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README.md
POI Fast Calc
A Java library to calculate Excel formulas quickly.
This is a fork of Apache POI version 3.16 that serves simply to calculate formulas quickly, it supports XLSX (Excel 2007) row/column limits in the HSSF engine for much faster evaluation than XML-backed XSSF is capable of, with the drawback that it can't read or write XLS/XLSX files from or to disk. Read the email thread with my original proposed patch to upstream poi for background.
To use, add this to your maven pom.xml:
<dependency>
<groupId>com.moparisthebest.poi</groupId>
<artifactId>poi-fast-calc</artifactId>
<version>3.16-SNAPSHOT</version>
</dependency>
The org.apache.poi
package has been renamed com.moparisthebest.poi
and all dependencies removed,
so this can cleanly live aside modern/newer upstream poi forever, and shouldn't ever need to change.