/*
* $Id: JsonCustomTransformer.java 20320 2010-11-24 15:03:31Z dfeist $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.module.json.transformers;
import org.mule.api.annotations.ContainsTransformerMethods;
import org.mule.api.annotations.Transformer;
import org.mule.api.annotations.param.InboundHeaders;
import org.mule.api.annotations.param.Payload;
import org.mule.json.model.EmailAddress;
import org.mule.json.model.Item;
import org.mule.json.model.Person;
import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.node.ArrayNode;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
@ContainsTransformerMethods
public class JsonCustomTransformer
{
//This is used to test other source types and injecting an ObjectMapper instance
@Transformer(sourceTypes = String.class)
public Person toCar(byte[] doc, ObjectMapper context) throws IOException
{
return context.readValue(doc, 0, doc.length, Person.class);
}
//NOTE the @MessagePayload annotation is ignored for transformer but we're just testing that that it doesn't break things
@Transformer
public EmailAddress toEmail(@Payload InputStream in, @InboundHeaders("*") Map headers, ObjectMapper mapper) throws IOException
{
Object foo = headers.get("foo");
if(foo==null || !"fooValue".equals(foo))
{
throw new IllegalArgumentException("Header foo not set to 'fooValue'");
}
return mapper.readValue(in, EmailAddress.class);
}
@Transformer(sourceTypes = {InputStream.class})
public List<Item> toItemList(@Payload String in, ObjectMapper mapper) throws IOException
{
List<Item> items = new ArrayList<Item>();
ArrayNode nodes = (ArrayNode) mapper.readTree(in);
for (Iterator<JsonNode> iterator = nodes.getElements(); iterator.hasNext();)
{
//TODO, we're reparsing content here
items.add(mapper.readValue(iterator.next().toString(), Item.class));
}
return items;
}
@Transformer(sourceTypes = {InputStream.class})
public List<Person> toPeople(@Payload String in, ObjectMapper mapper) throws IOException
{
List<Person> people = new ArrayList<Person>();
ArrayNode nodes = (ArrayNode) mapper.readTree(in);
for (Iterator<JsonNode> iterator = nodes.getElements(); iterator.hasNext();)
{
//TODO, we're reparsing content here
people.add(mapper.readValue(iterator.next().toString(), Person.class));
}
return people;
}
}