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Date/Time Type Handlers

Date/time type handlers are located in the net.hasor.dbvisitor.types.handler.time package.

Common Handlers

Handler	Java Type	Purpose
LocalDateTimeTypeHandler	java.time.LocalDateTime	Reads/writes LocalDateTime data via getObject/setObject
LocalTimeTypeHandler	java.time.LocalTime	Reads/writes LocalTime data via getObject/setObject
OffsetDateTimeTypeHandler	java.time.OffsetDateTime	Reads/writes OffsetDateTime data via getObject/setObject
OffsetTimeTypeHandler	java.time.OffsetTime	Reads/writes OffsetTime data via getObject/setObject
SqlDateTypeHandler	java.sql.Date	Reads/writes Date data via getObject/setObject
SqlTimestampTypeHandler	java.sql.Timestamp	Reads/writes Timestamp data via getObject/setObject
SqlTimeTypeHandler	java.sql.Time	Reads/writes Time data via getObject/setObject

Using java.util.Date

Handler	Java Type	Purpose
SqlDateAsDateHandler	java.util.Date	Reads/writes java.util.Date data via getDate/setDate
SqlTimeAsDateTypeHandler	java.util.Date	Reads/writes java.util.Date data via getTime/setTime (date portion is discarded)
SqlTimestampAsDateTypeHandler	java.util.Date	Reads/writes java.util.Date data via getTimestamp/setTimestamp

Using java.time.Year

Handler	Java Type	Purpose
IntegerAsYearTypeHandler	java.time.Year	Reads/writes a numeric value representing the year
StringAsYearTypeHandler	java.time.Year	Reads/writes a string-form numeric value representing the year
SqlTimestampAsYearTypeHandler	java.time.Year	Reads/writes Year data via getTimestamp/setTimestamp (month/day/time are discarded)

Using java.time.YearMonth

Handler	Java Type	Purpose
IntegerAsYearMonthTypeHandler	java.time.YearMonth	Reads/writes a number where the last 2 digits represent the month, the rest represents the year. Values under 2 digits are treated as month. 0 means 0000-01
StringAsYearMonthTypeHandler	java.time.YearMonth	String format yyyy-MM
SqlTimestampAsYearMonthTypeHandler	java.time.YearMonth	Reads/writes YearMonth data via getTimestamp/setTimestamp (day/time are discarded)

Using java.time.Month

Handler	Java Type	Purpose
IntegerAsMonthTypeHandler	java.time.Month	Reads/writes a number between 1 and 12 representing the month
StringAsMonthTypeHandler	java.time.Month	String-form number representing the month, value range 1-12
SqlTimestampAsMonthTypeHandler	java.time.Month	Reads/writes Month data via getTimestamp/setTimestamp (year/day/time are discarded)

Using java.time.MonthDay

Handler	Java Type	Purpose
IntegerAsMonthDayTypeHandler	java.time.MonthDay	Reads/writes a 4-digit number where the first 2 digits represent the month and the last 2 represent the day
StringAsMonthDayTypeHandler	java.time.MonthDay	String format MM-dd (e.g. 01-03)
SqlTimestampAsMonthDayTypeHandler	java.time.MonthDay	Reads/writes MonthDay data via getTimestamp/setTimestamp (year/time are discarded)

Type Conversions

Handler	Java Type	Purpose
SqlTimestampAsLocalDateTimeTypeHandler	java.time.LocalDateTime	Reads/writes LocalDateTime via getTimestamp/setTimestamp
SqlTimestampAsLocalDateTypeHandler	java.time.LocalDate	Reads/writes LocalDate via getTimestamp/setTimestamp, missing time is filled with 00:00
SqlTimestampAsLocalTimeTypeHandler	java.time.LocalTime	Reads/writes LocalTime via getTimestamp/setTimestamp, missing date is filled with 0000-01-01
LocalDateTimeAsLocalTimeTypeHandler	java.time.LocalTime	Reads/writes LocalDateTime via getObject/setObject, auto-converts to LocalTime, missing date is filled with 0000-01-01
LocalDateTimeAsLocalDateTypeHandler	java.time.LocalDate	Reads/writes LocalDateTime via getObject/setObject, auto-converts to LocalDate, missing time is filled with 00:00
JapaneseDateAsSqlDateTypeHandler	java.time.chrono.JapaneseDate	Reads/writes JapaneseDate data via getDate/setDate
OffsetDateTimeAsZonedDateTimeTypeHandler	java.time.ZonedDateTime	Reads/writes OffsetDateTime via getObject/setObject, auto-converts to ZonedDateTime
SqlTimestampAsInstantTypeHandler	java.time.Instant	Reads/writes Instant data via getTimestamp/setTimestamp

Automatic Timezone Conversion

Automatic timezone conversion — timezone reads and writes are converted to UTC.

Handler	Java Type	Purpose
SqlTimestampAsUTCOffsetDateTimeTypeHandler	java.time.OffsetDateTime	Automatic timezone conversion, reads/writes Timestamp data using OffsetDateTime
SqlTimestampAsUTCOffsetTimeTypeHandler	java.time.OffsetTime	Automatic timezone conversion, reads/writes Timestamp data using OffsetTime

Special Support

Handler	Java Type	Purpose
JulianDayTypeHandler	java.time.LocalDate	Stores dates using Julian Day Number, supports BCE dates. Stored as BIGINT in the database
PgDateTypeHandler	java.time.LocalDate	PostgreSQL DATE type specific, supports BCE dates (BC suffix format). Annotated with @NoCache

JulianDayTypeHandler

Julian Day Number is a date representation method commonly used in astronomy, counting continuously from January 1, 4713 BCE. Stored as BIGINT in the database, it avoids conversion issues between different calendar systems.

Applicable scenarios: when you need to handle BCE dates, or ensure date consistency across database systems.

PgDateTypeHandler

PostgreSQL supports using a BC suffix to represent BCE dates (e.g. 0100-01-01 BC represents 100 BCE). Java LocalDate uses ISO 8601 year representation:

Java Year	Meaning
Year 1	1 CE (1 AD)
Year 0	1 BCE (1 BC)
Year -1	2 BCE (2 BC)
Year -99	100 BCE (100 BC)