/**
* Copyright (C) 2002
*/
package org.objectweb.util.monolog.wrapper.log4j;
import org.apache.log4j.nt.NTEventLogAppender;
import org.apache.log4j.PatternLayout;
import org.objectweb.util.monolog.api.Handler;
import org.objectweb.util.monolog.wrapper.log4j.PatternConverter;
import org.objectweb.util.monolog.api.MonologFactory;
import java.util.HashMap;
import java.util.Map;
/**
* This class is the wrapper to the org.apache.log4j.nt.NTEventLogAppender
*
* @author Sebastien Chassande-Barrioz
* @author Igor Smirnov
*/
public class NTEventLogHandler extends NTEventLogAppender implements Handler {
/**
* This fields contains the properties of the Handler
*/
protected HashMap prop = null;
public NTEventLogHandler() {
super();
}
/**
* It Builds a new NTEventLogHandler. It is needed to specify an handler
* type.
* @param name is the handler name.
*/
public NTEventLogHandler(String name) {
super();
setName(name);
prop = new HashMap();
}
public Map getAttributes() {
return prop;
}
public void setAttributes(Map attributes) {
prop.clear();
prop.putAll(attributes);
Object mf = prop.get("activation");
if (mf != null) {
prop.remove("activation");
setAttribute("activation", mf);
}
}
// IMPLEMENTATION OF THE Handler INTERFACE //
//---------------------------------------------//
public String getType() {
return "ntevent";
}
public String[] getAttributeNames() {
return (String[]) prop.keySet().toArray(new String[0]);
}
public Object getAttribute(String key) {
return prop.get(key);
}
public Object setAttribute(String key, Object value) {
if (prop == null)
prop = new HashMap();
if (!key.equalsIgnoreCase("activation")) {
return prop.put(key, value);
} else if (prop.containsKey(key)) {
return null; //already activated
}
MonologFactory mf = (MonologFactory) value;
String source = (String) prop.get("source");
if (source != null) {
setSource((String) value);
}
String pattern = (String) prop.get(Handler.PATTERN_ATTRIBUTE);
if (pattern != null) {
setLayout(new PatternLayout(PatternConverter.monolog2log4j(pattern)));
}
String level = (String) prop.get(Handler.LEVEL_ATTRIBUTE);
if (level != null && level.length() > 0) {
int levelVal = org.objectweb.util.monolog.wrapper.common.LevelImpl.evaluate(level, mf);
setThreshold(org.apache.log4j.Level.toLevel(levelVal));
}
super.activateOptions();
return null;
}
}