| /** |
| * 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.camel.dataformat.csv; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.util.Iterator; |
| import java.util.NoSuchElementException; |
| |
| import org.apache.camel.util.IOHelper; |
| import org.apache.commons.csv.CSVParser; |
| |
| /** |
| */ |
| public class CsvIterator<T> implements Iterator<T>, Closeable { |
| |
| private final CSVParser parser; |
| private final Reader reader; |
| private final CsvLineConverter<T> lineConverter; |
| private String[] line; |
| |
| public CsvIterator(CSVParser parser, Reader reader, CsvLineConverter<T> lineConverter) throws IOException { |
| this.parser = parser; |
| this.reader = reader; |
| this.lineConverter = lineConverter; |
| line = parser.getLine(); |
| } |
| |
| @Override |
| public boolean hasNext() { |
| return line != null; |
| } |
| |
| @Override |
| public T next() { |
| if (!hasNext()) { |
| throw new NoSuchElementException(); |
| } |
| T result = lineConverter.convertLine(line); |
| try { |
| line = parser.getLine(); |
| } catch (IOException e) { |
| line = null; |
| close(); |
| throw new IllegalStateException(e); |
| } |
| if (line == null) { |
| close(); |
| } |
| return result; |
| } |
| |
| @Override |
| public void remove() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public void close() { |
| IOHelper.close(reader); |
| } |
| } |