矿床可视化仿真系统中定制查询的实现

在矿床仿真系统中，用户所查询的数据是地质数据库的外部视图，需经查询条件的设置来获得。全文基于XML技术，生成查询配置文档，经DOM解析建立定制的查询树，保存所需的外部视图，供用户直接选择使用。从而解决了不同视图供不同用户、一个视图供多个用户、各个视图供多次使用的问题，且简化了用户的操作，提高了仿真系统的实用性。

Implementation of Custom - built Query in Visual Simulation System of Mineral Deposit

In mineral deposit simulation system, the users raise a query on the external view of the geological database through the setting of query condition. Based on XML (Extensible Markup Language) technology, this paper provides a way of custom-built query by creating the query configuration files. Through parsing by DOM (Document Object Model), a query tree has been built, and the required external views have been saved for the subsequent use, thus, a view can be used for multi-users, and different views can be used by different users, also every view can be used for several times, so that the operations have been simplified and the practicability of the simulation system has been enhanced.