/*
* Copyright (c) 2010-2014. Axon Framework
*
* Licensed 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.axonframework.serializer.json;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.axonframework.serializer.AbstractContentTypeConverter;
import org.axonframework.serializer.CannotConvertBetweenTypesException;
/**
* ContentTypeConverter implementation that converts a JsonNode object into a byte[]. The byte[] will contain the UTF8
* encoded JSON string.
*
* @author Allard Buijze
* @since 2.2
*/
public class JsonNodeToByteArrayConverter extends AbstractContentTypeConverter<JsonNode, byte[]> {
private final ObjectMapper objectMapper;
/**
* Initialize the converter, using given <code>objectMapper</code> to convert the JSonNode into bytes. Typically,
* this would be the objectMapper used by the Serializer that serializes objects into JsonNode.
*
* @param objectMapper The objectMapper to serialize the JsonNode with.
*/
public JsonNodeToByteArrayConverter(ObjectMapper objectMapper) {
this.objectMapper = objectMapper;
}
@Override
public Class<JsonNode> expectedSourceType() {
return JsonNode.class;
}
@Override
public Class<byte[]> targetType() {
return byte[].class;
}
@Override
public byte[] convert(JsonNode original) {
try {
return objectMapper.writeValueAsBytes(original);
} catch (JsonProcessingException e) {
throw new CannotConvertBetweenTypesException("An error occurred while converting a JsonNode to byte[]", e);
}
}
}