duckdb::BaseUnionData Class Reference

Collaboration diagram for duckdb::BaseUnionData:

Public Member Functions
	BaseUnionData (OpenFileInfo file_p)
const string &	GetFileName ()
virtual optional_idx	TryGetCardinalityEstimate () const
virtual unique_ptr< BaseStatistics >	GetStatistics (ClientContext &context, const string &name)
template<class TARGET >
TARGET &	Cast ()
template<class TARGET >
const TARGET &	Cast () const

Public Attributes
OpenFileInfo	file
shared_ptr< BaseFileReader >	reader
vector< string >	names
vector< LogicalType >	types

Detailed Description

Parent class of union data - used for the UNION BY NAME. This is effectively a cache that is kept around per file that can be used to speed up opening the same file again afterwards - to avoid doing double work.

Constructor & Destructor Documentation

BaseUnionData()

duckdb::BaseUnionData::BaseUnionData ( OpenFileInfo  file_p )

inlineexplicit

                                                : file(std::move(file_p)) {
    }

Member Function Documentation

GetFileName()

const string & duckdb::BaseUnionData::GetFileName ( )

inline

                                {
        return file.path;
    }

TryGetCardinalityEstimate()

virtual optional_idx duckdb::BaseUnionData::TryGetCardinalityEstimate ( ) const

inlinevirtual

                                                           {
        return optional_idx();
    }

GetStatistics()

unique_ptr< BaseStatistics > duckdb::BaseUnionData::GetStatistics ( ClientContext &  context, const string &  name  )

virtual

                                                                                                  {
    return nullptr;
}

Cast() [1/2]

template<class TARGET >

TARGET & duckdb::BaseUnionData::Cast ( )

inline

                   {
        DynamicCastCheck<TARGET>(this);
        return reinterpret_cast<TARGET &>(*this);
    }

Cast() [2/2]

template<class TARGET >

const TARGET & duckdb::BaseUnionData::Cast ( ) const

inline

                               {
        DynamicCastCheck<TARGET>(this);
        return reinterpret_cast<const TARGET &>(*this);
    }

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

• external/duckdb/duckdb.cpp