2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.mdsal.binding.java.api.generator;
10 import static com.google.common.base.Preconditions.checkArgument;
12 import org.eclipse.jdt.annotation.NonNull;
13 import org.opendaylight.mdsal.binding.model.api.ConcreteType;
14 import org.opendaylight.mdsal.binding.model.api.GeneratedProperty;
15 import org.opendaylight.mdsal.binding.model.api.GeneratedTransferObject;
16 import org.opendaylight.mdsal.binding.model.api.Type;
19 * Random utility methods for dealing with {@link Type} objects.
21 final class TypeUtils {
22 private static final String VALUE_PROP = "value";
25 throw new UnsupportedOperationException();
29 * Given a {@link Type} object lookup the base Java type which sits at the top
30 * of its type hierarchy.
32 * @param type Input Type object
33 * @return Resolved {@link ConcreteType} instance.
35 static ConcreteType getBaseYangType(final @NonNull Type type) {
36 // Already the correct type
37 if (type instanceof ConcreteType) {
38 return (ConcreteType) type;
41 checkArgument(type instanceof GeneratedTransferObject, "Unsupported type %s", type);
43 // Need to walk up the GTO chain to the root
44 GeneratedTransferObject rootGto = (GeneratedTransferObject) type;
45 while (rootGto.getSuperType() != null) {
46 rootGto = rootGto.getSuperType();
49 // Look for the 'value' property and return its type
50 for (GeneratedProperty s : rootGto.getProperties()) {
51 if (VALUE_PROP.equals(s.getName())) {
52 return (ConcreteType) s.getReturnType();
56 // Should never happen
57 throw new IllegalArgumentException(String.format("Type %s root %s properties %s do not include \"%s\"",
58 type, rootGto, rootGto.getProperties(), VALUE_PROP));