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https://issues.apache.org/jira/browse/LUCENE-7398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15405698#comment-15405698
]
Paul Elschot commented on LUCENE-7398:
--------------------------------------
The patch of 22:53 hrs works as expected.
This additional test case fails on doc 0, "w1 w2 w3 w4 w5":
{code}
@Test
public void testNestedOrQuerySlop() throws IOException {
SpanNearQuery snq = SpanNearQuery.newOrderedNearQuery(FIELD)
.setSlop(1)
.addClause(new SpanTermQuery(new Term(FIELD, "w1")))
.addClause(new SpanOrQuery(
new SpanTermQuery(new Term(FIELD, "w2")),
SpanNearQuery.newOrderedNearQuery(FIELD)
.addClause(new SpanTermQuery(new Term(FIELD, "w3")))
.addClause(new SpanTermQuery(new Term(FIELD, "w4")))
.build()
))
.addClause(new SpanTermQuery(new Term(FIELD, "w5")))
.build();
Spans spans = snq.createWeight(searcher, false,
1).getSpans(searcher.getIndexReader().leaves().get(0),
SpanWeight.Postings.POSITIONS);
assertEquals(0, spans.advance(0));
assertEquals(Spans.NO_MORE_DOCS, spans.nextDoc());
}
{code}
and it passes when using setSlop(2) instead of setSlop(1).
Perhaps we should also add the above test case with setSlop(2) and a comment
that it actually should pass with setSlop(1).
> Nested Span Queries are buggy
> -----------------------------
>
> Key: LUCENE-7398
> URL: https://issues.apache.org/jira/browse/LUCENE-7398
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/search
> Affects Versions: 5.5, 6.x
> Reporter: Christoph Goller
> Assignee: Alan Woodward
> Priority: Critical
> Attachments: LUCENE-7398.patch, LUCENE-7398.patch,
> TestSpanCollection.java
>
>
> Example for a nested SpanQuery that is not working:
> Document: Human Genome Organization , HUGO , is trying to coordinate gene
> mapping research worldwide.
> Query: spanNear([body:coordinate, spanOr([spanNear([body:gene, body:mapping],
> 0, true), body:gene]), body:research], 0, true)
> The query should match "coordinate gene mapping research" as well as
> "coordinate gene research". It does not match "coordinate gene mapping
> research" with Lucene 5.5 or 6.1, it did however match with Lucene 4.10.4. It
> probably stopped working with the changes on SpanQueries in 5.3. I will
> attach a unit test that shows the problem.
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