Enum QueryEvaluationError 

#[non_exhaustive]
pub enum QueryEvaluationError {
    Parsing(SparqlSyntaxError),
    Storage(StorageError),
    GraphParsing(RdfParseError),
    ResultsParsing(QueryResultsParseError),
    ResultsSerialization(Error),
    Service(Box<dyn Error + Sync + Send>),
    GraphAlreadyExists(NamedNode),
    GraphDoesNotExist(NamedNode),
    UnboundService,
    UnsupportedService(NamedNode),
    UnsupportedContentType(String),
    ServiceDoesNotReturnSolutions,
    NotAGraph,
    Engine(DataFusionError),
    NotImplemented(String),
    InternalError(String),
}

A SPARQL evaluation error.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Parsing(SparqlSyntaxError)

An error in SPARQL parsing.

Storage(StorageError)

An error from the storage.

GraphParsing(RdfParseError)

An error while parsing an external RDF file.

ResultsParsing(QueryResultsParseError)

An error while parsing an external result file (likely from a federated query).

ResultsSerialization(Error)

An error returned during results serialization.

Service(Box<dyn Error + Sync + Send>)

Error during SERVICE evaluation

GraphAlreadyExists(NamedNode)

Error when CREATE tries to create an already existing graph

GraphDoesNotExist(NamedNode)

Error when DROP or CLEAR tries to remove a not existing graph

UnboundService

The variable storing the SERVICE name is unbound

UnsupportedService(NamedNode)

The given SERVICE is not supported

UnsupportedContentType(String)

The given content media type returned from an HTTP response is not supported (SERVICE and LOAD)

ServiceDoesNotReturnSolutions

The SERVICE call has not returns solutions

NotAGraph

The results are not a RDF graph

Engine(DataFusionError)

NotImplemented(String)

InternalError(String)

Implementations

impl QueryEvaluationError

pub fn internal<T>(cause: String) -> Result<T, QueryEvaluationError>

Trait Implementations

impl Debug for QueryEvaluationError

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Display for QueryEvaluationError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Error for QueryEvaluationError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<DataFusionError> for QueryEvaluationError

fn from(error: DataFusionError) -> QueryEvaluationError

Converts to this type from the input type.

impl From<Infallible> for QueryEvaluationError

fn from(error: Infallible) -> QueryEvaluationError

Converts to this type from the input type.

impl From<QueryEvaluationError> for SerializerError

fn from(source: QueryEvaluationError) -> Self

Converts to this type from the input type.

impl From<QueryResultsParseError> for QueryEvaluationError

fn from(source: QueryResultsParseError) -> QueryEvaluationError

Converts to this type from the input type.

impl From<RdfParseError> for QueryEvaluationError

fn from(source: RdfParseError) -> QueryEvaluationError

Converts to this type from the input type.

impl From<SparqlEvaluationError> for QueryEvaluationError

fn from(error: SparqlEvaluationError) -> QueryEvaluationError

Converts to this type from the input type.

impl From<SparqlSyntaxError> for QueryEvaluationError

fn from(source: SparqlSyntaxError) -> QueryEvaluationError

Converts to this type from the input type.

impl From<StorageError> for QueryEvaluationError

fn from(source: StorageError) -> QueryEvaluationError

Converts to this type from the input type.