/*
* Copyright 2004-2023 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.engine;
import org.h2.api.JavaObjectSerializer;
import org.h2.util.TimeZoneProvider;
import org.h2.value.ValueTimestampTimeZone;
/**
* Provides information for type casts and comparison operations.
*/
public interface CastDataProvider {
/**
* Returns the current timestamp with maximum resolution. The value must be
* the same within a transaction or within execution of a command.
*
* @return the current timestamp for CURRENT_TIMESTAMP(9)
*/
ValueTimestampTimeZone currentTimestamp();
/**
* Returns the current time zone.
*
* @return the current time zone
*/
TimeZoneProvider currentTimeZone();
/**
* Returns the database mode.
*
* @return the database mode
*/
Mode getMode();
/**
* Returns the custom Java object serializer, or {@code null}.
*
* @return the custom Java object serializer, or {@code null}
*/
JavaObjectSerializer getJavaObjectSerializer();
/**
* Returns are ENUM values 0-based.
*
* @return are ENUM values 0-based
*/
boolean zeroBasedEnums();
}