Examples of MoreLikeThisQuery

org.apache.lucene.queries.mlt.MoreLikeThisQuery
A simple wrapper for MoreLikeThis for use in scenarios where a Query object is required eg in custom QueryParser extensions. At query.rewrite() time the reader is used to construct the actual MoreLikeThis object and obtain the real Query object.
org.apache.lucene.search.similar.MoreLikeThisQuery
A simple wrapper for MoreLikeThis for use in scenarios where a Query object is required eg in custom QueryParser extensions. At query.rewrite() time the reader is used to construct the actual MoreLikeThis object and obtain the real Query object.
org.elasticsearch.common.lucene.search.MoreLikeThisQuery
@author kimchy (shay.banon)

Examples of org.elasticsearch.common.lucene.search.MoreLikeThisQuery

    public void testMoreLikeThis() throws Exception {
        IndexQueryParserService queryParser = queryParser();
        String query = copyToStringFromClasspath("/org/elasticsearch/index/query/mlt.json");
        Query parsedQuery = queryParser.parse(query).query();
        assertThat(parsedQuery, instanceOf(MoreLikeThisQuery.class));
        MoreLikeThisQuery mltQuery = (MoreLikeThisQuery) parsedQuery;
        assertThat(mltQuery.getMoreLikeFields()[0], equalTo("name.first"));
        assertThat(mltQuery.getMoreLikeFields()[1], equalTo("name.last"));
        assertThat(mltQuery.getLikeText(), equalTo("something"));
        assertThat(mltQuery.getMinTermFrequency(), equalTo(1));
        assertThat(mltQuery.getMaxQueryTerms(), equalTo(12));
    }

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Examples of org.elasticsearch.common.lucene.search.MoreLikeThisQuery

        assertThat(booleanQuery.getClauses().length, is(1));


        BooleanClause itemClause = booleanQuery.getClauses()[0];
        assertThat(itemClause.getOccur(), is(BooleanClause.Occur.SHOULD));
        assertThat(itemClause.getQuery(), instanceOf(MoreLikeThisQuery.class));
        MoreLikeThisQuery mltQuery = (MoreLikeThisQuery) itemClause.getQuery();


        // check each Fields is for each item
        for (int id = 1; id <= 4; id++) {
            Fields fields = mltQuery.getLikeFields()[id - 1];
            assertThat(termsToString(fields.terms("name.first")), is(String.valueOf(id)));
            assertThat(termsToString(fields.terms("name.last")), is(String.valueOf(id)));
        }
    }

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Examples of org.elasticsearch.common.lucene.search.MoreLikeThisQuery

        IndexQueryParserService queryParser = queryParser();
        String query = copyToStringFromClasspath("/org/elasticsearch/index/query/mlt-items.json");
        BooleanQuery parsedQuery = (BooleanQuery) queryParser.parse(query).query();


        // get MLT query, other clause is for include/exclude items
        MoreLikeThisQuery mltQuery = (MoreLikeThisQuery) parsedQuery.getClauses()[0].getQuery();


        // all terms must match
        mltQuery.setMinimumShouldMatch("100%");
        mltQuery.setMinWordLen(0);
        mltQuery.setMinDocFreq(0);


        // one document has all values
        MemoryIndex index = new MemoryIndex();
        index.addField("name.first", "apache lucene", new WhitespaceAnalyzer());
        index.addField("name.last", "1 2 3 4", new WhitespaceAnalyzer());


        // two clauses, one for items and one for like_text if set
        BooleanQuery luceneQuery = (BooleanQuery) mltQuery.rewrite(index.createSearcher().getIndexReader());
        BooleanClause[] clauses = luceneQuery.getClauses();


        // check for items
        int minNumberShouldMatch = ((BooleanQuery) (clauses[0].getQuery())).getMinimumNumberShouldMatch();
        assertThat(minNumberShouldMatch, is(4));

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Examples of org.elasticsearch.common.lucene.search.MoreLikeThisQuery

    @Test
    public void testMoreLikeThisBuilder() throws Exception {
        IndexQueryParserService queryParser = queryParser();
        Query parsedQuery = queryParser.parse(moreLikeThisQuery("name.first", "name.last").likeText("something").minTermFreq(1).maxQueryTerms(12)).query();
        assertThat(parsedQuery, instanceOf(MoreLikeThisQuery.class));
        MoreLikeThisQuery mltQuery = (MoreLikeThisQuery) parsedQuery;
        assertThat(mltQuery.getMoreLikeFields()[0], equalTo("name.first"));
        assertThat(mltQuery.getLikeText(), equalTo("something"));
        assertThat(mltQuery.getMinTermFrequency(), equalTo(1));
        assertThat(mltQuery.getMaxQueryTerms(), equalTo(12));
    }

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