cn.dreampie.common.util.stream.FileRenamer Maven / Gradle / Ivy
package cn.dreampie.common.util.stream;
import cn.dreampie.common.Constant;
import cn.dreampie.log.Logger;
import java.io.File;
import java.io.IOException;
/**
* An interface to provide a pluggable file renaming policy, particularly
* useful to handle naming conflicts with an existing file.
*
* @author Jason Hunter
* @version 1.0, 2002/04/30, initial revision, thanks to Changshin Lee for
* the basic idea
*/
public abstract class FileRenamer {
public final static FileRenamer RENAMER;
private final static Logger logger = Logger.getLogger(FileRenamer.class);
static {
FileRenamer fileRenamer = null;
if (Constant.fileRenamer == null) {
fileRenamer = new DefaultFileRenamer();
} else {
try {
Class renameClass = Class.forName(Constant.fileRenamer);
fileRenamer = (FileRenamer) renameClass.newInstance();
} catch (ClassNotFoundException e) {
logger.error("Could not found FileRenamer Class.", e);
} catch (InstantiationException e) {
logger.error("Could not init FileRenamer Class.", e);
} catch (IllegalAccessException e) {
logger.error("Could not access FileRenamer Class.", e);
}
}
RENAMER = fileRenamer;
}
/**
* Returns a File object holding a new name for the specified file.
*/
public abstract File rename(File f);
protected boolean createNewFile(File f) {
try {
return f.createNewFile();
} catch (IOException ignored) {
return false;
}
}
}