package org.apache.lucene.collation;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.StringField;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.RandomIndexWriter;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.ConstantScoreQuery;
import org.apache.lucene.search.FieldCacheRangeFilter;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.QueryUtils;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.Sort;
import org.apache.lucene.search.SortField;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.search.BooleanClause.Occur;
import org.apache.lucene.store.Directory;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util._TestUtil;
import org.apache.lucene.util.LuceneTestCase.SuppressCodecs;
import com.ibm.icu.text.Collator;
import com.ibm.icu.util.ULocale;
/**
* trivial test of ICUCollationDocValuesField
*/
@SuppressCodecs("Lucene3x")
public class TestICUCollationDocValuesField extends LuceneTestCase {
public void testBasic() throws Exception {
Directory dir = newDirectory();
RandomIndexWriter iw = new RandomIndexWriter(random(), dir);
Document doc = new Document();
Field field = newField("field", "", StringField.TYPE_STORED);
ICUCollationDocValuesField collationField = new ICUCollationDocValuesField("collated", Collator.getInstance(ULocale.ENGLISH));
doc.add(field);
doc.add(collationField);
field.setStringValue("ABC");
collationField.setStringValue("ABC");
iw.addDocument(doc);
field.setStringValue("abc");
collationField.setStringValue("abc");
iw.addDocument(doc);
IndexReader ir = iw.getReader();
iw.close();
IndexSearcher is = newSearcher(ir);
SortField sortField = new SortField("collated", SortField.Type.STRING);
TopDocs td = is.search(new MatchAllDocsQuery(), 5, new Sort(sortField));
assertEquals("abc", ir.document(td.scoreDocs[0].doc).get("field"));
assertEquals("ABC", ir.document(td.scoreDocs[1].doc).get("field"));
ir.close();
dir.close();
}
public void testRanges() throws Exception {
Directory dir = newDirectory();
RandomIndexWriter iw = new RandomIndexWriter(random(), dir);
Document doc = new Document();
Field field = newField("field", "", StringField.TYPE_STORED);
Collator collator = Collator.getInstance(); // uses -Dtests.locale
if (random().nextBoolean()) {
collator.setStrength(Collator.PRIMARY);
}
ICUCollationDocValuesField collationField = new ICUCollationDocValuesField("collated", collator);
doc.add(field);
doc.add(collationField);
int numDocs = atLeast(500);
for (int i = 0; i < numDocs; i++) {
String value = _TestUtil.randomSimpleString(random());
field.setStringValue(value);
collationField.setStringValue(value);
iw.addDocument(doc);
}
IndexReader ir = iw.getReader();
iw.close();
IndexSearcher is = newSearcher(ir);
int numChecks = atLeast(100);
for (int i = 0; i < numChecks; i++) {
String start = _TestUtil.randomSimpleString(random());
String end = _TestUtil.randomSimpleString(random());
BytesRef lowerVal = new BytesRef(collator.getCollationKey(start).toByteArray());
BytesRef upperVal = new BytesRef(collator.getCollationKey(end).toByteArray());
Query query = new ConstantScoreQuery(FieldCacheRangeFilter.newBytesRefRange("collated", lowerVal, upperVal, true, true));
doTestRanges(is, start, end, query, collator);
}
ir.close();
dir.close();
}
private void doTestRanges(IndexSearcher is, String startPoint, String endPoint, Query query, Collator collator) throws Exception {
QueryUtils.check(query);
// positive test
TopDocs docs = is.search(query, is.getIndexReader().maxDoc());
for (ScoreDoc doc : docs.scoreDocs) {
String value = is.doc(doc.doc).get("field");
assertTrue(collator.compare(value, startPoint) >= 0);
assertTrue(collator.compare(value, endPoint) <= 0);
}
// negative test
BooleanQuery bq = new BooleanQuery();
bq.add(new MatchAllDocsQuery(), Occur.SHOULD);
bq.add(query, Occur.MUST_NOT);
docs = is.search(bq, is.getIndexReader().maxDoc());
for (ScoreDoc doc : docs.scoreDocs) {
String value = is.doc(doc.doc).get("field");
assertTrue(collator.compare(value, startPoint) < 0 || collator.compare(value, endPoint) > 0);
}
}
}