Package org.apache.lucene.replicator

Class IndexAndTaxonomyRevision

java.lang.Object

org.apache.lucene.replicator.IndexAndTaxonomyRevision

All Implemented Interfaces:

Comparable<Revision>, Revision

public class IndexAndTaxonomyRevision
extends Object
implements Revision

A Revision of a single index and taxonomy index files which comprises the list of files from both indexes. This revision should be used whenever a pair of search and taxonomy indexes need to be replicated together to guarantee consistency of both on the replicating (client) side.

See Also:

• IndexRevision

WARNING: This API is experimental and might change in incompatible ways in the next release.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	IndexAndTaxonomyRevision.SnapshotDirectoryTaxonomyWriter	A DirectoryTaxonomyWriter which sets the underlying IndexWriter's IndexDeletionPolicy to SnapshotDeletionPolicy.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	INDEX_SOURCE
static final String	TAXONOMY_SOURCE

Constructor Summary

Constructors

Constructor	Description
IndexAndTaxonomyRevision(IndexWriter indexWriter, IndexAndTaxonomyRevision.SnapshotDirectoryTaxonomyWriter taxoWriter)	Constructor over the given IndexWriter.

Method Summary

Modifier and Type	Method	Description
int	compareTo(String version)	Compares the revision to the given version string.
int	compareTo(Revision o)
Map<String,List<RevisionFile>>	getSourceFiles()	Returns the files that comprise this revision, as a mapping from a source to a list of files.
String	getVersion()	Returns a string representation of the version of this revision.
InputStream	open(String source, String fileName)	Returns an IndexInput for the given fileName and source.
void	release()	Called when this revision can be safely released, i.e.
static Map<String,List<RevisionFile>>	revisionFiles(IndexCommit indexCommit, IndexCommit taxoCommit)	Returns a singleton map of the revision files from the given IndexCommit.
static String	revisionVersion(IndexCommit indexCommit, IndexCommit taxoCommit)	Returns a String representation of a revision's version from the given IndexCommits of the search and taxonomy indexes.
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

INDEX_SOURCE

public static final String INDEX_SOURCE

See Also:

• Constant Field Values

TAXONOMY_SOURCE

public static final String TAXONOMY_SOURCE

See Also:

• Constant Field Values

Constructor Details

IndexAndTaxonomyRevision

public IndexAndTaxonomyRevision(IndexWriter indexWriter,
 IndexAndTaxonomyRevision.SnapshotDirectoryTaxonomyWriter taxoWriter)
                         throws IOException

Constructor over the given IndexWriter. Uses the last IndexCommit found in the Directory managed by the given writer.

Throws:

IOException

Method Details

revisionFiles

public static Map<String,List<RevisionFile>> revisionFiles(IndexCommit indexCommit,
 IndexCommit taxoCommit)
                                                    throws IOException

Returns a singleton map of the revision files from the given IndexCommit.

Throws:

IOException

revisionVersion

public static String revisionVersion(IndexCommit indexCommit,
 IndexCommit taxoCommit)

Returns a String representation of a revision's version from the given IndexCommits of the search and taxonomy indexes.

compareTo

public int compareTo(String version)

Description copied from interface: Revision

Compares the revision to the given version string. Behaves like Comparable.compareTo(Object).

Specified by:

compareTo in interface Revision

compareTo

public int compareTo(Revision o)

Specified by:

compareTo in interface Comparable<Revision>

getVersion

public String getVersion()

Description copied from interface: Revision

Returns a string representation of the version of this revision. The version is used by Revision.compareTo(String) as well as to serialize/deserialize revision information. Therefore it must be self descriptive as well as be able to identify one revision from another.

Specified by:

getVersion in interface Revision

getSourceFiles

public Map<String,List<RevisionFile>> getSourceFiles()

Description copied from interface: Revision

Returns the files that comprise this revision, as a mapping from a source to a list of files.

Specified by:

getSourceFiles in interface Revision

open

public InputStream open(String source,
 String fileName)
                 throws IOException

Description copied from interface: Revision

Returns an IndexInput for the given fileName and source. It is the caller's responsibility to close the IndexInput when it has been consumed.

Specified by:

open in interface Revision

Throws:

IOException

release

public void release()
             throws IOException

Description copied from interface: Revision

Called when this revision can be safely released, i.e. where there are no more references to it.

Specified by:

release in interface Revision

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object