com.jalios.jcms.search

Class IndexSnapshotManager

java.lang.Object

com.jalios.jcms.search.IndexSnapshotManager

public class IndexSnapshotManager
extends java.lang.Object

Provide management of lucene index snapshot

Since:

jcms-10.0.5 / JCMS-8395

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	IndexSnapshotManager.UpcomingSnapshotInfo Class holding information about pending snapshot

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	SNAPSHOT_COMPLETE_FILENAME Name of file created in a snapshot directory when it is known to be complete
static java.lang.String	SNAPSHOT_DO_NOT_DELETE_FILENAME Name of file which can be place inside a snapshot directory when it must not be deleted.
static java.lang.String	SNAPSHOTS_DIRNAME Name of directory in WEB-INF/data in which snaphots are stored

Method Summary

Modifier and Type	Method and Description
IndexSnapshotManager.UpcomingSnapshotInfo	createSnapshot() Request asynchronous creation of a new snapshot of all search engine.
static IndexSnapshotManager	getInstance()
java.io.File	getLastCompletedSnapshotDirectory() Retrieve the last snapshot directory which is complete.
boolean	isSnapshotComplete(java.io.File snapshotDir) Check if the specified snaphot is complete

Methods inherited from class java.lang.Object

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

Field Detail

SNAPSHOTS_DIRNAME

public static final java.lang.String SNAPSHOTS_DIRNAME

Name of directory in WEB-INF/data in which snaphots are stored

See Also:

Constant Field Values

SNAPSHOT_COMPLETE_FILENAME

public static final java.lang.String SNAPSHOT_COMPLETE_FILENAME

Name of file created in a snapshot directory when it is known to be complete

See Also:

Constant Field Values

SNAPSHOT_DO_NOT_DELETE_FILENAME

public static final java.lang.String SNAPSHOT_DO_NOT_DELETE_FILENAME

Name of file which can be place inside a snapshot directory when it must not be deleted.

See Also:

Constant Field Values

Method Detail

getInstance

public static IndexSnapshotManager getInstance()

getLastCompletedSnapshotDirectory

public java.io.File getLastCompletedSnapshotDirectory()

Retrieve the last snapshot directory which is complete.

Returns:

a File or null if there it no yet any completed snapshot

isSnapshotComplete

public boolean isSnapshotComplete(java.io.File snapshotDir)

Check if the specified snaphot is complete

Parameters:

snapshotDir - the directory to check

Returns:

true if snapshot is complete, false otherwise

createSnapshot

public IndexSnapshotManager.UpcomingSnapshotInfo createSnapshot()

Request asynchronous creation of a new snapshot of all search engine. If a snapshot is already in progress request is ignored (but return value is still be valid).

Returns:

the information about the snapshot in which it will be stored when completed sucessfully