Question

我在elasticsearch中的文档映射中有一个日期字段，名为conversationSMPostDate，


"conversationSMPostDate": {
"format": "yyyy-MM-dd HH:mm:ss",
"type": "date"
}

我希望在午夜至晚上9点的时间范围内获取有关数据的统计数据。

我尝试使用过滤器组合多个通配符，但没有成功。我搜索过，找不到办法做到这一点。我想做类似的事情 elasticsearch: getMinuteOfDay() applied to time() in date range filter

Answer 1

您好我不确定这将如何在弹性搜索中发挥作用，但使用lucene-core您可以使用它如下

public class TestLuceneDate {

    private static final String DETAILS = "details";
    private static Path path = Paths.get("/luceneindex");
    private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    private static final String DATE = "date";

    public static void main(String[] args) throws Exception {
        index();
        search("1988-04-08 03:00:00", "1988-04-08 16:00:00");
    }

    private static void index() throws Exception {
        Analyzer analyzer = new StandardAnalyzer();
        IndexWriterConfig config = new IndexWriterConfig(analyzer);
        Directory directory = FSDirectory.open(path);
        IndexWriter writer = new IndexWriter(directory, config);
        writer.addDocument(newDocument("document with date 1", "1988-04-08 00:05:12"));
        writer.addDocument(newDocument("document with date 2", "1988-04-08 04:20:00"));
        writer.addDocument(newDocument("document with date 3", "1988-04-08 11:13:50"));
        writer.addDocument(newDocument("document with date 4", "1988-04-08 15:07:05"));
        writer.addDocument(newDocument("document with date 5", "1988-04-08 18:14:33"));
        writer.addDocument(newDocument("document with date 6", "1988-04-08 19:20:47"));
        writer.addDocument(newDocument("document with date 7", "1988-04-08 22:16:07"));
        writer.addDocument(newDocument("document with date 8", "1988-04-08 23:44:98"));
        writer.close();
    }

    private static Document newDocument(String details, String date) throws Exception {
        Document document = new Document();
        document.add(new TextField(DETAILS, details, Store.YES));
        document.add(new LongField(DATE, DATE_FORMAT.parse(date).getTime(), Store.YES));
        return document;
    }

    private static void search(String fromDateString, String toDateString) throws Exception {
        Directory directory = FSDirectory.open(path);
        IndexReader inxRead = DirectoryReader.open(directory);
        IndexSearcher is = new IndexSearcher(inxRead);
        Long fromDate = DATE_FORMAT.parse(fromDateString).getTime();
        Long toDate = DATE_FORMAT.parse(toDateString).getTime();
        NumericRangeQuery<Long> dateRangeQuery = NumericRangeQuery.newLongRange(DATE, fromDate, toDate, true, true);
        TopDocs hits = is.search(dateRangeQuery, Integer.MAX_VALUE);
        for (ScoreDoc scoreDoc : hits.scoreDocs) {
            Document doc = is.doc(scoreDoc.doc);
            System.out.println("Parser > " + scoreDoc.score + " :: " + doc.get(DETAILS) + " - " + DATE_FORMAT.format(new Date(Long.parseLong(doc.get(DATE)))));
        }
        inxRead.close();
    }
}

我使用Lucene 5.1.0来做到这一点。

按日期字段elasticsearch中的时间范围获取对象

1 个答案: