| /* |
| 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.edgent.connectors.file.runtime; |
| |
| import java.io.BufferedWriter; |
| import java.io.IOException; |
| import java.nio.charset.Charset; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| |
| import org.slf4j.Logger; |
| |
| class StringWriterFile extends AbstractWriterFile<String> { |
| private static Logger trace = FileConnector.getTrace(); |
| private BufferedWriter bw; |
| private final Charset cs; |
| |
| public StringWriterFile(Path path, Charset cs) { |
| super(path); |
| this.cs = cs; |
| } |
| |
| @Override |
| protected int writeTuple(String tuple) throws IOException { |
| if (bw == null) { |
| trace.info("creating file {}", path()); |
| bw = Files.newBufferedWriter(path(), cs); |
| } |
| bw.write(tuple); |
| bw.write("\n"); |
| // ugh. inefficient |
| int nbytes = tuple.getBytes(cs).length; |
| nbytes++; |
| return nbytes; |
| } |
| |
| @Override |
| public void flush() throws IOException { |
| if (bw != null) { |
| trace.trace("flushing {}", path()); |
| bw.flush(); |
| } |
| } |
| |
| @Override |
| public void close() throws IOException { |
| if (bw != null) { |
| trace.info("closing {}", path()); |
| BufferedWriter bw = this.bw; |
| this.bw = null; |
| bw.close(); |
| } |
| } |
| |
| } |