/**
* Loads an index if it is not already loaded.
*
* @param name - The name of the
* @return
* @throws IOException
* @throws ConfigurationException
*/
private IndexHelper loadIndex(String name) throws IOException, ConfigurationException {
if (env.hasIndex(name)) {
return env.getIndex(name);
}
info("loading index " + name);
JSONObject indexConfig = configuration.getIndex(name);
File parentDir = requireDirectory(configuration.getIndexes(), "outputDir");
IndexHelper helper = new IndexHelper(new File(parentDir, name), true);
if (indexConfig.containsKey("similarity")) {
String sim = requireString(indexConfig, "similarity");
if (sim.equals("ESA")) {
helper.getSearcher().setSimilarity(new ESASimilarity.LuceneSimilarity());
} else {
throw new ConfigurationException("unknown similarity type: " + sim);
}
}
if (indexConfig.containsKey("analyzer")) {
String analyzer = requireString(indexConfig, "analyzer");
if (analyzer.equals("ESA")) {
helper.setAnalyzer(new ESAAnalyzer());
} else {
throw new ConfigurationException("unknown analyzer type: " + analyzer);
}
}
env.addIndex(name, helper);
return helper;
}
