Crate postproject_core 

Application-neutral domain types and service contracts for PostProject.

This crate deliberately has no persistence, FFI, or application-framework dependencies. Backends and adapters depend on this crate, never the reverse.

Structs

Activity

A production operation connecting input and output representations.

ActivityId

Stable identity of a production activity.

ActivityInput

One representation consumed by an activity.

ActivityKind

A namespaced, open-world production activity kind.

ActivityOutput

One representation produced by an activity.

ActivityRole

A namespaced, open-world role for an activity input or output.

AgentIdentity

A person, organization, application instance, or service responsible for an activity.

Asset

Logical identity for one piece of production media.

AssetId

Stable logical identity of an asset.

AvailabilityIssue

A resource- or frame-specific availability diagnostic.

Confidence

A deterministic confidence value in basis points from 0 through 10,000.

ContentStructure

A validated description of how resources realize one representation.

DecimalValue

An exact base-ten decimal represented as coefficient * 10^-scale.

Error

An application-neutral error with a stable category and useful context.

ExternalIdentifier

An identifier assigned by an external standard, vendor, or application.

FileFacts

Cheap filesystem facts observed for one resource.

FrameRange

An inclusive, regularly stepped frame domain.

HostObjectBinding

Portable reference from a host document to one production-scoped object.

IdentifierScheme

An extensible scheme name for an external identifier.

IdentifierSchemeDefinition

Documentation and optional local validation for one identifier scheme.

ImageSequenceDescriptor

A compact description of one regular or sparse image sequence.

ImageSequencePattern

The filename components surrounding an image-sequence frame number.

Locator

A URI identifying one access route to a resource.

LocatorId

Stable identity of one access route to a resource.

MediaRoot

An ordered filesystem or URI boundary searched by the resolver.

MediaRootId

Stable identity of a configured resolver search root.

MetadataAssertion

One independently repeatable assertion about a target object.

MetadataField

One named member of an ordered structured metadata value.

MetadataMatch

A metadata assertion together with the object carrying it.

MetadataProperty

A globally meaningful property formed from a vocabulary and local name.

MetadataPropertyAlias

One externally defined spelling corresponding to a property.

MetadataPropertyDefinition

Advisory type, cardinality, and mapping information for one property.

MetadataValue

A bounded, recursively typed metadata value.

MetadataVocabularyDefinition

Documentation and property hints for one metadata vocabulary.

OriginIdentity

Identity of the integrating application or process that committed a revision.

OriginalMediaImport

A validated aggregate representing an imported asset and original media.

Production

A persistent container for production state.

ProductionId

Stable identity of a production.

PropertyId

A property name local to a metadata vocabulary.

RationalRate

A positive, normalized rational rate.

RationalTime

An exact integer value measured at a rational rate.

RationalValue

An exact normalized rational number.

Representation

One encoded or derived form of an asset.

RepresentationFingerprint

Versioned, structure-aware identity evidence for a representation.

RepresentationId

Stable identity of an encoded or derived asset representation.

RepresentationImport

A validated representation and the storage resources that realize it.

RepresentationResolution

Representation-level availability with ordered per-resource detail.

ResolutionCandidate

A possible resource locator considered by the resolver.

ResolutionEvidence

Structured evidence with optional human-readable context.

Resource

A storage-level component used to realize a representation.

ResourceFingerprint

Versioned identity evidence derived from one storage resource.

ResourceId

Stable identity of stored content used by a representation.

ResourceMember

One resource’s role and requiredness within a content structure.

ResourceResolution

An explainable result for one resource, independent of representation shape.

ResourceRole

A namespaced, open-world role for a resource within a representation.

Revision

One committed production mutation transaction in local sequence order.

RevisionContext

Optional origin and message applied to one transaction’s revision.

RevisionEvent

One deterministically ordered semantic event within a revision.

RevisionId

Stable identity of one durable production revision.

TimeRange

A half-open time range with a non-negative duration.

Timestamp

A UTC instant represented as microseconds since the Unix epoch.

ToolIdentity

The software or service that performed a production activity.

TransactionId

Stable identity of a domain transaction.

TransactionLifecycle

A small state machine shared by storage-backed domain transactions.

VocabularyId

An extensible identifier for a metadata vocabulary or namespace.

Enums

AvailabilityIssueKind

The machine-inspectable category of a representation availability issue.

ContentStructureKind

The structural shape used to realize a representation.

ErrorKind

Stable categories shared by core services and external adapters.

EvidenceKind

A machine-inspectable reason supporting or opposing a resolution candidate.

IdentifierValidationKind

The strength of local validation supplied for a known scheme.

LocatorAvailability

The last observed availability of a resource locator.

MetadataCardinality

Whether a property accepts at most one assertion or repeated assertions.

MetadataValueKind

The inspectable type of a MetadataValue.

