edu.umn.msi.tropix.persistence.aop.AutoUserAspect.java Source code

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Here is the source code for edu.umn.msi.tropix.persistence.aop.AutoUserAspect.java

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/*******************************************************************************
 * Copyright 2009 Regents of the University of Minnesota. All rights
 * reserved.
 * Copyright 2009 Mayo Foundation for Medical Education and Research.
 * All rights reserved.
 *
 * This program is made available under the terms of the Eclipse
 * Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR
 * IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR CONDITIONS
 * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A
 * PARTICULAR PURPOSE.  See the License for the specific language
 * governing permissions and limitations under the License.
 *
 * Contributors:
 * Minnesota Supercomputing Institute - initial API and implementation
 ******************************************************************************/

package edu.umn.msi.tropix.persistence.aop;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.core.annotation.Order;
import org.springframework.util.StringUtils;

import edu.umn.msi.tropix.persistence.dao.TropixObjectDao;
import edu.umn.msi.tropix.persistence.dao.UserDao;
import edu.umn.msi.tropix.persistence.service.impl.UserUtils;

@Aspect
@Order(20) // See not on security aspect for explaination of @Order
class AutoUserAspect {
    private static final Log LOG = LogFactory.getLog(AutoUserAspect.class);
    private UserDao userDao;
    private TropixObjectDao tropixObjectDao;

    AutoUserAspect(final UserDao userDao, final TropixObjectDao tropixObjectDao) {
        LOG.debug("In auto user aspect constructor");
        this.userDao = userDao;
        this.tropixObjectDao = tropixObjectDao;
    }

    @SuppressWarnings("unchecked")
    public <T extends Annotation> T getAnnnotation(final Class<T> type, final Annotation[] annotations) {
        T theAnnotation = null;
        for (final Annotation annotation : annotations) {
            if (annotation.annotationType().equals(type)) {
                theAnnotation = (T) annotation;
                break;
            }
        }
        return theAnnotation;
    }

    @Before(value = "execution(* edu.umn.msi.tropix.persistence.service.*+.*(..))")
    public void autoCreateUsers(final JoinPoint joinPoint) {
        final Method method = AopUtils.getMethod(joinPoint);
        //if(method.getAnnotation(PersistenceMethod.class) == null) {
        //  return;
        //}
        final Annotation[][] annotations = method.getParameterAnnotations();
        for (int i = 0; i < annotations.length; i++) {
            final AutoUser autoUserAnnotation = getAnnnotation(AutoUser.class, annotations[i]);
            if (autoUserAnnotation != null) {
                final String autoId = (String) joinPoint.getArgs()[i];
                if (StringUtils.hasText(autoId)) {
                    UserUtils.ensureUserExists(autoId, userDao, tropixObjectDao);
                }
            }
        }
    }
}