| 摘要 |
A computer-implemented method for querying multiple different types of information, each type of information having a different evaluator, includes receiving a query comprising an identification of at least two evaluators, at least one relationship between the evaluators, and a method of combining results from the evaluators; parsing the query to create an evaluation sequence comprising an ordered sequence of invocations of the evaluators; invoking the evaluators in the evaluation sequence; and combining results from the evaluators according to the method of combining results from the evaluators specified in the query. A system for querying multiple different types of information, each type of information having a different evaluator, includes a parser for receiving a query comprising an identification of at least two evaluators, at least one relationship between the evaluators, and a method of combining results from the evaluators; means, coupled to the parser, for creating an evaluation sequence comprising an ordered sequence of invocations of the evaluators; means, coupled to the creating means, for invoking the evaluators in the evaluation sequence; and means, coupled to the invoking means, for combining results from the evaluators according to the method of combining results from the evaluators specified in the query. |
