Range Query with Lucene 2.9.x - Dates in Index are not working

Question

I use the following statement to index a date:

luceneDoc.add(new NumericField(key).setLongValue(date.getTime()));

I also use statements as follows to add text properties:

luceneDoc.add(new Field(key, value, Field.Store.YES, Field.Index.ANALYZED));

Then I perform a text property query:

author:hans

This works perfect. But when I perform a range query, nothing gets returned:

my-date-property:[20100101 TO 20110101]

What am I missing here?

I had a look at the index with Luke, I see all my text property for a document but the date properties only appear in the overview page... maybe that is normal. I actually DO SEE the date properties if I add it like this:

NumericField field = new NumericField(key, Field.Store.YES, true);
field.setLongValue(date.getTime());
luceneDoc.add(field);

But: the query still does not work! Maybe it only works from Java with the Query Builder? I have not tried out that. But it would be great if the text query would work too. ANY IDEA???

Answer 1

If you want a range query to work with dates in the form of YYYYMMDD, then index your date like this:

String dateString = DateTools.dateToString(date, Resolution.DAY);
luceneDoc.add(new Field(key, dateString, Store.YES, Index.NOT_ANALYZED));