2 * Copyright (c) 2017 Pantheon Technologies s.r.o. 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
9 package org.opendaylight.mdsal.binding.javav2.dom.codec.impl.value;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.annotations.Beta;
14 import com.google.common.base.Throwables;
15 import java.lang.invoke.MethodHandle;
16 import java.lang.invoke.MethodHandles;
17 import java.lang.invoke.MethodHandles.Lookup;
18 import java.lang.invoke.MethodType;
19 import java.lang.reflect.Method;
20 import java.util.concurrent.Callable;
21 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.value.ValueTypeCodec.SchemaUnawareCodec;
22 import org.opendaylight.yangtools.yang.model.api.TypeDefinition;
23 import org.opendaylight.yangtools.yang.model.api.type.BooleanTypeDefinition;
26 * Derived YANG types are just immutable value holders for simple value
27 * types, which are same as in NormalizedNode model.
30 public final class EncapsulatedValueCodec extends ReflectionBasedCodec implements SchemaUnawareCodec {
32 private static final Lookup LOOKUP = MethodHandles.publicLookup();
33 private static final MethodType OBJ_METHOD = MethodType.methodType(Object.class, Object.class);
34 private final MethodHandle constructor;
35 private final MethodHandle getter;
36 private final Class<?> valueType;
38 private EncapsulatedValueCodec(final Class<?> typeClz, final MethodHandle constructor, final MethodHandle getter,
39 final Class<?> valueType) {
42 this.constructor = requireNonNull(constructor);
43 this.getter = requireNonNull(getter);
44 this.valueType = requireNonNull(valueType);
47 static Callable<EncapsulatedValueCodec> loader(final Class<?> typeClz, final TypeDefinition<?> typeDef) {
50 if (typeDef instanceof BooleanTypeDefinition) {
51 m = typeClz.getMethod("isValue");
53 m = typeClz.getMethod("getValue");
55 final MethodHandle getter = LOOKUP.unreflect(m).asType(OBJ_METHOD);
56 final Class<?> valueType = m.getReturnType();
58 final MethodHandle constructor = LOOKUP.findConstructor(typeClz,
59 MethodType.methodType(void.class, valueType)).asType(OBJ_METHOD);
60 return new EncapsulatedValueCodec(typeClz, constructor, getter, valueType);
65 * Quick check if a value object has a chance to deserialize using {@link #deserialize(Object)}.
67 * @param value Value to be checked
68 * @return True if the value can be encapsulated
70 public boolean canAcceptObject(final Object value) {
71 return valueType.isInstance(value);
75 @SuppressWarnings("checkstyle:illegalCatch")
76 public Object deserialize(final Object input) {
78 return constructor.invokeExact(input);
79 } catch (final Throwable e) {
80 throw Throwables.propagate(e);
85 @SuppressWarnings("checkstyle:illegalCatch")
86 public Object serialize(final Object input) {
88 return getter.invokeExact(input);
89 } catch (final Throwable e) {
90 throw Throwables.propagate(e);