Solr Index Date Format Issues

Posted on May 17, 2011

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Solr Index uses UTC time format … Zulu time zone (GMT).

A date field shall be of the form 1995-12-31T23:59:59Z The trailing “Z” designates UTC time and is mandatory

Say your class has a property expiryDate … create another property indexedExpiryDate and index the later field.

So if you want to send data to the index you have to format it …

public Date getIndexedExpiryDate(){

    SimpleDateFormat sdf = new SimpleDateFormat(“yyyy-MM-dd’T’HH:mm:ss.SSS’Z'”);
    Date indexFormatExpiryDate = sdf.parse(sdf.format(getExpiryDate()));
    System.out.println(“indexFormatExpiry: “+indexFormatExpiry);
    setIndexedExpiryDate(indexFormatExpiryDate );
    return indexFormatExpiryDate

}

When you read it back from the index into the bean … it will automatically setIndexedExpiryDate with the date/time local time zone.

How ever, the index itself will hold the date in ZULU time (GMT) … so if you query the index directly you need to adjust for time zone … as queries will not be adjusted for local time zone.

If you are in IST that is 5hrs 30mins ahead of GMT … the query needs to be …

indexedExpiryDate :[NOW/DAY-5DAY-30MINUTES to *]  … to get all entities with indexedExpiryDate  >= today

Useful links …

Solr Date Field

Solr Date Query Syntax

Time Zone Converter

UTC – Coordinated Universal Time

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Posted in: Solr