/**

  * 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, version 3 of the License.

  *

  * 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 static info.globalcode.sql.dk.Xmlns.CONFIGURATION;

 import info.globalcode.sql.dk.formatting.Formatter;

 import info.globalcode.sql.dk.formatting.FormatterContext;

 import info.globalcode.sql.dk.formatting.FormatterException;

 import java.lang.reflect.Constructor;

 import java.lang.reflect.InvocationTargetException;

 import javax.xml.bind.annotation.XmlElement;

 /**

  * Configured (but not yet instantiated) formatter.

  *

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

  */

 public class FormatterDefinition implements NameIdentified {

 	private String name;

 	private String className;

 	private Properties properties = new Properties();

 	public FormatterDefinition() {

 	}

 	public FormatterDefinition(String name, String className) {

 		this.name = name;

 		this.className = className;

 	}

 	public FormatterDefinition(String name, String className, Properties properties) {

 		this(name, className);

 		this.properties = properties;

 	}

 	@XmlElement(name = "name", namespace = CONFIGURATION)

 	@Override

 	public String getName() {

 		return name;

 	}

 	public void setName(String name) {

 		this.name = name;

 	}

 	/**

 	 * Filter's class. Must implement the

 	 * <code>info.globalcode.sql.dk.formatting.Formatter</code> interface.

 	 * Subclassing the

 	 * <code>info.globalcode.sql.dk.formatting.AbstractFormatter</code> is strongly recommended.

 	 * The constructor must accept one parameter:

 	 * <code>info.globalcode.sql.dk.formatting.FormatterContext</code>

 	 *

 	 * @return fully qualified class name

 	 */

 	@XmlElement(name = "class", namespace = CONFIGURATION)

 	public String getClassName() {

 		return className;

 	}

 	public void setClassName(String className) {

 		this.className = className;

 	}

 	@XmlElement(name = "property", namespace = CONFIGURATION)

 	public Properties getProperties() {

 		return properties;

 	}

 	public void setProperties(Properties properties) {

 		this.properties = properties;

 	}

 	/**

 	 * @param context

 	 * @return

 	 * @throws FormatterException

 	 */

 	public Formatter getInstance(FormatterContext context) throws FormatterException {

 		context.getProperties().setDefaults(properties);

 		try {

 			Constructor constructor = Class.forName(className).getConstructor(context.getClass());

 			Object instance = constructor.newInstance(context);

 			if (instance instanceof Formatter) {

 				return (Formatter) instance;

 			} else {

 				throw new FormatterException("Formatter " + instance + " does not implement the " + Formatter.class.getName() + " interface");

 			}

 		} catch (ClassNotFoundException e) {

 			throw new FormatterException("Formatter class does not exist: " + className, e);

 		} catch (NoSuchMethodException e) {

 			throw new FormatterException("Formatter class with no valid constructor: " + className, e);

 		} catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {

 			throw new FormatterException("Formatter's constructor caused an error: " + className, e);

 		}

 	}

 }