mirror of
https://github.com/minio/minio.git
synced 2024-12-26 07:05:55 -05:00
101 lines
2.9 KiB
Go
101 lines
2.9 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2018 Minio, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package parquet
|
|
|
|
import "github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
|
|
|
|
func getTableValues(values interface{}, valueType parquet.Type) (tableValues []interface{}) {
|
|
return valuesToInterfaces(values, valueType)
|
|
}
|
|
|
|
type table struct {
|
|
RepetitionType parquet.FieldRepetitionType
|
|
Type parquet.Type
|
|
MaxDefinitionLevel int32
|
|
MaxRepetitionLevel int32
|
|
Path []string // Path of this column
|
|
Values []interface{} // Parquet values
|
|
DefinitionLevels []int32 // Definition Levels slice
|
|
RepetitionLevels []int32 // Repetition Levels slice
|
|
ConvertedType parquet.ConvertedType
|
|
Encoding parquet.Encoding
|
|
BitWidth int32
|
|
}
|
|
|
|
func newTableFromTable(srcTable *table) *table {
|
|
if srcTable == nil {
|
|
return nil
|
|
}
|
|
|
|
return &table{
|
|
Type: srcTable.Type,
|
|
Path: append([]string{}, srcTable.Path...),
|
|
}
|
|
}
|
|
|
|
func (table *table) Merge(tables ...*table) {
|
|
for i := 0; i < len(tables); i++ {
|
|
if tables[i] == nil {
|
|
continue
|
|
}
|
|
|
|
table.Values = append(table.Values, tables[i].Values...)
|
|
table.RepetitionLevels = append(table.RepetitionLevels, tables[i].RepetitionLevels...)
|
|
table.DefinitionLevels = append(table.DefinitionLevels, tables[i].DefinitionLevels...)
|
|
|
|
if table.MaxDefinitionLevel < tables[i].MaxDefinitionLevel {
|
|
table.MaxDefinitionLevel = tables[i].MaxDefinitionLevel
|
|
}
|
|
|
|
if table.MaxRepetitionLevel < tables[i].MaxRepetitionLevel {
|
|
table.MaxRepetitionLevel = tables[i].MaxRepetitionLevel
|
|
}
|
|
}
|
|
}
|
|
|
|
func (table *table) Pop(numRows int64) *table {
|
|
result := newTableFromTable(table)
|
|
var i, num int64
|
|
for i = int64(0); i < int64(len(table.Values)); i++ {
|
|
if table.RepetitionLevels[i] == 0 {
|
|
if num >= numRows {
|
|
break
|
|
}
|
|
|
|
num++
|
|
}
|
|
|
|
if result.MaxRepetitionLevel < table.RepetitionLevels[i] {
|
|
result.MaxRepetitionLevel = table.RepetitionLevels[i]
|
|
}
|
|
|
|
if result.MaxDefinitionLevel < table.DefinitionLevels[i] {
|
|
result.MaxDefinitionLevel = table.DefinitionLevels[i]
|
|
}
|
|
}
|
|
|
|
result.RepetitionLevels = table.RepetitionLevels[:i]
|
|
result.DefinitionLevels = table.DefinitionLevels[:i]
|
|
result.Values = table.Values[:i]
|
|
|
|
table.RepetitionLevels = table.RepetitionLevels[i:]
|
|
table.DefinitionLevels = table.DefinitionLevels[i:]
|
|
table.Values = table.Values[i:]
|
|
|
|
return result
|
|
}
|