github.com/hasnat/dolt/go@v0.0.0-20210628190320-9eb5d843fbb7/libraries/doltcore/fkconstrain/errors.go (about)

     1  // Copyright 2021 Dolthub, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package fkconstrain
    16  
    17  import (
    18  	"errors"
    19  	"fmt"
    20  )
    21  
    22  var ErrGenericForeignKeyConstraintViolation = errors.New("foreign key constraint violation")
    23  
    24  // This represents a commit time violation that is different from the FK errors in go-mysql-server (sql/errors.go)
    25  type GenericForeignKeyError struct {
    26  	tableName           string
    27  	referencedTableName string
    28  	fkName              string
    29  	keyStr              string
    30  }
    31  
    32  func (err *GenericForeignKeyError) Error() string {
    33  	return fmt.Sprintf("Foreign key violation on fk: `%s`, table: `%s`, referenced table: `%s`, key: `%s`", err.fkName, err.tableName, err.referencedTableName, err.keyStr)
    34  }
    35  
    36  func (err *GenericForeignKeyError) Unwrap() error {
    37  	return ErrGenericForeignKeyConstraintViolation
    38  }