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jAgg

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jAgg - Java Aggregation Operations

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Description

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.

jAgg Web Site

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

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User Reviews

  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Jagg is good! Thanks.

    Posted 06/09/2013
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Additional Project Details

Intended Audience

Information Technology, Science/Research, Developers

Programming Language

Java

Registered

2010-11-04

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