如何为内存 HSQL 编写自定义函数 [英] How to write custom functions for in memory HSQL

问题描述

我想在 HSQL 中编写一个简单的函数，以便向后兼容 DB2 函数.从理论上讲，我应该能够在 java 中编写一个自定义函数并将其挂接到 HSQL 中.有没有这方面的指导/文档?

I want to write a simple function in HSQL so that it is backwards compatible with DB2 functions. In theory I should be able to write a custom function in java and hook it into HSQL. Is there any direction/documentation on just that?

推荐答案

HSQLDB 指南中记录了用户定义的函数.有关用 Java 编写的函数，请参阅本节.

User defined functions are documented in the HSQLDB Guide. See this section for functions written in Java.

http://hsqldb.org/doc/2.0/guide/sqlroutines-chapt.html#src_jrt_routines

您还可以用 SQL 编写函数，这在指南的同一章中有记录.

You can also write your functions in SQL, which is documented in the same chapter of the Guide.

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