Provide an accessor for their connection ; however , application servers and web application frameworks frequently use the decorator pattern to wrap jdbc connections 为它们的连接提供了存取器；但是，应用程序服务器和web应用程序框架频繁地使用修饰器模式包装jdbc连接。
Given the el s role as a simplified language for specifying dynamic attribute values , one interesting feature of the el accessors is that , unlike the java language s accessors , they do not throw exceptions when applied to 假定el充当指定动态属性值的简化语言， el存取器有一个有趣的功能（与java语言的存取器不同） ，那就是它们在应用于
Using identifiers and accessors , then , the el is able to traverse object hierarchies containing either application data exposed through scoped variables or information about the environment through the el implicit objects El还可以通过使用标识符和存取器，遍历包含应用程序数据（通过限制了作用域的变量公开）或关于环境的信息（通过el隐式对象）的对象层次结构。
Is not that they are vulnerable to confusing alias side effects which they are , but that their semantics were not properly documented . if accessors were clearly documented to have reference semantics instead of the commonly assumed value semantics , callers might be more likely to realize that when they call 如果存取器被清楚地说明为具有引用语义（而不是像通常那样被假设为值语义） ，那么调用者将更可能认识到，在它们调用setlocation时，它们是将point对象的所有权转移给另一个实体，并且也不大可能仍然认为它们还拥有point对象的所有权，因而还能够再次使用它。
