hs.hsadmin/hsarback/src/de/hsadmin/mods/db/PgSqlDatabaseModuleImpl.java

79 lines
2.9 KiB
Java

package de.hsadmin.mods.db;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import de.hsadmin.core.model.AbstractEntity;
import de.hsadmin.core.model.AbstractModuleImpl;
import de.hsadmin.core.model.AuthorisationException;
import de.hsadmin.core.model.HSAdminException;
import de.hsadmin.core.model.Transaction;
import de.hsadmin.mods.pac.Pac;
import de.hsadmin.mods.user.UnixUser;
public class PgSqlDatabaseModuleImpl extends AbstractModuleImpl {
@Override
public List<AbstractEntity> search(Class<? extends AbstractEntity> entityClass, String condition, String orderBy) throws HSAdminException {
if (orderBy == null || orderBy.length() == 0) {
orderBy = "ORDER BY obj.name ASC";
}
return super.search(entityClass, condition, orderBy);
}
@Override
public AbstractEntity add(AbstractEntity newEntity) throws HSAdminException {
UnixUser loginUser = getTransaction().getLoginUser();
PgSqlDatabase database = (PgSqlDatabase) newEntity;
String name = database.getName();
String pacPrefix = name.substring(0, 5);
if (name.length() < 7 || name.charAt(5) != '_') {
throw new AuthorisationException(loginUser, "add", newEntity);
}
String owner = database.getOwner();
if (owner == null || name.length() < 7 || name.charAt(5) != '_') {
if (name.length() != 5) {
throw new HSAdminException("database owner required");
}
}
if (!owner.startsWith(pacPrefix)) {
throw new HSAdminException("wrong database owner");
}
EntityManager em = getTransaction().getEntityManager();
Query qPac = em.createQuery("SELECT obj FROM Pacs obj WHERE obj.name = :pacName");
qPac.setParameter("pacName", name.substring(0, 5));
Object singleResult = qPac.getSingleResult();
Pac pac = (Pac) singleResult;
if (pac == null || !pac.isReadAllowedFor(loginUser)) {
throw new AuthorisationException(loginUser, "add", newEntity);
}
if (!pac.getName().equals(pacPrefix)) {
throw new HSAdminException("wrong database owner");
}
database.setPac(pac);
return super.add(newEntity);
}
@Override
public AbstractEntity update(AbstractEntity existingEntity) throws HSAdminException {
Transaction transaction = getTransaction();
EntityManager em = transaction.getEntityManager();
UnixUser unixUser = transaction.getLoginUser();
MySqlDatabase detachtedDB = (MySqlDatabase) existingEntity;
MySqlDatabase attachedDB = em.find(MySqlDatabase.class, detachtedDB.getId());
if (!attachedDB.getName().equals(detachtedDB.getName())) {
throw new AuthorisationException(unixUser, "update", existingEntity, "name");
}
if (!attachedDB.getEncoding().equals(detachtedDB.getEncoding())) {
throw new AuthorisationException(unixUser, "update", existingEntity, "encoding");
}
if (!attachedDB.getInstance().equals(detachtedDB.getInstance())) {
throw new AuthorisationException(unixUser, "update", existingEntity, "instance");
}
return super.update(existingEntity);
}
}