Preliminaries#
KnowWE is commonly used to develop and maintain a knowledge base. Later, the built knowledge base is deployed and used in the context of a larger application. For this reason, it becomes important to load knowledge bases and run problem-solving sessions without the KnowWE context.
The following notes explain how to develop your own Eclipse project with all plugins required to run a d3web application.
Create your Eclipse Project#
- Simply start a new Java project and create (if not already done) a new folder "lib".
- Copy all d3web jars (including necessary foreign jars) into the lib folder (these jars can be easily accessed from d3web/bin/lib in the current KnowWE Distribution
) : http://sourceforge.net/projects/d3web
- Java Project Properties: Project->Build Path->Libraries: Add all jars as Jar libraries to the project
Some Demo Code#
In your own code, you are first required to load the plugins for the knowledge base persistence etc.; this is accomplished by the JPFPluginManager.
private void demo() throws IOException {
// Initializing the plugins for the persistence
// retrieve all relevant plugins in folder "lib"
File[] files = getAllJPFPlugins("lib");
JPFPluginManager.init(files);
// Alternatively: just pass the folder and ignore warnings
// when file not a jpf plugin
// JPFPluginManager.init("lib");
// Loading the knowledge base and do some retrieval of solutions and questions
PersistenceManager persistenceManager = PersistenceManager.getInstance();
String knowledgeFilename = "/temp/d.jar";
// Load knowledge base
KnowledgeBase knowledgeBase = persistenceManager.load(new File(knowledgeFilename ));
List<Solution> solutions = knowledge.getManager().getSolutions();
System.out.println(solutions);
List<Question> questions = knowledge.getManager().getQuestions();
System.out.println(questions);
}
private File[] getAllJPFPlugins(String libFolder) {
List<File> fileList = new ArrayList<File>();
for (File file : new File(libFolder).listFiles()) {
if (file.getName().contains("-jpf-plugin"))
fileList.add(file);
}
return fileList.toArray(new File[fileList.size()]);
}
