chore: import upstream snapshot with attribution
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@@ -0,0 +1,138 @@
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// Copyright 2024 Dolthub, 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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package types
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import (
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"github.com/cockroachdb/apd/v3"
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"github.com/cockroachdb/errors"
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"github.com/dolthub/go-mysql-server/sql"
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gmstypes "github.com/dolthub/go-mysql-server/sql/types"
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"github.com/dolthub/doltgresql/core/id"
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"github.com/dolthub/doltgresql/utils"
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)
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// JsonB is the deserialized and structured version of JSON that deals with JsonDocument.
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var JsonB = &DoltgresType{
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ID: toInternal("jsonb"),
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TypLength: int16(-1),
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PassedByVal: false,
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TypType: TypeType_Base,
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TypCategory: TypeCategory_UserDefinedTypes,
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IsPreferred: false,
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IsDefined: true,
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Delimiter: ",",
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RelID: id.Null,
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SubscriptFunc: toFuncID("jsonb_subscript_handler", toInternal("internal")),
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Elem: internalNullType,
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Array: internalNullType,
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InputFunc: toFuncID("jsonb_in", toInternal("cstring")),
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OutputFunc: toFuncID("jsonb_out", toInternal("jsonb")),
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ReceiveFunc: toFuncID("jsonb_recv", toInternal("internal")),
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SendFunc: toFuncID("jsonb_send", toInternal("jsonb")),
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ModInFunc: toFuncID("-"),
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ModOutFunc: toFuncID("-"),
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AnalyzeFunc: toFuncID("-"),
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Align: TypeAlignment_Int,
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Storage: TypeStorage_Extended,
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NotNull: false,
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BaseTypeType: internalNullType,
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TypMod: -1,
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NDims: 0,
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TypCollation: id.NullCollation,
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DefaulBin: "",
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Default: "",
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Acl: nil,
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Checks: nil,
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attTypMod: -1,
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CompareFunc: toFuncID("jsonb_cmp", toInternal("jsonb"), toInternal("jsonb")),
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SerializationFunc: serializeTypeJsonB,
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DeserializationFunc: deserializeTypeJsonB,
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}
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// serializeTypeJsonB handles serialization from the standard representation to our serialized representation that is
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// written in Dolt. This is used for the legacy ExtendedEnc storage path.
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// Deprecated. These values are now serialized and deserialized by Dolt natively.
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func serializeTypeJsonB(ctx *sql.Context, t *DoltgresType, val any) ([]byte, error) {
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res, err := sql.UnwrapAny(ctx, val)
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if err != nil {
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return nil, err
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}
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var doc JsonDocument
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switch v := res.(type) {
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case sql.JSONWrapper:
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j, err := v.ToInterface(ctx)
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if err != nil {
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return nil, err
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}
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jsonVal, err := ConvertToJsonDocument(j)
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if err != nil {
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return nil, err
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}
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doc = JsonDocument{Value: jsonVal}
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default:
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return nil, errors.Newf("jsonb: unexpected types %T, %T", res, val)
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}
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writer := utils.NewWriter(256)
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JsonValueSerialize(writer, doc.Value)
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return writer.Data(), nil
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}
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// deserializeTypeJsonB handles deserialization from the Dolt serialized format to our standard representation used by
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// expressions and nodes. This is used for the legacy ExtendedEnc storage path.
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// Deprecated. These values are now serialized and deserialized by Dolt natively, but previous releases still write
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// values in this old format.
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func deserializeTypeJsonB(ctx *sql.Context, t *DoltgresType, data []byte) (any, error) {
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if len(data) == 0 {
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return nil, nil
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}
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reader := utils.NewReader(data)
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jsonValue, err := JsonValueDeserialize(reader)
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if err != nil {
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return nil, err
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}
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return gmstypes.JSONDocument{Val: jsonValueToInterface(jsonValue)}, nil
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}
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// jsonValueToInterface converts a legacy JsonValue to a native Go interface value.
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func jsonValueToInterface(value JsonValue) any {
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switch v := value.(type) {
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case JsonValueObject:
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obj := make(map[string]any, len(v.Items))
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for _, item := range v.Items {
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obj[item.Key] = jsonValueToInterface(item.Value)
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}
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return obj
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case JsonValueArray:
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arr := make([]any, len(v))
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for i, item := range v {
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arr[i] = jsonValueToInterface(item)
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}
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return arr
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case JsonValueString:
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return string(v)
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case JsonValueNumber:
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d := apd.Decimal(v)
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return &d
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case JsonValueBoolean:
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return bool(v)
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case JsonValueNull:
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return nil
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default:
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return nil
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}
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}
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