| /* |
| * 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.carbondata.core.writer; |
| |
| import java.io.BufferedWriter; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStreamWriter; |
| |
| import org.apache.carbondata.common.logging.LogServiceFactory; |
| import org.apache.carbondata.core.constants.CarbonCommonConstants; |
| import org.apache.carbondata.core.datastore.impl.FileFactory; |
| import org.apache.carbondata.core.mutate.DeleteDeltaBlockDetails; |
| |
| import com.google.gson.Gson; |
| import org.apache.log4j.Logger; |
| |
| /** |
| * This class is responsible for writing the delete delta file |
| */ |
| public class CarbonDeleteDeltaWriterImpl implements CarbonDeleteDeltaWriter { |
| |
| /** |
| * LOGGER |
| */ |
| private static final Logger LOGGER = |
| LogServiceFactory.getLogService(CarbonDeleteDeltaWriterImpl.class.getName()); |
| |
| private String filePath; |
| |
| private DataOutputStream dataOutStream = null; |
| |
| /** |
| * @param filePath |
| */ |
| public CarbonDeleteDeltaWriterImpl(String filePath) { |
| this.filePath = filePath; |
| |
| } |
| |
| /** |
| * This method will write the deleted records data in the json format. |
| * @param deleteDeltaBlockDetails |
| * @throws IOException |
| */ |
| @Override |
| public void write(DeleteDeltaBlockDetails deleteDeltaBlockDetails) throws IOException { |
| BufferedWriter brWriter = null; |
| try { |
| FileFactory.createNewFile(filePath); |
| dataOutStream = FileFactory.getDataOutputStream(filePath); |
| Gson gsonObjectToWrite = new Gson(); |
| brWriter = new BufferedWriter(new OutputStreamWriter(dataOutStream, |
| CarbonCommonConstants.DEFAULT_CHARSET)); |
| String deletedData = gsonObjectToWrite.toJson(deleteDeltaBlockDetails); |
| brWriter.write(deletedData); |
| } catch (IOException ioe) { |
| LOGGER.error("Error message: " + ioe.getLocalizedMessage()); |
| throw ioe; |
| } finally { |
| if (null != brWriter) { |
| brWriter.flush(); |
| } |
| if (null != dataOutStream) { |
| dataOutStream.flush(); |
| } |
| if (null != brWriter) { |
| brWriter.close(); |
| } |
| } |
| |
| } |
| } |