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package com.sun.jersey.json.impl.provider.entity;
import com.sun.jersey.api.json.JSONConfigurated;
import com.sun.jersey.api.json.JSONConfiguration;
import com.sun.jersey.core.provider.jaxb.AbstractListElementProvider;
import com.sun.jersey.core.util.FeaturesAndProperties;
import com.sun.jersey.json.impl.JSONHelper;
import com.sun.jersey.json.impl.Stax2JsonFactory;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.nio.charset.Charset;
import java.util.Collection;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.Providers;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
/**
*
* @author Jakub.Podlesak@Sun.COM
*/
public class JSONListElementProvider extends AbstractListElementProvider {
boolean jacksonEntityProviderTakesPrecedence = false;
JSONListElementProvider(Providers ps) {
super(ps);
}
JSONListElementProvider(Providers ps, MediaType mt) {
super(ps, mt);
}
@Context @Override
public void setConfiguration(FeaturesAndProperties fp) {
super.setConfiguration(fp);
jacksonEntityProviderTakesPrecedence = fp.getFeature(JSONConfiguration.FEATURE_POJO_MAPPING);
}
@Override
public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return !jacksonEntityProviderTakesPrecedence && super.isReadable(type, genericType, annotations, mediaType);
}
@Override
public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return !jacksonEntityProviderTakesPrecedence && super.isWriteable(type, genericType, annotations, mediaType);
}
@Produces("application/json")
@Consumes("application/json")
public static final class App extends JSONListElementProvider {
public App(@Context Providers ps) { super(ps , MediaType.APPLICATION_JSON_TYPE); }
}
@Produces("*/*")
@Consumes("*/*")
public static final class General extends JSONListElementProvider {
public General(@Context Providers ps) { super(ps); }
@Override
protected boolean isSupported(MediaType m) {
return !jacksonEntityProviderTakesPrecedence && m.getSubtype().endsWith("+json");
}
}
@Override
public final void writeList(Class<?> elementType, Collection<?> t, MediaType mediaType, Charset c, Marshaller m, OutputStream entityStream) throws JAXBException, IOException {
final OutputStreamWriter osw = new OutputStreamWriter(entityStream, c);
JSONConfiguration origJsonConfig = JSONConfiguration.DEFAULT;
if (m instanceof JSONConfigurated) {
origJsonConfig = ((JSONConfigurated)m).getJSONConfiguration();
}
final JSONConfiguration unwrappingJsonConfig =
JSONConfiguration.createJSONConfigurationWithRootUnwrapping(origJsonConfig, true);
final XMLStreamWriter jxsw = Stax2JsonFactory.createWriter(osw, unwrappingJsonConfig, true);
final String invisibleRootName = getRootElementName(elementType);
final String elementName = getElementName(elementType);
try {
if (!origJsonConfig.isRootUnwrapping()) {
osw.append(String.format("{\"%s\":", elementName));
osw.flush();
}
jxsw.writeStartDocument();
jxsw.writeStartElement(invisibleRootName);
for (Object o : t) {
m.marshal(o, jxsw);
}
jxsw.writeEndElement();
jxsw.writeEndDocument();
jxsw.flush();
if (!origJsonConfig.isRootUnwrapping()) {
osw.append("}");
osw.flush();
}
} catch (XMLStreamException ex) {
Logger.getLogger(JSONListElementProvider.class.getName()).log(Level.SEVERE, null, ex);
throw new JAXBException(ex.getMessage(), ex);
}
}
@Override
protected final XMLStreamReader getXMLStreamReader(Class<?> elementType, MediaType mediaType, Unmarshaller u, InputStream entityStream) throws XMLStreamException {
JSONConfiguration c = JSONConfiguration.DEFAULT;
final Charset charset = getCharset(mediaType);
if (u instanceof JSONConfigurated) {
c = ((JSONConfigurated) u).getJSONConfiguration();
}
return Stax2JsonFactory.createReader(new InputStreamReader(entityStream, charset), c, JSONHelper.getRootElementName((Class)elementType), true);
}
}