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-rw-r--r--gnu/packages/java.scm30
1 files changed, 30 insertions, 0 deletions
diff --git a/gnu/packages/java.scm b/gnu/packages/java.scm
index 572a22767c..d8f5eacc10 100644
--- a/gnu/packages/java.scm
+++ b/gnu/packages/java.scm
@@ -4121,6 +4121,36 @@ for your architecture which is provided by the jsvc package.
This is a part of the Apache Commons Project.")
(license license:asl2.0)))
+(define-public java-javaewah
+ (package
+ (name "java-javaewah")
+ (version "1.1.6")
+ (source (origin
+ (method url-fetch)
+ (uri (string-append "https://github.com/lemire/javaewah/"
+ "archive/JavaEWAH-" version ".tar.gz"))
+ (sha256
+ (base32
+ "1n7j1r1h24wlhwv9zdcj6yqjrhma2ixwyzm15l5vrv6yqjs6753b"))))
+ (build-system ant-build-system)
+ (arguments `(#:jar-name "javaewah.jar"))
+ (inputs
+ `(("java-junit" ,java-junit)
+ ("java-hamcrest-core" ,java-hamcrest-core)))
+ (home-page "https://github.com/lemire/javaewah")
+ (synopsis "Compressed alternative to the Java @code{BitSet} class")
+ (description "This is a word-aligned compressed variant of the Java
+@code{Bitset} class. It provides both a 64-bit and a 32-bit RLE-like
+compression scheme. It can be used to implement bitmap indexes.
+
+The goal of word-aligned compression is not to achieve the best compression,
+but rather to improve query processing time. Hence, JavaEWAH tries to save CPU
+cycles, maybe at the expense of storage. However, the EWAH scheme is always
+more efficient storage-wise than an uncompressed bitmap (as implemented in the
+@code{BitSet} class by Sun).")
+ ;; GPL2.0 derivates are explicitly allowed.
+ (license license:asl2.0)))
+
(define-public antlr2
(package
(name "antlr2")