| /** |
| * 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.component.quickfixj.examples.transform; |
| |
| import java.util.Iterator; |
| |
| import quickfix.ConfigError; |
| import quickfix.DataDictionary; |
| import quickfix.Field; |
| import quickfix.FieldMap; |
| import quickfix.FieldNotFound; |
| import quickfix.FieldType; |
| import quickfix.Group; |
| import quickfix.Message; |
| import quickfix.MessageUtils; |
| import quickfix.Session; |
| import quickfix.SessionID; |
| |
| public class QuickfixjMessageJsonTransformer { |
| |
| public String transform(Message message) throws FieldNotFound, ConfigError { |
| SessionID sessionID = MessageUtils.getSessionID(message); |
| Session session = Session.lookupSession(sessionID); |
| DataDictionary dataDictionary = session.getDataDictionary(); |
| |
| if (dataDictionary == null) { |
| throw new IllegalStateException("No Data Dictionary. Exchange must reference an existing session"); |
| } |
| |
| return transform(message, dataDictionary); |
| } |
| |
| public String transform(Message message, DataDictionary dataDictionary) { |
| return transform(message, "", dataDictionary); |
| } |
| |
| public String transform(Message message, String indent, DataDictionary dd) { |
| StringBuilder sb = new StringBuilder(); |
| sb.append(indent).append("\"message\": "); |
| if (message == null) { |
| sb.append("null"); |
| } else { |
| sb.append("{\n"); |
| String contentIndent = indent + " "; |
| |
| transform("header", message.getHeader(), sb, contentIndent, dd); |
| sb.append("\n"); |
| |
| transform("body", message, sb, contentIndent, dd); |
| sb.append("\n"); |
| |
| transform("trailer", message.getTrailer(), sb, contentIndent, dd); |
| sb.append("\n"); |
| |
| sb.append(indent).append("}"); |
| } |
| return sb.toString(); |
| } |
| |
| private void transform(String name, FieldMap fieldMap, StringBuilder sb, String indent, DataDictionary dd) { |
| sb.append(indent).append("\"").append(name).append("\": {\n"); |
| int fieldCount = 0; |
| Iterator<Field<?>> fieldIterator = fieldMap.iterator(); |
| while (fieldIterator.hasNext()) { |
| if (fieldCount > 0) { |
| sb.append(",\n"); |
| } |
| Field<?> field = fieldIterator.next(); |
| sb.append(indent).append(" \"").append(dd.getFieldName(field.getField())).append("\": "); |
| if (dd.hasFieldValue(field.getField())) { |
| int tag = field.getField(); |
| sb.append("[ \"").append(field.getObject().toString()).append("\", \""). |
| append(dd.getValueName(tag, field.getObject().toString())). |
| append("\" ]"); |
| } else { |
| FieldType fieldType = dd.getFieldTypeEnum(field.getField()); |
| if (Number.class.isAssignableFrom(fieldType.getJavaType())) { |
| sb.append(field.getObject()); |
| } else { |
| sb.append("\"").append(field.getObject().toString()).append("\""); |
| } |
| } |
| fieldCount++; |
| } |
| |
| sb.append("\n"); |
| |
| Iterator<Integer> groupKeys = fieldMap.groupKeyIterator(); |
| while (groupKeys.hasNext()) { |
| int groupTag = groupKeys.next(); |
| for (Group group : fieldMap.getGroups(groupTag)) { |
| String groupName = dd.getFieldName(groupTag); |
| transform(groupName, group, sb, indent + " ", dd); |
| } |
| } |
| |
| sb.append(indent).append("}").append("\n"); |
| } |
| } |