001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache license, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the license for the specific language governing permissions and 015 * limitations under the license. 016 */ 017 package org.apache.logging.log4j.taglib; 018 019 import javax.servlet.jsp.JspException; 020 import javax.servlet.jsp.PageContext; 021 import javax.servlet.jsp.tagext.BodyTagSupport; 022 import javax.servlet.jsp.tagext.Tag; 023 024 import org.apache.logging.log4j.message.MessageFactory; 025 026 /** 027 * This class implements the {@code <log:setLogger>} tag. 028 * 029 * @since 2.0 030 */ 031 public class SetLoggerTag extends BodyTagSupport { 032 private static final long serialVersionUID = 1L; 033 034 private transient Log4jTaglibLoggerContext loggerContext; 035 036 private transient Object logger; 037 038 private transient MessageFactory factory; 039 040 private String var; 041 042 private int scope; 043 044 public SetLoggerTag() { 045 super(); 046 init(); 047 } 048 049 private void init() { 050 this.logger = null; 051 this.var = null; 052 this.scope = PageContext.PAGE_SCOPE; 053 } 054 055 @Override 056 public void release() { 057 super.release(); 058 this.init(); 059 } 060 061 @Override 062 public void setPageContext(final PageContext pageContext) { 063 super.setPageContext(pageContext); 064 this.loggerContext = Log4jTaglibLoggerContext.getInstance(pageContext.getServletContext()); 065 } 066 067 public void setLogger(final Object logger) { 068 this.logger = logger; 069 } 070 071 public void setFactory(final MessageFactory factory) { 072 this.factory = factory; 073 } 074 075 public void setVar(final String var) { 076 this.var = var; 077 } 078 079 public void setScope(final String scope) { 080 this.scope = TagUtils.getScope(scope); 081 } 082 083 @Override 084 public int doEndTag() throws JspException { 085 final Log4jTaglibLogger logger = TagUtils.resolveLogger(this.loggerContext, this.logger, this.factory); 086 087 if (this.var != null) { 088 this.pageContext.setAttribute(this.var, logger, this.scope); 089 } else { 090 TagUtils.setDefaultLogger(this.pageContext, logger); 091 } 092 093 return Tag.EVAL_PAGE; 094 } 095 }