org.apache.flink.formats.parquet.vector.reader

接口 ColumnReader<VECTOR extends org.apache.flink.table.data.vector.writable.WritableColumnVector>

所有已知实现类:

AbstractColumnReader, BooleanColumnReader, ByteColumnReader, BytesColumnReader, DoubleColumnReader, FixedLenBytesColumnReader, FloatColumnReader, IntColumnReader, LongColumnReader, ShortColumnReader, TimestampColumnReader

public interface ColumnReader<VECTOR extends org.apache.flink.table.data.vector.writable.WritableColumnVector>

Read a batch of records for a column to WritableColumnVector from parquet data file.

方法概要

限定符和类型	方法和说明
void	readToVector(int readNumber, VECTOR vector)

方法详细资料

readToVector

void readToVector(int readNumber,
                  VECTOR vector)
           throws IOException

参数:

readNumber - number to read.

vector - vector to write.

抛出:

IOException