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Apache Lucene open-source search software
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Mayya Sharipova 1daf7e7c74
LUCENE-10027 provide leaf sorter from commit (#214) 
Provide leaf sorter for directory readers opened from IndexCommit

LUCENE-9507 allowed to provide a leaf sorter for directory readers.
One API that was missed is to allow to provide a leaf sorter
for directory readers opened from an index commit.
This patch address this by adding an extra parameter: a custom
comparator for sorting leaf readers to the Directory reader open API
from indexCommit and minSupportedMajorVersion.

Relates to PR #32
 		2021-07-30 09:15:21 -04:00
.github Cleanup readme file, doaps and copy build instructions from lucene subfolder (#6) 2021-03-10 16:10:06 +01:00
.muse SOLR-14883 Add a Muse (Continuous assurance platform) configuration (#1901) 2020-09-23 17:42:19 -07:00
buildSrc LUCENE-9977: rat task corrections (proper up-to-date checks, cleanup and rewrite of the task itself). (#178) 2021-06-11 09:26:34 +02:00
dev-docs SOLR-15160 update cloud.sh (#2393) 2021-02-21 14:36:19 -05:00
dev-tools DOAP changes for release 8.9.0 2021-06-17 16:01:03 -04:00
gradle LUCENE-9977: rat task corrections (proper up-to-date checks, cleanup and rewrite of the task itself). (#178) 2021-06-11 09:26:34 +02:00
help LUCENE-9935: Enable bulk merge for stored fields with index sort (#134) 2021-05-12 21:00:18 -04:00
lucene LUCENE-10027 provide leaf sorter from commit (#214) 2021-07-30 09:15:21 -04:00
.asf.yaml titles for github 2021-03-10 12:51:06 +01:00
.dir-locals.el LUCENE-9322: Add Lucene90 codec, including VectorFormat 2020-10-18 07:49:36 -04:00
.git-blame-ignore-revs LUCENE-9570: code reformatting [record rev]. 2021-01-05 13:44:42 +01:00
.gitattributes LUCENE-9077: make git always keep .gradle files with LF EOLs. 2020-04-09 13:55:16 +02:00
.gitignore LUCENE-9920: Remove binary gradle-wrapper.jar from the repository 2021-04-10 16:08:39 +02:00
.hgignore LUCENE-2792: add FST impl 2010-12-12 15:36:08 +00:00
LICENSE LUCENE-9233 Add top level LICENSE file 2020-02-20 20:53:57 +01:00
README.md Add a small clarification about the required Java version for gradle. 2021-05-24 09:59:54 +02:00
build.gradle LUCENE-9915: Add generation/ checksumming task for gen_ForUtil.py (#126) 2021-05-05 22:03:06 +02:00
gradlew Gradle hotfix in preparation for Jenkins: Fix for whitespace in directory violations 2020-08-23 17:51:11 +02:00
gradlew.bat Gradle hotfix in preparation for Jenkins: Fix for whitespace in directory violations 2020-08-23 17:51:11 +02:00
settings.gradle LUCENE-9871: clean up some old cruft and shuffle files around. Correct inputs/outputs on check broken links so that it's incremental. 2021-03-30 10:55:19 +02:00
versions.lock LUCENE-10021: Upgrade HPPC to 0.9.0. Replace usage of ...ScatterMap to ...HashMap (#209) 2021-07-13 14:38:46 +02:00
versions.props LUCENE-10021: Upgrade HPPC to 0.9.0. Replace usage of ...ScatterMap to ...HashMap (#209) 2021-07-13 14:38:46 +02:00

README.md

Apache Lucene

Lucene Logo

Apache Lucene is a high-performance, full featured text search engine library written in Java.

Build Status

Online Documentation

This README file only contains basic setup instructions. For more comprehensive documentation, visit:

Building with Gradle

Basic steps:

  1. Install OpenJDK 11 (or greater up until version 15)
  2. Download Lucene from Apache and unpack it (or clone the git repository).
  3. Run gradle launcher script (gradlew).

Step 0) Set up your development environment (OpenJDK 11 or greater)

We'll assume that you know how to get and set up the JDK - if you don't, then we suggest starting at https://jdk.java.net/ and learning more about Java, before returning to this README. Lucene runs with Java 11 or later.

Lucene uses Gradle for build control. Gradle is itself Java-based and may be incompatible with newer Java versions; you can still build and test Lucene with these Java releases, see help/tests.txt for more information.

NOTE: Lucene changed from Ant to Gradle as of release 9.0. Prior releases still use Ant.

Step 1) Checkout/Download Lucene source code

You can clone the source code from GitHub:

https://github.com/apache/lucene

or get Lucene source archives for a particular release from:

https://lucene.apache.org/core/downloads.html

Download either a zip or a tarred/gzipped version of the archive, and uncompress it into a directory of your choice.

Step 2) Run Gradle

Run "./gradlew help", this will show the main tasks that can be executed to show help sub-topics.

If you want to build Lucene, type:

./gradlew assemble

NOTE: DO NOT use gradle command that is already installed on your machine (unless you know what you'll do). The "gradle wrapper" (gradlew) does the job - downloads the correct version of it, setups necessary configurations.

The first time you run Gradle, it will create a file "gradle.properties" that contains machine-specific settings. Normally you can use this file as-is, but it can be modified if necessary.

./gradlew check will assemble Lucene and run all validation tasks (including unit tests).

./gradlew help will print a list of help guides that help understand how the build and typical workflow works.

If you want to build the documentation, type:

./gradlew documentation

Gradle build and IDE support

  • IntelliJ - IntelliJ idea can import the project out of the box.
  • Eclipse - Basic support (help/IDEs.txt).
  • Netbeans - Not tested.

Contributing

Please review the Contributing to Lucene Guide for information on contributing.

Discussion and Support