/**

  * SQL-DK

  * Copyright © 2013 František Kučera (frantovo.cz)

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License, or

  * (at your option) any later version.

  *

  * This program 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 General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. If not, see <http://www.gnu.org/licenses/>.

  */

 package info.globalcode.sql.dk.configuration;

 import java.util.ArrayList;

 import javax.xml.bind.annotation.XmlTransient;

 import static info.globalcode.sql.dk.Functions.findByName;

 import java.util.Collections;

 /**

  * <p>

  * List of configurables.</p>

  *

  * <p>

  * Can be backed by defaults – if value for given name is nof found in this instance, we will

  * look into defaults. Methods also accept defaultValue parameter – is used if property is nof found

  * even in default properties.</p>

  *

  * <p>

  * Typical use: </p>

  * <ul>

  * <li>this instance – ad-hoc properties from CLI options</li>

  * <li>default properties – from config file</li>

  * <li>defaultValue – hardcoded default</li>

  * </ul>

  *

  * @author Ing. František Kučera (frantovo.cz)

  */

 public class Properties extends ArrayList<Property> implements Cloneable {

 	private Properties defaults;

 	public Properties() {

 	}

 	public Properties(int initialCapacity) {

 		super(initialCapacity);

 	}

 	@XmlTransient

 	public Properties getDefaults() {

 		return defaults;

 	}

 	public void setDefaults(Properties defaults) {

 		this.defaults = defaults;

 	}

 	/**

 	 * @param defaults the last/deepest defaults

 	 */

 	public void setLastDefaults(Properties defaults) {

 		if (this.defaults == null) {

 			this.defaults = defaults;

 		} else {

 			this.defaults.setLastDefaults(defaults);

 		}

 	}

 	private Property findProperty(String name) {

 		Property p = findByName(this, name);

 		if (p == null && defaults != null) {

 			p = defaults.findProperty(name);

 		}

 		return p;

 	}

 	public String getString(String name, String defaultValue) {

 		Property p = findProperty(name);

 		return p == null ? defaultValue : p.getValue();

 	}

 	public boolean getBoolean(String name, boolean defaultValue) {

 		Property p = findProperty(name);

 		return p == null ? defaultValue : Boolean.valueOf(p.getValue());

 	}

 	public int getInteger(String name, int defaultValue) {

 		Property p = findProperty(name);

 		return p == null ? defaultValue : Integer.valueOf(p.getValue());

 	}

 	public boolean hasProperty(String name) {

 		return findByName(this, name) != null;

 	}

 	@Override

 	public Properties clone() {

 		Properties clone = new Properties(size());

 		Collections.copy(clone, this);

 		return clone;

 	}

 	/**

 	 * @return merged this and backing defaults as Java Properties

 	 */

 	public java.util.Properties getJavaProperties() {

 		java.util.Properties javaProperties = new java.util.Properties();

 		duplicateTo(javaProperties);

 		return javaProperties;

 	}

 	private void duplicateTo(java.util.Properties javaProperties) {

 		if (defaults != null) {

 			defaults.duplicateTo(javaProperties);

 		}

 		for (Property p : this) {

 			String value = p.getValue();

 			if (value != null) {

 				javaProperties.setProperty(p.getName(), value);

 			}

 		}

 	}

 }