errors.go

/*
 Copyright 2020 The Qmgo Authors.
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
     http://www.apache.org/licenses/LICENSE-2.0
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
*/

package qmgo

import (
	"errors"
	"strings"

	"go.mongodb.org/mongo-driver/mongo"
)

var (
	// ErrQueryNotSlicePointer return if result argument is not a pointer to a slice
	ErrQueryNotSlicePointer = errors.New("result argument must be a pointer to a slice")
	// ErrQueryNotSliceType return if result argument is not slice address
	ErrQueryNotSliceType = errors.New("result argument must be a slice address")
	// ErrQueryResultTypeInconsistent return if result type is not equal mongodb value type
	ErrQueryResultTypeInconsistent = errors.New("result type is not equal mongodb value type")
	// ErrQueryResultValCanNotChange return if the value of result can not be changed
	ErrQueryResultValCanNotChange = errors.New("the value of result can not be changed")
	// ErrNoSuchDocuments return if no document found
	ErrNoSuchDocuments = mongo.ErrNoDocuments
	// ErrTransactionRetry return if transaction need to retry
	ErrTransactionRetry = errors.New("retry transaction")
	// ErrTransactionNotSupported return if transaction not supported
	ErrTransactionNotSupported = errors.New("transaction not supported")
	// ErrNotSupportedUsername return if username is invalid
	ErrNotSupportedUsername = errors.New("username not supported")
	// ErrNotSupportedPassword return if password is invalid
	ErrNotSupportedPassword = errors.New("password not supported")
	// ErrNotValidSliceToInsert return if insert argument is not valid slice
	ErrNotValidSliceToInsert = errors.New("must be valid slice to insert")
	// ErrReplacementContainUpdateOperators return if replacement document contain update operators
	ErrReplacementContainUpdateOperators = errors.New("replacement document cannot contain keys beginning with '$'")
)

// IsErrNoDocuments check if err is no documents, both mongo-go-driver error and qmgo custom error
// Deprecated, simply call if err == ErrNoSuchDocuments or if err == mongo.ErrNoDocuments
func IsErrNoDocuments(err error) bool {
	if err == ErrNoSuchDocuments {
		return true
	}
	return false
}

// IsDup check if err is mongo E11000 (duplicate err)。
func IsDup(err error) bool {
	return err != nil && strings.Contains(err.Error(), "E11000")
}