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lucene/contrib/CHANGES.txt

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Lucene contrib change Log
======================= Trunk (not yet released) =======================
Changes in backwards compatibility policy
* LUCENE-2100: All Analyzers in Lucene-contrib have been marked as final.
Analyzers should be only act as a composition of TokenStreams, users should
compose their own analyzers instead of subclassing existing ones.
(Simon Willnauer)
Changes in runtime behavior
* LUCENE-2117: SnowballAnalyzer uses TurkishLowerCaseFilter instead of
LowercaseFilter to correctly handle the unique Turkish casing behavior if
used with Version > 3.0 and the TurkishStemmer.
(Robert Muir via Simon Willnauer)
Bug fixes
* LUCENE-2199: ShingleFilter skipped over tri-gram shingles if outputUnigram
was set to false. (Simon Willnauer)
* LUCENE-2068: Fixed ReverseStringFilter which was not aware of supplementary
characters. During reverse the filter created unpaired surrogates, which
will be replaced by U+FFFD by the indexer, but not at query time. The filter
now reverses supplementary characters correctly if used with Version > 3.0.
(Simon Willnauer, Robert Muir)
* LUCENE-2144: Fix InstantiatedIndex to handle termDocs(null)
correctly (enumerate all non-deleted docs). (Karl Wettin via Mike
McCandless)
* LUCENE-2035: TokenSources.getTokenStream() does not assign positionIncrement.
(Christopher Morris via Mark Miller)
API Changes
* LUCENE-2108: Add SpellChecker.close, to close the underlying
reader. (Eirik Bjørsnøs via Mike McCandless)
* LUCENE-2147: Spatial GeoHashUtils now always decode GeoHash strings
with full precision. GeoHash#decode_exactly(String) was merged into
GeoHash#decode(String). (Chris Male, Simon Willnauer)
* LUCENE-2165: Add a constructor to SnowballAnalyzer that takes a Set of
stopwords, and deprecate the String[] one. (Nick Burch via Robert Muir)
New features
* LUCENE-2102: Add a Turkish LowerCase Filter. TurkishLowerCaseFilter handles
Turkish and Azeri unique casing behavior correctly.
(Ahmet Arslan, Robert Muir via Simon Willnauer)
* LUCENE-2039: Add a extensible query parser to contrib/misc.
ExtendableQueryParser enables arbitrary parser extensions based on a
customizable field naming scheme.
(Simon Willnauer)
* LUCENE-2108: Spellchecker now safely supports concurrent modifications to
the spell-index. Threads can safely obtain term suggestions while the spell-
index is rebuild, cleared or reset. Internal IndexSearcher instances remain
open until the last thread accessing them releases the reference.
(Simon Willnauer)
* LUCENE-2067: Add a Czech light stemmer. CzechAnalyzer will now stem words
when Version is set to 3.1 or higher. (Robert Muir)
* LUCENE-2062: Add a Bulgarian analyzer. (Robert Muir, Simon Willnauer)
Build
* LUCENE-2117: SnowballAnalyzer now holds a runtime-dependency on
contrib-analyzers to correctly handle the unique Turkish casing behavior.
(Robert Muir via Simon Willnauer)
* LUCENE-2124: Moved the JDK-based collation support from contrib/collation
into core, and moved the ICU-based collation support into contrib/icu.
(Steven Rowe, Robert Muir)
Optimizations
* LUCENE-2157: DelimitedPayloadTokenFilter no longer copies the buffer
over itsself. Instead it sets only the length. This patch also optimizes
the logic of the filter and uses NIO for IdentityEncoder. (Uwe Schindler)
* LUCENE-2084: Change IndexableBinaryStringTools to work on byte[] and char[]
directly, instead of Byte/CharBuffers, and modify ICUCollationKeyFilter to
take advantage of this for faster performance.
(Steven Rowe, Uwe Schindler, Robert Muir)
* LUCENE-2194: Improve the efficiency of Snowball by not creating 2 new Strings
and 1 new StringBuilder for every word. (Robert Muir)
Test Cases
* LUCENE-2115: Cutover contrib tests to use Java5 generics. (Kay Kay
via Mike McCandless)
======================= Release 3.0.0 2009-11-25 =======================
Changes in backwards compatibility policy
* LUCENE-1257: Change some occurences of StringBuffer in public/protected
APIs of contrib/surround to StringBuilder.
