com.thesoftwareguild.mavenflooringmastery.aspects.AuditAspect.java Source code

Introduction

Here is the source code for com.thesoftwareguild.mavenflooringmastery.aspects.AuditAspect.java

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package com.thesoftwareguild.mavenflooringmastery.aspects;

import com.thesoftwareguild.mavenflooringmastery.daos.AuditEntryDao;
import com.thesoftwareguild.mavenflooringmastery.daos.OrderDao;
import com.thesoftwareguild.mavenflooringmastery.dtos.AuditEntry;
import com.thesoftwareguild.mavenflooringmastery.dtos.Order;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.aspectj.lang.ProceedingJoinPoint;

/**
 *
 * @author Christian Choi
 */

public class AuditAspect {

    AuditEntryDao dao = new AuditEntryDao();
    OrderDao odao;

    public AuditAspect(OrderDao odao) {
        this.odao = odao;
    }

    //This is the advice
    public Object logCreate(ProceedingJoinPoint jp) {

        Object retVal = null;

        try {
            retVal = jp.proceed();

            Order order = (Order) jp.getArgs()[0];
            Date now = new Date();
            AuditEntry entry = new AuditEntry(now, order, "CREATED");

            dao.log(entry);

        } catch (Throwable ex) {
            Logger.getLogger(AuditAspect.class.getName()).log(Level.SEVERE, null, ex);
        }

        return retVal;

    }

    public Object logUpdate(ProceedingJoinPoint jp) {

        Object retVal = null;

        try {
            retVal = jp.proceed();

            Order order = (Order) jp.getArgs()[0];
            Date now = new Date();
            AuditEntry entry = new AuditEntry(now, order, "UPDATED");

            dao.log(entry);

        } catch (Throwable ex) {
            Logger.getLogger(AuditAspect.class.getName()).log(Level.SEVERE, null, ex);
        }

        return retVal;

    }

    public Object logDelete(ProceedingJoinPoint jp) {

        Object retVal = null;

        try {
            //retVal = jp.proceed(); CANT DO THIS BECAUSE AFTER THE METHOD DELETE IN ORDERDAO IS CALLED, the order is gone. It'll throw a nullpointerexception!

            Integer orderNumber = (Integer) jp.getArgs()[0]; //This is an Integer because the argument passed in the delete method is an integer
            Order order = odao.get(orderNumber);

            retVal = jp.proceed();

            Date now = new Date();
            AuditEntry entry = new AuditEntry(now, order, "DELETED");

            dao.log(entry);

        } catch (Throwable ex) {
            Logger.getLogger(AuditAspect.class.getName()).log(Level.SEVERE, null, ex);
        }

        return retVal;

    }

}