TileDataMetadataImpl.java

/*
 * Copyright (c) 2014 Oculus Info Inc. http://www.oculusinfo.com/
 *
 * Released under the MIT License.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.oculusinfo.binning;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

/**
 * An implementation of just the metadata methods of TileData
 * @param <T>
 */
abstract public class TileDataMetadataImpl<T> implements TileData<T> {
	private static final long serialVersionUID = 97881051858565002L;



	private Map<String, String> _metaData;

    protected TileDataMetadataImpl () {
        _metaData = null;
    }


    /** {@inheritDoc} */
    @Override
    public Collection<String> getMetaDataProperties() {
        if (null == _metaData) return null;
        return _metaData.keySet();
    }

    /** {@inheritDoc} */
    @Override
    public String getMetaData(String property) {
        if (null != _metaData) return _metaData.get(property);
        return null;
    }

    /** {@inheritDoc} */
    @Override
    public void setMetaData(String property, Object value) {
        if (null == _metaData) {
            _metaData = new HashMap<>();
        }
        if (null == value) {
            _metaData.put(property, null);
        } else {
            _metaData.put(property, value.toString());
        }
    }
}