uk.gov.ofwat.fountain.aspect.cache.dao.specific.groupDao.FindEntriesForCompanyAndGroupAspect.java Source code

Introduction

Here is the source code for uk.gov.ofwat.fountain.aspect.cache.dao.specific.groupDao.FindEntriesForCompanyAndGroupAspect.java

Source

/*
 *  Copyright (C) 2009 Water Services Regulation Authority (Ofwat)
 *
 *  This program 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 2 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package uk.gov.ofwat.fountain.aspect.cache.dao.specific.groupDao;

import java.util.List;
import java.util.Map;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.core.annotation.Order;

import uk.gov.ofwat.fountain.aspect.cache.dao.DaoCache;
import uk.gov.ofwat.fountain.aspect.cache.dao.UpdateListener;
import uk.gov.ofwat.fountain.dao.GroupDao;
import uk.gov.ofwat.fountain.domain.Company;
import uk.gov.ofwat.fountain.domain.Group;
import uk.gov.ofwat.fountain.domain.GroupEntry;

/**
 * log time taken to execute a method.
 * 
 */
@Aspect
@Order(250)
public class FindEntriesForCompanyAndGroupAspect extends DaoCache implements UpdateListener {

    private Map<String, List<GroupEntry>> cacheByForCompanyAndGroup;

    public void setGroupDao(GroupDao groupDao) {
        groupDao.addItemUpdateListener(this);
    }

    public void updateOccurred() {
        initialiseCache();
    }

    public Map getCache() {
        return cacheByForCompanyAndGroup;
    }

    @SuppressWarnings("unchecked")
    public void setCache(Map cache) {
        cacheByForCompanyAndGroup = cache;
    }

    @SuppressWarnings("unchecked")
    @Around("execution(public * uk.gov.ofwat.fountain.dao.GroupDao+.findEntriesForCompanyAndGroup(uk.gov.ofwat.fountain.domain.Company, uk.gov.ofwat.fountain.domain.Group))")
    public List<GroupEntry> cacheOnFindEntriesForCompanyAndGroup(ProceedingJoinPoint pjp) throws Throwable {
        if (!isEnabled()) {
            return (List) pjp.proceed();
        }
        if (null == getCache()) {
            initialiseCache(pjp.getTarget().getClass());
        }

        Object[] args = pjp.getArgs();
        String key = ((Company) args[0]).getId() + "-" + ((Group) args[1]).getId();

        List<GroupEntry> retVal = null;
        if (cacheByForCompanyAndGroup.containsKey(key)) {
            retVal = cacheByForCompanyAndGroup.get(key);
        } else {
            retVal = (List<GroupEntry>) pjp.proceed();
            cacheByForCompanyAndGroup.put(key, retVal);
            incrementCache(pjp);
        }

        return retVal;
    }

    @Around("execution(public * uk.gov.ofwat.fountain.dao.GroupDao+.delete(int))")
    public void removeFromCacheOnDelete(ProceedingJoinPoint pjp) throws Throwable {
        if (!isEnabled()) {
            pjp.proceed();
            return;
        }
        throw new UnsupportedOperationException(
                "uk.gov.ofwat.fountain.dao.GroupDao.delete(int) has not been implemented. If you are implementing it you must implement removeFromCacheOnDelete()");
    }

    @Around("execution(public * uk.gov.ofwat.fountain.dao.GroupDao+.update(uk.gov.ofwat.fountain.domain.Group))")
    public void removeFromCacheOnUpdate(ProceedingJoinPoint pjp) throws Throwable {
        if (!isEnabled()) {
            pjp.proceed();
            return;
        }
        throw new UnsupportedOperationException(
                "uk.gov.ofwat.fountain.dao.GroupDao.delete(int) has not been implemented. If you are implementing it you must implement removeFromCacheOnUpdate()");
    }

}