我正在编写一个类来封装一些业务规则,每个业务规则都由布尔值表示.该类将用于处理InfoPath表单,因此规则通过使用XPath操作在全局
XML数据结构中查找值来获取当前的程序状态.什么是最好的(最惯用的)方式来暴露这些规则给呼叫者 – 属性或公共方法？
Rules rules = new Rules();
if ( rules.ProjectRequiresApproval ) {
// get approval
} else {
// skip approval
}
Rules rules = new Rules();
if ( rules.ProjectRequiresApproval() ) {
// get approval
} else {
// skip approval
}
public class Rules() {
private int _amount;
private int threshold = 100;
public Rules() {
_amount = someExpensiveXpathOperation;
}
// rule property
public bool ProjectRequiresApproval {
get { return _amount > threshold }
}
}
规则类暴露规则作为方法
public class Rules() {
private int _amount;
private int threshold = 100;
public Rules() {
_amount = someExpensiveXpathOperation;
}
// rule method
public bool ProjectRequiresApproval() {
return _amount > threshold;
}
}
一个人的利弊是什么？
