/*
* Hibernate Search, full-text search for your domain model
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.search.elasticsearch.bridge.builtin.time.impl;
import java.time.DateTimeException;
import java.time.Instant;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatterBuilder;
import java.time.format.ResolverStyle;
import java.util.Locale;
import org.hibernate.search.elasticsearch.logging.impl.Log;
import org.hibernate.search.util.logging.impl.LoggerFactory;
/**
* Converts a {@link Instant} to a {@link String} in ISO-8601 extended format (9 digits for the year instead of 4).
*
* <p>The formatting is done using the UTC timezone.
*
* <p>Be aware that this format is <strong>not</strong> the same as {@link DateTimeFormatter#ISO_INSTANT}
* (mainly because of the second fraction field, which is at least 3 characters long), nor as Elasticsearch's
* "strict_date_optional_time" format (since years with more than 4 digits are allowed).
*
* @author Yoann Rodiere
*/
public class ElasticsearchInstantBridge extends ElasticsearchTemporalAccessorStringBridge<Instant> {
private static final Log LOG = LoggerFactory.make( Log.class );
private static final DateTimeFormatter FORMATTER = new DateTimeFormatterBuilder()
.append( ElasticsearchLocalDateBridge.FORMATTER )
.appendLiteral( 'T' )
.optionalStart()
.append( ElasticsearchLocalTimeBridge.FORMATTER )
.optionalStart()
.appendOffsetId()
.toFormatter( Locale.ROOT )
.withResolverStyle( ResolverStyle.STRICT );
private static final DateTimeFormatter INDEX_NULL_AS_FORMATTER = new DateTimeFormatterBuilder()
.append( ElasticsearchLocalDateBridge.FORMATTER )
.appendLiteral( 'T' )
.optionalStart()
.append( ElasticsearchLocalTimeBridge.FORMATTER )
.optionalStart()
.appendOffsetId()
.optionalStart()
.appendLiteral( '[' )
.appendZoneId()
.appendLiteral( ']' )
.toFormatter( Locale.ROOT )
.withResolverStyle( ResolverStyle.STRICT );
public static final ElasticsearchInstantBridge INSTANCE = new ElasticsearchInstantBridge();
private ElasticsearchInstantBridge() {
super( FORMATTER, Instant.class, INDEX_NULL_AS_FORMATTER );
}
@Override
String format(DateTimeFormatter formatter, Instant object) {
return formatter.format( object == null ? null : object.atOffset( ZoneOffset.UTC ) );
}
@Override
Instant parse(DateTimeFormatter formatter, String stringValue) throws DateTimeException {
return Instant.from( formatter.parse( stringValue ) );
}
@Override
protected IllegalArgumentException createInvalidIndexNullAsException(String indexNullAs, DateTimeException e) {
return LOG.invalidNullMarkerForInstant( e );
}
}