Class AgeFileFilter

java.lang.Object
org.apache.commons.vfs2.filter.AgeFileFilter
All Implemented Interfaces:
Serializable, FileFilter
public class AgeFileFilter extends Object implements FileFilter, Serializable
Filters files based on a cutoff time, can filter either newer files or files equal to or older.

For example, to print all files and directories in the current directory older than one day: 

FileSystemManager fsManager = VFS.getManager();
FileObject dir = fsManager.toFileObject(new File("."));
// We are interested in files older than one day
long cutoff = System.currentTimeMillis() - (24 * 60 * 60 * 1000);
AgeFileFilter filter = new AgeFileFilter(cutoff);
FileObject[] files = dir.findFiles(new FileFilterSelector(filter));
for (int i = 0; i < files.length; i++) {
    System.out.println(files[i]);
}
Since:
2.4
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    private final boolean
    acceptOlder
    Whether the files accepted will be older or newer.
    private final long
    cutoff
    The cutoff time threshold.
    private static final long
    serialVersionUID
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    AgeFileFilter(long cutoff)
    Constructs a new age file filter for files equal to or older than a certain cutoff.
    AgeFileFilter(long cutoff, boolean acceptOlder)
    Constructs a new age file filter for files on any one side of a certain cutoff.
    AgeFileFilter(Date cutoffDate)
    Constructs a new age file filter for files older than (at or before) a certain cutoff date.
    AgeFileFilter(Date cutoffDate, boolean acceptOlder)
    Constructs a new age file filter for files on any one side of a certain cutoff date.
    AgeFileFilter(FileObject cutoffReference)
    Constructs a new age file filter for files older than (at or before) a certain File (whose last modification time will be used as reference).
    AgeFileFilter(FileObject cutoffReference, boolean acceptOlder)
    Constructs a new age file filter for files on any one side of a certain File (whose last modification time will be used as reference).

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    accept(FileSelectInfo fileInfo)
    Checks to see if the last modification of the file matches cutoff favorably.
    private static boolean
    isFileNewer(FileObject fileObject, long timeMillis)
    Tests if the specified File is newer than the specified time reference.
    String
    toString()
    Provide a String representaion of this file filter.

    Methods inherited from class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

  • Field Details

    • serialVersionUID

      private static final long serialVersionUID
      See Also:

    • acceptOlder

      private final boolean acceptOlder
      Whether the files accepted will be older or newer.

    • cutoff

      private final long cutoff
      The cutoff time threshold.

  • Constructor Details

    • AgeFileFilter

      public AgeFileFilter(Date cutoffDate)
      Constructs a new age file filter for files older than (at or before) a certain cutoff date.
      Parameters:
      cutoffDate - the threshold age of the files

    • AgeFileFilter

      public AgeFileFilter(Date cutoffDate, boolean acceptOlder)
      Constructs a new age file filter for files on any one side of a certain cutoff date.
      Parameters:
      cutoffDate - the threshold age of the files
      acceptOlder - if true, older files (at or before the cutoff) are accepted, else newer ones (after the cutoff).

    • AgeFileFilter

      public AgeFileFilter(FileObject cutoffReference) throws FileSystemException
      Constructs a new age file filter for files older than (at or before) a certain File (whose last modification time will be used as reference).
      Parameters:
      cutoffReference - the file whose last modification time is usesd as the threshold age of the files
      Throws:
      FileSystemException - Error reading the last modification time from the reference file object.

    • AgeFileFilter

      public AgeFileFilter(FileObject cutoffReference, boolean acceptOlder) throws FileSystemException
      Constructs a new age file filter for files on any one side of a certain File (whose last modification time will be used as reference).
      Parameters:
      cutoffReference - the file whose last modification time is usesd as the threshold age of the files
      acceptOlder - if true, older files (at or before the cutoff) are accepted, else newer ones (after the cutoff).
      Throws:
      FileSystemException - Error reading the last modification time from the reference file object.

    • AgeFileFilter

      public AgeFileFilter(long cutoff)
      Constructs a new age file filter for files equal to or older than a certain cutoff.
      Parameters:
      cutoff - the threshold age of the files

    • AgeFileFilter

      public AgeFileFilter(long cutoff, boolean acceptOlder)
      Constructs a new age file filter for files on any one side of a certain cutoff.
      Parameters:
      cutoff - the threshold age of the files
      acceptOlder - if true, older files (at or before the cutoff) are accepted, else newer ones (after the cutoff).

  • Method Details

    • isFileNewer

      private static boolean isFileNewer(FileObject fileObject, long timeMillis) throws FileSystemException
      Tests if the specified File is newer than the specified time reference.
      Parameters:
      fileObject - the File of which the modification date must be compared, must not be null
      timeMillis - the time reference measured in milliseconds since the epoch (00:00:00 GMT, January 1, 1970)
      Returns:
      true if the File exists and has been modified after the given time reference.
      Throws:
      FileSystemException - Thrown for file system errors.
      IllegalArgumentException - if the file is null

    • accept

      public boolean accept(FileSelectInfo fileInfo) throws FileSystemException
      Checks to see if the last modification of the file matches cutoff favorably.

      If last modification time equals cutoff and newer files are required, file IS NOT selected. If last modification time equals cutoff and older files are required, file IS selected.

      Specified by:
      accept in interface FileFilter
      Parameters:
      fileInfo - the File to check
      Returns:
      true if the file name matches
      Throws:
      FileSystemException - Thrown for file system errors.

    • toString

      public String toString()
      Provide a String representaion of this file filter.
      Overrides:
      toString in class Object
      Returns:
      a String representaion