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package com.sun.jersey.json.impl.provider.entity;
import com.sun.jersey.api.json.JSONWithPadding;
import com.sun.jersey.core.provider.AbstractMessageReaderWriterProvider;
import com.sun.jersey.json.impl.ImplMessages;
import com.sun.jersey.spi.MessageBodyWorkers;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.logging.Logger;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.GenericEntity;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
/**
*
* @author [email protected], [email protected]
*/
public class JSONWithPaddingProvider extends AbstractMessageReaderWriterProvider {
private static final Logger LOGGER = Logger.getLogger(JSONWithPaddingProvider.class.getName());
private final Map> javascriptTypes;
@Context MessageBodyWorkers bodyWorker;
public JSONWithPaddingProvider() {
javascriptTypes = new HashMap>();
// application/javascript, application/x-javascript, text/ecmascript, application/ecmascript, text/jscript
javascriptTypes.put("application", new HashSet(Arrays.asList("x-javascript", "ecmascript", "javascript")));
javascriptTypes.put("text", new HashSet(Arrays.asList("ecmascript", "jscript")));
}
private boolean isJavascript(MediaType m) {
Set subtypes = javascriptTypes.get(m.getType());
if (subtypes == null) return false;
return subtypes.contains(m.getSubtype());
}
@Override
public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return false;
}
@Override
public JSONWithPadding readFrom(Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, InputStream entityStream) throws IOException, WebApplicationException {
throw new UnsupportedOperationException("Not supported by design.");
}
@Override
public boolean isWriteable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return type == JSONWithPadding.class;
}
@Override
public void writeTo(JSONWithPadding t, Class type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
Object jsonEntity = t.getJsonSource();
Type entityGenericType = jsonEntity.getClass();
Class entityType = jsonEntity.getClass();
final boolean genericEntityUsed = jsonEntity instanceof GenericEntity;
if (genericEntityUsed) {
GenericEntity ge = (GenericEntity)jsonEntity;
jsonEntity = ge.getEntity();
entityGenericType = ge.getType();
entityType = ge.getRawType();
}
final boolean isJavaScript = isJavascript(mediaType);
final MediaType workerMediaType = isJavaScript ? MediaType.APPLICATION_JSON_TYPE : mediaType;
MessageBodyWriter bw = bodyWorker.getMessageBodyWriter(entityType, entityGenericType, annotations, workerMediaType);
if (bw == null) {
if (!genericEntityUsed) {
LOGGER.severe(ImplMessages.ERROR_NONGE_JSONP_MSG_BODY_WRITER_NOT_FOUND(jsonEntity, workerMediaType));
} else {
LOGGER.severe(ImplMessages.ERROR_JSONP_MSG_BODY_WRITER_NOT_FOUND(jsonEntity, workerMediaType));
}
throw new WebApplicationException(500);
}
if (isJavaScript) {
entityStream.write(t.getCallbackName().getBytes());
entityStream.write('(');
}
bw.writeTo(jsonEntity, entityType, entityGenericType, annotations, workerMediaType, httpHeaders, entityStream);
if (isJavaScript) {
entityStream.write(')');
}
}
}