71 lines
1.7 KiB
Go
71 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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ts *TripleStore
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}
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type NodesAllIterator AllIterator
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type QuadsAllIterator AllIterator
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func NewMemstoreNodesAllIterator(ts *TripleStore) *NodesAllIterator {
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var out NodesAllIterator
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out.Int64 = *iterator.NewInt64(1, ts.idCounter-1)
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out.ts = ts
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return &out
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}
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// No subiterators.
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func (it *AllIterator) SubIterators() []graph.Iterator {
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return nil
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}
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func (nit *NodesAllIterator) Next() (graph.Value, bool) {
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next, out := nit.Int64.Next()
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if !out {
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return next, out
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}
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i64 := next.(int64)
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_, ok := nit.ts.revIdMap[i64]
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if !ok {
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return nit.Next()
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}
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return next, out
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}
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func NewMemstoreQuadsAllIterator(ts *TripleStore) *QuadsAllIterator {
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var out QuadsAllIterator
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out.Int64 = *iterator.NewInt64(1, ts.quadIdCounter-1)
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out.ts = ts
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return &out
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}
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func (qit *QuadsAllIterator) Next() (graph.Value, bool) {
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next, out := qit.Int64.Next()
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if out {
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i64 := next.(int64)
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if qit.ts.log[i64].DeletedBy != 0 || qit.ts.log[i64].Action == graph.Delete {
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return qit.Next()
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}
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}
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return next, out
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}
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