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package com.sun.jersey.core.provider.jaxb;
import com.sun.jersey.api.provider.jaxb.XmlHeader;
import com.sun.jersey.core.provider.AbstractMessageReaderWriterProvider;
import com.sun.jersey.core.util.FeaturesAndProperties;
import javax.xml.bind.PropertyException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
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.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.transform.sax.SAXSource;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.util.Map;
import java.util.WeakHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.xml.sax.InputSource;
/**
* A base class for implementing JAXB-based readers and writers.
*
* @author [email protected]
*/
public abstract class AbstractJAXBProvider extends AbstractMessageReaderWriterProvider {
private static final Map jaxbContexts =
new WeakHashMap();
private final Providers ps;
private final boolean fixedMediaType;
private final ContextResolver mtContext;
private final ContextResolver mtUnmarshaller;
private final ContextResolver mtMarshaller;
private boolean formattedOutput = false;
private boolean xmlRootElementProcessing = false;
public AbstractJAXBProvider(Providers ps) {
this(ps, null);
}
public AbstractJAXBProvider(Providers ps, MediaType mt) {
this.ps = ps;
fixedMediaType = mt != null;
if (fixedMediaType) {
this.mtContext = ps.getContextResolver(JAXBContext.class, mt);
this.mtUnmarshaller = ps.getContextResolver(Unmarshaller.class, mt);
this.mtMarshaller = ps.getContextResolver(Marshaller.class, mt);
} else {
this.mtContext = null;
this.mtUnmarshaller = null;
this.mtMarshaller = null;
}
}
@Context
public void setConfiguration(FeaturesAndProperties fp) {
formattedOutput = fp.getFeature(FeaturesAndProperties.FEATURE_FORMATTED);
xmlRootElementProcessing = fp.getFeature(FeaturesAndProperties.FEATURE_XMLROOTELEMENT_PROCESSING);
}
protected boolean isSupported(MediaType m) {
return true;
}
protected final Unmarshaller getUnmarshaller(Class type, MediaType mt) throws JAXBException {
if (fixedMediaType)
return getUnmarshaller(type);
final ContextResolver uncr = ps.getContextResolver(Unmarshaller.class, mt);
if (uncr != null) {
Unmarshaller u = uncr.getContext(type);
if (u != null) return u;
}
return getJAXBContext(type, mt).createUnmarshaller();
}
private Unmarshaller getUnmarshaller(Class type) throws JAXBException {
if (mtUnmarshaller != null) {
Unmarshaller u = mtUnmarshaller.getContext(type);
if (u != null) return u;
}
return getJAXBContext(type).createUnmarshaller();
}
protected final Marshaller getMarshaller(Class type, MediaType mt) throws JAXBException {
if (fixedMediaType)
return getMarshaller(type);
final ContextResolver mcr = ps.getContextResolver(Marshaller.class, mt);
if (mcr != null) {
Marshaller m = mcr.getContext(type);
if (m != null) return m;
}
Marshaller m = getJAXBContext(type, mt).createMarshaller();
if(formattedOutput)
m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, formattedOutput);
return m;
}
private Marshaller getMarshaller(Class type) throws JAXBException {
if (mtMarshaller != null) {
Marshaller u = mtMarshaller.getContext(type);
if (u != null) return u;
}
Marshaller m = getJAXBContext(type).createMarshaller();
if(formattedOutput)
m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, formattedOutput);
return m;
}
private JAXBContext getJAXBContext(Class type, MediaType mt) throws JAXBException {
final ContextResolver cr = ps.getContextResolver(JAXBContext.class, mt);
if (cr != null) {
JAXBContext c = cr.getContext(type);
if (c != null) return c;
}
return getStoredJAXBContext(type);
}
private JAXBContext getJAXBContext(Class type) throws JAXBException {
if (mtContext != null) {
JAXBContext c = mtContext.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;
}
}
protected static SAXSource getSAXSource(SAXParserFactory spf,
InputStream entityStream) throws JAXBException {
try {
return new SAXSource(
spf.newSAXParser().getXMLReader(),
new InputSource(entityStream));
} catch (Exception ex) {
throw new JAXBException("Error creating SAXSource", ex);
}
}
protected boolean isFormattedOutput() {
return formattedOutput;
}
protected boolean isXmlRootElementProcessing() {
return xmlRootElementProcessing;
}
protected void setHeader(Marshaller m, Annotation[] annotations) throws PropertyException {
for (Annotation a : annotations) {
if (a instanceof XmlHeader) {
try {
// standalone jaxb ri
m.setProperty("com.sun.xml.bind.xmlHeaders", ((XmlHeader) a).value());
} catch (PropertyException e) {
try {
// jaxb ri from jdk
m.setProperty("com.sun.xml.internal.bind.xmlHeaders", ((XmlHeader) a).value());
} catch (PropertyException ex) {
// other jaxb implementation
Logger.getLogger(AbstractJAXBProvider.class.getName()).log(
Level.WARNING, "@XmlHeader annotation is not supported with this JAXB implementation. Please use JAXB RI if you need this feature.");
}
}
break;
}
}
}
}