(Paul Elschot via Uwe Schindler)
Changes in runtime behavior
* LUCENE-1966: Modified and cleaned the default Arabic stopwords list used
by ArabicAnalyzer. You'll need to fully re-index any previously created
indexes. (Basem Narmok via Robert Muir)
API Changes
* LUCENE-1936: Deprecated RussianLowerCaseFilter, because it transforms
text exactly the same as LowerCaseFilter. Please use LowerCaseFilter
instead, which has the same functionality. (Robert Muir)
* LUCENE-2051: Contrib Analyzer setters were deprecated and replaced
with ctor arguments / Version number. Also stop word lists
were unified. (Simon Willnauer)
Bug fixes
* LUCENE-1781: Fixed various issues with the lat/lng bounding box
distance filter created for radius search in contrib/spatial.
(Bill Bell via Mike McCandless)
* LUCENE-1939: IndexOutOfBoundsException at ShingleMatrixFilter's
Iterator#hasNext method on exhausted streams.
(Patrick Jungermann via Karl Wettin)
* LUCENE-1359: French analyzer did not support null field names.
(Andrew Lynch via Robert Muir)
New features
* LUCENE-1924: Added BalancedSegmentMergePolicy to contrib/misc,
which is a merge policy that tries to avoid doing very large
segment merges to give better search performance in a mixed
indexing/searching environment. (John Wang via Mike McCandless)
* LUCENE-1959: Add index splitting tools. The IndexSplitter tool works
on multi-segment (non optimized) indexes and it can copy specific
segments out of the index into a new index. It can also list the
segments in the index, and delete specified segments. (Jason Rutherglen via
Mike McCandless). MultiPassIndexSplitter can split any index into
any number of output parts, at the cost of doing multiple passes over
the input index. (Andrzej Bialecki)
* LUCENE-1993: Add maxDocFreq setting to MoreLikeThis, to exclude
from consideration terms that match more than the specified number
of documents. (Christian Steinert via Mike McCandless)
Optimizations
* LUCENE-1965, LUCENE-1962: Arabic-, Persian- and SmartChineseAnalyzer
loads default stopwords only once if accessed for the first time.
Previous versions were loading the stopword files each time a new
instance was created. This might improve performance for applications
creating lots of instances of these Analyzers. (Simon Willnauer)
Documentation
* LUCENE-1916: Translated documentation in the smartcn hhmm package.
(Patricia Peng via Robert Muir)
Build
* LUCENE-1904: Moved wordnet-based synonym support from contrib/memory
into contrib/wordnet. (Robert Muir)
* LUCENE-2031: Moved PatternAnalyzer from contrib/memory into
contrib/analyzers/common, under miscellaneous. (Robert Muir)
======================= Release 2.9.1 2009-11-06 =======================
Changes in backwards compatibility policy
* LUCENE-2002: Add required Version matchVersion argument when
constructing ComplexPhraseQueryParser and default (as of 2.9)
enablePositionIncrements to true to match StandardAnalyzer's
default. Also added required matchVersion to most of the analyzers
(Uwe Schindler, Mike McCandless)
Changes in runtime behavior
* LUCENE-1963: ArabicAnalyzer now lowercases before checking the stopword
list. This has no effect on Arabic text, but if you are using a custom
stopword list that contains some non-Arabic words, you'll need to fully
reindex. (DM Smith via Robert Muir)
Bug fixes
* LUCENE-1953: FastVectorHighlighter: small fragCharSize can cause
StringIndexOutOfBoundsException. (Koji Sekiguchi)
* LUCENE-1929: Highlighter throws exception on NumericRangeQuery and does not
support deprecated RangeQuery. (Mark Miller)
* LUCENE-2001: Wordnet Syns2Index incorrectly parses synonyms that
contain a single quote. (Parag H. Dave via Robert Muir)
* LUCENE-2003: Highlighter doesn't respect position increments other than 1 with
PhraseQuerys. (Uwe Schindler, Mark Miller)
* LUCENE-1954: InstantiatedIndexWriter: Fixed ClassCastException with
NumericField because of incorrect unchecked cast: Document.getFields()
returns List<Fieldable>. (Bernd Fondermann via Uwe Schindler)
* LUCENE-2014: SmartChineseAnalyzer did not properly clear attributes
in WordTokenFilter. If enablePositionIncrements is set for StopFilter,
then this could create invalid position increments, causing IndexWriter
to crash. (Robert Muir, Uwe Schindler)
* LUCENE-2013: SpanRegexQuery does not work with QueryScorer.
(Benjamin Keil via Mark Miller)
======================= Release 2.9.0 2009-09-23 =======================
Changes in runtime behavior
* LUCENE-1505: Local lucene now uses org.apache.lucene.util.NumericUtils for all
number conversion. You'll need to fully re-index any previously created indexes.
This isn't a break in back-compatibility because local Lucene has not yet
been released. (Mike McCandless)
* LUCENE-1758: ArabicAnalyzer now uses the light10 algorithm, has a refined
default stopword list, and lowercases non-Arabic text.
