Module org.postgresql.pljava

Package org.postgresql.pljava.model

Interface TupleDescriptor.Interned

All Superinterfaces:

Collection<Attribute>, Iterable<Attribute>, List<Attribute>, SequencedCollection<Attribute>, TargetList, TargetList.Projection, TupleDescriptor

Enclosing interface:

TupleDescriptor

public static interface TupleDescriptor.Interned
extends TupleDescriptor

A descriptor that either describes a known composite type in the catalogs, or has been interned in PostgreSQL's type cache, and has a distinct rowType that can be used to identify it for the duration of the session.

Some operations, such as constructing a composite value for a function to return, require this.

Nested Class Summary

Nested classes/interfaces inherited from interface org.postgresql.pljava.TargetList

TargetList.Cursor, TargetList.Projection

Nested classes/interfaces inherited from interface org.postgresql.pljava.model.TupleDescriptor

TupleDescriptor.Ephemeral, TupleDescriptor.Interned

Method Summary

Modifier and Type	Method	Description
default TupleDescriptor.Interned	intern()	Return this descriptor unchanged if it is already interned in PostgreSQL's type cache, otherwise an equivalent new descriptor with a different rowType uniquely assigned to identify it for the duration of the session.

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.List

add, add, addAll, addAll, addFirst, addLast, clear, contains, containsAll, equals, get, getFirst, getLast, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, removeFirst, removeLast, replaceAll, retainAll, reversed, set, size, sort, spliterator, toArray, toArray

Methods inherited from interface org.postgresql.pljava.TargetList

applyOver, applyOver, sqlGet

Methods inherited from interface org.postgresql.pljava.TargetList.Projection

project, project, project, project, sqlProject, subList

Methods inherited from interface org.postgresql.pljava.model.TupleDescriptor

attributes, get, get, rowType

Method Details

intern

default TupleDescriptor.Interned intern()

Description copied from interface: TupleDescriptor

Return this descriptor unchanged if it is already interned in PostgreSQL's type cache, otherwise an equivalent new descriptor with a different rowType uniquely assigned to identify it for the duration of the session.

PostgreSQL calls this operation "BlessTupleDesc", which updates the descriptor in place; in PL/Java code, the descriptor returned by this method should be used in place of the original.

Specified by:

intern in interface TupleDescriptor