Class ModelEventMetadata

java.lang.Object

io.fluxzero.common.api.modeling.ModelEventMetadata

public final class ModelEventMetadata
extends Object

Reserved metadata keys identifying events emitted by an independent-model commit.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ALIAS_BINDINGS	Canonical property-qualified Model references observed by this substep, encoded as a JSON string map.
static final String	CASCADE_SUBSTEPS	Comma-separated internal cascade substeps caused by this event.
static final String	COMMIT_ID	Durable idempotency identity of the model commit that emitted an event.
static final String	SUBSTEP	Ordered substep within the model commit.

Method Summary

Modifier and Type	Method	Description
static List<Integer>	cascadeSubsteps(Metadata metadata)	Returns the bounded, ordered cascade references, rejecting malformed or backward references.
static ModelReadBoundary	readBoundary(Metadata metadata)	Returns the commit boundary carried by metadata, or null when it is not a Model event.
static ModelReadBoundary	readBoundary(Metadata metadata, MessageType messageType, Long messageIndex)	Returns the Model boundary carried by a Model event, or falls back to an existing global event index.

Methods inherited from class Object

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

Field Details

COMMIT_ID

public static final String COMMIT_ID

Durable idempotency identity of the model commit that emitted an event.

See Also:

• Constant Field Values

SUBSTEP

public static final String SUBSTEP

Ordered substep within the model commit.

See Also:

• Constant Field Values

ALIAS_BINDINGS

public static final String ALIAS_BINDINGS

Canonical property-qualified Model references observed by this substep, encoded as a JSON string map.

See Also:

• Constant Field Values

CASCADE_SUBSTEPS

public static final String CASCADE_SUBSTEPS

Comma-separated internal cascade substeps caused by this event. Complete Graph-change handlers observe their targets at those substeps' own boundaries; ordinary payload handlers retain SUBSTEP.

See Also:

• Constant Field Values

Method Details

cascadeSubsteps

public static List<Integer> cascadeSubsteps(Metadata metadata)

Returns the bounded, ordered cascade references, rejecting malformed or backward references.

readBoundary

public static ModelReadBoundary readBoundary(Metadata metadata)

Returns the commit boundary carried by metadata, or null when it is not a Model event.

readBoundary

public static ModelReadBoundary readBoundary(Metadata metadata,
 MessageType messageType,
 Long messageIndex)

Returns the Model boundary carried by a Model event, or falls back to an existing global event index.

The fallback lets events that predate Model metadata address state reconstructed from that same published event. Without migration coordination, an event without a Model mapping retains ordinary current-state behavior. A repository configured with followPublishedEventMigration may instead wait for the mapping or reject a processed event that produced none. An event index is never interpreted as a Model state index.