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https://issues.apache.org/jira/browse/LUCENE-3570?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Willnauer resolved LUCENE-3570.
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Resolution: Invalid
this isn't an issue since we check for null further downstream and don't access
the FieldSelector anywhere in those IndexReader subclasses. The comment is
correct as it is, we explicitly allow null values to indicate to load all
fields.
thanks for reporting this shin hwei tan, much appreciated!
> Inconsistent comment and code for the method "document(int n, FieldSelector
> fieldSelector)" in the classes
> "org.apache.lucene.index.{IndexReader,FilterIndexReader,SegmentReader}".
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-3570
> URL: https://issues.apache.org/jira/browse/LUCENE-3570
> Project: Lucene - Java
> Issue Type: Bug
> Components: core/index
> Affects Versions: 2.9.3, 2.9.4, 3.0, 3.0.1, 3.0.2, 3.0.3, 3.1, 3.2, 3.3,
> 3.4
> Environment: Platform Independent
> Reporter: SHIN HWEI TAN
> Assignee: Simon Willnauer
> Original Estimate: 5m
> Remaining Estimate: 5m
>
> The method "document" in the "SegmentReader" and "FilterIndexReader" classes
> does not check the "fieldSelector" parameter for "null", whereas the Javadoc
> comment in the abstract superclass "IndexReader" explicitly states the
> parameter "May be null":
> /**
> ...
> * @param fieldSelector The {@link FieldSelector} to use to determine what
> * Fields should be loaded on the Document. May be null, in which
> case
> * all Fields will be loaded.
> ...
> */
> public abstract Document document(int n, FieldSelector fieldSelector)
> throws CorruptIndexException, IOException;
> Suggested Fixes:
> 1. Add code "if (fieldSelector == null) ..." at the beginning of the method
> body in "FilterIndexReader" and "SegmentReader".
> OR
> 2. Remove the part "May be null, in which case all Fields will be loaded"
> from the comment in "IndexReader".
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