+++ /dev/null
-/*
- * 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;
-
-import org.apache.log4j.spi.Filter;
-import org.apache.log4j.spi.ErrorHandler;
-import org.apache.log4j.spi.LoggingEvent;
-
-/**
- Implement this interface for your own strategies for outputting log
- statements.
-
- @author Ceki Gülcü
-*/
-public interface Appender {
-
- /**
- Add a filter to the end of the filter list.
-
- @since 0.9.0
- */
- void addFilter(Filter newFilter);
-
- /**
- Returns the head Filter. The Filters are organized in a linked list
- and so all Filters on this Appender are available through the result.
-
- @return the head Filter or null, if no Filters are present
- @since 1.1
- */
- public
- Filter getFilter();
-
- /**
- Clear the list of filters by removing all the filters in it.
-
- @since 0.9.0
- */
- public
- void clearFilters();
-
- /**
- Release any resources allocated within the appender such as file
- handles, network connections, etc.
-
- <p>It is a programming error to append to a closed appender.
-
- @since 0.8.4
- */
- public
- void close();
-
- /**
- Log in <code>Appender</code> specific way. When appropriate,
- Loggers will call the <code>doAppend</code> method of appender
- implementations in order to log. */
- public
- void doAppend(LoggingEvent event);
-
-
- /**
- Get the name of this appender.
- @return name, may be null.*/
- public
- String getName();
-
-
- /**
- Set the {@link ErrorHandler} for this appender.
-
- @since 0.9.0
- */
- public
- void setErrorHandler(ErrorHandler errorHandler);
-
- /**
- Returns the {@link ErrorHandler} for this appender.
-
- @since 1.1
- */
- public
- ErrorHandler getErrorHandler();
-
- /**
- Set the {@link Layout} for this appender.
-
- @since 0.8.1
- */
- public
- void setLayout(Layout layout);
-
- /**
- Returns this appenders layout.
-
- @since 1.1
- */
- public
- Layout getLayout();
-
-
- /**
- Set the name of this appender. The name is used by other
- components to identify this appender.
-
- @since 0.8.1
- */
- public
- void setName(String name);
-
- /**
- Configurators call this method to determine if the appender
- requires a layout. If this method returns <code>true</code>,
- meaning that layout is required, then the configurator will
- configure an layout using the configuration information at its
- disposal. If this method returns <code>false</code>, meaning that
- a layout is not required, then layout configuration will be
- skipped even if there is available layout configuration
- information at the disposal of the configurator..
-
- <p>In the rather exceptional case, where the appender
- implementation admits a layout but can also work without it, then
- the appender should return <code>true</code>.
-
- @since 0.8.4 */
- public
- boolean requiresLayout();
-}
git://source.jalview.org / jalview.git / blobdiff