storj.io/minio@v0.0.0-20230509071714-0cbc90f649b1/pkg/s3select/internal/parquet-go/common.go (about)

     1  /*
     2   * Minio Cloud Storage, (C) 2019 Minio, Inc.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *     http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package parquet
    18  
    19  import (
    20  	"storj.io/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
    21  )
    22  
    23  func valuesToInterfaces(values interface{}, valueType parquet.Type) (tableValues []interface{}) {
    24  	switch valueType {
    25  	case parquet.Type_BOOLEAN:
    26  		for _, v := range values.([]bool) {
    27  			tableValues = append(tableValues, v)
    28  		}
    29  	case parquet.Type_INT32:
    30  		for _, v := range values.([]int32) {
    31  			tableValues = append(tableValues, v)
    32  		}
    33  	case parquet.Type_INT64:
    34  		for _, v := range values.([]int64) {
    35  			tableValues = append(tableValues, v)
    36  		}
    37  	case parquet.Type_FLOAT:
    38  		for _, v := range values.([]float32) {
    39  			tableValues = append(tableValues, v)
    40  		}
    41  	case parquet.Type_DOUBLE:
    42  		for _, v := range values.([]float64) {
    43  			tableValues = append(tableValues, v)
    44  		}
    45  	case parquet.Type_INT96, parquet.Type_BYTE_ARRAY, parquet.Type_FIXED_LEN_BYTE_ARRAY:
    46  		for _, v := range values.([][]byte) {
    47  			tableValues = append(tableValues, v)
    48  		}
    49  	}
    50  
    51  	return tableValues
    52  }
    53  
    54  func interfacesToValues(values []interface{}, valueType parquet.Type) interface{} {
    55  	switch valueType {
    56  	case parquet.Type_BOOLEAN:
    57  		bs := make([]bool, len(values))
    58  		for i := range values {
    59  			bs[i] = values[i].(bool)
    60  		}
    61  		return bs
    62  	case parquet.Type_INT32:
    63  		i32s := make([]int32, len(values))
    64  		for i := range values {
    65  			i32s[i] = values[i].(int32)
    66  		}
    67  		return i32s
    68  	case parquet.Type_INT64:
    69  		i64s := make([]int64, len(values))
    70  		for i := range values {
    71  			i64s[i] = values[i].(int64)
    72  		}
    73  		return i64s
    74  	case parquet.Type_FLOAT:
    75  		f32s := make([]float32, len(values))
    76  		for i := range values {
    77  			f32s[i] = values[i].(float32)
    78  		}
    79  		return f32s
    80  	case parquet.Type_DOUBLE:
    81  		f64s := make([]float64, len(values))
    82  		for i := range values {
    83  			f64s[i] = values[i].(float64)
    84  		}
    85  		return f64s
    86  	case parquet.Type_INT96, parquet.Type_BYTE_ARRAY, parquet.Type_FIXED_LEN_BYTE_ARRAY:
    87  		array := make([][]byte, len(values))
    88  		for i := range values {
    89  			array[i] = values[i].([]byte)
    90  		}
    91  		return array
    92  	}
    93  
    94  	return nil
    95  }