发布于 2016-05-29 00:22:54 | 240 次阅读 | 评论: 0 | 来源: 网友投递
Apache Lucene全文检索引擎工具包
Lucene是apache软件基金会4 jakarta项目组的一个子项目，是一个开放源代码的全文检索引擎工具包，即它不是一个完整的全文检索引擎，而是一个全文检索引擎的架构，提供了完整的查询引擎和索引引擎，部分文本分析引擎（英文与德文两种西方语言）。Lucene的目的是为软件开发人员提供一个简单易用的工具包，以方便的在目标系统中实现全文检索的功能，或者是以此为基础建立起完整的全文检索引擎。
Apache Lucene 6.0.1 发布了，本次更新主要修复6.0.6版本以来的bug，以及有一项新特性。
新特性：
Spatial-extras DateRangePrefixTree's Calendar is now configurable, to
e.g. clear the Gregorian Change Date. Also, toString(cal) is now identical to DateTimeFormatter.ISO_INSTANT.
bug 修复：
LUCENE-7187: Block join queries' Weight#extractTerms(...) implementations should delegate to the wrapped weight.
(Martijn van Groningen)
LUCENE-7209: Fixed explanations of FunctionScoreQuery.
(Adrien Grand)
LUCENE-7232: Fixed InetAddressPoint.newPrefixQuery, which was generating an incorrect query when the prefix length was not a multiple of 8.
(Adrien Grand)
LUCENE-7279: JapaneseTokenizer throws ArrayIndexOutOfBoundsException on some valid inputs
(Mike McCandless)
LUCENE-7188: remove incorrect sanity check in NRTCachingDirectory.listAll() that led to IllegalStateException being thrown when nothing was wrong.
(David Smiley, yonik)
LUCENE-7219: Make queryparser/xml (Point|LegacyNumeric)RangeQuery builders match the underlying queries' (lower|upper)Term optionality logic.
(Kaneshanathan Srivisagan, Christine Poerschke)
LUCENE-7257: Fixed PointValues#size(IndexReader, String), docCount, minPackedValue and maxPackedValue to skip leaves that do not have points rather than raising an IllegalStateException.
(Adrien Grand)
LUCENE-7284: GapSpans needs to implement positionsCost().
(Daniel Bigham, Alan Woodward)
LUCENE-7231: WeightedSpanTermExtractor didn't deal correctly with single-term phrase queries.
(Eva Popenda, Alan Woodward)
LUCENE-7293: Don't try to highlight GeoPoint queries
(Britta Weber, Nick Knize, Mike McCandless, Uwe Schindler)
LUCENE-7223: Improve XXXPoint javadocs to make it clear that you should separately add StoredField if you want to retrieve these field values at search time
(Greg Huber, Robert Muir, Mike McCandless)
下载地址：http://www.apache.org/dyn/closer.lua/lucene/java/6.0.1