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Log4j12ServiceProvider.java
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Log4j12ServiceProvider.java
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package org.slf4j.log4j12;
import org.apache.log4j.Level;
import org.slf4j.ILoggerFactory;
import org.slf4j.IMarkerFactory;
import org.slf4j.helpers.BasicMarkerFactory;
import org.slf4j.helpers.Util;
import org.slf4j.spi.MDCAdapter;
import org.slf4j.spi.SLF4JServiceProvider;
public class Log4j12ServiceProvider implements SLF4JServiceProvider {
/**
* Declare the version of the SLF4J API this implementation is compiled against.
* The value of this field is modified with each major release.
*/
// to avoid constant folding by the compiler, this field must *not* be final
public static String REQUESTED_API_VERSION = "2.0.99"; // !final
private ILoggerFactory loggerFactory;
private IMarkerFactory markerFactory;
private MDCAdapter mdcAdapter;
public Log4j12ServiceProvider() {
try {
@SuppressWarnings("unused")
Level level = Level.TRACE;
} catch (NoSuchFieldError nsfe) {
Util.report("This version of SLF4J requires log4j version 1.2.12 or later. See also http://www.slf4j.org/codes.html#log4j_version");
}
}
@Override
public void initialize() {
loggerFactory = new Log4jLoggerFactory();
markerFactory = new BasicMarkerFactory();
mdcAdapter = new Log4jMDCAdapter();
}
@Override
public ILoggerFactory getLoggerFactory() {
return loggerFactory;
}
@Override
public IMarkerFactory getMarkerFactory() {
return markerFactory;
}
@Override
public MDCAdapter getMDCAdapter() {
return mdcAdapter;
}
@Override
public String getRequestedApiVersion() {
return REQUESTED_API_VERSION;
}
}