** |
| * Looks up a configuration variable in the "session" scope. |
| * |
| * <p> The lookup of configuration variables is performed as if each scope |
| * had its own name space, that is, the same configuration variable name |
| * in one scope does not replace one stored in a different scope. |
| * |
| * @param session Session object in which the configuration variable is to |
| * be looked up |
| * @param name Configuration variable name |
| * |
| * @return The <tt>java.lang.Object</tt> associated with the configuration |
| * variable, or null if it is not defined. |
| */ |
| // public static Object get(HttpSession session, String name) { |
| // return session.getAttribute(name + SESSION_SCOPE_SUFFIX); |
| // } |
| |
| /** |
| * Looks up a configuration variable in the "application" scope. |
| * |
| * <p> The lookup of configuration variables is performed as if each scope |
| * had its own name space, that is, the same configuration variable name |
| * in one scope does not replace one stored in a different scope. |
| * |
| * @param context Servlet context in which the configuration variable is |
| * to be looked up |
| * @param name Configuration variable name |
| * |
| * @return The <tt>java.lang.Object</tt> associated with the configuration |
| * variable, or null if it is not defined. |
| */ |
| // public static Object get(ServletContext context, String name) { |
| // return context.getAttribute(name + APPLICATION_SCOPE_SUFFIX); |
| // } |
| |
| /** |
| * Sets the value of a configuration variable in the given scope. |
| * |
| * <p> Setting the value of a configuration variable is performed as if |
| * each scope had its own namespace, that is, the same configuration |
| * variable name in one scope does not replace one stored in a different |
| * scope. |
| * |
| * @param jc Page context in which the configuration variable is to be set |
| * @param name Configuration variable name |
| * @param value Configuration variable value |
| * @param scope Scope in which the configuration variable is to be set |
| */ |
| // public static void set(JellyContext jc, String name, Object value, |
| // int scope) { |
| // switch (scope) { |
| // case JellyContext.PAGE_SCOPE: |
| // jc.setAttribute(name + PAGE_SCOPE_SUFFIX, value, scope); |
| // break; |
| // case JellyContext.REQUEST_SCOPE: |
| // jc.setAttribute(name + REQUEST_SCOPE_SUFFIX, value, scope); |
| // break; |
| // case JellyContext.SESSION_SCOPE: |
| // jc.setAttribute(name + SESSION_SCOPE_SUFFIX, value, scope); |
| // break; |
| // case JellyContext.APPLICATION_SCOPE: |
| // jc.setAttribute(name + APPLICATION_SCOPE_SUFFIX, value, scope); |
| // break; |
| // default: |
| // throw new IllegalArgumentException("unknown scope"); |
| // } |
| // } |
| |
| /** |
| * Sets the value of a configuration variable in the "request" scope. |
| * |
| * <p> Setting the value of a configuration variable is performed as if |
| * each scope had its own namespace, that is, the same configuration |
| * variable name in one scope does not replace one stored in a different |
| * scope. |
| * |
| * @param request Request object in which the configuration variable is to |
| * be set |
| * @param name Configuration variable name |
| * @param value Configuration variable value |
| */ |
| // public static void set(ServletRequest request, String name, Object value) { |
| // request.setAttribute(name + REQUEST_SCOPE_SUFFIX, value); |
| // } |
| |
| /** |
| * Sets the value of a configuration variable in the "session" scope. |
| * |
| * <p> Setting the value of a configuration variable is performed as if |
| * each scope had its own namespace, that is, the same configuration |
| * variable name in one scope does not replace one stored in a different |
| * scope. |
| * |
| * @param session Session object in which the configuration variable is to |
| * be set |
| * @param name Configuration variable name |
| * @param value Configuration variable value |
| */ |
| // public static void set(HttpSession session, String name, Object value) { |
| // session.setAttribute(name + SESSION_SCOPE_SUFFIX, value); |
| // } |
| |
| /** |
| * Sets the value of a configuration variable in the "application" scope. |
| * |
| * <p> Setting the value of a configuration variable is performed as if |
| * each scope had its own namespace, that is, the same configuration |
| * variable name in one scope does not replace one stored in a different |
| * scope. |
| * |
| * @param context Servlet context in which the configuration variable is to |
| * be set |
| * @param name Configuration variable name |
| * @param value Configuration variable value |
| */ |
