xhr4j/src/main/java/org/netbeans/html/xhr4j/XmlHttpResourceContext.java
author Jaroslav Tulach <jtulach@netbeans.org>
Mon, 29 Feb 2016 05:25:31 +0100
branchxhr4j
changeset 1057 b547f8f663f5
parent 886 ko-ws-tyrus/src/main/java/org/netbeans/html/wstyrus/TyrusContext.java@88d62267a0b5
permissions -rw-r--r--
#257849: xhr4j module uses java.net package to handle @OnReceive requests to workaround CORS limitations
     1 /**
     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
     3  *
     4  * Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.
     5  *
     6  * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
     7  * Other names may be trademarks of their respective owners.
     8  *
     9  * The contents of this file are subject to the terms of either the GNU
    10  * General Public License Version 2 only ("GPL") or the Common
    11  * Development and Distribution License("CDDL") (collectively, the
    12  * "License"). You may not use this file except in compliance with the
    13  * License. You can obtain a copy of the License at
    14  * http://www.netbeans.org/cddl-gplv2.html
    15  * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
    16  * specific language governing permissions and limitations under the
    17  * License.  When distributing the software, include this License Header
    18  * Notice in each file and include the License file at
    19  * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this
    20  * particular file as subject to the "Classpath" exception as provided
    21  * by Oracle in the GPL Version 2 section of the License file that
    22  * accompanied this code. If applicable, add the following below the
    23  * License Header, with the fields enclosed by brackets [] replaced by
    24  * your own identifying information:
    25  * "Portions Copyrighted [year] [name of copyright owner]"
    26  *
    27  * Contributor(s):
    28  *
    29  * The Original Software is NetBeans. The Initial Developer of the Original
    30  * Software is Oracle. Portions Copyright 2013-2014 Oracle. All Rights Reserved.
    31  *
    32  * If you wish your version of this file to be governed by only the CDDL
    33  * or only the GPL Version 2, indicate your decision by adding
    34  * "[Contributor] elects to include this software in this distribution
    35  * under the [CDDL or GPL Version 2] license." If you do not indicate a
    36  * single choice of license, a recipient has the option to distribute
    37  * your version of this file under either the CDDL, the GPL Version 2 or
    38  * to extend the choice of license to its licensees as provided above.
    39  * However, if you add GPL Version 2 code and therefore, elected the GPL
    40  * Version 2 license, then the option applies only if the new code is
    41  * made subject to such option by the copyright holder.
    42  */
    43 package org.netbeans.html.xhr4j;
    44 
    45 import java.io.IOException;
    46 import java.io.InputStream;
    47 import net.java.html.json.OnReceive;
    48 import org.netbeans.html.context.spi.Contexts;
    49 import org.netbeans.html.json.spi.JSONCall;
    50 import org.netbeans.html.json.spi.Transfer;
    51 import org.openide.util.lookup.ServiceProvider;
    52 
    53 /** Implementation module with support for XHR via Java.
    54  * Handles {@link OnReceive} requests by using Java to connect to given
    55  * URL and then parsing it via JavaScript. Use this module if you have
    56  * problems with CORS - as the Java connection isn't restricted by CORS
    57  * rules.
    58  * 
    59  * Registers {@link Transfer} technology at position <code>50</code>.
    60  * The {@link Contexts.Id} of the technology is <b>xhr4j</b>.
    61  * 
    62  * @author Jaroslav Tulach
    63  * @since 1.3
    64  */
    65 @Contexts.Id("xhr4j")
    66 @ServiceProvider(service = Contexts.Provider.class)
    67 public final class XmlHttpResourceContext
    68 implements Contexts.Provider, Transfer {
    69     @Override
    70     public void fillContext(Contexts.Builder context, Class<?> requestor) {
    71         context.register(Transfer.class, this, 50);
    72     }
    73 
    74     @Override
    75     public void extract(Object obj, String[] props, Object[] values) {
    76         LoadJSON.extractJSON(obj, props, values);
    77     }
    78 
    79     @Override
    80     public Object toJSON(InputStream is) throws IOException {
    81         return LoadJSON.parse(LoadJSON.readStream(is));
    82     }
    83 
    84     @Override
    85     public void loadJSON(JSONCall call) {
    86         LoadJSON.loadJSON(call);
    87     }
    88 }