How to get previous value of an attribute in the VOImpl file?

Hi all
I want to compare if the current value of the attribute VO A1 is equal to the previous value of the A1 when the value of this attribute A1 gets changed, how to get the previous value of the A1?
I know that in the VORowImpl file I can use this.getA1 () which returns me the current value of the A1, but I don't know how me may return the previous value?

Appreciate your help in advance!
Thank you
Yvette

getPostedAttribute the value of the attribute as it was queried from the database.
Here is an example written in EmployeesImpl

    /**
     * Sets value as the attribute value for Salary.
     * @param value value to set the Salary
     */
    public void setSalary(BigDecimal value) {
        Object attribute = getPostedAttribute((EmployeesImpl.SALARY));
        if(attribute!=null)
            System.out.println("Attribite value " + attribute); //this will give you the value as it was in the data base before you modified it.
        else
            System.out.println("attribute value is null");
        setAttributeInternal(SALARY, value);
    }

Tags: Java

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