| 摘要 |
<p>According to an embodiment, a query element determining unit and an exit condition determining unit. The query element determining unit is configured to determine whether an attribute, element, or value corresponding to query's interest in a received structured document is satisfied for each of query elements into which query data for specifying conditions for the structured document is broken down for respective conditions, output one of a positive output indicating that a condition is satisfied, a negative output indicating that a condition is not satisfied, and a standby output indicating that a condition is not allowed to be determined yet as an output value, and output the standby output until the positive or negative output is output. The exit condition determining unit is configured to output one of a positive output, a negative output, and a standby output as an output value of an exit condition.</p> |
