public void visit(ValueExpression expression) {
IdentificationVariable identificationVariable = (IdentificationVariable) expression.getExpression();
// Create the Expression for the identification variable
identificationVariable.accept(ExpressionBuilderVisitor.this);
localExpression = queryExpression;
// Retrieve the mapping's reference descriptor
declaration = queryContext.findDeclaration(identificationVariable.getVariableName());
descriptor = declaration.getDescriptor();