Struct TestCatalog

pub struct TestCatalog {
    objects: BTreeMap<String, (GlobalId, Vec<String>, RelationType)>,
    names: BTreeMap<GlobalId, String>,
}

A catalog that holds types of objects previously created for the unit test.

This is for the purpose of allowing MirRelationExprs to refer to them later.

Fields

objects: BTreeMap<String, (GlobalId, Vec<String>, RelationType)>

names: BTreeMap<GlobalId, String>

Implementations

impl<'a> TestCatalog

pub fn insert( &mut self, name: &str, cols: Vec<String>, typ: RelationType, transient: bool, ) -> Result<GlobalId, String>

Registers an object in the catalog.

Specifying transient as true allows the object to be deleted by Self::remove_transient_objects.

Returns the GlobalId assigned by the catalog to the object.

Errors if an object of the same name is already in the catalog.

pub fn get( &'a self, name: &str, ) -> Option<&'a (GlobalId, Vec<String>, RelationType)>

pub fn get_source_name(&'a self, id: &GlobalId) -> Option<&'a String>

Looks up the name of the object referred to as id.

pub fn remove_transient_objects(&mut self)

Clears all transient objects from the catalog.

Trait Implementations

impl Debug for TestCatalog

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

Formats the value using the given formatter.

impl Default for TestCatalog

fn default() -> TestCatalog

Returns the “default value” for a type.

impl ExprHumanizer for TestCatalog

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

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

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

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

fn humanize_id_parts(&self, id: GlobalId) -> Option<Vec<String>>

Like Self::humanize_id, but returns the constituent parts of the name as individual elements.

fn humanize_scalar_type(&self, ty: &ScalarType, postgres_compat: bool) -> String

Returns a human-readable name for the specified scalar type. Used in, e.g., EXPLAIN and error msgs, in which case exact Postgres compatibility is less important than showing as much detail as possible. Also used in pg_typeof, where Postgres compatibility is more important.

fn column_names_for_id(&self, id: GlobalId) -> Option<Vec<String>>

Returns a vector of column names for the relation identified by id.

fn humanize_column(&self, id: GlobalId, column: usize) -> Option<String>

Returns the #column name for the relation identified by id.

fn id_exists(&self, id: GlobalId) -> bool

Returns whether the specified id exists.

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

Returns a human-readable name for the specified column type. Used in, e.g., EXPLAIN and error msgs, in which case exact Postgres compatibility is less important than showing as much detail as possible. Also used in pg_typeof, where Postgres compatibility is more important.