org.apache.camel.component.jacksonxml.converter.JacksonXMLTypeConverters Maven / Gradle / Ivy
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/*
* 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.jacksonxml.converter;
import java.util.Map;
import java.util.Set;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import org.apache.camel.Converter;
import org.apache.camel.Exchange;
import org.apache.camel.component.jacksonxml.JacksonXMLConstants;
import org.apache.camel.spi.Registry;
import org.apache.camel.spi.TypeConverterRegistry;
@Converter(generateLoader = true)
public final class JacksonXMLTypeConverters {
private final XmlMapper defaultMapper = new XmlMapper();
private boolean init;
private Boolean enabled;
public JacksonXMLTypeConverters() {
}
@Converter(fallback = true)
public T convertTo(Class type, Exchange exchange, Object value, TypeConverterRegistry registry) {
// only do this if enabled
if (!init && exchange != null) {
// init to see if this is enabled
String text = exchange.getContext().getGlobalOptions().get(JacksonXMLConstants.ENABLE_XML_TYPE_CONVERTER);
enabled = "true".equalsIgnoreCase(text);
init = true;
}
if (enabled == null || !enabled) {
return null;
}
if (isNotPojoType(type)) {
return null;
}
if (exchange != null && value instanceof Map) {
ObjectMapper mapper = resolveObjectMapper(exchange.getContext().getRegistry());
if (mapper.canSerialize(type)) {
return mapper.convertValue(value, type);
}
}
// Just return null to let other fallback converter to do the job
return null;
}
private static boolean isNotPojoType(Class type) {
boolean isString = String.class.isAssignableFrom(type);
boolean isNumber = Number.class.isAssignableFrom(type)
|| int.class.isAssignableFrom(type) || long.class.isAssignableFrom(type)
|| short.class.isAssignableFrom(type) || char.class.isAssignableFrom(type)
|| float.class.isAssignableFrom(type) || double.class.isAssignableFrom(type);
return isString || isNumber;
}
private ObjectMapper resolveObjectMapper(Registry registry) {
Set mappers = registry.findByType(XmlMapper.class);
if (mappers.size() == 1) {
return mappers.iterator().next();
}
return defaultMapper;
}
}