Examples with SumFloatFunction org.apache.lucene.queries.function.valuesource.SumFloatFunction used on opensource projects

Example 1 with SumFloatFunction

use of org.apache.lucene.queries.function.valuesource.SumFloatFunction in project lucene-solr by apache.

the class TestValueSources method testSumFloat.

public void testSumFloat() throws Exception {
    ValueSource vs = new SumFloatFunction(new ValueSource[] { new ConstValueSource(1f), new ConstValueSource(2f) });
    assertHits(new FunctionQuery(vs), new float[] { 3f, 3f });
    assertAllExist(vs);
    vs = new SumFloatFunction(new ValueSource[] { BOGUS_FLOAT_VS, new ConstValueSource(2f) });
    assertNoneExist(vs);
}

Example 2 with SumFloatFunction

use of org.apache.lucene.queries.function.valuesource.SumFloatFunction in project lucene-solr by apache.

the class TestValueSources method testRangeMap.

public void testRangeMap() throws Exception {
    assertHits(new FunctionQuery(new RangeMapFloatFunction(new FloatFieldSource("float"), 5, 6, 1, 0f)), new float[] { 1f, 0f });
    assertHits(new FunctionQuery(new RangeMapFloatFunction(new FloatFieldSource("float"), 5, 6, new SumFloatFunction(new ValueSource[] { new ConstValueSource(1f), new ConstValueSource(2f) }), new ConstValueSource(11f))), new float[] { 3f, 11f });
// TODO: what *should* the rules be for exist() ?
// ((source exists && source in range && target exists) OR (source not in range && default exists)) ?
}

Example 3 with SumFloatFunction

use of org.apache.lucene.queries.function.valuesource.SumFloatFunction in project lucene-solr by apache.

the class TestFunctionQuerySort method testSearchAfterWhenSortingByFunctionValues.

public void testSearchAfterWhenSortingByFunctionValues() throws IOException {
    Directory dir = newDirectory();
    IndexWriterConfig iwc = newIndexWriterConfig(null);
    // depends on docid order
    iwc.setMergePolicy(newLogMergePolicy());
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir, iwc);
    Document doc = new Document();
    Field field = new StoredField("value", 0);
    Field dvField = new NumericDocValuesField("value", 0);
    doc.add(field);
    doc.add(dvField);
    // Save docs unsorted (decreasing value n, n-1, ...)
    final int NUM_VALS = 5;
    for (int val = NUM_VALS; val > 0; val--) {
        field.setIntValue(val);
        dvField.setLongValue(val);
        writer.addDocument(doc);
    }
    // Open index
    IndexReader reader = writer.getReader();
    writer.close();
    IndexSearcher searcher = newSearcher(reader);
    // Trivial ValueSource function that bypasses single field ValueSource sort optimization
    ValueSource src = new SumFloatFunction(new ValueSource[] { new IntFieldSource("value"), new DoubleConstValueSource(1.0D) });
    // ...and make it a sort criterion
    SortField sf = src.getSortField(false).rewrite(searcher);
    Sort orderBy = new Sort(sf);
    // Get hits sorted by our FunctionValues (ascending values)
    Query q = new MatchAllDocsQuery();
    TopDocs hits = searcher.search(q, reader.maxDoc(), orderBy);
    assertEquals(NUM_VALS, hits.scoreDocs.length);
    // Verify that sorting works in general
    int i = 0;
    for (ScoreDoc hit : hits.scoreDocs) {
        int valueFromDoc = Integer.parseInt(reader.document(hit.doc).get("value"));
        assertEquals(++i, valueFromDoc);
    }
    // Now get hits after hit #2 using IS.searchAfter()
    int afterIdx = 1;
    FieldDoc afterHit = (FieldDoc) hits.scoreDocs[afterIdx];
    hits = searcher.searchAfter(afterHit, q, reader.maxDoc(), orderBy);
    // Expected # of hits: NUM_VALS - 2
    assertEquals(NUM_VALS - (afterIdx + 1), hits.scoreDocs.length);
    // Verify that hits are actually "after"
    int afterValue = ((Double) afterHit.fields[0]).intValue();
    for (ScoreDoc hit : hits.scoreDocs) {
        int val = Integer.parseInt(reader.document(hit.doc).get("value"));
        assertTrue(afterValue <= val);
        assertFalse(hit.doc == afterHit.doc);
    }
    reader.close();
    dir.close();
}