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query.go
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query.go
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// Copyright 2023 Stichting ThingsIX Foundation
//
// 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.
//
// SPDX-License-Identifier: Apache-2.0
package clouddatastore
import (
"cloud.google.com/go/datastore"
)
func QueryBeginsWith(query *datastore.Query, field, beginsWith string) *datastore.Query {
start := beginsWith
endB := []byte(beginsWith)
endB[len(endB)-1] = endB[len(endB)-1] + 1
end := string(endB)
query = query.FilterField(field, ">=", start)
query = query.FilterField(field, "<", end)
return query
}