28 lines
931 B
Go
28 lines
931 B
Go
// Copyright 2014 The Cayley Authors. All rights reserved.
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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 graph
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// Defines the PrimaryKey interface, this abstracts the generation of IDs
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type PrimaryKey interface {
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// Returns a new unique primary key
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Next() PrimaryKey
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// Get the integer format if possible, otherwise logs an error and returns -1
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Int() int64
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// Get the string format
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String() string
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}
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