diff -r 9ca02f0f6751 -r a72d55ff30c9 java/alt2xml-out-xpath/src/cz/frantovo/alt2xml/out/xpath/CompoundVariableResolver.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/java/alt2xml-out-xpath/src/cz/frantovo/alt2xml/out/xpath/CompoundVariableResolver.java	Sun Sep 07 01:28:07 2014 +0200
@@ -0,0 +1,45 @@
+/**
+ * Alt2XML
+ * Copyright © 2014 František Kučera (frantovo.cz)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package cz.frantovo.alt2xml.out.xpath;
+
+import javax.xml.namespace.QName;
+import javax.xml.xpath.XPathVariableResolver;
+
+/**
+ *
+ * @author Ing. František Kučera (frantovo.cz)
+ */
+public class CompoundVariableResolver implements XPathVariableResolver {
+
+	private final XPathVariableResolver[] resolvers;
+
+	public CompoundVariableResolver(XPathVariableResolver... resolvers) {
+		this.resolvers = resolvers;
+	}
+
+	@Override
+	public Object resolveVariable(QName variableName) {
+		for (XPathVariableResolver r : resolvers) {
+			Object value = r.resolveVariable(variableName);
+			if (value != null) {
+				return value;
+			}
+		}
+		return null;
+	}
+}