LogServiceImpl.java

/* 
 * (c) 2008- RANDI2 Core Development Team
 * 
 * This file is part of RANDI2.
 * 
 * RANDI2 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.
 * 
 * RANDI2 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
 * RANDI2. If not, see <http://www.gnu.org/licenses/>.
 */
package de.randi2.utility.logging;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import de.randi2.model.AbstractDomainObject;
import de.randi2.model.Trial;
import de.randi2.model.TrialSubject;

public class LogServiceImpl implements LogService {

	protected EntityManager entityManager;

	@PersistenceContext
	public void setEntityManager(EntityManager entityManager) {
		this.entityManager = entityManager;
	}

	@Override
	@Transactional(propagation = Propagation.REQUIRED)
	public void logChange(LogEntry.ActionType action, String username,
			AbstractDomainObject value) {
		LogEntry entry = new LogEntry();
		entry.setAction(action);
		entry.setUsername(username);
		entry.setClazz(value.getClass());
		entry.setIdentifier(value.getId());
		entry.setValue(value.toString());
		entry.setUiName(value.getUIName());
		entityManager.persist(entry);
	}

	@Override
	@Transactional(propagation = Propagation.REQUIRED)
	public void logSubjectAction(LogEntry.ActionType action, String username,
			Trial trial, TrialSubject trialSubject) {
		LogEntry entry = new LogEntry();
		entry.setAction(action);
		entry.setUsername(username);
		entry.setClazz(trial.getClass());
		entry.setIdentifier(trial.getId());
		entry.setValue(trialSubject.toString());
		entry.setUiName(trialSubject.getUIName());
		entityManager.persist(entry);

	}

	@Override
	@Transactional(propagation = Propagation.REQUIRED)
	public void logGet(LogEntry.ActionType action, String username) {
		LogEntry entry = new LogEntry();
		entry.setAction(action);
		entry.setUsername(username);
		entityManager.persist(entry);
	}

	@SuppressWarnings("unchecked")
	@Override
	@Transactional(propagation = Propagation.REQUIRED)
	public List<LogEntry> getLogEntries() {
		return entityManager.createQuery("from LogEntry").getResultList();
	}

	@SuppressWarnings("unchecked")
	@Override
	@Transactional(propagation = Propagation.REQUIRED)
	public List<LogEntry> getLogEntries(
			Class<? extends AbstractDomainObject> clazz, long id) {
		List<LogEntry> entries = entityManager
				.createQuery(
						"from LogEntry as entry where entry.clazz = ? and entry.identifier = ?")
				.setParameter(1, clazz).setParameter(2, id).getResultList();
		return entries;
	}

	@SuppressWarnings("unchecked")
	@Override
	@Transactional(propagation = Propagation.REQUIRED)
	public List<LogEntry> getLogEntries(String username) {
		List<LogEntry> entries = entityManager
				.createQuery("from LogEntry as entry where entry.username = ?")
				.setParameter(1, username).getResultList();
		return entries;
	}

	public static List<String> convert(List<LogEntry> entries) {
		List<String> strings = new ArrayList<String>();
		for (LogEntry entry : entries) {
			strings.add(entry.toString());
		}
		return strings;
	}

	@Override
	@Transactional(propagation = Propagation.REQUIRED)
	public void logTrialChange(LogEntry.ActionType action, String username,
			Trial oldTrial, Trial changedTrial) {
		LogEntry entry = new LogEntry();
		entry.setAction(action);
		entry.setUsername(username);
		entry.setClazz(Trial.class);
		entry.setIdentifier(changedTrial.getId());

		StringBuilder sb = new StringBuilder();
		if (!oldTrial.getName().equals(changedTrial.getName())) {
			sb.append("Name: ").append(oldTrial.getName()).append(" -> ")
					.append(changedTrial.getName()).append(" | ");
		}
		if (!oldTrial.getAbbreviation().equals(changedTrial.getAbbreviation())) {
			sb.append("Abbreviation: ").append(oldTrial.getAbbreviation())
					.append(" -> ").append(changedTrial.getAbbreviation())
					.append(" | ");
		}
		if (!oldTrial.getDescription().equals(changedTrial.getDescription())) {
			sb.append("Description: ").append(oldTrial.getDescription())
					.append(" -> ").append(changedTrial.getDescription())
					.append(" | ");
		}
		if (!oldTrial.getStartDate().equals(changedTrial.getStartDate())) {
			SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
			sb.append("Start-Date: ")
					.append(sdf.format(oldTrial.getStartDate().getTime()))
					.append(" -> ")
					.append(sdf.format(changedTrial.getStartDate().getTime()))
					.append(" | ");
		}
		if (!oldTrial.getEndDate().equals(changedTrial.getEndDate())) {
			SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
			sb.append("End-Date: ")
					.append(sdf.format(oldTrial.getEndDate().getTime()))
					.append(" -> ")
					.append(sdf.format(changedTrial.getEndDate().getTime()))
					.append(" | ");
		}
		if (!oldTrial.getLeadingSite().equals(changedTrial.getLeadingSite())) {
			sb.append("Leading Site: ")
					.append(oldTrial.getLeadingSite().getName()).append(" -> ")
					.append(changedTrial.getLeadingSite().getName())
					.append(" | ");
		}
		if (!oldTrial.getSponsorInvestigator().equals(
				changedTrial.getSponsorInvestigator())) {
			sb.append("Sponsor investigator: ")
					.append(oldTrial.getSponsorInvestigator().getUIName())
					.append(" -> ")
					.append(changedTrial.getSponsorInvestigator().getUIName())
					.append(" | ");
		}
		if (!(oldTrial.getStatus() == changedTrial.getStatus())) {
			sb.append("Status: ").append(oldTrial.getStatus()).append(" -> ")
					.append(changedTrial.getStatus());
		}
		if (sb.length() == 0) {
			sb.append(changedTrial.getAbbreviation());
		}
		entry.setUiName(sb.toString());
		entry.setValue(sb.toString());
		entityManager.persist(entry);
	}

}