| // public static void set(ServletContext context, String name, Object value) { |
| // context.setAttribute(name + APPLICATION_SCOPE_SUFFIX, value); |
| // } |
| |
| /** |
| * Removes a configuration variable from the given scope. |
| * |
| * <p> Removing a configuration variable is performed as if each scope had |
| * its own namespace, that is, the same configuration variable name in one |
| * scope does not impact one stored in a different scope. |
| * |
| * @param jc Page context from which the configuration variable is to be |
| * removed |
| * @param name Configuration variable name |
| * @param scope Scope from which the configuration variable is to be |
| * removed |
| */ |
| // public static void remove(JellyContext jc, String name, int scope) { |
| // switch (scope) { |
| // case JellyContext.PAGE_SCOPE: |
| // jc.removeAttribute(name + PAGE_SCOPE_SUFFIX, scope); |
| // break; |
| // case JellyContext.REQUEST_SCOPE: |
| // jc.removeAttribute(name + REQUEST_SCOPE_SUFFIX, scope); |
| // break; |
| // case JellyContext.SESSION_SCOPE: |
| // jc.removeAttribute(name + SESSION_SCOPE_SUFFIX, scope); |
| // break; |
| // case JellyContext.APPLICATION_SCOPE: |
| // jc.removeAttribute(name + APPLICATION_SCOPE_SUFFIX, scope); |
| // break; |
| // default: |
| // throw new IllegalArgumentException("unknown scope"); |
| // } |
| // } |
| |
| /** |
| * Removes a configuration variable from the "request" scope. |
| * |
| * <p> Removing a configuration variable is performed as if each scope had |
| * its own namespace, that is, the same configuration variable name in one |
| * scope does not impact one stored in a different scope. |
| * |
| * @param request Request object from which the configuration variable is |
| * to be removed |
| * @param name Configuration variable name |
| */ |
| // public static void remove(ServletRequest request, String name) { |
| // request.removeAttribute(name + REQUEST_SCOPE_SUFFIX); |
| // } |
| |
| /** |
| * Removes a configuration variable from the "session" scope. |
| * |
| * <p> Removing a configuration variable is performed as if each scope had |
| * its own namespace, that is, the same configuration variable name in one |
| * scope does not impact one stored in a different scope. |
| * |
| * @param session Session object from which the configuration variable is |
| * to be removed |
| * @param name Configuration variable name |
| */ |
| // public static void remove(HttpSession session, String name) { |
| // session.removeAttribute(name + SESSION_SCOPE_SUFFIX); |
| // } |
| |
| /** |
| * Removes a configuration variable from the "application" scope. |
| * |
| * <p> Removing a configuration variable is performed as if each scope had |
| * its own namespace, that is, the same configuration variable name in one |
| * scope does not impact one stored in a different scope. |
| * |
| * @param context Servlet context from which the configuration variable is |
| * to be removed |
| * @param name Configuration variable name |
| */ |
| // public static void remove(ServletContext context, String name) { |
| // context.removeAttribute(name + APPLICATION_SCOPE_SUFFIX); |
| // } |
| |
| /** |
| * Finds the value associated with a specific configuration setting |
| * identified by its context initialization parameter name. |
| * |
| * <p> For each of the JSP scopes (page, request, session, application), |
| * get the value of the configuration variable identified by <tt>name</tt> |
| * using method <tt>get()</tt>. Return as soon as a non-null value is |
| * found. If no value is found, get the value of the context initialization |
| * parameter identified by <tt>name</tt>. |
| * |
| * @param jc Page context in which the configuration setting is to be |
| * searched |
| * @param name Context initialization parameter name of the configuration |
| * setting |
| * |
| * @return The <tt>java.lang.Object</tt> associated with the configuration |
| * setting identified by <tt>name</tt>, or null if it is not defined. |
| */ |
| // public static Object find(JellyContext jc, String name) { |
| // Object ret = jc.getVariable(name, JellyContext.PAGE_SCOPE); |
| // if (ret == null) { |
| // ret = get(jc, name, JellyContext.REQUEST_SCOPE); |
| // if (ret == null) { |
| // if (jc.getSession() != null) { |
| // // check session only if a session is present |
| // ret = get(jc, name, JellyContext.SESSION_SCOPE); |
| // } |
| // if (ret == null) { |
| // ret = get(jc, name, JellyContext.APPLICATION_SCOPE); |
| // if (ret == null) { |
| // ret = jc.getServletContext().getInitParameter(name); |
| // } |
| // } |
| // } |
| // } |
| // |
| // return ret; |
| // } |
| } |