/**
* 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.cxf.jaxrs.provider;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.ws.rs.ConsumeMime;
import javax.ws.rs.ProduceMime;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.Provider;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import org.apache.cxf.jaxrs.ext.MessageContext;
import org.apache.cxf.jaxrs.utils.schemas.SchemaHandler;
import org.codehaus.jettison.AbstractXMLStreamWriter;
import org.codehaus.jettison.mapped.Configuration;
import org.codehaus.jettison.mapped.MappedNamespaceConvention;
import org.codehaus.jettison.mapped.MappedXMLInputFactory;
import org.codehaus.jettison.mapped.MappedXMLStreamWriter;
@ProduceMime("application/json")
@ConsumeMime("application/json")
@Provider
public class JSONProvider extends AbstractJAXBProvider {
private static final String JAXB_DEFAULT_NAMESPACE = "##default";
private static final String JAXB_DEFAULT_NAME = "##default";
private Map<String, String> namespaceMap = new HashMap<String, String>();
private boolean serializeAsArray;
private List<String> arrayKeys;
@Context
public void setMessageContext(MessageContext mc) {
super.setContext(mc);
}
public void setConsumeMediaTypes(List<String> types) {
super.setConsumeMediaTypes(types);
}
public void setProduceMediaTypes(List<String> types) {
super.setProduceMediaTypes(types);
}
public void setSchemas(List<String> locations) {
super.setSchemaLocations(locations);
}
public void setSchemaHandler(SchemaHandler handler) {
super.setSchema(handler.getSchema());
}
public void setSerializeAsArray(boolean asArray) {
this.serializeAsArray = asArray;
}
public void setArrayKeys(List<String> keys) {
this.arrayKeys = keys;
}
public void setNamespaceMap(Map<String, String> namespaceMap) {
this.namespaceMap = namespaceMap;
}
public Object readFrom(Class<Object> type, Type genericType, Annotation[] anns, MediaType mt,
MultivaluedMap<String, String> headers, InputStream is)
throws IOException {
try {
Class<?> theType = getActualType(type, genericType);
Unmarshaller unmarshaller = createUnmarshaller(theType, genericType);
MappedXMLInputFactory factory = new MappedXMLInputFactory(namespaceMap);
XMLStreamReader xsw = factory.createXMLStreamReader(is);
Object response = null;
if (JAXBElement.class.isAssignableFrom(type)) {
response = unmarshaller.unmarshal(xsw, theType);
} else {
response = unmarshaller.unmarshal(xsw);
}
return response;
} catch (JAXBException e) {
handleJAXBException(e);
} catch (XMLStreamException e) {
throw new WebApplicationException(e);
} catch (WebApplicationException e) {
throw e;
} catch (Exception e) {
throw new WebApplicationException(e);
}
// unreachable
return null;
}
public void writeTo(Object obj, Class<?> cls, Type genericType, Annotation[] anns,
MediaType m, MultivaluedMap<String, Object> headers, OutputStream os)
throws IOException {
try {
Object actualObject = checkAdapter(obj, anns);
Class<?> actualClass = actualObject.getClass();
if (cls == genericType) {
genericType = actualClass;
}
Marshaller ms = createMarshaller(actualObject, actualClass, genericType, m);
Configuration c = new Configuration(namespaceMap);
MappedNamespaceConvention convention = new MappedNamespaceConvention(c);
AbstractXMLStreamWriter xsw = new MappedXMLStreamWriter(
convention,
new OutputStreamWriter(os, "UTF-8"));
if (serializeAsArray) {
if (arrayKeys != null) {
for (String key : arrayKeys) {
xsw.seriliazeAsArray(key);
}
} else {
String key = getKey(convention, cls);
xsw.seriliazeAsArray(key);
}
}
ms.marshal(actualObject, xsw);
xsw.close();
} catch (JAXBException e) {
throw new WebApplicationException(e);
} catch (XMLStreamException e) {
throw new WebApplicationException(e);
}
}
private String getKey(MappedNamespaceConvention convention, Class<?> cls) {
String key = null;
XmlRootElement root = cls.getAnnotation(XmlRootElement.class);
if (root != null) {
String namespace = root.namespace();
if (JAXB_DEFAULT_NAMESPACE.equals(namespace)) {
namespace = "";
}
String prefix = namespaceMap.get(namespace);
if (prefix == null) {
prefix = "";
}
String name = root.name();
if (JAXB_DEFAULT_NAME.equals(name)) {
name = cls.getSimpleName();
}
key = convention.createKey(prefix, namespace, name);
} else {
key = convention.createKey("", "", cls.getSimpleName());
}
return key;
}
}