| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.ofbiz.base.util; |
| |
| import javax.servlet.ServletContext; |
| |
| /** |
| * Misc J2EE Compatibility Utility Functions |
| * |
| */ |
| public class UtilJ2eeCompat { |
| |
| public static final String module = UtilJ2eeCompat.class.getName(); |
| |
| public static final String TOMCAT = "apache tomcat"; |
| public static final String ORION = "orion"; |
| public static final String RESIN = "resin"; |
| public static final String REX_IP = "tradecity"; |
| public static final String OC4J = "oracle"; |
| public static final String JRUN = "jrun"; |
| public static final String JETTY = "jetty"; |
| public static final String WEBSPHERE = "websphere"; |
| |
| protected static Boolean doFlushOnRenderValue = null; |
| protected static Boolean useOutputStreamNotWriterValue = null; |
| protected static Boolean useNestedJspException = null; |
| |
| public static boolean doFlushOnRender(ServletContext context) { |
| initCompatibilityOptions(context); |
| return doFlushOnRenderValue.booleanValue(); |
| } |
| |
| public static boolean useOutputStreamNotWriter(ServletContext context) { |
| initCompatibilityOptions(context); |
| return useOutputStreamNotWriterValue.booleanValue(); |
| } |
| |
| public static boolean useNestedJspException(ServletContext context) { |
| initCompatibilityOptions(context); |
| return useNestedJspException.booleanValue(); |
| } |
| |
| protected static void initCompatibilityOptions(ServletContext context) { |
| // this check to see if we should flush is done because on most servers this |
| // will just slow things down and not solve any problems, but on Tomcat, Orion, etc it is necessary |
| if (useOutputStreamNotWriterValue == null || doFlushOnRenderValue == null) { |
| boolean doflush = true; |
| boolean usestream = true; |
| boolean nestjspexception = true; |
| // if context is null use an empty string here which will cause the defaults to be used |
| String serverInfo = context == null ? "" : context.getServerInfo().toLowerCase(); |
| |
| Debug.logInfo("serverInfo: " + serverInfo, module); |
| |
| if (serverInfo.indexOf(RESIN) >= 0) { |
| Debug.logImportant("Resin detected, disabling the flush on the region render from PageContext for better performance", module); |
| doflush = false; |
| } else if (serverInfo.indexOf(REX_IP) >= 0) { |
| Debug.logImportant("Trade City RexIP detected, using response.getWriter to write text out instead of response.getOutputStream", module); |
| usestream = false; |
| } else if (serverInfo.indexOf(TOMCAT) >= 0) { |
| Debug.logImportant("Apache Tomcat detected, using response.getWriter to write text out instead of response.getOutputStream", module); |
| usestream = false; |
| } else if (serverInfo.indexOf(JRUN) >= 0) { |
| Debug.logImportant("JRun detected, using response.getWriter to write text out instead of response.getOutputStream", module); |
| usestream = false; |
| } else if (serverInfo.indexOf(JETTY) >= 0) { |
| Debug.logImportant("Jetty detected, using response.getWriter to write text out instead of response.getOutputStream", module); |
| usestream = false; |
| } else if (serverInfo.indexOf(ORION) >= 0) { |
| Debug.logImportant("Orion detected, using response.getWriter to write text out instead of response.getOutputStream", module); |
| usestream = false; |
| Debug.logImportant("Orion detected, using non-nested JspException", module); |
| nestjspexception = false; |
| } else if (serverInfo.indexOf(WEBSPHERE) >= 0) { |
| Debug.logImportant("IBM Websphere Application Server detected, using response.getWriter to write text out instead of response.getOutputStream", module); |
| usestream = false; |
| } |
| |
| doFlushOnRenderValue = Boolean.valueOf(doflush); |
| useOutputStreamNotWriterValue = Boolean.valueOf(usestream); |
| useNestedJspException = Boolean.valueOf(nestjspexception); |
| } |
| } |
| } |