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/**
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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*
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* Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.
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*
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* Oracle and Java are registered trademarks of Oracle and/or its affiliates.
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* Other names may be trademarks of their respective owners.
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*
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* The contents of this file are subject to the terms of either the GNU
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* General Public License Version 2 only ("GPL") or the Common
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* Development and Distribution License("CDDL") (collectively, the
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* "License"). You may not use this file except in compliance with the
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* License. You can obtain a copy of the License at
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* http://www.netbeans.org/cddl-gplv2.html
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* or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
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* specific language governing permissions and limitations under the
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* License. When distributing the software, include this License Header
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* Notice in each file and include the License file at
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* nbbuild/licenses/CDDL-GPL-2-CP. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the GPL Version 2 section of the License file that
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* accompanied this code. If applicable, add the following below the
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* License Header, with the fields enclosed by brackets [] replaced by
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* your own identifying information:
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* "Portions Copyrighted [year] [name of copyright owner]"
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*
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* Contributor(s):
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*
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* The Original Software is NetBeans. The Initial Developer of the Original
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* Software is Oracle. Portions Copyright 2013-2014 Oracle. All Rights Reserved.
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*
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* If you wish your version of this file to be governed by only the CDDL
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* or only the GPL Version 2, indicate your decision by adding
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* "[Contributor] elects to include this software in this distribution
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* under the [CDDL or GPL Version 2] license." If you do not indicate a
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* single choice of license, a recipient has the option to distribute
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* your version of this file under either the CDDL, the GPL Version 2 or
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* to extend the choice of license to its licensees as provided above.
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* However, if you add GPL Version 2 code and therefore, elected the GPL
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* Version 2 license, then the option applies only if the new code is
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* made subject to such option by the copyright holder.
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*/
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package org.netbeans.html.json.spi;
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import java.io.IOException;
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import java.io.InputStream;
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import org.netbeans.html.context.spi.Contexts.Builder;
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/** A {@link Builder service provider interface} responsible for
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* conversion of JSON objects to Java ones and vice-versa.
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*
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* @author Jaroslav Tulach
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*/
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public interface Transfer {
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/**
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* Called to inspect properties of an object (usually a JSON or JavaScript
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* wrapper).
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*
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* @param obj the object to inspect
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* @param props the names of properties to check on the object
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* <code>obj</code>
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* @param values array of the same length as <code>props</code> should be
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* filled by values of properties on the <code>obj</code>. If a property is
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* not defined, a <code>null</code> value should be stored in the array
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*/
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public void extract(Object obj, String[] props, Object[] values);
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/** Reads content of a stream and creates its JSON representation.
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* The returned object is implementation dependant. It however needs
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* to be acceptable as first argument of {@link #extract(java.lang.Object, java.lang.String[], java.lang.Object[]) extract}
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* method. If the stream contains representation or a JSON array,
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* an Object[] should be returned - each of its members should, by itself
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* be acceptable argument to
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* the {@link #extract(java.lang.Object, java.lang.String[], java.lang.Object[]) extract} method.
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*
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* @param is input stream to read data from
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* @return an object representing the JSON data
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* @throws IOException if something goes wrong
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*/
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public Object toJSON(InputStream is) throws IOException;
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/** Starts the JSON or JSONP query.
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*
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* @param call description of the call to make
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*/
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public void loadJSON(JSONCall call);
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}
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