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67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package data
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import (
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"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
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)
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// ColumnChunk ...
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type ColumnChunk struct {
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parquet.ColumnChunk
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isDictPage bool
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dictPageLen int64
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dataPageLen int64
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dataLen int64
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data []byte
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}
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// Data returns the data.
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func (chunk *ColumnChunk) Data() []byte {
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return chunk.data
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}
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// DataLen returns the length of the data.
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func (chunk *ColumnChunk) DataLen() int64 {
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return chunk.dataLen
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}
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// NewRowGroup creates a new row group.
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func NewRowGroup(chunks []*ColumnChunk, numRows, offset int64) *parquet.RowGroup {
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rows := parquet.NewRowGroup()
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rows.NumRows = numRows
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for _, chunk := range chunks {
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rows.Columns = append(rows.Columns, &chunk.ColumnChunk)
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rows.TotalByteSize += chunk.dataLen
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chunk.ColumnChunk.FileOffset = offset
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if chunk.isDictPage {
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dictPageOffset := offset
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chunk.ColumnChunk.MetaData.DictionaryPageOffset = &dictPageOffset
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offset += chunk.dictPageLen
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}
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chunk.ColumnChunk.MetaData.DataPageOffset = offset
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offset += chunk.dataPageLen
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}
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return rows
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}
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