/*
* 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.log4j.joran.action;
import org.apache.joran.ExecutionContext;
import org.apache.joran.action.Action;
import org.apache.joran.helper.Option;
import org.apache.log4j.Logger;
import org.apache.log4j.helpers.Loader;
import org.apache.log4j.helpers.OptionConverter;
import org.apache.log4j.spi.ErrorItem;
import org.apache.log4j.spi.LoggerRepository;
import org.xml.sax.Attributes;
import java.lang.reflect.Method;
public class LoggerAction extends Action {
Logger logger = Logger.getLogger(LoggerAction.class);
boolean inError = false;
public void begin(ExecutionContext ec, String name, Attributes attributes) {
// Let us forget about previous errors (in this object)
inError = false;
LoggerRepository repository = (LoggerRepository) ec.getObject(0);
// Create a new org.apache.log4j.Category object from the <category> element.
String loggerName = attributes.getValue(NAME_ATTRIBUTE);
if (Option.isEmpty(loggerName)) {
inError = true;
String line =
", around line " + getLineNumber(ec) + " column "
+ getColumnNumber(ec);
String errorMsg = "No 'name' attribute in element " + name + line;
logger.warn(errorMsg);
ec.addError(new ErrorItem(errorMsg));
return;
}
logger.debug("Logger name is [" + loggerName + "].");
Logger l;
String className = attributes.getValue(CLASS_ATTRIBUTE);
if (Option.isEmpty(className)) {
logger.debug("Retreiving an instance of org.apache.log4j.Logger.");
l = repository.getLogger(loggerName);
} else {
logger.debug("Desired logger sub-class: [" + className + ']');
try {
Class clazz = Loader.loadClass(className);
Method getInstanceMethod =
clazz.getMethod("getLogger", ActionConst.ONE_STRING_PARAM);
l = (Logger) getInstanceMethod.invoke(
null, new Object[] { loggerName });
} catch (Exception oops) {
logger.error(
"Could not retrieve category [" + loggerName
+ "]. Reported error follows.", oops);
return;
}
}
boolean additivity =
OptionConverter.toBoolean(
attributes.getValue(ActionConst.ADDITIVITY_ATTRIBUTE), true);
logger.debug(
"Setting [" + l.getName() + "] additivity to [" + additivity + "].");
l.setAdditivity(additivity);
logger.debug("Pushing logger named [" + loggerName + "].");
ec.pushObject(l);
}
public void end(ExecutionContext ec, String e) {
logger.debug("end() called.");
if (!inError) {
logger.debug("Removing logger from stack.");
ec.popObject();
}
}
public void finish(ExecutionContext ec) {
}
}