2 * Copyright (c) 2014 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.dom.codec.impl;
10 import static com.google.common.base.Verify.verify;
11 import static com.google.common.base.Verify.verifyNotNull;
12 import static java.util.Objects.requireNonNull;
14 import com.google.common.collect.ImmutableSet;
15 import java.lang.reflect.Method;
16 import java.util.ArrayList;
17 import java.util.Iterator;
18 import java.util.List;
19 import org.opendaylight.mdsal.binding.model.api.GeneratedTransferObject;
20 import org.opendaylight.mdsal.binding.model.api.Type;
21 import org.opendaylight.mdsal.binding.runtime.api.RuntimeGeneratedUnion;
22 import org.opendaylight.mdsal.binding.spec.naming.BindingMapping;
23 import org.opendaylight.yangtools.concepts.IllegalArgumentCodec;
24 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
25 import org.opendaylight.yangtools.yang.model.api.type.UnionTypeDefinition;
27 final class UnionTypeCodec implements IllegalArgumentCodec<Object, Object> {
28 private final ImmutableSet<UnionValueOptionContext> typeCodecs;
29 private final Class<?> unionClass;
31 private UnionTypeCodec(final Class<?> unionClass, final List<UnionValueOptionContext> typeCodecs) {
32 this.unionClass = requireNonNull(unionClass);
33 // Squashes duplicates
34 this.typeCodecs = ImmutableSet.copyOf(typeCodecs);
37 static UnionTypeCodec of(final Class<?> unionCls, final UnionTypeDefinition unionType,
38 final BindingCodecContext codecContext) throws Exception {
39 final List<String> unionProperties = extractUnionProperties(codecContext.getRuntimeContext()
40 .getTypeWithSchema(unionCls).javaType());
41 final List<TypeDefinition<?>> unionTypes = unionType.getTypes();
42 verify(unionTypes.size() == unionProperties.size(), "Mismatched union types %s and properties %s",
43 unionTypes, unionProperties);
45 final List<UnionValueOptionContext> values = new ArrayList<>(unionTypes.size());
46 final Iterator<String> it = unionProperties.iterator();
47 for (final TypeDefinition<?> subtype : unionTypes) {
48 final String getterName = BindingMapping.GETTER_PREFIX + BindingMapping.toFirstUpper(it.next());
49 final Method valueGetter = unionCls.getMethod(getterName);
50 final Class<?> valueType = valueGetter.getReturnType();
51 final IllegalArgumentCodec<Object, Object> codec = codecContext.getCodec(valueType, subtype);
53 values.add(new UnionValueOptionContext(unionCls, valueType, valueGetter, codec));
56 return new UnionTypeCodec(unionCls, values);
59 private static List<String> extractUnionProperties(final Type type) {
60 verify(type instanceof GeneratedTransferObject, "Unexpected runtime type %s", type);
62 GeneratedTransferObject gto = (GeneratedTransferObject) type;
64 if (gto instanceof RuntimeGeneratedUnion) {
65 return ((RuntimeGeneratedUnion) gto).typePropertyNames();
67 gto = verifyNotNull(gto.getSuperType(), "Cannot find union type information for %s", type);
72 public Object deserialize(final Object input) {
73 for (final UnionValueOptionContext member : typeCodecs) {
74 final Object ret = member.deserializeUnion(input);
80 throw new IllegalArgumentException(String.format("Failed to construct instance of %s for input %s",
85 public Object serialize(final Object input) {
86 for (final UnionValueOptionContext valCtx : typeCodecs) {
87 final Object domValue = valCtx.serialize(input);
88 if (domValue != null) {
92 throw new IllegalStateException("No codec matched value " + input);