You'll need to fully re-index any previously created indexes. This isn't a
break in back-compatibility because ArabicAnalyzer has not yet been
released. (Robert Muir)
API Changes
* LUCENE-1695: Update the Highlighter to use the new TokenStream API. This issue breaks backwards
compatibility with some public classes. If you have implemented custom Fragmenters or Scorers,
you will need to adjust them to work with the new TokenStream API. Rather than getting passed a
Token at a time, you will be given a TokenStream to init your impl with - store the Attributes
you are interested in locally and access them on each call to the method that used to pass a new
Token. Look at the included updated impls for examples. (Mark Miller)
* LUCENE-1460: Change contrib TokenStreams/Filters to use the new
TokenStream API. (Robert Muir, Michael Busch)
* LUCENE-1775, LUCENE-1903: Change remaining TokenFilters (shingle, prefix-suffix)
to use the new TokenStream API. ShingleFilter is much more efficient now,
it clones much less often and computes the tokens mostly on the fly now.
Also added more tests. (Robert Muir, Michael Busch, Uwe Schindler, Chris Harris)
* LUCENE-1685: The position aware SpanScorer has become the default scorer
for Highlighting. The SpanScorer implementation has replaced QueryScorer
and the old term highlighting QueryScorer has been renamed to
QueryTermScorer. Multi-term queries are also now expanded by default. If
you were previously rewriting the query for multi-term query highlighting,
you should no longer do that (unless you switch to using QueryTermScorer).
The SpanScorer API (now QueryScorer) has also been improved to more closely
match the API of the previous QueryScorer implementation. (Mark Miller)
* LUCENE-1793: Deprecate the custom encoding support in the Greek and Russian
Analyzers. If you need to index text in these encodings, please use Java's
character set conversion facilities (InputStreamReader, etc) during I/O,
so that Lucene can analyze this text as Unicode instead. (Robert Muir)
Bug fixes
* LUCENE-1423: InstantiatedTermEnum#skipTo(Term) throws ArrayIndexOutOfBounds on empty index.
(Karl Wettin)
* LUCENE-1462: InstantiatedIndexWriter did not reset pre analyzed TokenStreams the
same way IndexWriter does. Parts of InstantiatedIndex was not Serializable.
(Karl Wettin)
* LUCENE-1510: InstantiatedIndexReader#norms methods throws NullPointerException on empty index.
(Karl Wettin, Robert Newson)
* LUCENE-1514: ShingleMatrixFilter#next(Token) easily throws a StackOverflowException
due to recursive invocation. (Karl Wettin)
* LUCENE-1548: Fix distance normalization in LevenshteinDistance to
not produce negative distances (Thomas Morton via Mike McCandless)
* LUCENE-1490: Fix latin1 conversion of HALFWIDTH_AND_FULLWIDTH_FORMS
characters to only apply to the correct subset (Daniel Cheng via
Mike McCandless)
* LUCENE-1576: Fix BrazilianAnalyzer to downcase tokens after
StandardTokenizer so that stop words with mixed case are filtered
out. (Rafael Cunha de Almeida, Douglas Campos via Mike McCandless)
* LUCENE-1491: EdgeNGramTokenFilter no longer stops on tokens shorter than minimum n-gram size.
(Todd Teak via Otis Gospodnetic)
* LUCENE-1683: Fixed JavaUtilRegexCapabilities (an impl used by
RegexQuery) to use Matcher.matches() not Matcher.lookingAt() so
that the regexp must match the entire string, not just a prefix.
(Trejkaz via Mike McCandless)
* LUCENE-1792: Fix new query parser to set rewrite method for
multi-term queries. (Luis Alves, Mike McCandless via Michael Busch)
* LUCENE-1828: Fix memory index to call TokenStream.reset() and
TokenStream.end(). (Tim Smith via Michael Busch)
* LUCENE-1912: Fix fast-vector-highlighter issue when two or more
terms are concatenated (Koji Sekiguchi via Mike McCandless)
New features
* LUCENE-1531: Added support for BoostingTermQuery to XML query parser. (Karl Wettin)
* LUCENE-1435: Added contrib/collation, a CollationKeyFilter
allowing you to convert tokens into CollationKeys encoded using
IndexableBinaryStringTools. This allows for faster RangeQuery when
a field needs to use a custom Collator. (Steven Rowe via Mike
McCandless)
* LUCENE-1591: EnWikiDocMaker, LineDocMaker, WriteLineDoc can now
read/write bz2 using Apache commons compress library. This means
you can download the .bz2 export from http://wikipedia.org and
immediately index it. (Shai Erera via Mike McCandless)
* LUCENE-1629: Add SmartChineseAnalyzer to contrib/analyzers. It
improves on CJKAnalyzer and ChineseAnalyzer by handling Chinese
sentences properly. SmartChineseAnalyzer uses a Hidden Markov
Model to tokenize Chinese words in a more intelligent way.
