uk.gov.ofwat.fountain.aspect.cache.dao.generic.GetAllAspect.java Source code

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Here is the source code for uk.gov.ofwat.fountain.aspect.cache.dao.generic.GetAllAspect.java

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/*
 *  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.generic;

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.dao.CachableCodedDao;
import uk.gov.ofwat.fountain.dao.CachableEntityDao;
import uk.gov.ofwat.fountain.dao.EntityDao;
import uk.gov.ofwat.fountain.domain.Coded;
import uk.gov.ofwat.fountain.domain.Entity;

/**
 * log time taken to execute a method.
 * 
 */
@Aspect("perthis(execution(public * uk.gov.ofwat.fountain.dao.*Dao+.getAll()))")
@Order(205)
public class GetAllAspect extends DaoCache {

    private List<Object> cacheAll;

    public Map getCache() {
        throw new UnsupportedOperationException();
    }

    public void setCache(Map cache) {
        throw new UnsupportedOperationException();
    }

    public void clear() {
        if (null != cacheAll) {
            cacheAll.clear();
        }
    }

    public void initialiseCache(Class target) {
        if (null != target) {
            setTarget(target);
        }
    }

    public int getPercentageFull() {
        return 100;
    }

    @SuppressWarnings("unchecked")
    @Around("uk.gov.ofwat.fountain.aspect.cache.dao.DaoCache.getAllEntityPC()")
    public List cacheOnGetAll(ProceedingJoinPoint pjp) throws Throwable {
        if (!isEnabled()) {
            return (List) pjp.proceed();
        }
        if (null == cacheAll || cacheAll.isEmpty()) {
            cacheAll = (List<Object>) pjp.proceed();
            initialiseCache(pjp.getTarget().getClass());
        }
        return cacheAll;
    }

    @Around("uk.gov.ofwat.fountain.aspect.cache.dao.DaoCache.deleteDaoPC()")
    public void removeFromCacheOnDelete(ProceedingJoinPoint pjp) throws Throwable {

        if (!isEnabled()) {
            pjp.proceed();
            return;
        }
        Object[] args = pjp.getArgs();
        if (null != cacheAll) {
            Integer key = (Integer) args[0];
            Object domainObj = ((EntityDao) pjp.getThis()).findById(key);
            pjp.proceed(args);
            cacheAll.remove(domainObj);
        } else {
            pjp.proceed(args);
        }
    }

    @Around("uk.gov.ofwat.fountain.aspect.cache.dao.DaoCache.updateDaoPC()")
    public void removeFromCacheOnUpdate(ProceedingJoinPoint pjp) throws Throwable {
        if (!isEnabled()) {
            pjp.proceed();
            return;
        }
        Object[] args = pjp.getArgs();
        if (null != cacheAll) {
            Object domainObj = args[0];
            pjp.proceed(args);
            cacheAll.clear();
        } else {
            pjp.proceed(args);
        }
    }

}