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101 lines
2.9 KiB
Go
101 lines
2.9 KiB
Go
/*
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* Minio Cloud Storage, (C) 2018 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 parquet
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import "github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
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func getTableValues(values interface{}, valueType parquet.Type) (tableValues []interface{}) {
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return valuesToInterfaces(values, valueType)
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}
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type table struct {
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RepetitionType parquet.FieldRepetitionType
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Type parquet.Type
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MaxDefinitionLevel int32
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MaxRepetitionLevel int32
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Path []string // Path of this column
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Values []interface{} // Parquet values
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DefinitionLevels []int32 // Definition Levels slice
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RepetitionLevels []int32 // Repetition Levels slice
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ConvertedType parquet.ConvertedType
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Encoding parquet.Encoding
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BitWidth int32
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}
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func newTableFromTable(srcTable *table) *table {
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if srcTable == nil {
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return nil
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}
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return &table{
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Type: srcTable.Type,
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Path: append([]string{}, srcTable.Path...),
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}
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}
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func (table *table) Merge(tables ...*table) {
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for i := 0; i < len(tables); i++ {
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if tables[i] == nil {
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continue
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}
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table.Values = append(table.Values, tables[i].Values...)
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table.RepetitionLevels = append(table.RepetitionLevels, tables[i].RepetitionLevels...)
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table.DefinitionLevels = append(table.DefinitionLevels, tables[i].DefinitionLevels...)
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if table.MaxDefinitionLevel < tables[i].MaxDefinitionLevel {
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table.MaxDefinitionLevel = tables[i].MaxDefinitionLevel
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}
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if table.MaxRepetitionLevel < tables[i].MaxRepetitionLevel {
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table.MaxRepetitionLevel = tables[i].MaxRepetitionLevel
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}
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}
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}
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func (table *table) Pop(numRows int64) *table {
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result := newTableFromTable(table)
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var i, num int64
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for i = int64(0); i < int64(len(table.Values)); i++ {
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if table.RepetitionLevels[i] == 0 {
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if num >= numRows {
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break
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}
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num++
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}
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if result.MaxRepetitionLevel < table.RepetitionLevels[i] {
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result.MaxRepetitionLevel = table.RepetitionLevels[i]
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}
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if result.MaxDefinitionLevel < table.DefinitionLevels[i] {
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result.MaxDefinitionLevel = table.DefinitionLevels[i]
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}
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}
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result.RepetitionLevels = table.RepetitionLevels[:i]
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result.DefinitionLevels = table.DefinitionLevels[:i]
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result.Values = table.Values[:i]
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table.RepetitionLevels = table.RepetitionLevels[i:]
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table.DefinitionLevels = table.DefinitionLevels[i:]
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table.Values = table.Values[i:]
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return result
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}
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