/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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.varia; import org.apache.log4j.spi.Filter; import org.apache.log4j.spi.LoggingEvent; /** This filter drops all logging events.
You can add this filter to the end of a filter chain to
switch from the default "accept all unless instructed otherwise"
filtering behaviour to a "deny all unless instructed otherwise"
behaviour.
@author Ceki Gülcü
@since 0.9.0 */
public class DenyAllFilter extends Filter {
/**
Returns null
as there are no options.
@deprecated We now use JavaBeans introspection to configure
components. Options strings are no longer needed.
*/
public
String[] getOptionStrings() {
return null;
}
/**
No options to set.
@deprecated Use the setter method for the option directly instead
of the generic setOption
method.
*/
public
void setOption(String key, String value) {
}
/**
Always returns the integer constant {@link Filter#DENY}
regardless of the {@link LoggingEvent} parameter.
@param event The LoggingEvent to filter.
@return Always returns {@link Filter#DENY}.
*/
public
int decide(LoggingEvent event) {
return Filter.DENY;
}
}