content: // ===============================================================================
  // Authors: AFRL/RQQD
  // Organization: Air Force Research Laboratory, Aerospace Systems Directorate, Power and Control Division
  // 
  // Copyright (c) 2017 Government of the United State of America, as represented by
  // the Secretary of the Air Force.  No copyright is claimed in the United States under
  // Title 17, U.S. Code.  All Other Rights Reserved.
  // ===============================================================================
  
  /*
   * GRAL: GRAphing Library for Java(R)
   *
   * (C) Copyright 2009-2013 Erich Seifert <dev[at]erichseifert.de>,
   * Michael Seifert <mseifert[at]error-reports.org>
   *
   * This file is part of GRAL.
   *
   * GRAL 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 3 of the License, or
   * (at your option) any later version.
   *
   * GRAL 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 GRAL.  If not, see <http://www.gnu.org/licenses/>.
   */
  package de.erichseifert.gral.io.data;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import de.erichseifert.gral.io.IOCapabilitiesStorage;
  
  /**
   * Base implementation for classes that read data sources from input streams.
   */
  public abstract class AbstractDataReader extends IOCapabilitiesStorage
  		implements DataReader {
  	/** Settings stored as (key, value) pairs. */
  	private final Map<String, Object> settings;
  	/** Default settings. */
  	private final Map<String, Object> defaults;
  	/** Data format as MIME type string. */
  	private final String mimeType;
  
  	/**
  	 * Initializes a new reader with MIME type information.
  	 * @param mimeType MIME type
  	 */
  	public AbstractDataReader(String mimeType) {
  		settings = new HashMap<String, Object>();
  		defaults = new HashMap<String, Object>();
  		this.mimeType = mimeType;
  	}
  
  	/**
  	 * Returns the MIME type.
  	 * @return MIME type string.
  	 */
  	public String getMimeType() {
  		return mimeType;
  	}
  
  	/**
  	 * Returns the setting for the specified key.
  	 * @param <T> return type
  	 * @param key key of the setting
  	 * @return the value of the setting
  	 */
  	@SuppressWarnings("unchecked")
  	public <T> T getSetting(String key) {
  		if (!settings.containsKey(key)) {
  			return (T) defaults.get(key);
  		}
  		return (T) settings.get(key);
  	}
  
  	/**
  	 * Sets the setting for the specified key.
  	 * @param <T> value type
  	 * @param key key of the setting
  	 * @param value value of the setting
  	 */
  	public <T> void setSetting(String key, T value) {
  		settings.put(key, value);
  	}
  
  	/**
  	 * Defines a default value for the setting with the specified key.
  	 * @param <T> Data type of value.
  	 * @param key Setting key.
  	 * @param value Default value.
  	 */
  	protected <T> void setDefault(String key, T value) {
  		defaults.put(key, value);
  	}
  
  }
  