For more detailed instructions and discussion, see, and Shading a dependency in Maven. Then you declare that Maven module as a dependency inside your project. With that done, the dependencies and shade plugin of the created module must be configured so that the resulting JAR contains all of the Lucene libraries you use. As a quick and dirty solution, you can set up a shell script to merge the Lucene JARs in one before building, but integrating that step in your build process is a better idea.įor instance, to do that in Maven, you should first create a Maven module inside your Maven project, so the module has your Maven project as its parent. Keeping all Lucene in a single module (“Uber-Module”) means combining all Lucene JARs in a single JAR, so the default Java behaviour of assigning a automatic module to that uber JAR just works, because the uber JAR contains the split packages merged. As soon as Lucene will migrate to Java 9 as minimum requirement, we will work on improving that. Latest Lucene Core News Apache Lucene 8.11.0 available (16.Nov) Apache Lucene 8.10.1 available (18. The PyLucene sub project provides Python bindings for Lucene Core. It is therefore recommended to keep all of Lucene in one Uber-Module and not try to split Lucene into several modules. Lucene Core is a Java library providing powerful indexing and search features, as well as spellchecking, hit highlighting and advanced analysis/tokenization capabilities.
If you are migrating your project to Java 9 Jigsaw module system, keep in mind that Lucene currently does not yet support module-info.java declarations of service provider impls (provides statement). The Lucene migration guide provides the first clue (emphasis mine): The exact way to implement it depends on your particular build enviroment, and I don’t know how yours is set up, but nevertheless the basic idea is the same for any build environment. However, there is a workaround that allows using Lucene in JPMS projects. As you may already know, Lucene doesn’t support the Java Platform Module System properly, so it doesn’t define modules and contains split packages, which don’t work well with the module system.
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