https://issues.apache.org/bugzilla/show_bug.cgi?id=52084
Bug #: 52084
Summary: byte level verifier of SST serialization in various
methods
Product: POI
Version: 3.7
Platform: PC
Status: NEW
Severity: enhancement
Priority: P2
Component: HSSF
AssignedTo: [email protected]
ReportedBy: [email protected]
Classification: Unclassified
Created attachment 27843
--> https://issues.apache.org/bugzilla/attachment.cgi?id=27843
patch file
This bug report is an extracted abstract from the mail 'SSTRecord.serialize()
performance improvement patch for huge hssf output' in the '[email protected]'
ML.
Please use the 'patch' program to patch the files, such as 'patch -p 0
< HOGE.patch'.
I tried to use eclipse to patch them, but I found that any trial will fail.
---
This patch provides new two features.
The first one is a byte level test method named
'testSSTRecord_DigestCheck()' to investigate a hack correctness.
Another one is an enumeration class named 'SerializeFunction' to
dispatch various serialization methods of SST record easily.
Both of the features are introduced into the
org.apache.poi.hssf.record.TestSSTRecord.java.
And some trivial accessibility changes of other methods are also
contained in this patch.
The enum 'SerializeFunction' in default consists of two instances to dispatch
the memory output method 'Memory' and the raw-file based output method
'StreamFile'.
The test method of 'testSSTRecord_DigestCheck()' proves that
there are no differences in the output bytes between the 'Memory'
method and 'StreamFile' method
and their results are identical to the original results
in the message digest of byte.
If you want to check by yourself, please run the whole set of unit
tests (ant test-all?) in the poi project
in which the patch automatically integrates the
'testSSTRecord_DigestCheck()' method.
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