Congratulations! A truly stellar achievement.
Can't wait to dive in! On Sat, 2008-10-11 at 11:50 -0400, Michael McCandless wrote: > Release 2.4.0 of Lucene is now available! > > With 2.4.0 we have relaxed the backwards compatibility policy of the > Fieldable interface: we now allow changes on a case by case basis. > This means any custom classes that implement Fieldable will need to be > updated. This was done to accommodate the new omitTf() method (to do > pure boolean searching). > > Many new features, fixes and optimizations have happened since 2.3, > including: > > * New InstantiatedIndex (contrib/instantiated): RAM-based index that > enables much faster searching than RAMDirectory. > > * New IndexWriter constructors now default autoCommit to false. > > * New commit() method in IndexWriter lets you control when changes > are made visible and permanent in the index. > > * A machine or OS crash, or power loss, while IndexWriter is writing > to an index will no longer corrupt the index. > > * TimeLimitedCollector adds timeout to searches. > > * Delete documents by Query in IndexWriter. > > * Pure boolean indexing (no frequency, positions nor payloads are > indexed) using Field.setOmitTf(). > > * A new Directory implementation, NIOFSDirectory, using java.nio's > APIs to allow multiple threads to read from the same open file > without locking. > > * IndexWriter.expungeDeletes() reclaims disk space from deleted > documents by merging away segments that have deletions. > > * All filters now return a DocIdSet instead of java.util.BitSet, > making filters more efficient and flexible. > > * Searching with a Filter is more efficient: now the filter is > applied to a document before scoring is done. > > * IndexReader can be opened with new readOnly=true mode, which gives > better performance in a multi-threaded environment. > > The detailed changes are here: > > http://lucene.apache.org/java/2_4_0/changes/Changes.html > > Lucene 2.4.0 includes index format changes that are not readable by > older > versions of Lucene. Lucene 2.4.0 can both read and update older Lucene > indexes. Adding to an index with an older format will cause it to be > converted to the newer format. > > Binary and source distributions are available at > http://www.apache.org/dyn/closer.cgi/lucene/java/ > > Lucene artifacts are also available in the Maven2 repository at > http://repo1.maven.org/maven2/org/apache/lucene/ > > > NEXT RELEASE > > The next release will be 2.9. After that will be 3.0, which will > remove all deprecated APIs from 2.9 and will be the first release of > Lucene to require JRE 1.5. The timing on these two releases is not > yet known. > > Mike > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
