Module parquet::schema::types

Contains structs and methods to build Parquet schema and schema descriptors.

Structs

• BasicTypeInfo
  Basic type info. This contains information such as the name of the type, the repetition level, the logical type and the kind of the type (group, primitive).
• ColumnDescriptor
  A descriptor for leaf-level primitive columns. This encapsulates information such as definition and repetition levels and is used to re-assemble nested data.
• ColumnPath
  Represents a path in a nested schema
• GroupTypeBuilder
  A builder for group types. All attributes are optional except the name. Note that if not specified explicitly, None is used as the repetition of the group, which means it is a root (message) type.
• PrimitiveTypeBuilder
  A builder for primitive types. All attributes are optional except the name and physical type. Note that if not specified explicitly, Repetition::OPTIONAL is used.
• SchemaDescriptor
  A schema descriptor. This encapsulates the top-level schemas for all the columns, as well as all descriptors for all the primitive columns.

Enums

• Type
  Representation of a Parquet type. Used to describe primitive leaf fields and structs, including top-level schema. Note that the top-level schema type is represented using GroupType whose repetition is None.

Functions

• from_thrift
  Method to convert from Thrift.
• to_thrift
  Method to convert to Thrift.

Type Aliases

• ColumnDescPtr
  Type alias for Arc<ColumnDescriptor>.
• SchemaDescPtr
  Type alias for Arc<SchemaDescriptor>.
• TypePtr
  Type alias for Arc<Type>.