How to use

FileAlterationListener

in

org.apache.commons.io.monitor

/**
 * Fire directory/file change events to the registered listeners.
 *
 * @param entry The previous file system entry
 * @param file The current file
 */
private void doMatch(final FileEntry entry, final File file) {
  if (entry.refresh(file)) {
    for (final FileAlterationListener listener : listeners) {
      if (entry.isDirectory()) {
        listener.onDirectoryChange(file);
      } else {
        listener.onFileChange(file);
      }
    }
  }
}

/**
 * Fire directory/file created events to the registered listeners.
 *
 * @param entry The file entry
 */
private void doCreate(final FileEntry entry) {
  for (final FileAlterationListener listener : listeners) {
    if (entry.isDirectory()) {
      listener.onDirectoryCreate(entry.getFile());
    } else {
      listener.onFileCreate(entry.getFile());
    }
  }
  final FileEntry[] children = entry.getChildren();
  for (final FileEntry aChildren : children) {
    doCreate(aChildren);
  }
}

/**
 * Fire directory/file delete events to the registered listeners.
 *
 * @param entry The file entry
 */
private void doDelete(final FileEntry entry) {
  for (final FileAlterationListener listener : listeners) {
    if (entry.isDirectory()) {
      listener.onDirectoryDelete(entry.getFile());
    } else {
      listener.onFileDelete(entry.getFile());
    }
  }
}

/**
 * Check whether the file and its children have been created, modified or deleted.
 */
public void checkAndNotify() {
  /* fire onStart() */
  for (final FileAlterationListener listener : listeners) {
    listener.onStart(this);
  }
  /* fire directory/file events */
  final File rootFile = rootEntry.getFile();
  if (rootFile.exists()) {
    checkAndNotify(rootEntry, rootEntry.getChildren(), listFiles(rootFile));
  } else if (rootEntry.isExists()) {
    checkAndNotify(rootEntry, rootEntry.getChildren(), FileUtils.EMPTY_FILE_ARRAY);
  } else {
    // Didn't exist and still doesn't
  }
  /* fire onStop() */
  for (final FileAlterationListener listener : listeners) {
    listener.onStop(this);
  }
}

/**
 * Check whether the file and its children have been created, modified or deleted.
 */
public void checkAndNotify() {
  /* fire onStart() */
  for (final FileAlterationListener listener : listeners) {
    listener.onStart(this);
  }
  /* fire directory/file events */
  final File rootFile = rootEntry.getFile();
  if (rootFile.exists()) {
    checkAndNotify(rootEntry, rootEntry.getChildren(), listFiles(rootFile));
  } else if (rootEntry.isExists()) {
    checkAndNotify(rootEntry, rootEntry.getChildren(), FileUtils.EMPTY_FILE_ARRAY);
  } else {
    // Didn't exist and still doesn't
  }
  /* fire onStop() */
  for (final FileAlterationListener listener : listeners) {
    listener.onStop(this);
  }
}

/**
 * Fire directory/file delete events to the registered listeners.
 *
 * @param entry The file entry
 */
private void doDelete(FileEntry entry) {
  for (FileAlterationListener listener : listeners) {
    if (entry.isDirectory()) {
      listener.onDirectoryDelete(entry.getFile());
    } else {
      listener.onFileDelete(entry.getFile());
    }
  }
}

/**
 * Fire directory/file change events to the registered listeners.
 *
 * @param entry The previous file system entry
 * @param file The current file
 */
private void doMatch(FileEntry entry, File file) {
  if (entry.refresh(file)) {
    for (FileAlterationListener listener : listeners) {
      if (entry.isDirectory()) {
        listener.onDirectoryChange(file);
      } else {
        listener.onFileChange(file);
      }
    }
  }
}

/**
 * Fire directory/file created events to the registered listeners.
 *
 * @param entry The file entry
 */
private void doCreate(final FileEntry entry) {
  for (final FileAlterationListener listener : listeners) {
    if (entry.isDirectory()) {
      listener.onDirectoryCreate(entry.getFile());
    } else {
      listener.onFileCreate(entry.getFile());
    }
  }
  final FileEntry[] children = entry.getChildren();
  for (final FileEntry aChildren : children) {
    doCreate(aChildren);
  }
}

/**
 * Check whether the file and its chlidren have been created, modified or deleted.
 */
public void checkAndNotify() {
  /* fire onStart() */
  for (FileAlterationListener listener : listeners) {
    listener.onStart(this);
  }
  /* fire directory/file events */
  File rootFile = rootEntry.getFile();
  if (rootFile.exists()) {
    checkAndNotify(rootEntry, rootEntry.getChildren(), listFiles(rootFile));
  } else if (rootEntry.isExists()) {
    checkAndNotify(rootEntry, rootEntry.getChildren(), FileUtils.EMPTY_FILE_ARRAY);
  } else {
    // Didn't exist and still doesn't
  }
  /* fire onStop() */
  for (FileAlterationListener listener : listeners) {
    listener.onStop(this);
  }
}

/**
 * Fire directory/file delete events to the registered listeners.
 *
 * @param entry The file entry
 */
private void doDelete(FileEntry entry) {
  for (FileAlterationListener listener : listeners) {
    if (entry.isDirectory()) {
      listener.onDirectoryDelete(entry.getFile());
    } else {
      listener.onFileDelete(entry.getFile());
    }
  }
}

