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https://issues.apache.org/jira/browse/LUCENE-2849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Jeroen Vuurens updated LUCENE-2849:
-----------------------------------

    Description: 
I've been trying to run the example PrecisionRecall.java code from Lucene in 
Action II (downloaded the code, so its just as in the book). It gives a 
StringIndexOutOfBoundsException on my machine. 

Figured it out. I copied QualityBenchmark and QualityStats from the Lucene 
source and inserted a debugline to get a view of the argument values in the 
function that throws the exception.

private String fracFormat(String frac) {
int k = frac.indexOf('.');
String s1 = padd+frac.substring(0,k);
int n = Math.max(k,6);
s1 = s1.substring(s1.length()-n);
return s1 + frac.substring(k);
}

This function assumes that a decimal '.' is being used. However, the PC's we 
use over here at uni have a different locale using a ',' for decimals. Think 
you might be able to catch that by using (new 
DecimalFormatSymbols().getDecimalSeparator()) instead of ('.')? 


  was:
I've been trying to run the example PrecisionRecall.java code from Lucene in 
Action II (downloaded the code, so its just as in the book). It gives a 
StringIndexOutOfBoundsException on my machine. 

Figured it out. I copied QualityBenchmark and QualityStats from the Lucene 
source and inserted a debugline to get a view of the argument values in the 
function that throws the exception.

private String fracFormat(String frac) {
int k = frac.indexOf('.');
String s1 = padd+frac.substring(0,k);
int n = Math.max(k,6);
s1 = s1.substring(s1.length()-n);
return s1 + frac.substring(k);
}

This function assumes that a decimal . is being used. However, the PC's we use 
over here at uni have a different locale using a , for decimals. Think you 
might be able to catch that by using 
DecimalFormatSymbols().getDecimalSeperator() instead of '.'? 



> StringIndexOutOfBoundsException on searchtime
> ---------------------------------------------
>
>                 Key: LUCENE-2849
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2849
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: contrib/benchmark
>    Affects Versions: 3.0.2
>         Environment: Windows XP
>            Reporter: Jeroen Vuurens
>            Priority: Minor
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> I've been trying to run the example PrecisionRecall.java code from Lucene in 
> Action II (downloaded the code, so its just as in the book). It gives a 
> StringIndexOutOfBoundsException on my machine. 
> Figured it out. I copied QualityBenchmark and QualityStats from the Lucene 
> source and inserted a debugline to get a view of the argument values in the 
> function that throws the exception.
> private String fracFormat(String frac) {
> int k = frac.indexOf('.');
> String s1 = padd+frac.substring(0,k);
> int n = Math.max(k,6);
> s1 = s1.substring(s1.length()-n);
> return s1 + frac.substring(k);
> }
> This function assumes that a decimal '.' is being used. However, the PC's we 
> use over here at uni have a different locale using a ',' for decimals. Think 
> you might be able to catch that by using (new 
> DecimalFormatSymbols().getDecimalSeparator()) instead of ('.')? 

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