mirror of https://github.com/minio/minio.git
66 lines
1.6 KiB
Go
66 lines
1.6 KiB
Go
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/*
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* Minio Cloud Storage, (C) 2019 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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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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