final StaticQueryContext sqc1 = config.newStaticQueryContext();
final XQueryExpression exp1 = sqc1.compileQuery("declare variable $in as xs:integer external;" +
"document{ <a>{$in * $in}</a> }");
// Compile the second query (each query should have its own static context)
final StaticQueryContext sqc2 = config.newStaticQueryContext();
final XQueryExpression exp2 = sqc2.compileQuery("/a + 5");
// Run the first query
final DynamicQueryContext dynamicContext = new DynamicQueryContext(config);
dynamicContext.setParameterValue("in", Int64Value.makeIntegerValue(3));