Sequence resultSequence = expr.eval(context, ndocs, null, null);
Sequence resultSequence = expr.eval(ndocs, null, null);
	protected String search(		String query,		int howmany,		int start,		boolean printSummary,		boolean indent,		String stylesheet) {		String result = null;		try {			StaticContext context = new StaticContext(broker);			XPathLexer2 lexer = new XPathLexer2(new StringReader(query));			XPathParser2 parser = new XPathParser2(lexer);			XPathTreeParser2 treeParser = new XPathTreeParser2(context);			parser.xpath();			if (parser.foundErrors()) {				return formatErrorMsg(parser.getErrorMessage(), SYNTAX_ERROR);			}			AST ast = parser.getAST();			HttpServer.LOG.debug("generated AST: " + ast.toStringTree());			PathExpr expr = new PathExpr();			treeParser.xpath(ast, expr);			if (treeParser.foundErrors()) {				return formatErrorMsg(					treeParser.getErrorMessage(),					SYNTAX_ERROR);			}			HttpServer.LOG.info("query: " + expr.pprint());			if (parser.foundErrors())				return formatErrorMsg(parser.getErrorMessage(), SYNTAX_ERROR);			long startTime = System.currentTimeMillis();			DocumentSet ndocs = expr.preselect(context);			if (ndocs.getLength() == 0)				result = formatErrorMsg("nothing found", OK);			else {				Sequence resultSequence = expr.eval(context, ndocs, null, null);				long queryTime = System.currentTimeMillis() - startTime;				HttpServer.LOG.debug("evaluation took " + queryTime + "ms.");				startTime = System.currentTimeMillis();				switch (resultSequence.getItemType()) {					case Type.NODE :						if (printSummary)							result =								printSummary(									(NodeSet) resultSequence,									queryTime);						else							result =								printAll(									(NodeSet) resultSequence,									howmany,									start,									queryTime,									indent,									stylesheet);						break;					default :						result = printValues(resultSequence, howmany, start);						break;				}			}		} catch (Exception e) {			HttpServer.LOG.debug(e.toString(), e);			result = formatErrorMsg(e.toString(), UNKNOWN_ERROR);		}		return result;	}