/**
* 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.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.camel.Exchange;
import org.apache.camel.spi.DataFormat;
import org.apache.camel.util.ExchangeHelper;
import org.apache.commons.csv.CSVParser;
import org.apache.commons.csv.CSVStrategy;
import org.apache.commons.csv.writer.CSVConfig;
import org.apache.commons.csv.writer.CSVField;
import org.apache.commons.csv.writer.CSVWriter;
/**
* @version $Revision: 673468 $
*/
public class CsvDataFormat implements DataFormat {
private CSVStrategy strategy = CSVStrategy.DEFAULT_STRATEGY;
private CSVConfig config = new CSVConfig();
public void marshal(Exchange exchange, Object object, OutputStream outputStream) throws Exception {
Map map = ExchangeHelper.convertToMandatoryType(exchange, Map.class, object);
OutputStreamWriter out = new OutputStreamWriter(outputStream);
try {
CSVConfig conf = getConfig();
// lets add fields
Set set = map.keySet();
for (Object value : set) {
if (value != null) {
String text = value.toString();
CSVField field = new CSVField(text);
conf.addField(field);
}
}
CSVWriter writer = new CSVWriter(conf);
writer.setWriter(out);
writer.writeRecord(map);
} finally {
out.close();
}
}
public Object unmarshal(Exchange exchange, InputStream inputStream) throws Exception {
InputStreamReader in = new InputStreamReader(inputStream);
try {
CSVParser parser = new CSVParser(in, getStrategy());
List<List<String>> list = new ArrayList<List<String>>();
while (true) {
String[] strings = parser.getLine();
if (strings == null) {
break;
}
List<String> line = Arrays.asList(strings);
list.add(line);
}
if (list.size() == 1) {
return list.get(0);
} else {
return list;
}
} finally {
in.close();
}
}
public CSVConfig getConfig() {
if (config == null) {
config = createConfig();
}
return config;
}
public void setConfig(CSVConfig config) {
this.config = config;
}
public CSVStrategy getStrategy() {
return strategy;
}
public void setStrategy(CSVStrategy strategy) {
this.strategy = strategy;
}
protected CSVConfig createConfig() {
return new CSVConfig();
}
}