wehub-resource-sync
65 lines
2.7 KiB
Go
65 lines
2.7 KiB
Go
// Copyright 2025 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 doltdb
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import (
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"context"
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"github.com/dolthub/dolt/go/store/hash"
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"github.com/dolthub/go-mysql-server/sql"
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)
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// RootObject is an object that is located on the root, rather than inside another object (table, schema, etc.). This is
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// primarily used by Doltgres to store root-level objects (sequences, functions, etc.).
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type RootObject interface {
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// HashOf returns the hash of the underlying struct.
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HashOf(ctx context.Context) (hash.Hash, error)
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// Name returns the name of the root object.
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Name() TableName
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}
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// ConflictRootObject is a RootObject that contains conflict information.
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type ConflictRootObject interface {
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RootObject
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// DiffCount returns the number of diffs that this conflict will return.
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DiffCount(ctx *sql.Context) (int, error)
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// RemoveDiffs removes the conflicts indicated by the given diffs. Returns an updated root object that will be
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// written to the root.
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RemoveDiffs(ctx *sql.Context, diffs []RootObjectDiff) (ConflictRootObject, error)
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// Rows returns the rows that represent conflicting portions of a root object. These should be able to be converted
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// to a RootObjectDiff via FromRow.
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Rows(ctx *sql.Context) (sql.RowIter, error)
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// Schema returns the schema that should be displayed.
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Schema(originatingTableName string) sql.Schema
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// UpdateField updates the root object by applying the change between the two diffs. Returns an updated root object
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// that will be written to the root.
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UpdateField(ctx *sql.Context, oldDiff RootObjectDiff, newDiff RootObjectDiff) (ConflictRootObject, error)
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}
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// RootObjectDiff is a diff for the RootObject.
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type RootObjectDiff interface {
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// CompareIds returns an integer from -1 to 1, with 0 meaning the diffs are equal to each other. This only compares the
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// unique identifier for the diff, so different diffs may return that they are equal.
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CompareIds(ctx context.Context, other RootObjectDiff) (int, error)
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// ToRow returns the diff as a row.
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ToRow(ctx *sql.Context) (sql.Row, error)
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}
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// RootObjectDiffFromRow returns a diff from the given row.
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var RootObjectDiffFromRow = func(ctx *sql.Context, conflict ConflictRootObject, row sql.Row) (RootObjectDiff, error) {
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panic("Dolt impl used")
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}
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