Struct mz_sql::catalog::DummyCatalog

pub struct DummyCatalog;

A dummy SessionCatalog implementation.

This implementation is suitable for use in tests that plan queries which are not demanding of the catalog, as many methods are unimplemented.

Trait Implementations

impl Debug for DummyCatalog

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

Formats the value using the given formatter.

impl ExprHumanizer for DummyCatalog

fn humanize_id(&self, _: GlobalId) -> Option<String>

Attempts to return the a human-readable string for the relation identified by id.

fn humanize_id_unqualified(&self, _: GlobalId) -> Option<String>

Same as above, but without qualifications, e.g., only foo for materialize.public.foo.

fn humanize_scalar_type(&self, _: &ScalarType) -> String

Returns a human-readable name for the specified scalar type.

fn humanize_column_type(&self, typ: &ColumnType) -> String

Returns a human-readable name for the specified scalar type.

impl SessionCatalog for DummyCatalog

fn active_role_id(&self) -> &RoleId

Returns the id of the role that is issuing the query.

fn active_database(&self) -> Option<&DatabaseId>

Returns the database to use if one is not explicitly specified.

fn active_cluster(&self) -> &str

Returns the cluster to use if one is not explicitly specified.

fn search_path(&self) -> &[(ResolvedDatabaseSpecifier, SchemaSpecifier)]

Returns the resolved search paths for the current user. (Invalid search paths are skipped.)

fn get_prepared_statement_desc(&self, _: &str) -> Option<&StatementDesc>

Returns the descriptor of the named prepared statement on the session, or None if the prepared statement does not exist.

fn resolve_database(&self, _: &str) -> Result<&dyn CatalogDatabase, CatalogError>

Resolves the named database.

fn get_database(&self, _: &DatabaseId) -> &dyn CatalogDatabase

Gets a database by its ID.

fn resolve_schema(
    &self,
    _: Option<&str>,
    _: &str
) -> Result<&dyn CatalogSchema, CatalogError>

Resolves a partially-specified schema name.

fn resolve_schema_in_database(
    &self,
    _: &ResolvedDatabaseSpecifier,
    _: &str
) -> Result<&dyn CatalogSchema, CatalogError>

Resolves a schema name within a specified database.

fn get_schema(
    &self,
    _: &ResolvedDatabaseSpecifier,
    _: &SchemaSpecifier
) -> &dyn CatalogSchema

Gets a schema by its ID.

fn get_role(&self, _: &RoleId) -> &dyn CatalogRole

Gets a role by its ID.

fn try_get_role(&self, _: &RoleId) -> Option<&dyn CatalogRole>

Gets a role by its ID.

fn is_system_schema(&self, _: &str) -> bool

Returns true if schema is an internal system schema, false otherwise

fn resolve_role(&self, _: &str) -> Result<&dyn CatalogRole, CatalogError>

Resolves the named role.

fn resolve_item(
    &self,
    _: &PartialObjectName
) -> Result<&dyn CatalogItem, CatalogError>

Resolves a partially-specified item name.

fn resolve_function(
    &self,
    _: &PartialObjectName
) -> Result<&dyn CatalogItem, CatalogError>

Performs the same operation as SessionCatalog::resolve_item but for functions within the catalog.

fn resolve_cluster<'a, 'b>(
    &'a self,
    _: Option<&'b str>
) -> Result<&'a dyn CatalogCluster<'_>, CatalogError>

Resolves the named cluster.

fn get_item(&self, _: &GlobalId) -> &dyn CatalogItem

Gets an item by its ID.

fn try_get_item(&self, _: &GlobalId) -> Option<&dyn CatalogItem>

Gets an item by its ID.

fn item_exists(&self, _: &QualifiedObjectName) -> bool

Reports whether the specified type exists in the catalog.

fn get_cluster(&self, _: ClusterId) -> &dyn CatalogCluster<'_>

Gets a cluster by ID.

fn resolve_full_name(&self, _: &QualifiedObjectName) -> FullObjectName

Returns a fully qualified human readable name from fully qualified non-human readable name

fn config(&self) -> &CatalogConfig

Returns the configuration of the catalog.

fn now(&self) -> EpochMillis

Returns the number of milliseconds since the system epoch. For normal use this means the Unix epoch. This can safely be mocked in tests and start at 0.

fn find_available_name(&self, name: QualifiedObjectName) -> QualifiedObjectName

Finds a name like name that is not already in use.

fn aws_privatelink_availability_zones(&self) -> Option<BTreeSet<String>>

Returns the set of supported AWS PrivateLink availability zone ids.

fn active_database_name(&self) -> Option<&str>

Returns the database to use if one is not explicitly specified.