(Xiaoping Gao via Mike McCandless)
* LUCENE-1676: Added DelimitedPayloadTokenFilter class for automatically adding payloads "in-stream" (Grant Ingersoll)
* LUCENE-1578: Support for loading unoptimized readers to the
constructor of InstantiatedIndex. (Karl Wettin)
* LUCENE-1704: Allow specifying the Tidy configuration file when
parsing HTML docs with contrib/ant. (Keith Sprochi via Mike
McCandless)
* LUCENE-1522: Added contrib/fast-vector-highlighter, a new alternative
highlighter. (Koji Sekiguchi via Mike McCandless)
* LUCENE-1740: Added "analyzer" command to Lucli, enabling changing
the analyzer from the default StandardAnalyzer. (Bernd Fondermann
via Mike McCandless)
* LUCENE-1272: Add get/setBoost to MoreLikeThis. (Jonathan
Leibiusky via Mike McCandless)
* LUCENE-1745: Added constructors to JakartaRegexpCapabilities and
JavaUtilRegexCapabilities as well as static flags to support
configuring a RegexCapabilities implementation with the
implementation-specific modifier flags. Allows for callers to
customize the RegexQuery using the implementation-specific options
and fine tune how regular expressions are compiled and
matched. (Marc Zampetti zampettim@aim.com via Mike McCandless)
* LUCENE-1567: Added a new QueryParser framework, that allows
implementing a new query syntax in a flexible and efficient way.
This new QueryParser will be moved to Lucene's core in release
3.0 and will then replace the current core QueryParser, which
has been deprecated with this patch.
(Luis Alves and Adriano Campos via Michael Busch)
* LUCENE-1486: Added ComplexPhraseQueryParser, an extension of QueryParser
that allows a subset of the Lucene query language to be embedded in
PhraseQuerys. Wildcard, Range, and Fuzzy queries, as well as limited
boolean logic, can be used within quote operators with this parser, ie:
"(jo* -john) smyth~". (Mark Harwood via Mark Miller)
* Added web-based demo of functionality in contrib's XML Query Parser
packaged as War file (Mark Harwood)
* LUCENE-1406: Added Arabic analyzer. (Robert Muir via Grant Ingersoll)
* LUCENE-1628: Added Persian analyzer. (Robert Muir)
* LUCENE-1813: Add option to ReverseStringFilter to mark reversed tokens.
(Andrzej Bialecki via Robert Muir)
Optimizations
* LUCENE-1643: Re-use the collation key (RawCollationKey) for
better performance, in ICUCollationKeyFilter. (Robert Muir via
Mike McCandless)
* LUCENE-1794: Implement TokenStream reuse for contrib Analyzers,
and implement reset() for TokenStreams to support reuse. (Robert Muir)
Documentation
* LUCENE-1876: added missing package level documentation for numerous
contrib packages.
(Steven Rowe & Robert Muir)
Build
* LUCENE-1728: Split contrib/analyzers into common and smartcn modules.
Contrib/analyzers now builds an additional lucene-smartcn Jar file. All
smartcn classes are not included in the lucene-analyzers JAR file.
(Robert Muir via Simon Willnauer)
* LUCENE-1829: Fix contrib query parser to properly create javacc files.
(Jan-Pascal and Luis Alves via Michael Busch)
Test Cases
======================= Release 2.4.0 2008-10-06 =======================
Changes in runtime behavior
(None)
API Changes
1.
(None)
Bug fixes
1. LUCENE-1312: Added full support for InstantiatedIndexReader#getFieldNames()
and tests that assert that deleted documents behaves as they should (they did).
(Jason Rutherglen, Karl Wettin)
2. LUCENE-1318: InstantiatedIndexReader.norms(String, b[], int) didn't treat
the array offset right. (Jason Rutherglen via Karl Wettin)
New features
1. LUCENE-1320: ShingleMatrixFilter, multidimensional shingle token filter. (Karl Wettin)
2. LUCENE-1142: Updated Snowball package, org.tartarus distribution revision 500.
Introducing Hungarian, Turkish and Romanian support, updated older stemmers
and optimized (reflectionless) SnowballFilter.
IMPORTANT NOTICE ON BACKWARDS COMPATIBILITY: an index created using the 2.3.2 (or older)
might not be compatible with these updated classes as some algorithms have changed.
(Karl Wettin)
3. LUCENE-1016: TermVectorAccessor, transparent vector space access via stored vectors
or by resolving the inverted index. (Karl Wettin)
Documentation
(None)
Build
(None)
Test Cases
(None)
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