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package com.sun.jersey.server.impl.model.parameter.multivalued;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Map;
import java.util.WeakHashMap;
import javax.ws.rs.core.Context;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Providers;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.UnmarshalException;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.transform.sax.SAXSource;
import org.xml.sax.InputSource;
import com.sun.jersey.api.container.ContainerException;
import com.sun.jersey.impl.ImplMessages;
import com.sun.jersey.spi.StringReader;
import com.sun.jersey.spi.StringReaderProvider;
import com.sun.jersey.spi.inject.Injectable;
/**
*
* @author Paul Sandoz (paul.sandoz at oracle.com)
*/
public class JAXBStringReaderProviders {
private static final Map jaxbContexts =
new WeakHashMap();
private final ContextResolver context;
private final ContextResolver unmarshaller;
public JAXBStringReaderProviders(Providers ps) {
this.context = ps.getContextResolver(JAXBContext.class, null);
this.unmarshaller = ps.getContextResolver(Unmarshaller.class, null);
}
protected final Unmarshaller getUnmarshaller(Class type) throws JAXBException {
if (unmarshaller != null) {
Unmarshaller u = unmarshaller.getContext(type);
if (u != null) {
return u;
}
}
return getJAXBContext(type).createUnmarshaller();
}
private final JAXBContext getJAXBContext(Class type) throws JAXBException {
if (context != null) {
JAXBContext c = context.getContext(type);
if (c != null) {
return c;
}
}
return getStoredJAXBContext(type);
}
protected JAXBContext getStoredJAXBContext(Class type) throws JAXBException {
synchronized (jaxbContexts) {
JAXBContext c = jaxbContexts.get(type);
if (c == null) {
c = JAXBContext.newInstance(type);
jaxbContexts.put(type, c);
}
return c;
}
}
public static class RootElementProvider extends JAXBStringReaderProviders implements StringReaderProvider {
// Delay construction of factory
private final Injectable spf;
public RootElementProvider(@Context Injectable spf, @Context Providers ps) {
super(ps);
this.spf = spf;
}
public StringReader getStringReader(final Class type, Type genericType, Annotation[] annotations) {
final boolean supported = (type.getAnnotation(XmlRootElement.class) != null ||
type.getAnnotation(XmlType.class) != null);
if (!supported) {
return null;
}
return new StringReader() {
public Object fromString(String value) {
try {
final SAXSource source = new SAXSource(
spf.getValue().newSAXParser().getXMLReader(),
new InputSource(new java.io.StringReader(value)));
final Unmarshaller u = getUnmarshaller(type);
if (type.isAnnotationPresent(XmlRootElement.class)) {
return u.unmarshal(source);
} else {
return u.unmarshal(source, type).getValue();
}
} catch (UnmarshalException ex) {
throw new ExtractorContainerException(ImplMessages.ERROR_UNMARSHALLING_JAXB(type), ex);
} catch (JAXBException ex) {
throw new ContainerException(ImplMessages.ERROR_UNMARSHALLING_JAXB(type), ex);
} catch (Exception ex) {
throw new ContainerException(ImplMessages.ERROR_UNMARSHALLING_JAXB(type), ex);
}
}
};
}
}
}