/*! ******************************************************************************
*
* Pentaho Data Integration
*
* Copyright (C) 2002-2013 by Pentaho : http://www.pentaho.com
*
*******************************************************************************
*
* 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.pentaho.di.core.logging;
import java.util.ArrayList;
import java.util.List;
import org.apache.log4j.Appender;
import org.apache.log4j.Layout;
import org.apache.log4j.spi.ErrorHandler;
import org.apache.log4j.spi.Filter;
import org.apache.log4j.spi.LoggingEvent;
import org.pentaho.di.core.Const;
/**
* @deprecated please use the centralized CentralLogStore to get your log lines from.
* Pass the log channel id of the parent object that you want the log for.
*
* @author matt
*
*/
@Deprecated
public class Log4jStringAppender implements Appender {
private Layout layout;
private Filter filter;
private String name;
private StringBuffer buffer;
private int nrLines;
private int maxNrLines;
private List<BufferChangedListener> bufferChangedListeners;
public Log4jStringAppender() {
buffer = new StringBuffer();
nrLines = 0;
maxNrLines = -1;
bufferChangedListeners = new ArrayList<BufferChangedListener>();
}
public String toString() {
return buffer.toString();
}
public void addFilter( Filter filter ) {
this.filter = filter;
}
public Filter getFilter() {
return filter;
}
public void clearFilters() {
filter = null;
}
public void close() {
}
public void doAppend( LoggingEvent event ) {
String line = layout.format( event ) + Const.CR;
buffer.append( line );
// See if we don't have too many lines on board...
nrLines++;
if ( maxNrLines > 0 && nrLines > maxNrLines ) {
buffer.delete( 0, line.length() );
nrLines--;
}
for ( BufferChangedListener listener : bufferChangedListeners ) {
listener.contentWasAdded( buffer, line, nrLines );
}
}
public void setName( String name ) {
this.name = name;
}
public String getName() {
return name;
}
public void setErrorHandler( ErrorHandler arg0 ) {
}
public ErrorHandler getErrorHandler() {
return null;
}
public void setLayout( Layout layout ) {
this.layout = layout;
}
public Layout getLayout() {
return layout;
}
public boolean requiresLayout() {
return true;
}
public void setFilter( Filter filter ) {
this.filter = filter;
}
public StringBuffer getBuffer() {
return buffer;
}
public void setBuffer( StringBuffer buffer ) {
this.buffer = buffer;
}
/**
* @return the maximum number of lines that this buffer contains, 0 or lower means: no limit
*/
public int getMaxNrLines() {
return maxNrLines;
}
/**
* @param maxNrLines the maximum number of lines that this buffer should contain, 0 or lower means: no limit
*/
public void setMaxNrLines( int maxNrLines ) {
this.maxNrLines = maxNrLines;
}
/**
* @return the nrLines
*/
public int getNrLines() {
return nrLines;
}
public void addBufferChangedListener( BufferChangedListener bufferChangedListener ) {
bufferChangedListeners.add( bufferChangedListener );
}
public void removeBufferChangedListener( BufferChangedListener bufferChangedListener ) {
bufferChangedListeners.remove( bufferChangedListener );
}
/**
* @param nrLines the nrLines to set
*/
public void setNrLines( int nrLines ) {
this.nrLines = nrLines;
}
}