/**
 * Fire directory/file change events to the registered listeners.
 *
 * @param entry The previous file system entry
 * @param file The current file
 */
private void doMatch(final FileEntry entry, final File file) {
  if (entry.refresh(file)) {
    for (final FileAlterationListener listener : listeners) {
      if (entry.isDirectory()) {
        listener.onDirectoryChange(file);
      } else {
        listener.onFileChange(file);
      }
    }
  }
}

/**
 * Fire directory/file created events to the registered listeners.
 *
 * @param entry The file entry
 */
private void doCreate(FileEntry entry) {
  for (FileAlterationListener listener : listeners) {
    if (entry.isDirectory()) {
      listener.onDirectoryCreate(entry.getFile());
    } else {
      listener.onFileCreate(entry.getFile());
    }
  }
  FileEntry[] children = entry.getChildren();
  for (FileEntry aChildren : children) {
    doCreate(aChildren);
  }
}

/**
 * Check whether the file and its chlidren have been created, modified or deleted.
 */
public void checkAndNotify() {
  /* fire onStart() */
  for (FileAlterationListener listener : listeners) {
    listener.onStart(this);
  }
  /* fire directory/file events */
  File rootFile = rootEntry.getFile();
  if (rootFile.exists()) {
    checkAndNotify(rootEntry, rootEntry.getChildren(), listFiles(rootFile));
  } else if (rootEntry.isExists()) {
    checkAndNotify(rootEntry, rootEntry.getChildren(), FileUtils.EMPTY_FILE_ARRAY);
  } else {
    // Didn't exist and still doesn't
  }
  /* fire onStop() */
  for (FileAlterationListener listener : listeners) {
    listener.onStop(this);
  }
}

/**
 * Fire directory/file delete events to the registered listeners.
 *
 * @param entry The file entry
 */
private void doDelete(final FileEntry entry) {
  for (final FileAlterationListener listener : listeners) {
    if (entry.isDirectory()) {
      listener.onDirectoryDelete(entry.getFile());
    } else {
      listener.onFileDelete(entry.getFile());
    }
  }
}

/**
 * Fire directory/file change events to the registered listeners.
 *
 * @param entry The previous file system entry
 * @param file The current file
 */
private void doMatch(final FileEntry entry, final File file) {
  if (entry.refresh(file)) {
    for (final FileAlterationListener listener : listeners) {
      if (entry.isDirectory()) {
        listener.onDirectoryChange(file);
      } else {
        listener.onFileChange(file);
      }
    }
  }
}

/**
 * Fire directory/file created events to the registered listeners.
 *
 * @param entry The file entry
 */
private void doCreate(final FileEntry entry) {
  for (final FileAlterationListener listener : listeners) {
    if (entry.isDirectory()) {
      listener.onDirectoryCreate(entry.getFile());
    } else {
      listener.onFileCreate(entry.getFile());
    }
  }
  final FileEntry[] children = entry.getChildren();
  for (final FileEntry aChildren : children) {
    doCreate(aChildren);
  }
}

/**
 * Check whether the file and its chlidren have been created, modified or deleted.
 */
public void checkAndNotify() {
  /* fire onStart() */
  for (final FileAlterationListener listener : listeners) {
    listener.onStart(this);
  }
  /* fire directory/file events */
  final File rootFile = rootEntry.getFile();
  if (rootFile.exists()) {
    checkAndNotify(rootEntry, rootEntry.getChildren(), listFiles(rootFile));
  } else if (rootEntry.isExists()) {
    checkAndNotify(rootEntry, rootEntry.getChildren(), FileUtils.EMPTY_FILE_ARRAY);
  } else {
    // Didn't exist and still doesn't
  }
  /* fire onStop() */
  for (final FileAlterationListener listener : listeners) {
    listener.onStop(this);
  }
}

/**
 * Fire directory/file delete events to the registered listeners.
 *
 * @param entry The file entry
 */
private void doDelete(final FileEntry entry) {
  for (final FileAlterationListener listener : listeners) {
    if (entry.isDirectory()) {
      listener.onDirectoryDelete(entry.getFile());
    } else {
      listener.onFileDelete(entry.getFile());
    }
  }
}

/**
 * Fire directory/file change events to the registered listeners.
 *
 * @param entry The previous file system entry
 * @param file The current file
 */
private void doMatch(FileEntry entry, File file) {
  if (entry.refresh(file)) {
    for (FileAlterationListener listener : listeners) {
      if (entry.isDirectory()) {
        listener.onDirectoryChange(file);
      } else {
        listener.onFileChange(file);
      }
    }
  }
}

/**
 * Fire directory/file created events to the registered listeners.
 *
 * @param entry The file entry
 */
private void doCreate(FileEntry entry) {
  for (FileAlterationListener listener : listeners) {
    if (entry.isDirectory()) {
      listener.onDirectoryCreate(entry.getFile());
    } else {
      listener.onFileCreate(entry.getFile());
    }
  }
  FileEntry[] children = entry.getChildren();
  for (FileEntry aChildren : children) {
    doCreate(aChildren);
  }
}