romseygeek commented on a change in pull request #581: LUCENE-3041: QueryVisitor
URL: https://github.com/apache/lucene-solr/pull/581#discussion_r260244078
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File path: lucene/core/src/java/org/apache/lucene/search/PhraseQuery.java
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@@ -284,6 +284,16 @@ public Query rewrite(IndexReader reader) throws
IOException {
}
}
+ @Override
+ public void visit(QueryVisitor visitor) {
+ for (Term term : terms) {
+ QueryVisitor v = visitor.getSubVisitor(BooleanClause.Occur.MUST, this);
Review comment:
The advantage of pulling multiple times is the combination with the null
check, meaning we can short-circuit; it's particularly useful on something like
BooleanQuery or DisjunctionQuery, where if you're say looking to see if there's
a single instance of a particular term or query type, you can stop looking as
soon as you find it rather than having to continue traversing through all the
possibilities
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