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/**
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* SQL-DK
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* Copyright © 2013 František Kučera (frantovo.cz)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package info.globalcode.sql.dk.configuration;
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import static info.globalcode.sql.dk.Xmlns.CONFIGURATION;
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import info.globalcode.sql.dk.formatting.Formatter;
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import info.globalcode.sql.dk.formatting.FormatterContext;
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import info.globalcode.sql.dk.formatting.FormatterException;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.InvocationTargetException;
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import javax.xml.bind.annotation.XmlElement;
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/**
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* Configured (but not yet instantiated) formatter.
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*
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* @author Ing. František Kučera (frantovo.cz)
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*/
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public class FormatterDefinition implements NameIdentified {
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private String name;
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private String className;
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private Properties properties = new Properties();
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public FormatterDefinition() {
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}
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public FormatterDefinition(String name, String className) {
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this.name = name;
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this.className = className;
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}
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public FormatterDefinition(String name, String className, Properties properties) {
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this(name, className);
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this.properties = properties;
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}
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@XmlElement(name = "name", namespace = CONFIGURATION)
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@Override
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public String getName() {
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return name;
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}
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public void setName(String name) {
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this.name = name;
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}
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/**
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* Filter's class. Must implement the
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* <code>info.globalcode.sql.dk.formatting.Formatter</code> interface.
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* Subclassing the
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* <code>info.globalcode.sql.dk.formatting.AbstractFormatter</code> is strongly recommended.
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* The constructor must accept one parameter:
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* <code>info.globalcode.sql.dk.formatting.FormatterContext</code>
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*
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* @return fully qualified class name
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*/
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@XmlElement(name = "class", namespace = CONFIGURATION)
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public String getClassName() {
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return className;
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}
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public void setClassName(String className) {
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this.className = className;
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}
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@XmlElement(name = "property", namespace = CONFIGURATION)
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public Properties getProperties() {
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return properties;
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}
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public void setProperties(Properties properties) {
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this.properties = properties;
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}
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/**
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* @param context
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* @return
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* @throws FormatterException
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*/
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public Formatter getInstance(FormatterContext context) throws FormatterException {
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context.getProperties().setDefaults(properties);
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try {
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Constructor constructor = Class.forName(className).getConstructor(context.getClass());
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Object instance = constructor.newInstance(context);
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if (instance instanceof Formatter) {
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return (Formatter) instance;
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} else {
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throw new FormatterException("Formatter " + instance + " does not implement the " + Formatter.class.getName() + " interface");
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}
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} catch (ClassNotFoundException e) {
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throw new FormatterException("Formatter class does not exist: " + className, e);
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} catch (NoSuchMethodException e) {
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throw new FormatterException("Formatter class with no valid constructor: " + className, e);
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} catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
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throw new FormatterException("Formatter's constructor caused an error: " + className, e);
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}
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}
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}
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