Visitor for pruning columns based on selected field IDs. More...

#include <type_util.h>

Public Member Functions
	PruneColumnVisitor (const std::unordered_set< int32_t > &selected_ids, bool select_full_types)

Result< std::shared_ptr< Type > >	Visit (const std::shared_ptr< Type > &type) const

Result< std::shared_ptr< Type > >	Visit (const SchemaField &field) const

Result< std::shared_ptr< Type > >	Visit (const std::shared_ptr< StructType > &type) const

Result< std::shared_ptr< Type > >	Visit (const std::shared_ptr< ListType > &type) const

Result< std::shared_ptr< Type > >	Visit (const std::shared_ptr< MapType > &type) const

Static Public Member Functions
static SchemaField	MakeField (const SchemaField &field, std::shared_ptr< Type > type)

Detailed Description

Visitor for pruning columns based on selected field IDs.

This visitor traverses a schema and creates a projected version containing only the specified fields. When select_full_types is true, a field with all its sub-fields are selected if its field-id has been selected; otherwise, only leaf fields of selected field-ids are selected.

Note: It returns an error when projection is not successful.

The documentation for this class was generated from the following files:

iceberg/util/type_util.h
iceberg/util/type_util.cc

Public Member Functions

Static Public Member Functions

Detailed Description