74 lines
1.7 KiB
Go
74 lines
1.7 KiB
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 memstore
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import (
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"github.com/google/cayley/graph"
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"github.com/google/cayley/graph/iterator"
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)
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type AllIterator struct {
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iterator.Int64
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qs *QuadStore
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}
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type (
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nodesAllIterator AllIterator
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quadsAllIterator AllIterator
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)
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func newNodesAllIterator(qs *QuadStore) *nodesAllIterator {
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var out nodesAllIterator
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out.Int64 = *iterator.NewInt64(1, qs.nextID-1)
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out.qs = qs
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return &out
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}
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// No subiterators.
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func (it *nodesAllIterator) SubIterators() []graph.Iterator {
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return nil
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}
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func (it *nodesAllIterator) Next() bool {
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if !it.Int64.Next() {
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return false
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}
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_, ok := it.qs.revIDMap[it.Int64.Result().(int64)]
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if !ok {
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return it.Next()
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}
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return true
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}
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func newQuadsAllIterator(qs *QuadStore) *quadsAllIterator {
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var out quadsAllIterator
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out.Int64 = *iterator.NewInt64(1, qs.nextQuadID-1)
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out.qs = qs
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return &out
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}
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func (it *quadsAllIterator) Next() bool {
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out := it.Int64.Next()
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if out {
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i64 := it.Int64.Result().(int64)
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if it.qs.log[i64].DeletedBy != 0 || it.qs.log[i64].Action == graph.Delete {
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return it.Next()
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}
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}
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return out
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}
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var _ graph.Nexter = &nodesAllIterator{}
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var _ graph.Nexter = &quadsAllIterator{}
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