pub struct SourceReferenceResolver {
inner: BTreeMap<Ident, BTreeMap<Ident, BTreeMap<Ident, usize>>>,
}
Expand description
Stores and resolves references to a &[T: ExternalCatalogReference]
.
This is meant to provide an API to quickly look up a source’s subsources.
For sources that do not provide any subsources, use the Default
implementation, which is empty and will not be able to resolve any
references.
Fields§
§inner: BTreeMap<Ident, BTreeMap<Ident, BTreeMap<Ident, usize>>>
Implementations§
Source§impl<'a> SourceReferenceResolver
impl<'a> SourceReferenceResolver
Sourcepub fn new<T: ExternalCatalogReference>(
database: &str,
referenceable_items: &'a [T],
) -> Result<SourceReferenceResolver, ExternalReferenceResolutionError>
pub fn new<T: ExternalCatalogReference>( database: &str, referenceable_items: &'a [T], ) -> Result<SourceReferenceResolver, ExternalReferenceResolutionError>
Sourcepub fn resolve(
&self,
name: &[Ident],
canonicalize_to_width: usize,
) -> Result<(UnresolvedItemName, usize), ExternalReferenceResolutionError>
pub fn resolve( &self, name: &[Ident], canonicalize_to_width: usize, ) -> Result<(UnresolvedItemName, usize), ExternalReferenceResolutionError>
Returns the canonical reference and index from which it originated in
the referenceable_items
provided to Self::new
.
§Args
name
is&[Ident]
to let users provide the inner element ofUnresolvedItemName
.canonicalize_to_width
limits the number of elements in the returnedUnresolvedItemName
;this is useful if the source type requires contriving database and schema names that a subsource should not persist as its reference.
§Errors
- If
name
does not resolve to an item inself.inner
.
§Panics
- If
canonicalize_to_width`` is not in
1..=3`.
Sourcepub fn resolve_idx(
&self,
name: &[Ident],
) -> Result<usize, ExternalReferenceResolutionError>
pub fn resolve_idx( &self, name: &[Ident], ) -> Result<usize, ExternalReferenceResolutionError>
Returns the index from which it originated in the referenceable_items
provided to Self::new
.
§Args
name
is &[Ident]
to let users provide the inner element of
UnresolvedItemName
.
§Errors
- If
name
does not resolve to an item inself.inner
.
Sourcefn resolve_inner<'name: 'a>(
&'a self,
name: &'name [Ident],
) -> Result<(&'a Ident, &'a Ident, usize), ExternalReferenceResolutionError>
fn resolve_inner<'name: 'a>( &'a self, name: &'name [Ident], ) -> Result<(&'a Ident, &'a Ident, usize), ExternalReferenceResolutionError>
Returns the index from which it originated in the referenceable_items
provided to Self::new
.
§Args
name
is &[Ident]
to let users provide the inner element of
UnresolvedItemName
.
§Return
Returns a tuple whose elements are:
- The “database”- or top-level namespace of the reference.
- The “schema”- or second-level namespace of the reference.
- The index to find the item in
referenceable_items
argument provided toSourceReferenceResolver::new
.
§Errors
- If
name
does not resolve to an item inself.inner
.
Trait Implementations§
Source§impl Clone for SourceReferenceResolver
impl Clone for SourceReferenceResolver
Source§fn clone(&self) -> SourceReferenceResolver
fn clone(&self) -> SourceReferenceResolver
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreSource§impl Debug for SourceReferenceResolver
impl Debug for SourceReferenceResolver
Source§impl Default for SourceReferenceResolver
impl Default for SourceReferenceResolver
Source§fn default() -> SourceReferenceResolver
fn default() -> SourceReferenceResolver
Source§impl<'de> Deserialize<'de> for SourceReferenceResolver
impl<'de> Deserialize<'de> for SourceReferenceResolver
Source§fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
Source§impl PartialEq for SourceReferenceResolver
impl PartialEq for SourceReferenceResolver
Source§impl Serialize for SourceReferenceResolver
impl Serialize for SourceReferenceResolver
impl Eq for SourceReferenceResolver
impl StructuralPartialEq for SourceReferenceResolver
Auto Trait Implementations§
impl Freeze for SourceReferenceResolver
impl RefUnwindSafe for SourceReferenceResolver
impl Send for SourceReferenceResolver
impl Sync for SourceReferenceResolver
impl Unpin for SourceReferenceResolver
impl UnwindSafe for SourceReferenceResolver
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