homework/BaseApprover.java

public abstract class BaseApprover implements Approver {
    private String approverName;
    private ApprovalLevel level;
    private Logger logger;
    
    public BaseApprover(String approverName, ApprovalLevel level, Logger logger) {
        this.approverName = approverName;
        this.level = level;
        this.logger = logger;
    }
    
    @Override
    public ApprovalLevel getRequiredLevel() {
        return level;
    }
    
    @Override
    public String getApproverName() {
        return approverName;
    }
    
    protected Logger getLogger() {
        return logger;
    }
    
    protected abstract boolean canApprove(Order order);
    
    @Override
    public boolean approve(Order order, ApprovalContext context) {
        logger.info(getApproverName() + " 正在审批订单: " + order.getOrderId());
        
        if (!canApprove(order)) {
            logger.warn(getApproverName() + " 拒绝审批订单: " + order.getOrderId());
            context.addApprovalRecord(this, false, "不符合审批条件");
            context.setCurrentStatus(ApprovalStatus.REJECTED);
            context.setRejectionReason("不符合" + getApproverName() + "的审批条件");
            return false;
        }
        
        // 子类可以提供额外的审批逻辑
        boolean approved = performApproval(order, context);
        
        if (approved) {
            logger.info(getApproverName() + " 已批准订单: " + order.getOrderId());
            context.addApprovalRecord(this, true, "审批通过");
        } else {
            logger.warn(getApproverName() + " 已拒绝订单: " + order.getOrderId());
            context.addApprovalRecord(this, false, "审批拒绝");
            context.setCurrentStatus(ApprovalStatus.REJECTED);
            context.setRejectionReason(getApproverName() + "拒绝了订单");
        }
        
        return approved;
    }
    
    protected abstract boolean performApproval(Order order, ApprovalContext context);
}