/*
* 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 java.util.HashMap;
import java.util.Map;
import org.apache.log4j.Layout;
import org.apache.log4j.PatternLayout;
import org.apache.log4j.helpers.Option;
import org.apache.log4j.joran.spi.ExecutionContext;
import org.apache.log4j.spi.ErrorItem;
import org.apache.log4j.spi.LoggerRepository;
import org.xml.sax.Attributes;
public class ConversionRuleAction extends Action {
Layout layout;
boolean inError = false;
/**
* Instantiates an layout of the given class and sets its name.
*
*/
public void begin(ExecutionContext ec, String localName, Attributes attributes) {
// Let us forget about previous errors (in this object)
inError = false;
String errorMsg;
String conversionWord =
attributes.getValue(ActionConst.CONVERSION_WORD_ATTRIBUTE);
String converterClass =
attributes.getValue(ActionConst.CONVERTER_CLASS_ATTRIBUTE);
if (Option.isEmpty(conversionWord)) {
inError = true;
errorMsg = "No 'conversionWord' attribute in <conversionRule>";
getLogger().warn(errorMsg);
ec.addError(new ErrorItem(errorMsg));
return;
}
if (Option.isEmpty(converterClass)) {
inError = true;
errorMsg = "No 'converterClass' attribute in <conversionRule>";
getLogger().warn(errorMsg);
ec.addError(new ErrorItem(errorMsg));
return;
}
try {
getLogger().debug(
"About to add conversion rule [{}, {}] to layout", conversionWord, converterClass);
LoggerRepository repository = (LoggerRepository) ec.getObjectStack().get(0);
Map ruleRegistry = (Map) repository.getObject(PatternLayout.PATTERN_RULE_REGISTRY);
if(ruleRegistry == null) {
ruleRegistry = new HashMap();
repository.putObject(PatternLayout.PATTERN_RULE_REGISTRY, ruleRegistry);
}
// put the new rule into the rule registry
ruleRegistry.put(conversionWord, converterClass);
} catch (Exception oops) {
inError = true;
errorMsg = "Could not add conversion rule to PatternLayout.";
getLogger().error(errorMsg, oops);
ec.addError(new ErrorItem(errorMsg));
}
}
/**
* Once the children elements are also parsed, now is the time to activate
* the appender options.
*/
public void end(ExecutionContext ec, String n) {
}
public void finish(ExecutionContext ec) {
}
}