/*
* Created on 18/apr/2010
*
* Copyright 2010 by Andrea Vacondio (andrea.vacondio@gmail.com).
*
* This file is part of the Sejda source code
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sejda.core.context;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import org.sejda.core.notification.strategy.NotificationStrategy;
import org.sejda.model.exception.TaskException;
import org.sejda.model.exception.TaskNotFoundException;
import org.sejda.model.parameter.base.TaskParameters;
import org.sejda.model.task.Task;
/**
* Default implementation of the {@link SejdaContext}. It loads Sejda configuration from the xml configuration file specified by the system property <b>sejda.config.file</b> or
* from the expected <b>sejda.xml</b> in the classpath.
*
* If no <b>sejda.xml</b> is found in the classpath a default configuration is loaded: <b>sejda.default.xml</b>
*
* @author Andrea Vacondio
*
*/
public class DefaultSejdaContext implements SejdaContext {
private static final String ERROR_INSTANTIATING_THE_TASK = "Error instantiating the task";
@Override
public final Class<? extends NotificationStrategy> getNotificationStrategy() {
return GlobalConfiguration.getInstance().getNotificationStrategy();
}
@Override
public boolean isValidation() {
return GlobalConfiguration.getInstance().isValidation();
}
public boolean isIgnoreXmlConfiguration() {
return GlobalConfiguration.getInstance().isIgnoreXmlConfiguration();
}
@Override
@SuppressWarnings({ "rawtypes", "unchecked" })
public Task<? extends TaskParameters> getTask(TaskParameters parameters) throws TaskException {
Class<? extends TaskParameters> parametersClass = parameters.getClass();
Class<? extends Task> taskClass = GlobalConfiguration.getInstance().getTasksRegistry().getTask(parametersClass);
if (taskClass == null) {
throw new TaskNotFoundException(
String.format("Unable to find a Task class able to execute %s", parametersClass));
}
try {
Constructor<? extends Task> constructor = taskClass.getConstructor();
return constructor.newInstance();
} catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException
| SecurityException e) {
throw new TaskException(ERROR_INSTANTIATING_THE_TASK, e);
} catch (NoSuchMethodException e) {
throw new TaskException(String.format("The task %s doesn't define a public no-args contructor.", taskClass),
e);
}
}
}