Empty result set from a Compass Lucene query with Dates

Question

I am using Compass to make queries on data inside in memory data structure. It works fine for searching String and enum values, now I want to search dates.

Search criteria are annotated by @SearchRestriction annotation. Example about someDate:

    @SearchRestriction(path="fooBar.someDate" type = SearchRestrictionType.EQUAL)
    String someDate;

At searchable data SomeDate is annotated like the following:

    @SearchableProperty
    Date someDate;

SomeDate inside the searchable data is generated with new Date();) and query String is given as 20120802.

Situation on debugger: This code generates queries like this:

    someDate:20120802

Here someDate is the name of the field I am looking for and 20120802 is a date in order yyyyMMdd.

Problem: No results is returned, when this query is run. I get an empty list. The Date in query is the same as in the Date object.

What is wrong?? Is this wrong way to search Dates with Compass? I can find only range queries about Date, but a search with exact Date or part of exact Date I cannot find.

Answer 1

You need to specify the format for Searchable property [Date]

@SearchableProperty(format = "yyyyMMdd")

To some extent, it relates to Grails: Lucene, Compass Query Builder and date ranges