Sebastian Gift created SOLR-16260:
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Summary: Handle JSR310 Date classes in JavaBinCodec
Key: SOLR-16260
URL: https://issues.apache.org/jira/browse/SOLR-16260
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Components: clients - java
Affects Versions: 8.11.1, 9.0
Reporter: Sebastian Gift
JavaBinCodec currently only supports java.util.Date as Date input and doesn't
handle JSR310 classes like Instant or LocalDate. As a result adding a
SolrInputDocument which contains a LocalDate will be serialized in SolrJ as
java.time.LocalDate:2022-12-31 using the fallback logic in
JavaBinCodec#writeVal. This value then gets parsed on the server and throws an
exception if the field is defined as a date field in the schema.
I've written a small PR on Github to support ZonedDateTime, LocalDate and
Instant as variants of Date (all get stored in Javabin as epoch millis and
converted to Date on deserializing). I've not added support for LocalDateTime
since it lacks enough information to be converted to epoch millis, but maybe
there should be some warning or error provided to show that it isn't supported
by SolrJ (instead of the generic "Couldn't parse date because: Improperly
formatted datetime:" Exception)
Note: A user could provide the value either as String (e.g. using
Instant#toString) or ObjectResolver, which gets parsed correctly, but compared
to the handling of java.util.Date that's not very intuitive.
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