--- a/src/XMLCommand.h	Thu Jan 10 19:50:21 2019 +0100
+++ b/src/XMLCommand.h	Thu Jan 10 20:05:13 2019 +0100
@@ -23,6 +23,11 @@
 #include <vector>
 #include <algorithm>
 
+#include <xercesc/sax2/SAX2XMLReader.hpp>
+#include <xercesc/sax2/XMLReaderFactory.hpp>
+#include <xercesc/sax2/DefaultHandler.hpp>
+#include <xercesc/util/XMLString.hpp>
+
 #include <relpipe/writer/typedefs.h>
 
 namespace relpipe {
@@ -34,6 +39,7 @@
 
 	void process(std::istream& input, std::ostream& output) {
 		using namespace relpipe::writer;
+		using namespace xercesc;
 		std::shared_ptr<RelationalWriter> writer(Factory::create(output));
 
 		// TODO: remove demo