layout

type Chunk struct {
	Pages       []*Page
	ChunkHeader *parquet.ColumnChunk
}

type DictRecType struct {
	DictMap   map[interface{}]int32
	DictSlice []interface{}
	Type      parquet.Type
}

type Page struct {
	//Header of a page
	Header *parquet.PageHeader
	//Table to store values
	DataTable *Table
	//Compressed data of the page, which is written in parquet file
	RawData []byte
	//Compress type: gzip/snappy/zstd/none
	CompressType parquet.CompressionCodec
	//Schema
	Schema *parquet.SchemaElement
	//Path in schema(include the root)
	Path []string
	//Maximum of the values
	MaxVal interface{}
	//Minimum of the values
	MinVal interface{}
	//NullCount
	NullCount *int64
	//Tag info
	Info *common.Tag

	PageSize int32
}

type RowGroup struct {
	Chunks         []*Chunk
	RowGroupHeader *parquet.RowGroup
}

type Table struct {
	//Repetition type of the values: REQUIRED/OPTIONAL/REPEATED
	RepetitionType parquet.FieldRepetitionType
	//Schema
	Schema *parquet.SchemaElement
	//Path of this column
	Path []string
	//Maximum of definition levels
	MaxDefinitionLevel int32
	//Maximum of repetition levels
	MaxRepetitionLevel int32

	//Parquet values
	Values []interface{}
	//Definition Levels slice
	DefinitionLevels []int32
	//Repetition Levels slice
	RepetitionLevels []int32

	//Tag info
	Info *common.Tag
}