com.sun.jersey.atom.abdera.impl.provider.entity.EntryProvider Maven / Gradle / Ivy

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/*
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * 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 https://jersey.dev.java.net/CDDL+GPL.html
 * or jersey/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at jersey/legal/LICENSE.txt.
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 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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package com.sun.jersey.atom.abdera.impl.provider.entity;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import org.apache.abdera.Abdera;
import org.apache.abdera.model.Document;
import org.apache.abdera.model.Entry;
import org.apache.abdera.parser.Parser;

/**
 * JAX-RS Provider for an Atom {@link Entry} Document instance.
 */
//@Provider
@Consumes({"application/atom+xml", "application/xml", "text/xml", "application/atom+json", "application/json"})
@Produces({"application/atom+xml", "application/xml", "text/xml", "application/atom+json", "application/json"})
public class EntryProvider extends AbstractCompletableReaderWriter {

    public long getSize(Entry entry, Class type, Type genericType,
                        Annotation[] annotations, MediaType mediaType) {
        return -1;
    }

    public boolean isReadable(Class type, Type genericType,
                              Annotation[] annotations, MediaType mediaType) {
        return Entry.class.isAssignableFrom(type);
    }

    public boolean isWriteable(Class type, Type genericType,
                               Annotation[] annotations, MediaType mediaType) {
        return Entry.class.isAssignableFrom(type);
    }

    public Entry readFrom(Class type, Type genericType,
                          Annotation[] annotations, MediaType mediaType,
                          MultivaluedMap headers,
                          InputStream stream) throws IOException, WebApplicationException {
        Parser parser = null;
        if (mediaType.equals(MediaType.APPLICATION_JSON_TYPE) || mediaType.getSubtype().endsWith("+json")) {
            parser = Abdera.getInstance().getParserFactory().getParser("json");
        } else {
            parser = Abdera.getInstance().getParser();
        }
        Document document = parser.parse(stream);
        return document.getRoot();
    }

    public void writeTo(Entry entry, Class type, Type genericType,
                        Annotation[] annotations, MediaType mediaType,
                        MultivaluedMap headers,
                        OutputStream stream) throws IOException, WebApplicationException {
        if (mediaType.equals(MediaType.APPLICATION_JSON_TYPE) || mediaType.getSubtype().endsWith("+json")) {
            entry.writeTo("json", stream);
        } else {
            entry.writeTo(stream);
        }
    }

}