jAgg is a Java 5.0 API that supports “group by” operations on Lists of Java objects: aggregate operations such as count, sum, max, min, avg, and many more. It supports Super Aggregation: Rollups, Cube, and Grouping Sets. It supports analytic operations such as lag/lead and row number and more. It also allows custom aggregate and analytic operations.

Features

  • Ability to apply "group by" functionality to an arbitrary List of Objects
  • Specify "group by" properties by making List items Comparable or by supplying a list of property names, like a SQL "group by"
  • 20 Built-in Aggregators: Sum, Count, Avg, Max, Min, Collect, Concat, Correlation, Covariance, CovariancePop, GeometricMean, HarmonicMean, LinearRegression, Mode, Percentile, Product, StdDev, StdDevPop, Variance, VariancePop
  • Customizable Aggregators
  • Parallel processing available
  • Multiset Discrimination
  • Super Aggregation: Rollups, Cube, and Grouping Sets
  • Analytic Functions, including all built-in Aggregators plus 9 Built-in Analytic-only functions

Project Activity

See All Activity >

License

GNU Library or Lesser General Public License version 3.0 (LGPLv3)

Follow jAgg

jAgg Web Site

Other Useful Business Software
Gen AI apps are built with MongoDB Atlas Icon
Gen AI apps are built with MongoDB Atlas

Build gen AI apps with an all-in-one modern database: MongoDB Atlas

MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
Start Free
Rate This Project
Login To Rate This Project

User Ratings

★★★★★
★★★★
★★★
★★
1
0
0
0
0
ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

User Reviews

  • Jagg is good! Thanks.
    1 user found this review helpful.
Read more reviews >

Additional Project Details

Intended Audience

Developers, Information Technology, Science/Research

Programming Language

Java

Related Categories

Java Information Analysis Software, Java Statistics Software

Registered

2010-11-04