org.cdlib.xtf.textIndexer

Class IndexSync

Object

IndexSync

public class IndexSync
extends Object

Takes care of copying the differences between a source index and a dest index to make them exactly equal. Doesn't have to scan every data directory and lazy file, since it uses the DocSelCache to get an idea of the subset of things that actually need to be scanned.

Field Summary

Fields

Modifier and Type	Field and Description
private static SimpleDateFormat	dateFormat

Constructor Summary

Constructors

Constructor and Description
IndexSync()

Method Summary

Modifier and Type	Method and Description
private SubDirFilter	calcFilter(String indexName, File srcDir, File dstDir) Determine the sub-directory filter for directory scanning.
static String	newestTime(File dir) Determine the newest file within a directory (or the dir itself if empty) and return a human-readable version of that time.
static String	oldestTime(File dir) Determine the oldest file within a directory (or the dir itself if empty) and return a human-readable version of that time.
void	syncDirs(String indexName, File srcDir, File dstDir) Perform the minimum necessary work to ensure that the contents of dstDir exactly match srcDir.

Methods inherited from class Object

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

Field Detail

dateFormat

private static SimpleDateFormat dateFormat

Constructor Detail

IndexSync

public IndexSync()

Method Detail

syncDirs

public void syncDirs(String indexName,
                     File srcDir,
                     File dstDir)
              throws IOException

Perform the minimum necessary work to ensure that the contents of dstDir exactly match srcDir.

Parameters:

indexName -

Throws:

IOException - If anything goes wrong.

calcFilter

private SubDirFilter calcFilter(String indexName,
                                File srcDir,
                                File dstDir)
                         throws IOException

Determine the sub-directory filter for directory scanning. If the dst is an ancestor of src, we do intelligent filtering; otherwise we scan the whole thing.

Throws:

IOException - If anything goes wrong.

oldestTime

public static String oldestTime(File dir)

Determine the oldest file within a directory (or the dir itself if empty) and return a human-readable version of that time.

newestTime

public static String newestTime(File dir)

Determine the newest file within a directory (or the dir itself if empty) and return a human-readable version of that time.