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model.go
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model.go
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// Copyright (c) 2017 - The Event Horizon 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 todo
import (
"time"
eh "github.com/looplab/eventhorizon"
"github.com/looplab/eventhorizon/uuid"
)
// TodoItem represents each item that can be completed in the todo list.
type TodoItem struct {
ID int `json:"id" bson:"id"`
Description string `json:"desc" bson:"desc"`
Completed bool `json:"completed" bson:"completed"`
}
// TodoList is the read model for the todo list.
type TodoList struct {
ID uuid.UUID `json:"id" bson:"_id"`
Version int `json:"version" bson:"version"`
Items []*TodoItem `json:"items" bson:"items"`
CreatedAt time.Time `json:"created_at" bson:"created_at"`
UpdatedAt time.Time `json:"updated_at" bson:"updated_at"`
}
var _ = eh.Entity(&TodoList{})
var _ = eh.Versionable(&TodoList{})
// EntityID implements the EntityID method of the eventhorizon.Entity interface.
func (t *TodoList) EntityID() uuid.UUID {
return t.ID
}
// AggregateVersion implements the AggregateVersion method of the
// eventhorizon.Versionable interface.
func (t *TodoList) AggregateVersion() int {
return t.Version
}