+++ /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.MoreObjects;
-import com.google.common.base.MoreObjects.ToStringHelper;
-import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
-import com.google.common.collect.ImmutableMap;
-import java.lang.reflect.InvocationHandler;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.lang.reflect.Proxy;
-import java.util.Map;
-import java.util.Objects;
-import java.util.concurrent.ConcurrentHashMap;
-import org.opendaylight.yangtools.binding.data.codec.util.AugmentationReader;
-import org.opendaylight.yangtools.yang.binding.Augmentable;
-import org.opendaylight.yangtools.yang.binding.Augmentation;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodeContainer;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-class LazyDataObject<D extends DataObject> implements InvocationHandler, AugmentationReader {
-
- private static final Logger LOG = LoggerFactory.getLogger(LazyDataObject.class);
- private static final String GET_IMPLEMENTED_INTERFACE = "getImplementedInterface";
- private static final String TO_STRING = "toString";
- private static final String EQUALS = "equals";
- private static final String GET_AUGMENTATION = "getAugmentation";
- private static final String HASHCODE = "hashCode";
- private static final String AUGMENTATIONS = "augmentations";
- private static final Object NULL_VALUE = new Object();
-
- private final ConcurrentHashMap<Method, Object> cachedData = new ConcurrentHashMap<>();
- private final NormalizedNodeContainer<?, PathArgument, NormalizedNode<?, ?>> data;
- private final DataObjectCodecContext<D,?> context;
-
- private volatile ImmutableMap<Class<? extends Augmentation<?>>, Augmentation<?>> cachedAugmentations = null;
- private volatile Integer cachedHashcode = null;
-
- @SuppressWarnings({ "rawtypes", "unchecked" })
- LazyDataObject(final DataObjectCodecContext<D,?> ctx, final NormalizedNodeContainer data) {
- this.context = Preconditions.checkNotNull(ctx, "Context must not be null");
- this.data = Preconditions.checkNotNull(data, "Data must not be null");
- }
-
- @Override
- public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable {
- if (method.getParameterTypes().length == 0) {
- final String name = method.getName();
- if (GET_IMPLEMENTED_INTERFACE.equals(name)) {
- return context.getBindingClass();
- } else if (TO_STRING.equals(name)) {
- return bindingToString();
- } else if (HASHCODE.equals(name)) {
- return bindingHashCode();
- } else if (AUGMENTATIONS.equals(name)) {
- return getAugmentationsImpl();
- }
- return getBindingData(method);
- } else if (GET_AUGMENTATION.equals(method.getName())) {
- return getAugmentationImpl((Class<?>) args[0]);
- } else if (EQUALS.equals(method.getName())) {
- return bindingEquals(args[0]);
- }
- throw new UnsupportedOperationException("Unsupported method " + method);
- }
-
- private boolean bindingEquals(final Object other) {
- if (other == null) {
- return false;
- }
- if (!context.getBindingClass().isAssignableFrom(other.getClass())) {
- return false;
- }
- try {
- for (final Method m : context.getHashCodeAndEqualsMethods()) {
- final Object thisValue = getBindingData(m);
- final Object otherValue = m.invoke(other);
- if(!Objects.equals(thisValue, otherValue)) {
- return false;
- }
- }
- } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
- LOG.warn("Can not determine equality of {} and {}", this, other, e);
- return false;
- }
- return true;
- }
-
- private Integer bindingHashCode() {
- final Integer ret = cachedHashcode;
- if (ret != null) {
- return ret;
- }
-
- final int prime = 31;
- int result = 1;
- for (final Method m : context.getHashCodeAndEqualsMethods()) {
- final Object value = getBindingData(m);
- result = prime * result + ((value == null) ? 0 : value.hashCode());
- }
- if (Augmentable.class.isAssignableFrom(context.getBindingClass())) {
- result = prime * result + (getAugmentationsImpl().hashCode());
- }
- cachedHashcode = result;
- return result;
- }
-
- private Object getBindingData(final Method method) {
- Object cached = cachedData.get(method);
- if (cached == null) {
- final Object readedValue = context.getBindingChildValue(method, data);
- if (readedValue == null) {
- cached = NULL_VALUE;
- } else {
- cached = readedValue;
- }
- cachedData.putIfAbsent(method, cached);
- }
-
- return cached == NULL_VALUE ? null : cached;
- }
-
- private Map<Class<? extends Augmentation<?>>, Augmentation<?>> getAugmentationsImpl() {
- ImmutableMap<Class<? extends Augmentation<?>>, Augmentation<?>> ret = cachedAugmentations;
- if (ret == null) {
- synchronized (this) {
- ret = cachedAugmentations;
- if (ret == null) {
- ret = ImmutableMap.copyOf(context.getAllAugmentationsFrom(data));
- cachedAugmentations = ret;
- }
- }
- }
-
- return ret;
- }
-
- @Override
- public Map<Class<? extends Augmentation<?>>, Augmentation<?>> getAugmentations(final Object obj) {
- Preconditions.checkArgument(this == Proxy.getInvocationHandler(obj),
- "Supplied object is not associated with this proxy handler");
-
- return getAugmentationsImpl();
- }
-
- private Object getAugmentationImpl(final Class<?> cls) {
- final ImmutableMap<Class<? extends Augmentation<?>>, Augmentation<?>> aug = cachedAugmentations;
- if (aug != null) {
- return aug.get(cls);
- }
- Preconditions.checkNotNull(cls,"Supplied augmentation must not be null.");
-
- @SuppressWarnings({"unchecked","rawtypes"})
- final Optional<DataContainerCodecContext<?,?>> augCtx= context.possibleStreamChild((Class) cls);
- if(augCtx.isPresent()) {
- final Optional<NormalizedNode<?, ?>> augData = data.getChild(augCtx.get().getDomPathArgument());
- if (augData.isPresent()) {
- return augCtx.get().deserialize(augData.get());
- }
- }
- return null;
- }
-
- public String bindingToString() {
- final ToStringHelper helper = MoreObjects.toStringHelper(context.getBindingClass()).omitNullValues();
-
- for (final Method m :context.getHashCodeAndEqualsMethods()) {
- helper.add(m.getName(), getBindingData(m));
- }
- if (Augmentable.class.isAssignableFrom(context.getBindingClass())) {
- helper.add("augmentations", getAugmentationsImpl());
- }
- return helper.toString();
- }
-
- @Override
- public int hashCode() {
- final int prime = 31;
- int result = 1;
- result = prime * result + context.hashCode();
- result = prime * result + data.hashCode();
- return result;
- }
-
- @Override
- public boolean equals(final Object obj) {
- if (this == obj) {
- return true;
- }
- if (obj == null) {
- return false;
- }
- if (getClass() != obj.getClass()) {
- return false;
- }
- final LazyDataObject<?> other = (LazyDataObject<?>) obj;
- if (context == null) {
- if (other.context != null) {
- return false;
- }
- } else if (!context.equals(other.context)) {
- return false;
- }
- if (data == null) {
- if (other.data != null) {
- return false;
- }
- } else if (!data.equals(other.data)) {
- return false;
- }
- return true;
- }
-}
Code Review / yangtools.git / blobdiff