Input: IRI (any valid IRI format)
Output: DataHub URN (urn:li:{entityType}:{path})

def extract_constraints(graph, property_shape_uri):
    """Extract all constraints from a PropertyShape."""
    constraints = {}

    # Extract SHACL constraints
    constraints.update(extract_shacl_constraints(graph, property_shape_uri))

    # Extract SKOS enum constraints
    class_uri = get_class_uri(graph, property_shape_uri)
    if class_uri:
        enum_values = extract_enum_from_skos_collection(graph, class_uri)
        if enum_values:
            constraints['enum'] = enum_values

    return constraints

def extract_enum_values(graph, term_uri):
    """Extract enum values from SKOS Collections or OWL Enumerations."""
    enum_values = []

    # Try SKOS Collections first
    skos_values = extract_enum_from_skos_collection(graph, term_uri)
    if skos_values:
        return skos_values

    # Try OWL Enumerations
    owl_values = extract_enum_from_owl_enumeration(graph, term_uri)
    if owl_values:
        return owl_values

    return enum_values

def generate_assertions_from_constraints(constraints, field_context):
    """Generate DataHub assertions from extracted constraints."""
    assertions = []

    # Required field assertion
    if field_context.min_count > 0:
        assertions.append(create_not_null_assertion(field_context))

    # Length constraints
    if 'max_length' in constraints:
        assertions.append(create_length_assertion(constraints['max_length']))

    # Range constraints
    if 'min_inclusive' in constraints:
        assertions.append(create_range_assertion(constraints['min_inclusive'], 'min'))
    if 'max_inclusive' in constraints:
        assertions.append(create_range_assertion(constraints['max_inclusive'], 'max'))

    # Pattern constraints
    if 'pattern' in constraints:
        assertions.append(create_pattern_assertion(constraints['pattern']))

    # Enum constraints
    if 'enum' in constraints:
        assertions.append(create_enum_assertion(constraints['enum']))

    return assertions

class EntityRegistry:
    """Central registry for entity processors and metadata."""

    def register_processor(self, entity_type: str, processor: EntityProcessor):
        """Register an entity processor."""

    def register_metadata(self, entity_type: str, metadata: EntityMetadata):
        """Register entity metadata."""

    def get_extractor(self, entity_type: str) -> EntityExtractor:
        """Get extractor for entity type."""

    def get_converter(self, entity_type: str) -> Optional[EntityConverter]:
        """Get converter for entity type (optional - may be None)."""

    def get_mcp_builder(self, entity_type: str) -> EntityMCPBuilder:
        """Get MCP builder for entity type."""

    def list_entity_types(self) -> List[str]:
        """List all registered entity types."""

class EntityRegistry:
    """Simplified registry with explicit entity type registration."""

    def __init__(self):
        # Explicitly register supported entity types
        self._register_glossary_term()
        self._register_relationship()
        self._register_domain()

class RDFGraph:
    """Internal AST representation of the complete RDF graph."""
    def __init__(self):
        # Initialize entity fields dynamically from registry
        from ..entities.registry import create_default_registry
        registry = create_default_registry()

        # Initialize entity fields dynamically
        for entity_type, metadata in registry._metadata.items():
            field_name = _entity_type_to_field_name(entity_type)
            setattr(self, field_name, [])

        # Special fields (always present)
        self.metadata: Dict[str, Any] = {}

from ...core.urn_generator import UrnGeneratorBase

class GlossaryTermUrnGenerator(UrnGeneratorBase):
    """Entity-specific URN generation for glossary terms."""

    def generate_glossary_term_urn(self, iri: str) -> str:
        # Implementation
        pass

def _create_export_target_enum() -> type[Enum]:
    """Dynamically create ExportTarget enum from registered entities."""
    registry = create_default_registry()

    enum_values = {
        'ALL': 'all',
        'ENTITIES': 'entities',
        'LINKS': 'links',
        'DDL': 'ddl',
    }

    # Add entity-specific targets from registered entities
    for entity_type in registry.list_entity_types():
        metadata = registry.get_metadata(entity_type)
        if metadata and metadata.cli_names:
            for cli_name in metadata.cli_names:
                enum_member_name = cli_name.upper().replace('-', '_')
                enum_values[enum_member_name] = cli_name

    return Enum('ExportTarget', enum_values)

ex:creditScoreProperty a sh:PropertyShape ;
    sh:path ex:creditScore ;
    sh:datatype xsd:integer ;
    sh:minInclusive 300 ;
    sh:maxInclusive 850 ;
    sh:name "Credit Score" ;
    sh:description "FICO credit score" ;
    ex:sqlType "INTEGER" .

# Parent concept
ex:Status a skos:Concept ;
    skos:prefLabel "Status" .

# Enum values
ex:Active a skos:Concept ;
    skos:prefLabel "Active" ;
    skos:memberOf ex:StatusCollection .

ex:Inactive a skos:Concept ;
    skos:prefLabel "Inactive" ;
    skos:memberOf ex:StatusCollection .

# Collection
ex:StatusCollection a skos:Collection ;
    skos:prefLabel "Status Collection" .

ex:currencyAmountProperty a sh:PropertyShape ;
    sh:path ex:amount ;
    sh:datatype xsd:decimal ;
    sh:pattern "^\\d{1,10}\\.\\d{2}$" ;  # DECIMAL(12,2)
    sh:minInclusive 0.00 ;
    sh:name "Currency Amount" ;
    ex:sqlType "DECIMAL(12,2)" .

# Required in one schema
ex:TradeSchema a sh:NodeShape ;
    sh:property [
        sh:node ex:brokerIdProperty ;
        sh:minCount 1 ;  # Required
        sh:maxCount 1
    ] .

# Optional in another schema
ex:QuoteSchema a sh:NodeShape ;
    sh:property [
        sh:node ex:brokerIdProperty ;
        sh:maxCount 1    # Optional
    ] .

# Simple cross-field constraints
ex:TradeShape a sh:NodeShape ;
    sh:targetClass ex:Trade ;

    # Date ordering constraint
    sh:property [
        sh:path ex:tradeDate ;
        sh:lessThan ex:settlementDate ;
        sh:message "Trade date must be before settlement date"@en
    ] ;

    # Currency inequality constraint
    sh:property [
        sh:path ex:buyCurrency ;
        sh:notEquals ex:sellCurrency ;
        sh:message "Buy currency must be different from sell currency"@en
    ] .

# Complex business rule with SPARQL
ex:TradeShape a sh:NodeShape ;
    sh:targetClass ex:Trade ;

    sh:sparql [
        sh:message "Large trades must have T+1 or later settlement"@en ;
        sh:select """
            PREFIX ex: <http://example.org/vocab#>
            SELECT $this ?amount ?tradeDate ?settlementDate
            WHERE {
                $this ex:amount ?amount ;
                      ex:tradeDate ?tradeDate ;
                      ex:settlementDate ?settlementDate .
                BIND((?settlementDate - ?tradeDate) / (24 * 60 * 60 * 1000) AS ?daysBetween)
                FILTER(?amount > 1000000 && ?daysBetween < 1)
            }
        """ ;
    ] .

@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix schema: <http://schema.org/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .