| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.jena.dboe.transaction; |
| |
| |
| public class ComponentIdRegistry { |
| // // Not stable across JVMs hence "local" |
| // private ComponentId localCid = ComponentId.create("Local", L.uuidAsBytes(UUID.randomUUID())); |
| // |
| // // No! byte[].equals is Object.equals |
| // |
| // // ComponentId equality is by bytes (not display label) |
| // // so this maps bytes to a better form. |
| // private Map<Holder, ComponentId> registry = new ConcurrentHashMap<>(); |
| // |
| // public ComponentIdRegistry() { } |
| // |
| // public ComponentId registerLocal(String label, int index) { |
| // return register(localCid, label, index); |
| // } |
| // |
| // public ComponentId register(ComponentId base, String label, int index) { |
| // byte[] bytes = base.bytes(); |
| // bytes = Arrays.copyOf(bytes, bytes.length); |
| // int x = Bytes.getInt(bytes, bytes.length - SystemBase.SizeOfInt); |
| // x = x ^ index; |
| // Bytes.setInt(x, bytes, bytes.length-SystemBase.SizeOfInt); |
| // ComponentId cid = new ComponentId(label+"-"+index, bytes); |
| // Holder h = new Holder(bytes); |
| // registry.put(h, cid); |
| // return cid; |
| // } |
| // |
| // public ComponentId lookup(byte[] bytes) { |
| // Holder h = new Holder(bytes); |
| // return registry.get(h); |
| // } |
| // |
| // public void reset() { |
| // registry.clear(); |
| // } |
| // |
| // // Makes equality the value of the bytes. |
| // static class Holder { |
| // private final byte[] bytes; |
| // |
| // Holder(byte[] bytes) { this.bytes = bytes; } |
| // |
| // @Override |
| // public int hashCode() { |
| // final int prime = 31; |
| // int result = 1; |
| // result = prime * result + Arrays.hashCode(bytes); |
| // return result; |
| // } |
| // |
| // @Override |
| // public boolean equals(Object obj) { |
| // if ( this == obj ) |
| // return true; |
| // if ( obj == null ) |
| // return false; |
| // if ( getClass() != obj.getClass() ) |
| // return false; |
| // Holder other = (Holder)obj; |
| // if ( !Arrays.equals(bytes, other.bytes) ) |
| // return false; |
| // return true; |
| // } |
| // |
| // @Override |
| // public String toString() { |
| // return Bytes.asHex(bytes); |
| // } |
| // } |
| } |
