public void testTermMinMaxBasic() throws Exception { Directory dir = newDirectory(); RandomIndexWriter w = new RandomIndexWriter(random(), dir); Document doc = new Document(); doc.add(newTextField("field", "a b c cc ddd", Field.Store.NO)); w.addDocument(doc); IndexReader r = w.getReader(); Terms terms = MultiFields.getTerms(r, "field"); assertEquals(new BytesRef("a"), terms.getMin()); assertEquals(new BytesRef("ddd"), terms.getMax()); r.close(); w.close(); dir.close(); }
public void testTermMinMaxRandom() throws Exception { Directory dir = newDirectory(); RandomIndexWriter w = new RandomIndexWriter(random(), dir); int numDocs = atLeast(100); BytesRef minTerm = null; BytesRef maxTerm = null; for (int i = 0; i < numDocs; i++) { Document doc = new Document(); Field field = new TextField("field", "", Field.Store.NO); doc.add(field); // System.out.println(" doc " + i); CannedBinaryTokenStream.BinaryToken[] tokens = new CannedBinaryTokenStream.BinaryToken[atLeast(10)]; for (int j = 0; j < tokens.length; j++) { byte[] bytes = new byte[TestUtil.nextInt(random(), 1, 20)]; random().nextBytes(bytes); BytesRef tokenBytes = new BytesRef(bytes); // System.out.println(" token " + tokenBytes); if (minTerm == null || tokenBytes.compareTo(minTerm) < 0) { // System.out.println(" ** new min"); minTerm = tokenBytes; } if (maxTerm == null || tokenBytes.compareTo(maxTerm) > 0) { // System.out.println(" ** new max"); maxTerm = tokenBytes; } tokens[j] = new CannedBinaryTokenStream.BinaryToken(tokenBytes); } field.setTokenStream(new CannedBinaryTokenStream(tokens)); w.addDocument(doc); } IndexReader r = w.getReader(); Terms terms = MultiFields.getTerms(r, "field"); assertEquals(minTerm, terms.getMin()); assertEquals(maxTerm, terms.getMax()); r.close(); w.close(); dir.close(); }