| /* |
| * 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.iotdb.db.storageengine.dataregion.compaction.execute.utils.executor.readchunk.loader; |
| |
| import org.apache.iotdb.db.storageengine.dataregion.compaction.execute.utils.executor.ModifiedStatus; |
| import org.apache.iotdb.tsfile.compress.IUnCompressor; |
| import org.apache.iotdb.tsfile.exception.write.PageException; |
| import org.apache.iotdb.tsfile.file.header.PageHeader; |
| import org.apache.iotdb.tsfile.file.metadata.enums.CompressionType; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding; |
| import org.apache.iotdb.tsfile.read.common.TimeRange; |
| import org.apache.iotdb.tsfile.write.chunk.AlignedChunkWriterImpl; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.List; |
| |
| public class InstantPageLoader extends PageLoader { |
| |
| private ByteBuffer pageData; |
| |
| public InstantPageLoader() {} |
| |
| public InstantPageLoader( |
| PageHeader pageHeader, |
| ByteBuffer pageData, |
| CompressionType compressionType, |
| TSDataType dataType, |
| TSEncoding encoding, |
| List<TimeRange> deleteIntervalList, |
| ModifiedStatus modifiedStatus) { |
| super(pageHeader, compressionType, dataType, encoding, deleteIntervalList, modifiedStatus); |
| this.pageData = pageData; |
| } |
| |
| @Override |
| public ByteBuffer getCompressedData() { |
| return pageData; |
| } |
| |
| @Override |
| public ByteBuffer getUnCompressedData() throws IOException { |
| byte[] unCompressedData = new byte[pageHeader.getUncompressedSize()]; |
| IUnCompressor unCompressor = IUnCompressor.getUnCompressor(compressionType); |
| unCompressor.uncompress( |
| pageData.array(), 0, pageHeader.getCompressedSize(), unCompressedData, 0); |
| return ByteBuffer.wrap(unCompressedData); |
| } |
| |
| @Override |
| public void flushToTimeChunkWriter(AlignedChunkWriterImpl alignedChunkWriter) |
| throws PageException { |
| alignedChunkWriter.writePageHeaderAndDataIntoTimeBuff(pageData, pageHeader); |
| clear(); |
| } |
| |
| @Override |
| public void flushToValueChunkWriter( |
| AlignedChunkWriterImpl alignedChunkWriter, int valueColumnIndex) |
| throws IOException, PageException { |
| if (isEmpty()) { |
| alignedChunkWriter.getValueChunkWriterByIndex(valueColumnIndex).writeEmptyPageToPageBuffer(); |
| } else { |
| alignedChunkWriter |
| .getValueChunkWriterByIndex(valueColumnIndex) |
| .writePageHeaderAndDataIntoBuff(pageData, pageHeader); |
| clear(); |
| } |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return pageHeader == null |
| || pageData == null |
| || pageHeader.getUncompressedSize() == 0 |
| || this.modifiedStatus == ModifiedStatus.ALL_DELETED; |
| } |
| |
| @Override |
| public void clear() { |
| this.deleteIntervalList = null; |
| this.pageHeader = null; |
| this.pageData = null; |
| } |
| } |