org.apache.carbondata.hadoop.readsupport

Interface CarbonReadSupport<T>

All Known Implementing Classes:

CarbonRowReadSupport, DictionaryDecodeReadSupport

public interface CarbonReadSupport<T>

This is the interface to convert data reading from RecordReader to row representation.

Method Summary

Modifier and Type	Method and Description
void	close() cleanup step if necessary
void	initialize(org.apache.carbondata.core.metadata.schema.table.column.CarbonColumn[] carbonColumns, org.apache.carbondata.core.metadata.schema.table.CarbonTable carbonTable) Initialization if needed based on the projected column list
T	readRow(Object[] data) convert column data back to row representation

Method Detail

initialize

void initialize(org.apache.carbondata.core.metadata.schema.table.column.CarbonColumn[] carbonColumns,
                org.apache.carbondata.core.metadata.schema.table.CarbonTable carbonTable)
         throws IOException

Initialization if needed based on the projected column list

Parameters:

carbonColumns - column list

carbonTable - table identifier

Throws:

IOException

readRow

T readRow(Object[] data)

convert column data back to row representation

Parameters:

data - column data

close

void close()

cleanup step if necessary