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https://issues.apache.org/jira/browse/LUCENE-9128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17013924#comment-17013924
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Michael McCandless commented on LUCENE-9128:
--------------------------------------------
You're welcome [~lingchao]!
> Updating from 7.X to 8.X breaks due to change of TotalHits
> ----------------------------------------------------------
>
> Key: LUCENE-9128
> URL: https://issues.apache.org/jira/browse/LUCENE-9128
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: xia0c
> Priority: Major
>
> When I try to upgrade lucene-core from 7.X to version 8.X. The following code
> breaks.
> {code:java}
> public class TestLucene {
>
> private IndexSearcher searcher;
> public Analyzer analyzer;
>
>
> public void demo(String keyword, int pageNum, int pageSize) throws
> ParseException, IOException {
>
> String[] fields = {"title"};
> MultiFieldQueryParser multiFieldQueryParser = new
> MultiFieldQueryParser(fields, analyzer);
> Query query = multiFieldQueryParser.parse(keyword);
> TopDocs topDocs = searcher.search(query, 100);
> int start = (pageNum - 1) * pageSize;
> int end = (int) Math.min(start + pageSize,topDocs.totalHits);
>
> }
> }
> {code}
> The code should pass, but it throws an error:
> {code:java}
> [ERROR] /TestLucene.java:[26,29] no suitable method found for
> min(int,org.apache.lucene.search.TotalHits)
> [ERROR] method java.lang.Math.min(int,int) is not applicable
> [ERROR] (argument mismatch; org.apache.lucene.search.TotalHits cannot be
> converted to int)
> [ERROR] method java.lang.Math.min(long,long) is not applicable
> [ERROR] (argument mismatch; org.apache.lucene.search.TotalHits cannot be
> converted to long)
> [ERROR] method java.lang.Math.min(float,float) is not applicable
> [ERROR] (argument mismatch; org.apache.lucene.search.TotalHits cannot be
> converted to float)
> [ERROR] method java.lang.Math.min(double,double) is not applicable
> [ERROR] (argument mismatch; org.apache.lucene.search.TotalHits cannot be
> converted to double)
> {code}
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