Hello,
I'm seeking some help with a highlighting issue involving the SpanQuery family.
To illustrate my issue, I added a test to the existing HighlighterTest (see
diff, below, against tags/lucene_2_9_1). When this test runs, it fails and the
System.out.println yields this:
Expected: "Sam dislikes most of the food and has to order <B>fish</B> and
<B>chips</B> - however the fish is <B>frozen</B>, not fresh.
Observed: "Sam dislikes most of the food and has to order <B>fish</B> and
<B>chips</B> - however the <B>fish</B> is <B>frozen</B>, not fresh.
That second "fish" doesn't satisfy the query, so I don't expect it to be
highlighted. Can anyone out there offer a good starting point on this one?
Regards,
Mike
Index:
contrib/highlighter/src/test/org/apache/lucene/search/highlight/HighlighterTest.java
===================================================================
---
contrib/highlighter/src/test/org/apache/lucene/search/highlight/HighlighterTest.java
(revision 908726)
+++
contrib/highlighter/src/test/org/apache/lucene/search/highlight/HighlighterTest.java
(working copy)
@@ -173,7 +173,40 @@
"Query in a named field does not result in highlighting when that
field isn't in the query",
s1, highlightField(q, FIELD_NAME, s1));
}
+
+ /*
+ * TODO: Why is that second instance of the term "fish" highlighted? It is
not
+ * followed by the term "chips", so it should not be highlighted.
+ */
+ public void testHighlightingNestedSpans() throws Exception {
+ String pubText = "Sam dislikes most of the food and has to order"
+ + " fish and chips - however the fish is frozen, not
fresh.";
+
+ String fieldName = "SOME_FIELD_NAME";
+
+ SpanOrQuery spanOr = new SpanOrQuery(
+ new SpanTermQuery[] {
+ new SpanTermQuery(new
Term(fieldName, "fish")),
+ new SpanTermQuery(new
Term(fieldName, "term1")),
+ new SpanTermQuery(new
Term(fieldName, "term2")),
+ new SpanTermQuery(new
Term(fieldName, "term3")) });
+
+ SpanNearQuery innerSpanNear = new SpanNearQuery(new SpanQuery[]
{
+ spanOr,
+ new SpanTermQuery(new Term(fieldName, "chips"))
}, 2, true);
+
+ SpanNearQuery query = new SpanNearQuery(new SpanQuery[] {
+ innerSpanNear,
+ new SpanTermQuery(new Term(fieldName,
"frozen")) }, 8, true);
+
+ String expected = "Sam dislikes most of the food and has to order"
+ + " <B>fish</B> and <B>chips</B> - however the fish is
<B>frozen</B>, not fresh.";
+ String observed = highlightField(query, fieldName, pubText);
+ System.out.println("Expected: \"" + expected + "\n" + "Observed:
\"" + observed);
+ assertEquals("Why is that second instance of the term \"fish\"
highlighted?", expected, observed);
+ }
+
/**
* This method intended for use with
<tt>testHighlightingWithDefaultField()</tt>
* @throws InvalidTokenOffsetsException
