[英]Lucene 4.10.3 numeric date range query does not return expected results
Here is a simple test code that creates three documents with one date field each, then does date range search, expected to find two documents, but none is returned (environment: Lucene 4.10.3, Java 1.7.0_55, Windows 7). 这是一个简单的测试代码,该代码创建三个文档,每个文档具有一个日期字段,然后进行日期范围搜索,预期会找到两个文档,但不返回任何文档(环境:Lucene 4.10.3,Java 1.7.0_55,Windows 7)。 Could someone have a look and tell me if there's anything I'm doing wrong.
有人可以看看我是否做错了什么。 Slav
斯拉夫
import java.io.File;
import java.io.IOException;
import java.util.Date;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.LongField;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.IndexWriterConfig.OpenMode;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.NumericRangeQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.util.Version;
public class LuceneTest {
private static final java.text.SimpleDateFormat DATE_PARSER = new java.text.SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
private static final String INDEX_PATH = "/tmp/lucene";
private static Date parseDate(String dateSt) {
synchronized(DATE_PARSER) {
try {
return DATE_PARSER.parse(dateSt);
} catch (java.text.ParseException e) {
throw new IllegalArgumentException(e);
}
}
}
public static void main(String[] args) {
try {
//Create an index
Directory dir = FSDirectory.open(new File(INDEX_PATH));
Analyzer analyzer = new StandardAnalyzer();
IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_4_10_2, analyzer);
iwc.setOpenMode(OpenMode.CREATE);
IndexWriter writer = new IndexWriter(dir, iwc);
Document doc = new Document();
doc.add(new LongField("BirthDate", parseDate("1989/11/01 10:11:12").getTime(), Field.Store.YES));
writer.addDocument(doc);
doc = new Document();
doc.add(new LongField("BirthDate", parseDate("1973/03/02 13:14:15").getTime(), Field.Store.YES));
writer.addDocument(doc);
doc = new Document();
doc.add(new LongField("BirthDate", parseDate("1969/01/31 16:17:18").getTime(), Field.Store.YES));
writer.addDocument(doc);
writer.close();
//Now do searching
IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(INDEX_PATH)));
IndexSearcher searcher = new IndexSearcher(reader);
Query query = NumericRangeQuery.newLongRange("BirthDate", 4, parseDate("1969/01/20 00:00:00").getTime(),
parseDate("1973/03/03 00:00:00").getTime(), true, true);
System.out.println("query: " + query);
TopDocs results = searcher.search(query, null, 100);
ScoreDoc[] scoreDocs = results.scoreDocs;
int hits = scoreDocs.length;
int count = results.totalHits;
for(int i = 0; i < hits; i++) {
doc = searcher.doc(scoreDocs[i].doc);
String value = doc.get("BirthDate");
System.out.println(new Date(Long.parseLong(value)));
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
I've run the test locally and found out, that the problem is in precisionStep - you didn't index properly for precisionStep = 4. 我已经在本地运行了测试,发现问题出在precisionStep中 -您没有为precisionStep = 4正确索引。
So, you could remove precisionStep in query at all or index documents properly, like this 因此,您可以像这样完全删除查询中的precisionStep或正确索引文档
final FieldType type = new FieldType();
type.setNumericPrecisionStep(4);
type.setStored(true);
type.setIndexed(true);
type.setNumericType(FieldType.NumericType.LONG);
doc.add(new LongField("BirthDate", parseDate("1969/01/31 16:17:18").getTime(), type));
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