接口的使用
org.apache.paimon.format.parquet.reader.ColumnReader

使用ColumnReader的程序包

程序包	说明
org.apache.paimon.format.parquet.reader

org.apache.paimon.format.parquet.reader中ColumnReader的使用

实现ColumnReader的org.apache.paimon.format.parquet.reader中的类

限定符和类型	类和说明
class	AbstractColumnReader<VECTOR extends org.apache.paimon.data.columnar.writable.WritableColumnVector> Abstract ColumnReader.
class	BooleanColumnReader Boolean ColumnReader.
class	ByteColumnReader Byte ColumnReader.
class	BytesColumnReader Bytes ColumnReader.
class	DoubleColumnReader Double ColumnReader.
class	FixedLenBytesColumnReader<VECTOR extends org.apache.paimon.data.columnar.writable.WritableColumnVector> Fixed length bytes ColumnReader, just for Decimal.
class	FloatColumnReader Float ColumnReader.
class	IntColumnReader Int ColumnReader.
class	LongColumnReader Long ColumnReader.
class	NestedColumnReader This ColumnReader mainly used to read `Group` type in parquet such as `Map`, `Array`, `Row`.
class	NestedPrimitiveColumnReader Reader to read nested primitive column.
class	RowColumnReader Row ColumnReader.
class	ShortColumnReader Short ColumnReader.
class	TimestampColumnReader Timestamp ColumnReader.

返回ColumnReader的org.apache.paimon.format.parquet.reader中的方法

限定符和类型	方法和说明
static ColumnReader	ParquetSplitReaderUtil.createColumnReader(org.apache.paimon.types.DataType fieldType, org.apache.parquet.schema.Type type, List<org.apache.parquet.column.ColumnDescriptor> columnDescriptors, org.apache.parquet.column.page.PageReadStore pages, ParquetField field, int depth)

类型变量类型为ColumnReader的org.apache.paimon.format.parquet.reader中的构造器参数

构造器和说明
RowColumnReader(List<ColumnReader> fieldReaders)