Question

这是一个简单的测试代码，它创建三个文档，每个文档都有一个日期字段，然后进行日期范围搜索，期望找到两个文档，但不返回任何文档（环境：Lucene 4.10.3，Java 1.7.0_55，Windows 7 ）。有人可以看看，告诉我是否有什么我做错了。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();
        }
    }
}

Answer 1

我在本地运行测试并发现问题出在 precisionStep 中 - 您没有为precisionStep = 4正确索引。

因此，您可以正确删除查询中的 precisionStep 或索引文档，例如

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));

Lucene 4.10.3数字日期范围查询不返回预期结果

1 个答案: