/*
- * Copyright 2006 the original author or authors.
- *
+ * Copyright 2005-2010 the original author or authors.
+ *
* 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.wamblee.io;
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
import java.io.File;
import java.io.FileFilter;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
+import java.util.logging.Logger;
/**
* Monitors a directory for changes.
+ * The currernt implementation only checks files not directories and does not check for
+ * modifications in subdirectories.
*
* @author Erik Brakkee
*/
public class DirectoryMonitor {
- private static final Log LOG = LogFactory.getLog(DirectoryMonitor.class);
+ private static final Logger LOG = Logger.getLogger(DirectoryMonitor.class.getName());
private File directory;
* for the same changes.
*/
public void poll() {
- LOG.debug("Polling " + directory);
+ LOG.fine("Polling " + directory);
Map<File, Date> newContents = new HashMap<File, Date>();
File[] files = directory.listFiles(filter);
contents = newContents;
}
+ /**
+ * Listener interface to be provided by users of the directory monitor to get notified of
+ * changes.
+ *
+ * @author Erik Brakkee
+ */
public static interface Listener {
+ /**
+ * @param aFile File that has changed.
+ */
void fileChanged(File aFile);
+ /**
+ * @param aFile File that was created.
+ */
void fileCreated(File aFile);
+ /**
+ * @param aFile File that was deleted.
+ */
void fileDeleted(File aFile);
}
}