+++ /dev/null
-/*
- * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.yangtools.binding.data.codec.impl;
-
-import com.google.common.base.Preconditions;
-import com.google.common.base.Throwables;
-import java.lang.invoke.MethodHandle;
-import java.lang.invoke.MethodHandles;
-import java.lang.invoke.MethodType;
-import java.lang.reflect.Method;
-import org.opendaylight.yangtools.concepts.Codec;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-final class UnionValueOptionContext {
- private static final MethodType OBJECT_TYPE = MethodType.methodType(Object.class, Object.class);
- private static final Logger LOG = LoggerFactory.getLogger(UnionValueOptionContext.class);
-
- private final Class<?> bindingType;
- private final Codec<Object,Object> codec;
- private final MethodHandle getter;
- private final MethodHandle unionCtor;
-
- UnionValueOptionContext(final Class<?> unionType, final Class<?> valueType, final Method getter, final Codec<Object, Object> codec) {
- this.bindingType = Preconditions.checkNotNull(valueType);
- this.codec = Preconditions.checkNotNull(codec);
-
- try {
- this.getter = MethodHandles.publicLookup().unreflect(getter).asType(OBJECT_TYPE);
- } catch (IllegalAccessException e) {
- throw new IllegalStateException("Failed to access method " + getter, e);
- }
-
- try {
- this.unionCtor = MethodHandles.publicLookup().findConstructor(unionType,
- MethodType.methodType(void.class, valueType)).asType(OBJECT_TYPE);
- } catch (IllegalAccessException | NoSuchMethodException e) {
- throw new IllegalStateException(String.format("Failed to access constructor for %s in type %s", valueType,
- unionType), e);
- }
- }
-
- Object serialize(final Object input) {
- final Object baValue = getValueFrom(input);
- return baValue == null ? null : codec.serialize(baValue);
- }
-
- Object deserializeUnion(final Object input) {
- // Side-step potential exceptions by checking the type if it is available
- if (codec instanceof EncapsulatedValueCodec && !((EncapsulatedValueCodec) codec).canAcceptObject(input)) {
- return null;
- }
-
- final Object value;
- try {
- value = codec.deserialize(input);
- } catch (Exception e) {
- LOG.debug("Codec {} failed to deserialize input {}", codec, input, e);
- return null;
- }
-
- try {
- return unionCtor.invokeExact(value);
- } catch (ClassCastException e) {
- // This case can happen. e.g. NOOP_CODEC
- LOG.debug("Failed to instantiate {} for input {} value {}", bindingType, input, value, e);
- return null;
- } catch (Throwable e) {
- throw new IllegalArgumentException("Failed to construct union for value " + value, e);
- }
- }
-
- Object getValueFrom(final Object input) {
- try {
- return getter.invokeExact(input);
- } catch (Throwable e) {
- Throwables.throwIfUnchecked(e);
- throw new RuntimeException(e);
- }
- }
-
- @Override
- public int hashCode() {
- return bindingType.hashCode();
- }
-
- @Override
- public boolean equals(final Object obj) {
- if (this == obj) {
- return true;
- }
- if (!(obj instanceof UnionValueOptionContext)) {
- return false;
- }
-
- final UnionValueOptionContext other = (UnionValueOptionContext) obj;
- return bindingType.equals(other.bindingType);
- }
-}