ObjectRef

A typed reference to an object that may carry extensible assertions.

RepresentationAvailability

Aggregated availability of a complete representation.

RepresentationKind

The semantic role of an asset representation.

ResourceResolutionState

The outcome of resolving one storage resource.

RevisionEventKind

One semantic mutation recorded in a durable revision.

TransactionState

The state of an explicit domain transaction.

Constants

DUBLIN_CORE_ELEMENTS_VOCABULARY

Dublin Core elements namespace used by XMP and other mappings.

EBUCORE_VOCABULARY

Current EBUCore namespace identity.

EIDR_SCHEME

Entertainment Identifier Registry URNs from RFC 7972.

IDENTIFIER_SCHEMES

Small built-in registry. Unknown schemes remain valid opaque identifiers.

IPTC_VMH_JSON_VOCABULARY

IPTC Video Metadata Hub 1.7 JSON schema identity.

ISAN_SCHEME

International Standard Audiovisual Number URNs from RFC 4246.

MAX_ACTIVITY_EDGES

Maximum number of input or output edges on one activity.

MAX_ACTIVITY_KIND_BYTES

Maximum encoded length of an activity-kind identifier.

MAX_ACTIVITY_ROLE_BYTES

Maximum encoded length of an activity-edge role identifier.

MAX_CONTENT_MEMBERS

Maximum number of materialized resource members in one content structure.

MAX_FRAME_PADDING

Maximum supported zero-padding width for an image-sequence frame number.

MAX_IDENTIFIER_QUALIFIER_BYTES

Maximum UTF-8 byte length of an optional identifier qualifier.

MAX_IDENTIFIER_SCHEME_BYTES

Maximum UTF-8 byte length of an external identifier scheme.

MAX_IDENTIFIER_VALUE_BYTES

Maximum UTF-8 byte length of an external identifier value.

MAX_LANGUAGE_TAG_BYTES

Maximum byte length of a language tag.

MAX_METADATA_BINARY_BYTES

Maximum byte length of one binary value.

MAX_METADATA_COLLECTION_ITEMS

Maximum number of direct children in a list or structured value.

MAX_METADATA_DECIMAL_SCALE

Maximum number of fractional decimal digits.

MAX_METADATA_NESTING_DEPTH

Maximum nesting depth of lists and structured values, including the root.

MAX_METADATA_TEXT_BYTES

Maximum UTF-8 byte length of one text value.

MAX_METADATA_TOTAL_BYTES

Maximum aggregate payload size of one metadata value.

MAX_METADATA_URI_BYTES

Maximum UTF-8 byte length of one URI value.

MAX_PROPERTY_ID_BYTES

Maximum UTF-8 byte length of a vocabulary-local property identifier.

MAX_PROVENANCE_NAME_BYTES

Maximum UTF-8 byte length of a tool or agent display name.

MAX_PROVENANCE_URI_BYTES

Maximum UTF-8 byte length of an optional tool or vendor URI.

MAX_RESOURCE_ROLE_BYTES

Maximum encoded length of an extensible resource-role identifier.

MAX_REVISION_MESSAGE_BYTES

Maximum UTF-8 byte length of a revision message.

MAX_REVISION_PAGE_SIZE

Maximum revisions returned by one change-feed page.

MAX_SEQUENCE_EXCEPTIONS

Maximum number of sparse frame exceptions stored in one sequence descriptor.

MAX_SEQUENCE_PATTERN_BYTES

Maximum combined UTF-8 length of an image-sequence prefix and suffix.

MAX_TOOL_VERSION_BYTES

Maximum UTF-8 byte length of an optional tool version.

MAX_VOCABULARY_ID_BYTES

Maximum UTF-8 byte length of a vocabulary identifier.

METADATA_VOCABULARIES

Small built-in registry. Unknown vocabularies and properties remain valid.

POSTPROJECT_APPLICATION_SCHEME

Application-defined identifiers whose value semantics belong to the host.

POSTPROJECT_METADATA_VOCABULARY

Namespace reserved for the small set of PostProject-owned metadata terms.

SMPTE_UMID_SCHEME

SMPTE UMID values represented according to SMPTE ST 2029.

XMP_BASIC_VOCABULARY

Adobe XMP Basic namespace.

Traits

ProductionRead

Read operations required from a production persistence backend.

ProductionStore

A production persistence backend with explicit domain transactions.

ProductionStoreTransaction

Transactional mutation operations required from a persistence backend.

Functions

identifier_scheme_definition

Finds a built-in definition by exact scheme spelling.

metadata_property_definition

Finds a built-in property hint by exact vocabulary and property spelling.

metadata_vocabulary_definition

Finds a built-in vocabulary definition by exact identifier spelling.

validate_known_identifier

Applies optional built-in validation and reports whether the scheme is known.

Type Aliases

Result

The result type returned by core domain operations.