https://issues.apache.org/bugzilla/show_bug.cgi?id=56705
Bug ID: 56705
Summary: [PATCH] XSSFWorkbook.getSheet(String) is slow with
many sheets
Product: POI
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: XSSF
Assignee: [email protected]
Reporter: [email protected]
Created attachment 31802
--> https://issues.apache.org/bugzilla/attachment.cgi?id=31802&action=edit
patch to add a map from name to sheet
XSSFWorkbook.getSheet(String) showed up as a hot-spot in profiling, as the
project I'm on calls it very often to resolve cross-sheet formula references.
Currently it simply walks the list of sheets looking for one with a matching
name. The attached patch adds a map from name to sheet, which reduces the time
our operation spends in this method by about 80%.
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