| /* |
| * 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.nifi.json; |
| |
| import org.apache.nifi.schema.inference.RecordSource; |
| import org.codehaus.jackson.JsonFactory; |
| import org.codehaus.jackson.JsonNode; |
| import org.codehaus.jackson.JsonParser; |
| import org.codehaus.jackson.JsonToken; |
| import org.codehaus.jackson.map.ObjectMapper; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| public class JsonRecordSource implements RecordSource<JsonNode> { |
| private static final JsonFactory jsonFactory; |
| private final JsonParser jsonParser; |
| |
| static { |
| jsonFactory = new JsonFactory(); |
| jsonFactory.setCodec(new ObjectMapper()); |
| } |
| |
| public JsonRecordSource(final InputStream in) throws IOException { |
| jsonParser = jsonFactory.createJsonParser(in); |
| } |
| |
| @Override |
| public JsonNode next() throws IOException { |
| while (true) { |
| final JsonToken token = jsonParser.nextToken(); |
| if (token == null) { |
| return null; |
| } |
| |
| if (token == JsonToken.START_OBJECT) { |
| return jsonParser.readValueAsTree(); |
| } |
| } |
| } |
| } |