/
TempDir.java
111 lines (96 loc) · 1.79 KB
/
TempDir.java
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package org.eclipse.birt.data.aggregation.impl;
import java.io.File;
import org.eclipse.birt.data.engine.api.DataEngineThreadLocal;
public class TempDir
{
private static TempDir instance;
private String path;
private TempDir( String path )
{
this.path = path;
}
/**
* called one time during starting up the plugin
* @param path
*/
public static void createInstance( String path )
{
instance = new TempDir( path );
}
/**
* valid only if createInstance is already called
* @return
*/
public static TempDir getInstance( )
{
if( instance == null )
{
String tempDir = System.getProperty( "java.io.tmpdir" )
+ "AggregationPlugin_temp" + File.separator;
File f = new File( tempDir );
if ( f.exists( ) )
{
deleteDirectory( f );
}
instance = new TempDir( tempDir );
}
return instance;
}
public String getPath( )
{
if ( DataEngineThreadLocal.getInstance( ).getPathManager( ) != null )
{
return DataEngineThreadLocal.getInstance( )
.getPathManager( )
.getTempFileName( "AggregationPlugin_temp", 0, null );
}
else
return path;
}
public static void release( )
{
if (instance != null)
{
File f = new File( instance.getPath( ) );
if ( f.exists( ) )
{
deleteDirectory( f );
}
instance = null;
}
}
/**
*
* @param dir
*/
private static void deleteDirectory( File dir )
{
File[] subFiles = dir.listFiles( );
if ( subFiles != null )
{
for ( int i = 0; i < subFiles.length; i++ )
{
if ( subFiles[i].isDirectory( ) )
{
deleteDirectory( subFiles[i] );
}
else
{
safeDelete( subFiles[i] );
}
}
}
safeDelete( dir );
}
/**
*
* @param file
*/
private static void safeDelete( File file )
{
if ( !file.delete( ) )
{
file.deleteOnExit( );
}
}
}