1 /**

     2  * SQL-DK

     3  * Copyright © 2013 František Kučera (frantovo.cz)

     4  *

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

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

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

     8  * (at your option) any later version.

     9  *

    10  * This program is distributed in the hope that it will be useful,

    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

    13  * GNU General Public License for more details.

    14  *

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

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

    17  */

    18 package info.globalcode.sql.dk.configuration;

    19 

    20 import static info.globalcode.sql.dk.Xmlns.CONFIGURATION;

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

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

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

    24 import java.lang.reflect.Constructor;

    25 import java.lang.reflect.InvocationTargetException;

    26 import javax.xml.bind.annotation.XmlElement;

    27 

    28 /**

    29  * Configured (but not yet instantiated) formatter.

    30  *

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

    32  */

    33 public class FormatterDefinition implements NameIdentified {

    34 

    35 	private String name;

    36 	private String className;

    37 	private Properties properties = new Properties();

    38 

    39 	public FormatterDefinition() {

    40 	}

    41 

    42 	public FormatterDefinition(String name, String className) {

    43 		this.name = name;

    44 		this.className = className;

    45 	}

    46 

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

    48 		this(name, className);

    49 		this.properties = properties;

    50 	}

    51 

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

    53 	@Override

    54 	public String getName() {

    55 		return name;

    56 	}

    57 

    58 	public void setName(String name) {

    59 		this.name = name;

    60 	}

    61 

    62 	/**

    63 	 * Filter's class. Must implement the

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

    65 	 * Subclassing the

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

    67 	 * The constructor must accept one parameter:

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

    69 	 *

    70 	 * @return fully qualified class name

    71 	 */

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

    73 	public String getClassName() {

    74 		return className;

    75 	}

    76 

    77 	public void setClassName(String className) {

    78 		this.className = className;

    79 	}

    80 

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

    82 	public Properties getProperties() {

    83 		return properties;

    84 	}

    85 

    86 	public void setProperties(Properties properties) {

    87 		this.properties = properties;

    88 	}

    89 

    90 	/**

    91 	 * @param context

    92 	 * @return

    93 	 * @throws FormatterException

    94 	 */

    95 	public Formatter getInstance(FormatterContext context) throws FormatterException {

    96 		context.getProperties().setDefaults(properties);

    97 		try {

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

    99 

   100 			Object instance = constructor.newInstance(context);

   101 			if (instance instanceof Formatter) {

   102 				return (Formatter) instance;

   103 			} else {

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

   105 			}

   106 		} catch (ClassNotFoundException e) {

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

   108 		} catch (NoSuchMethodException e) {

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

   110 		} catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {

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

   112 		}

   113 	}

   114 }