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使用JPL从Java重新启动Prolog引擎

[英]Restarting Prolog engine from Java using JPL

原文 2012-04-11 22:31:39 5 1 java/ prolog/ jpl

In one java application that uses JPL to interact with Prolog, I want to be able to restart the prolog engine with different settings. 在一个使用JPL与Prolog进行交互的Java应用程序中，我希望能够使用不同的设置重新启动Prolog引擎。 As an example, I would like to change from SWI to YAP (I configure which engine to use this with the method JPL.setNativeLibraryDir with the path of the right native library I need to use). 例如，我想从SWI更改为YAP（我使用方法JPL.setNativeLibraryDir配置要使用此引擎的引擎， JPL.setNativeLibraryDir带有需要使用的正确本机库的路径）。

So after changing the JPL configuration, I was trying to halt the already running prolog engine in order to restart it again afterwards with JPL.init() . 因此，在更改了JPL配置之后，我试图停止已经运行的prolog引擎，以便随后使用JPL.init()重新启动它。

First I took a look to JPL.halt() , but the documentation says it is deprecated and the comments in the source code of the method said that it is no-op. 首先，我看了一下JPL.halt() ，但是文档说它已被弃用，并且该方法的源代码中的注释说它是no-op。

Afterwards, I tried to just launch a query with 'halt', but although I see in the console "YAP execution halted" as expected, my java application is also halted (!). 之后，我尝试仅使用'halt'启动查询，但是尽管我在控制台中看到“ YAP执行已停止”，但我的Java应用程序也已停止（！）。

Is there a way to restart the logic engine using JPL without killing my java application ? 有没有一种方法可以使用JPL重新启动逻辑引擎而不杀死我的Java应用程序？

1 个解决方案

why not using a batch file to run scripts. 为什么不使用批处理文件来运行脚本。 first you can have /Applications/swi -l your/swi/code and then use halt inside your prolog code so that it halts after execution. 首先，您可以使用/ Applications / swi -l your / swi / code，然后在您的序言代码中使用halt，以便在执行后暂停。 You can run your batch file inside java using runtime method. 您可以使用运行时方法在Java内部运行批处理文件。