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https://issues.apache.org/jira/browse/LUCENE-1257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12767617#action_12767617
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Uwe Schindler commented on LUCENE-1257:
---------------------------------------
bq. What's the version of javacc being used/suggested currently ( the latest
release seems to be 5.0 ) .
*From BUILD.txt* (I suggest to use this version 4.1, e.g. 4.2 has a bug that
corrupts the parser somehow):
Step 3) Install JavaCC
Building the Lucene distribution from the source does not require the JavaCC
parser generator, but if you wish to regenerate any of the pre-generated
parser pieces, you will need to install JavaCC. Version 4.1 is tested to
work correctly.
http://javacc.dev.java.net
Follow the download links and download the zip file to a temporary
location on your file system.
After JavaCC is installed, create a build.properties file
(as in step 2), and add the line
javacc.home=/javacc
where this points to the root directory of your javacc installation
(the directory that contains bin/lib/javacc.jar).
> Port to Java5
> -------------
>
> Key: LUCENE-1257
> URL: https://issues.apache.org/jira/browse/LUCENE-1257
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Analysis, Examples, Index, Other, Query/Scoring,
> QueryParser, Search, Store, Term Vectors
> Affects Versions: 3.0
> Reporter: Cédric Champeau
> Assignee: Uwe Schindler
> Priority: Minor
> Fix For: 3.0
>
> Attachments: instantiated_fieldable.patch,
> LUCENE-1257-BooleanQuery.patch, LUCENE-1257-BooleanScorer_2.patch,
> LUCENE-1257-BufferedDeletes_DocumentsWriter.patch,
> LUCENE-1257-CheckIndex.patch, LUCENE-1257-CloseableThreadLocal.patch,
> LUCENE-1257-CompoundFileReaderWriter.patch,
> LUCENE-1257-ConcurrentMergeScheduler.patch,
> LUCENE-1257-DirectoryReader.patch,
> LUCENE-1257-DisjunctionMaxQuery-more_type_safety.patch,
> LUCENE-1257-DocFieldProcessorPerThread.patch, LUCENE-1257-Document.patch,
> LUCENE-1257-FieldCacheImpl.patch, LUCENE-1257-FieldCacheRangeFilter.patch,
> LUCENE-1257-IndexDeleter.patch,
> LUCENE-1257-IndexDeletionPolicy_IndexFileDeleter.patch, LUCENE-1257-iw.patch,
> LUCENE-1257-MTQWF.patch, LUCENE-1257-NormalizeCharMap.patch,
> LUCENE-1257-o.a.l.util.patch, LUCENE-1257-org_apache_lucene_document.patch,
> LUCENE-1257-org_apache_lucene_document.patch,
> LUCENE-1257-org_apache_lucene_document.patch, LUCENE-1257-SegmentInfos.patch,
> LUCENE-1257-StringBuffer.patch, LUCENE-1257-StringBuffer.patch,
> LUCENE-1257-StringBuffer.patch, LUCENE-1257-TopDocsCollector.patch,
> LUCENE-1257-WordListLoader.patch, LUCENE-1257_analysis.patch,
> LUCENE-1257_BooleanFilter_Generics.patch, LUCENE-1257_messages.patch,
> LUCENE-1257_o.a.l.queryParser.patch, LUCENE-1257_o.a.l.store.patch,
> LUCENE-1257_o_a_l_index_test.patch, LUCENE-1257_o_a_l_index_test.patch,
> LUCENE-1257_o_a_l_search.patch, LUCENE-1257_o_a_l_search_spans.patch,
> LUCENE-1257_org_apache_lucene_index.patch,
> LUCENE-1257_org_apache_lucene_index.patch, lucene1257surround1.patch,
> lucene1257surround1.patch, shinglematrixfilter_generified.patch
>
>
> For my needs I've updated Lucene so that it uses Java 5 constructs. I know
> Java 5 migration had been planned for 2.1 someday in the past, but don't know
> when it is planned now. This patch against the trunk includes :
> - most obvious generics usage (there are tons of usages of sets, ... Those
> which are commonly used have been generified)
> - PriorityQueue generification
> - replacement of indexed for loops with for each constructs
> - removal of unnececessary unboxing
> The code is to my opinion much more readable with those features (you
> actually *know* what is stored in collections reading the code, without the
> need to lookup for field definitions everytime) and it simplifies many
> algorithms.
> Note that this patch also includes an interface for the Query class. This has
> been done for my company's needs for building custom Query classes which add
> some behaviour to the base Lucene queries. It prevents multiple unnnecessary
> casts. I know this introduction is not wanted by the team, but it really
> makes our developments easier to maintain. If you don't want to use this,
> replace all /Queriable/ calls with standard /Query/.
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