A type-safe object-oriented solution for the dynamic construction of queries

Peter Rosenthal
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Abstract

Many object-oriented applications use large numbers of structurally different database queries. With current technology, writing applications that generate queries at runtime is difficult and error-prone. FROQUE, a framework for object-oriented queries, provides a secure and purely object-oriented solution to access relational databases. As such, it is easy to use for object-oriented programmers and with the help of object-oriented compilers it guarantees that queries formulated in the object-oriented world at execution time result in correct SQL queries. Thus, FROQUE is an improvement over existing database frameworks such as Apache OJB, the object relational bridge, which are not strongly typed and can lead to runtime errors.
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用于查询动态构造的类型安全的面向对象解决方案
许多面向对象的应用程序使用大量结构不同的数据库查询。使用当前的技术,编写在运行时生成查询的应用程序很困难,而且容易出错。面向对象查询的框架FROQUE提供了访问关系数据库的安全和纯粹面向对象的解决方案。因此,对于面向对象的程序员来说,它很容易使用,并且在面向对象编译器的帮助下,它保证在执行时在面向对象世界中制定的查询会产生正确的SQL查询。因此,FROQUE是对现有数据库框架(如Apache OJB,对象关系桥)的改进,后者不是强类型的,可能导致运行时错误。
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