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109 lines
2.5 KiB
Go
109 lines
2.5 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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"fmt"
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"github.com/minio/minio/pkg/s3select/internal/parquet-go/gen-go/parquet"
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"github.com/tidwall/gjson"
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)
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type jsonValue struct {
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result *gjson.Result
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path *string
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}
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func (v *jsonValue) String() string {
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if v.result == nil {
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return "<nil>"
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}
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return fmt.Sprintf("%v", *v.result)
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}
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func (v *jsonValue) IsNull() bool {
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return v.result == nil || v.result.Type == gjson.Null
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}
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func (v *jsonValue) Get(path string) *jsonValue {
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if v.path != nil {
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var result *gjson.Result
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if *v.path == path {
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result = v.result
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}
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return resultToJSONValue(result)
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}
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if v.result == nil {
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return resultToJSONValue(nil)
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}
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result := v.result.Get(path)
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if !result.Exists() {
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return resultToJSONValue(nil)
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}
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return resultToJSONValue(&result)
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}
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func (v *jsonValue) GetValue(parquetType parquet.Type, convertedType *parquet.ConvertedType) (interface{}, error) {
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if v.result == nil {
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return nil, nil
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}
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return resultToParquetValue(*v.result, parquetType, convertedType)
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}
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func (v *jsonValue) GetArray() ([]gjson.Result, error) {
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if v.result == nil {
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return nil, nil
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}
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return resultToArray(*v.result)
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}
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func (v *jsonValue) Range(iterator func(key, value gjson.Result) bool) error {
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if v.result == nil || v.result.Type == gjson.Null {
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return nil
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}
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if v.result.Type != gjson.JSON || !v.result.IsObject() {
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return fmt.Errorf("result is not Map but %v", v.result.Type)
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}
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v.result.ForEach(iterator)
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return nil
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}
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func resultToJSONValue(result *gjson.Result) *jsonValue {
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return &jsonValue{
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result: result,
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}
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}
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func bytesToJSONValue(data []byte) (*jsonValue, error) {
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if !gjson.ValidBytes(data) {
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return nil, fmt.Errorf("invalid JSON data")
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}
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result := gjson.ParseBytes(data)
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return resultToJSONValue(&result), nil
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}
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