rocket.json.client.BooleanJsonSerializer.java Source code

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Here is the source code for rocket.json.client.BooleanJsonSerializer.java

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/*
 * Copyright Miroslav Pokorny
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package rocket.json.client;

import com.google.gwt.json.client.JSONBoolean;
import com.google.gwt.json.client.JSONNull;
import com.google.gwt.json.client.JSONValue;

/**
 * Reads and writes boolean values.
 * 
 * @author Miroslav Pokorny
 * @author Vincente Ferrer
 */
public class BooleanJsonSerializer extends JsonSerializer {

    public final static BooleanJsonSerializer serializer = new BooleanJsonSerializer();

    private BooleanJsonSerializer() {
        super();
    }

    @Override
    public Object readObject(final JSONValue jsonValue) {
        return read(jsonValue) ? Boolean.TRUE : Boolean.FALSE;
    }

    @Override
    public JSONValue writeJson(final Object instance) {
        final Boolean wrapper = (Boolean) instance;
        return wrapper == null ? (JSONValue) JSONNull.getInstance()
                : JSONBoolean.getInstance(wrapper.booleanValue());
    }

    public boolean read(final JSONValue jsonValue) {
        boolean value = false;

        while (true) {
            if (null == jsonValue) {
                break;
            }
            final JSONBoolean jsonBoolean = jsonValue.isBoolean();
            if (null == jsonBoolean) {
                break;
            }

            value = jsonBoolean.booleanValue();
            break;
        }

        return value;
    }

    public JSONValue writeJson(final boolean booleanValue) {
        return JSONBoolean.getInstance(booleanValue);
    }
}