| package org.apache.lucene.store; |
| |
| /* |
| * 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 java.io.Closeable; |
| import java.io.IOException; |
| |
| /** Abstract base class for output to a file in a Directory. A random-access |
| * output stream. Used for all Lucene index output operations. |
| |
| * <p>{@code IndexOutput} may only be used from one thread, because it is not |
| * thread safe (it keeps internal state like file position). |
| |
| * @see Directory |
| * @see IndexInput |
| */ |
| public abstract class IndexOutput extends DataOutput implements Closeable { |
| |
| /** Closes this stream to further operations. */ |
| @Override |
| public abstract void close() throws IOException; |
| |
| /** Returns the current position in this file, where the next write will |
| * occur. |
| */ |
| public abstract long getFilePointer(); |
| |
| /** Returns the current checksum of bytes written so far */ |
| public abstract long getChecksum() throws IOException; |
| } |