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    • 3. 发明授权
    • Software system with controlled access to objects
    • 具有受控访问对象的软件系统
    • US07818798B2
    • 2010-10-19
    • US11347440
    • 2006-02-03
    • Jerry J. ShekhelRyan M. JansenSeth D. Goldstein
    • Jerry J. ShekhelRyan M. JansenSeth D. Goldstein
    • G06F11/00H04L9/32
    • G06F21/53G06F9/468
    • A computer system configured to intercept method calls placed on an object. By intercepting method calls, processing may be performed on a method call-by-method call basis. As part of the processing, metadata for an object is consulted to partition the methods for that object into subsets. The processing performed in response to any specific method call may be based on the subset to which the method belongs. The type of metadata may depend on the desired operation of the computer system. Metadata representing a white list or black list may be used in a computer system that implements a security zone that allows access to methods deemed to be safe or to deny access to methods deemed to be unsafe. In a performance monitoring system, metadata may identify methods to be logged or methods for which execution cost are to be measured. Values returned by a method call may also be processed when the method calls are intercepted. The returned value may be wrapped with a wrapper that holds data useful in implementing a security zone or for performing other processing.
    • 被配置为拦截放置在对象上的方法调用的计算机系统。 通过截取方法调用,可以在方法调用方法调用的基础上执行处理。 作为处理的一部分,查询对象的元数据以将该对象的方法分成子集。 响应于任何特定方法调用执行的处理可以基于该方法所属的子集。 元数据的类型可能取决于计算机系统的期望操作。 表示白名单或黑名单的元数据可用于实现安全区域的计算机系统,该安全区域允许访问被认为是安全的方法或拒绝访问被认为不安全的方法。 在性能监视系统中,元数据可以标识待记录的方法或要测量执行成本的方法。 当方法调用被拦截时,方法调用返回的值也可以被处理。 返回的值可以用包含有效实现安全区域或执行其他处理的数据的包装器来包装。