fluid-api/src/main/java/com/fluidbpm/program/api/vo/ABaseFluidJSONObject.java
@XmlTransient
    public Long getDateAsLongFromJson(Date dateValueParam)
    {
        if(dateValueParam == null)
        {
            return null;
        }

        return dateValueParam.getTime();
    }
@XmlTransient
    public Long getDateAsLongFromJson(Date dateValueParam)
    {
        if(dateValueParam == null)
        {
            return null;
        }

        return dateValueParam.getTime();
    }
Converts the {@code Date} object into a {@code Long} timestamp.

Returns {@code null} if {@code dateValueParam} is {@code null}.

@param dateValueParam {@code Long} Object from {@code dateValueParam}
@return The milliseconds since January 1, 1970, 00:00:00 GMT