*@param is the configuration stream
*/
SolrConfig(SolrResourceLoader loader, String name, InputStream is)
throws ParserConfigurationException, IOException, SAXException {
super(loader, name, is, "/config/");
defaultIndexConfig = new SolrIndexConfig(this, null, null);
mainIndexConfig = new SolrIndexConfig(this, "mainIndex", defaultIndexConfig);
booleanQueryMaxClauseCount = getInt("query/maxBooleanClauses", BooleanQuery.getMaxClauseCount());
filtOptEnabled = getBool("query/boolTofilterOptimizer/@enabled", false);
filtOptCacheSize = getInt("query/boolTofilterOptimizer/@cacheSize",32);
filtOptThreshold = getFloat("query/boolTofilterOptimizer/@threshold",.05f);