com.sun.jersey.server.impl.model.parameter.multivalued.JAXBStringReaderProviders Maven / Gradle / Ivy

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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
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 * file and include the License file at packager/legal/LICENSE.txt.
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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;
import java.security.AccessController;
import java.security.PrivilegedAction;

/**
 *
 * @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() {
                @Override
                public Object fromString(final String value) {
                    return AccessController.doPrivileged(new PrivilegedAction