cayley/graph/memstore/all_iterator.go
2014-07-02 12:13:15 +09:30

46 lines
1.2 KiB
Go

// Copyright 2014 The Cayley Authors. All rights reserved.
//
// 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 memstore
import (
"github.com/google/cayley/graph"
"github.com/google/cayley/graph/iterator"
)
type AllIterator struct {
iterator.Int64
ts *TripleStore
}
func NewMemstoreAllIterator(ts *TripleStore) *AllIterator {
var out AllIterator
out.Int64 = *iterator.NewInt64(1, ts.idCounter-1)
out.ts = ts
return &out
}
func (it *AllIterator) Next() (graph.Value, bool) {
next, out := it.Int64.Next()
if !out {
return next, out
}
i64 := next.(int64)
_, ok := it.ts.revIdMap[i64]
if !ok {
return it.Next()
}
it.Last = next
return next, out
}