| /* |
| * 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.solr.handler.dataimport; |
| |
| import static org.apache.solr.handler.dataimport.DataImportHandlerException.SEVERE; |
| import static org.apache.solr.handler.dataimport.DataImportHandlerException.wrapAndThrow; |
| import static org.apache.solr.handler.dataimport.XPathEntityProcessor.URL; |
| import org.apache.commons.io.IOUtils; |
| |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.io.StringWriter; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * <p>An implementation of {@link EntityProcessor} which reads data from a url/file and give out a row which contains one String |
| * value. The name of the field is 'plainText'. |
| * |
| * @since solr 1.4 |
| */ |
| public class PlainTextEntityProcessor extends EntityProcessorBase { |
| private boolean ended = false; |
| |
| @Override |
| public void init(Context context) { |
| super.init(context); |
| ended = false; |
| } |
| |
| @Override |
| public Map<String, Object> nextRow() { |
| if (ended) return null; |
| @SuppressWarnings({"unchecked"}) |
| DataSource<Reader> ds = context.getDataSource(); |
| String url = context.replaceTokens(context.getEntityAttribute(URL)); |
| Reader r = null; |
| try { |
| r = ds.getData(url); |
| } catch (Exception e) { |
| wrapAndThrow(SEVERE, e, "Exception reading url : " + url); |
| } |
| StringWriter sw = new StringWriter(); |
| char[] buf = new char[1024]; |
| while (true) { |
| int len = 0; |
| try { |
| len = r.read(buf); |
| } catch (IOException e) { |
| IOUtils.closeQuietly(r); |
| wrapAndThrow(SEVERE, e, "Exception reading url : " + url); |
| } |
| if (len <= 0) break; |
| sw.append(new String(buf, 0, len)); |
| } |
| Map<String, Object> row = new HashMap<>(); |
| row.put(PLAIN_TEXT, sw.toString()); |
| ended = true; |
| IOUtils.closeQuietly(r); |
| return row; |
| } |
| |
| public static final String PLAIN_TEXT = "plainText"; |
| } |