| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * Licensed 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 from |
| * |
| * 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 edu.uci.ics.hyracks.dataflow.common.comm.io; |
| |
| import java.nio.ByteBuffer; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import edu.uci.ics.hyracks.data.std.util.ByteArrayAccessibleOutputStream; |
| import edu.uci.ics.hyracks.dataflow.common.comm.io.FrameTupleAppender; |
| |
| public class FrameOutputStream extends ByteArrayAccessibleOutputStream { |
| private static final Logger LOGGER = Logger.getLogger(FrameOutputStream.class.getName()); |
| |
| private final FrameTupleAppender frameTupleAppender; |
| |
| public FrameOutputStream(int frameSize) { |
| super(frameSize); |
| this.frameTupleAppender = new FrameTupleAppender(frameSize); |
| } |
| |
| public void reset(ByteBuffer buffer, boolean clear) { |
| if (clear) { |
| buffer.clear(); |
| } |
| frameTupleAppender.reset(buffer, clear); |
| } |
| |
| public int getTupleCount() { |
| int tupleCount = frameTupleAppender.getTupleCount(); |
| if (LOGGER.isLoggable(Level.FINEST)) { |
| LOGGER.finest("appendTuple(): tuple count: " + tupleCount); |
| } |
| return tupleCount; |
| } |
| |
| public boolean appendTuple() { |
| if (LOGGER.isLoggable(Level.FINEST)) { |
| LOGGER.finest("appendTuple(): tuple size: " + count); |
| } |
| boolean appended = frameTupleAppender.append(buf, 0, count); |
| count = 0; |
| return appended; |
| } |
| } |