org.jooq.types

Interface Interval

All Superinterfaces:

Serializable

All Known Implementing Classes:

DayToSecond, YearToMonth

public interface Interval
extends Serializable

A substitute for JDBC's missing java.sql.Interval data type.

JDBC lacks an important data type that is present in most SQL databases: INTERVAL. The SQL:2008 standard states that there are two types of intervals:

4.6.3 Intervals

There are two classes of intervals. One class, called year-month intervals, has an express or implied datetime precision that includes no fields other than YEAR and MONTH, though not both are required. The other class, called day-time intervals, has an express or implied interval precision that can include any fields other than YEAR or MONTH.

INTERVAL can be combined with date time data types according to the following operation table:

Operand 1	Operator	Operand 2	Result Type
Datetime	–	Datetime	Interval
Datetime	+ or –	Interval	Datetime
Interval	+	Datetime	Datetime
Interval	+ or –	Interval	Interval
Interval	* or /	Numeric	Interval
Numeric	*	Interval	Interval

Interval implementations can be expected to also also extend Number.

Note: only a few databases actually support this data type on its own. You can still use it for date time arithmetic in other databases, though, through Field.add(Field) and Field.sub(Field) Databases that have been observed to natively support INTERVAL data types are:

• SQLDialect.HSQLDB
• SQLDialect.INGRES
• SQLDialect.ORACLE
• SQLDialect.POSTGRES

These dialects have been observed to partially support INTERVAL data types in date time arithmetic functions, such as TIMESTAMPADD, and TIMESTAMPDIFF:

• SQLDialect.CUBRID
• SQLDialect.MYSQL

Author:

Lukas Eder

Method Summary

Methods

Modifier and Type	Method and Description
Interval	abs() Get the absolute value of the interval (set its sign to positive)
byte	byteValue()
double	doubleValue()
float	floatValue()
int	getSign() The sign of the interval
int	intValue()
long	longValue()
Interval	neg() Negate the interval (change its sign)
short	shortValue()

Method Detail

neg

Interval neg()

Negate the interval (change its sign)

abs

Interval abs()

Get the absolute value of the interval (set its sign to positive)

getSign

int getSign()

The sign of the interval

Returns:

1 for positive or zero, -1 for negative

doubleValue

double doubleValue()

See Also:

Number.doubleValue()

floatValue

float floatValue()

See Also:

Number.floatValue()

longValue

long longValue()

See Also:

Number.longValue()

intValue

int intValue()

See Also:

Number.intValue()

byteValue

byte byteValue()

See Also:

Number.byteValue()

shortValue

short shortValue()

See Also:

Number.shortValue()