org.komodo.rest.relational.json.StatusObjectSerializer.java Source code

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Here is the source code for org.komodo.rest.relational.json.StatusObjectSerializer.java

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/*
 * JBoss, Home of Professional Open Source.
 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */
package org.komodo.rest.relational.json;

import static org.komodo.rest.Messages.Error.UNEXPECTED_JSON_TOKEN;
import static org.komodo.rest.relational.json.KomodoJsonMarshaller.BUILDER;
import java.io.IOException;
import java.lang.reflect.Type;
import java.util.Map;
import org.komodo.rest.Messages;
import org.komodo.rest.relational.response.KomodoStatusObject;
import com.google.gson.TypeAdapter;
import com.google.gson.reflect.TypeToken;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;

/**
 * A GSON serializer/deserializer for {@status KomodoStatusObject}s.
 */
public final class StatusObjectSerializer extends TypeAdapter<KomodoStatusObject> {

    private static final Type STRING_MAP_TYPE = new TypeToken<Map<String, String>>() {
        /* nothing to do */}.getType();

    /**
     * {@inheritDoc}
     *
     * @see com.google.gson.TypeAdapter#read(com.google.gson.stream.JsonReader)
     */
    @Override
    public KomodoStatusObject read(final JsonReader in) throws IOException {
        final KomodoStatusObject status = new KomodoStatusObject();
        in.beginObject();

        while (in.hasNext()) {
            final String name = in.nextName();

            switch (name) {
            case KomodoStatusObject.TITLE_LABEL:
                status.setTitle(in.nextString());
                break;
            case KomodoStatusObject.INFO_LABEL:
                Map<String, String> attributes = BUILDER.fromJson(in, Map.class);
                status.setAttributes(attributes);
                break;
            default:
                throw new IOException(Messages.getString(UNEXPECTED_JSON_TOKEN, name));
            }
        }

        in.endObject();

        return status;
    }

    /**
     * {@inheritDoc}
     *
     * @see com.google.gson.TypeAdapter#write(com.google.gson.stream.JsonWriter, java.lang.Object)
     */
    @Override
    public void write(final JsonWriter out, final KomodoStatusObject value) throws IOException {

        out.beginObject();

        // Title of object
        out.name(KomodoStatusObject.TITLE_LABEL);
        out.value(value.getTitle());

        out.name(KomodoStatusObject.INFO_LABEL);
        BUILDER.toJson(value.getAttributes(), STRING_MAP_TYPE, out);

        out.endObject();
    }

}