Module org.postgresql.pljava.internal

Package org.postgresql.pljava.internal

Class Invocation

java.lang.Object

java.lang.ref.Reference<String>

java.lang.ref.WeakReference<String>

org.postgresql.pljava.internal.DualState<String>

org.postgresql.pljava.internal.DualState.ListHead

org.postgresql.pljava.internal.LifespanImpl

org.postgresql.pljava.internal.Invocation

All Implemented Interfaces:

Lifespan

public class Invocation
extends LifespanImpl

One invocation, from PostgreSQL, of functionality implemented using PL/Java.

This class is the Java counterpart of the struct Invocation_ in the C code, but while there is a new stack-allocated C structure on every entry from PG to PL/Java, no instance of this class is created unless requested (with current(); once requested, a reference to it is saved in the C struct for the duration of the invocation.

Author:

Thomas Hallgren

Nested Class Summary

Nested classes/interfaces inherited from class org.postgresql.pljava.internal.LifespanImpl

LifespanImpl.Addressed

Nested classes/interfaces inherited from class org.postgresql.pljava.internal.DualState

DualState.BBHeapFreeTuple<T>, DualState.ListHead, DualState.Pinned, DualState.SingleDeleteGlobalRefP<T>, DualState.SingleFreeErrorData<T>, DualState.SingleFreeTupleDesc<T>, DualState.SingleGuardedBB<T>, DualState.SingleGuardedLong<T>, DualState.SingleHeapFreeTuple<T>, DualState.SingleMemContextDelete<T>, DualState.SinglePfree<T>, DualState.SingleSPIcursorClose<T>, DualState.SingleSPIfreeplan<T>, DualState.SingleSPIfreetuptable<T>

Method Summary

Modifier and Type	Method	Description
static void	clearErrorCondition()
static Invocation	current()
int	getNestingLevel()
final PgSavepoint	getSavepoint()
final void	setSavepoint(PgSavepoint savepoint)
static MemoryContext	upperExecutorContext()	The "upper executor" memory context (that is, the context on entry, prior to any SPI_connect) associated with the current (innermost) invocation.

Methods inherited from class org.postgresql.pljava.internal.LifespanImpl

toString, toString

Methods inherited from class org.postgresql.pljava.internal.DualState.ListHead

lifespanRelease

Methods inherited from class org.postgresql.pljava.internal.DualState

adoptionLock, adoptionUnlock, clear, enqueue, get, identifierForMessage, invalidMessage, invalidSqlState, javaStateReleased, javaStateUnreachable, lock, m, nativeStateReleased, pin, pinned, pinnedByCurrentThread, pinnedNoChecked, pinUnlessReleased, referent, releasedMessage, releasedSqlState, releaseFromJava, unlessReleased, unlock, unlock, unpin

Methods inherited from class java.lang.ref.Reference

clone, isEnqueued, reachabilityFence, refersTo

Methods inherited from class java.lang.Object

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

Method Details

getNestingLevel

public int getNestingLevel()

Returns:

The nesting level of this invocation

getSavepoint

public final PgSavepoint getSavepoint()

Returns:

Returns the savePoint.

setSavepoint

public final void setSavepoint(PgSavepoint savepoint)

Parameters:

savepoint - The savepoint to set.

current

public static Invocation current()

Returns:

The current invocation

upperExecutorContext

public static MemoryContext upperExecutorContext()

The "upper executor" memory context (that is, the context on entry, prior to any SPI_connect) associated with the current (innermost) invocation.

clearErrorCondition

public static void clearErrorCondition()