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108 lines
2.3 KiB
108 lines
2.3 KiB
5 years ago
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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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"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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