| package org.apache.lucene.index; |
| |
| /* |
| * 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. |
| */ |
| |
| import org.apache.lucene.util.BytesRef; |
| |
| /** |
| * A per-document byte[] |
| */ |
| public abstract class BinaryDocValues { |
| |
| /** Sole constructor. (For invocation by subclass |
| * constructors, typically implicit.) */ |
| protected BinaryDocValues() {} |
| |
| /** Lookup the value for document. */ |
| public abstract void get(int docID, BytesRef result); |
| |
| /** |
| * Indicates the value was missing for the document. |
| */ |
| public static final byte[] MISSING = new byte[0]; |
| |
| /** An empty BinaryDocValues which returns {@link #MISSING} for every document */ |
| public static final BinaryDocValues EMPTY = new BinaryDocValues() { |
| @Override |
| public void get(int docID, BytesRef result) { |
| result.bytes = MISSING; |
| result.offset = 0; |
| result.length = 0; |
| } |
| }; |
| } |