| /* |
| * |
| * 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.crail.core; |
| |
| import java.io.IOException; |
| import java.util.concurrent.Future; |
| |
| import org.apache.crail.CrailBuffer; |
| import org.apache.crail.CrailResult; |
| |
| public class DirectoryOutputStream { |
| private CoreOutputStream stream; |
| private CrailBuffer internalBuf; |
| private CoreDataStore fs; |
| private boolean open; |
| |
| public DirectoryOutputStream(CoreOutputStream stream) |
| throws Exception { |
| this.fs = stream.getFile().getFileSystem(); |
| this.stream = stream; |
| this.internalBuf = fs.allocateBuffer(); |
| this.open = true; |
| } |
| |
| Future<CrailResult> writeRecord(DirectoryRecord record, long offset) throws Exception { |
| if (!open) { |
| throw new IOException("stream closed"); |
| } |
| |
| internalBuf.clear(); |
| record.write(internalBuf); |
| internalBuf.flip(); |
| stream.seek(offset); |
| Future<CrailResult> future = stream.write(internalBuf); |
| return future; |
| } |
| |
| public void close() throws IOException { |
| try { |
| if (!open){ |
| return; |
| } |
| |
| stream.close(); |
| fs.freeBuffer(internalBuf); |
| internalBuf = null; |
| open = false; |
| } catch (Exception e) { |
| throw new IOException(e); |
| } |
| } |
| |
| //debug |
| |
| public int getBufCapacity(){ |
| return internalBuf.capacity(); |
| } |
| |
| public int getBufPosition(){ |
| return internalBuf.position(); |
| } |
| |
| public int getBufLimit(){ |
| return internalBuf.limit(); |
| } |
| |
| } |