Download JavaEWAH JAR 1.2.3 with all dependencies
The bit array data structure is implemented in Java as the BitSet class. Unfortunately, this fails to scale without compression.
JavaEWAH is a word-aligned compressed variant of the Java bitset class. It uses a 64-bit run-length encoding (RLE) compression scheme.
The goal of word-aligned compression is not to achieve the best compression, but rather to improve query processing time. Hence, we try to save CPU cycles, maybe at the expense of storage. However, the EWAH scheme we implemented is always more efficient storage-wise than an uncompressed bitmap (implemented in Java as the BitSet class). Unlike some alternatives, javaewah does not rely on a patented scheme.
Files of the artifact JavaEWAH version 1.2.3 from the group com.googlecode.javaewah.
Test
Artifact JavaEWAH
Group com.googlecode.javaewah
Version 1.2.3
Last update 08. March 2023
Tags: data cycles bitset without java wise than bitmap implemented variant aligned javaewah always goal query this uncompressed encoding expense rely improve processing alternatives compression word however some scheme rather maybe achieve save scale best storage array does unlike hence class fails efficient more length unfortunately structure patented ewah uses compressed time
Organization not specified
URL http://code.google.com/p/javaewah/
License Apache 2
Dependencies amount 0
Dependencies No dependencies
There are maybe transitive dependencies!
Group com.googlecode.javaewah
Version 1.2.3
Last update 08. March 2023
Tags: data cycles bitset without java wise than bitmap implemented variant aligned javaewah always goal query this uncompressed encoding expense rely improve processing alternatives compression word however some scheme rather maybe achieve save scale best storage array does unlike hence class fails efficient more length unfortunately structure patented ewah uses compressed time
Organization not specified
URL http://code.google.com/p/javaewah/
License Apache 2
Dependencies amount 0
Dependencies No dependencies
There are maybe transitive dependencies!
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Source code of JavaEWAH version 1.2.3
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