Module org.postgresql.pljava

Package org.postgresql.pljava.adt

Class Datetime.Date.AsLocalDate

java.lang.Object

org.postgresql.pljava.adt.Datetime.Date.AsLocalDate

All Implemented Interfaces:

Adapter.Contract<LocalDate>, Adapter.Contract.Scalar<LocalDate>, Datetime.Date<LocalDate>

Enclosing interface:

Datetime.Date<T>

public static class Datetime.Date.AsLocalDate
extends Object
implements Datetime.Date<LocalDate>

A reference implementation that maps to LocalDate.

The PostgreSQL "-infinity" and "+infinity" values are mapped to LocalDate instances matching (by equals) the special instances NOBEGIN and NOEND here, respectively.

Nested Class Summary

Nested classes/interfaces inherited from interface org.postgresql.pljava.Adapter.Contract

Adapter.Contract.Array<T,E,A extends Adapter<E,?>>, Adapter.Contract.Scalar<T>

Nested classes/interfaces inherited from interface org.postgresql.pljava.adt.Datetime.Date

Datetime.Date.AsLocalDate

Field Summary

Fields

Modifier and Type	Field	Description
static final Datetime.Date.AsLocalDate	INSTANCE
static final LocalDate	NOBEGIN	LocalDate representing PostgreSQL's "infinitely early" date.
static final LocalDate	NOEND	LocalDate representing PostgreSQL's "infinitely late" date.

Fields inherited from interface org.postgresql.pljava.adt.Datetime.Date

POSTGRES_EPOCH

Method Summary

Modifier and Type	Method	Description
LocalDate	construct(int daysSincePostgresEpoch)	Constructs a representation T from the components of the PostgreSQL data type.
<T> T	store(LocalDate d, Datetime.Date<T> f)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

INSTANCE

public static final Datetime.Date.AsLocalDate INSTANCE

NOBEGIN

public static final LocalDate NOBEGIN

LocalDate representing PostgreSQL's "infinitely early" date.

NOEND

public static final LocalDate NOEND

LocalDate representing PostgreSQL's "infinitely late" date.

Method Details

construct

public LocalDate construct(int daysSincePostgresEpoch)

Description copied from interface: Datetime.Date

Constructs a representation T from the components of the PostgreSQL data type.

The argument represents days since POSTGRES_EPOCH, unless it is one of the special values DATEVAL_NOBEGIN or DATEVAL_NOEND.

When constructing a representation that lacks notions of positive or negative "infinity", one option is to simply map the above special values no differently than ordinary ones, and remember the two resulting representations as the "infinite" ones. If that is done without wraparound, the resulting "-infinity" value will precede all other PostgreSQL-representable dates and the resulting "+infinity" will follow them.

The older java.util.Date cannot represent those values without wraparound; the two resulting values can still be saved as representing -infinity and +infinity, but will not have the expected ordering with respect to other values. They will both be quite far from the present.

Specified by:

construct in interface Datetime.Date<LocalDate>

store

public <T> T store(LocalDate d,
 Datetime.Date<T> f)
            throws SQLException

Throws:

SQLException