+++ /dev/null
-/*
- * Copyright (c) 2017 Pantheon Technologies s.r.o. 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.mdsal.binding.javav2.dom.codec.modification;
-
-import static java.util.Objects.requireNonNull;
-
-import com.google.common.annotations.Beta;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Optional;
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-import org.opendaylight.mdsal.binding.javav2.api.TreeNodeModification;
-import org.opendaylight.mdsal.binding.javav2.dom.codec.api.BindingTreeNodeCodec;
-import org.opendaylight.mdsal.binding.javav2.spec.base.IdentifiableItem;
-import org.opendaylight.mdsal.binding.javav2.spec.base.Item;
-import org.opendaylight.mdsal.binding.javav2.spec.base.TreeArgument;
-import org.opendaylight.mdsal.binding.javav2.spec.base.TreeNode;
-import org.opendaylight.mdsal.binding.javav2.spec.structural.Augmentation;
-import org.opendaylight.mdsal.binding.javav2.spec.structural.TreeChildNode;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * Lazily translated {@link TreeNodeModification} based on {@link DataTreeCandidateNode}.
- *
- * <p>
- * {@link LazyTreeNodeModification} represents Data tree change event, but whole tree is not translated or
- * resolved eagerly, but only child nodes which are directly accessed by user of tree node modification.
- *
- * @param <T>
- * Type of Binding Tree Node
- */
-@Beta
-final class LazyTreeNodeModification<T extends TreeNode> implements TreeNodeModification<T> {
-
- private static final Logger LOG = LoggerFactory.getLogger(LazyTreeNodeModification.class);
-
- private final BindingTreeNodeCodec<T> codec;
- private final DataTreeCandidateNode domData;
- private final TreeArgument<?> identifier;
- private Collection<TreeNodeModification<? extends TreeNode>> childNodesCache;
-
- private LazyTreeNodeModification(final BindingTreeNodeCodec<T> codec, final DataTreeCandidateNode domData) {
- this.codec = requireNonNull(codec);
- this.domData = requireNonNull(domData);
- this.identifier = codec.deserializePathArgument(domData.getIdentifier());
- }
-
- static <T extends TreeNode> TreeNodeModification<T> create(final BindingTreeNodeCodec<T> codec,
- final DataTreeCandidateNode domData) {
- return new LazyTreeNodeModification<>(codec, domData);
- }
-
- private static Collection<TreeNodeModification<? extends TreeNode>> from(final BindingTreeNodeCodec<?> parentCodec,
- final Collection<DataTreeCandidateNode> domChildNodes) {
- final List<TreeNodeModification<? extends TreeNode>> result = new ArrayList<>(domChildNodes.size());
- populateList(result, parentCodec, domChildNodes);
- return result;
- }
-
- private static void populateList(final List<TreeNodeModification<? extends TreeNode>> result,
- final BindingTreeNodeCodec<?> parentCodec, final Collection<DataTreeCandidateNode> domChildNodes) {
- for (final DataTreeCandidateNode domChildNode : domChildNodes) {
- final BindingStructuralType type = BindingStructuralType.from(domChildNode);
- if (type != BindingStructuralType.NOT_ADDRESSABLE) {
- /*
- * Even if type is UNKNOWN, from perspective of BindingStructuralType we try to load codec for
- * it. We will use that type to further specify debug log.
- */
- try {
- final BindingTreeNodeCodec<?> childCodec =
- parentCodec.yangPathArgumentChild(domChildNode.getIdentifier());
- populateList(result, type, childCodec, domChildNode);
- } catch (final IllegalArgumentException e) {
- if (type == BindingStructuralType.UNKNOWN) {
- LOG.debug("Unable to deserialize unknown DOM node {}", domChildNode, e);
- } else {
- LOG.debug("Binding representation for DOM node {} was not found", domChildNode, e);
- }
- }
- }
- }
- }
-
- private static void populateList(final List<TreeNodeModification<? extends TreeNode>> result,
- final BindingStructuralType type, final BindingTreeNodeCodec<?> childCodec,
- final DataTreeCandidateNode domChildNode) {
- switch (type) {
- case INVISIBLE_LIST:
- // We use parent codec intentionally.
- populateListWithSingleCodec(result, childCodec, domChildNode.getChildNodes());
- break;
- case INVISIBLE_CONTAINER:
- populateList(result, childCodec, domChildNode.getChildNodes());
- break;
- case UNKNOWN:
- case VISIBLE_CONTAINER:
- result.add(create(childCodec, domChildNode));
- break;
- default:
- }
- }
-
- private static void populateListWithSingleCodec(final List<TreeNodeModification<? extends TreeNode>> result,
- final BindingTreeNodeCodec<?> codec, final Collection<DataTreeCandidateNode> childNodes) {
- for (final DataTreeCandidateNode child : childNodes) {
- result.add(create(codec, child));
- }
- }
-
- @Nullable
- @Override
- public T getDataBefore() {
- return deserialize(domData.getDataBefore());
- }
-
- @Nullable
- @Override
- public T getDataAfter() {
- return deserialize(domData.getDataAfter());
- }
-
- @Nonnull
- @Override
- public Class<T> getDataType() {
- return codec.getBindingClass();
- }
-
- @Nonnull
- @Override
- public TreeArgument<?> getIdentifier() {
- return identifier;
- }
-
- @Nonnull
- @Override
- public TreeNodeModification.ModificationType getModificationType() {
- switch (domData.getModificationType()) {
- case APPEARED:
- case WRITE:
- return TreeNodeModification.ModificationType.WRITE;
- case SUBTREE_MODIFIED:
- return TreeNodeModification.ModificationType.SUBTREE_MODIFIED;
- case DISAPPEARED:
- case DELETE:
- return TreeNodeModification.ModificationType.DELETE;
-
- default:
- // TODO: Should we lie about modification type instead of exception?
- throw new IllegalStateException("Unsupported DOM Modification type " + domData.getModificationType());
- }
- }
-
- @Nonnull
- @Override
- public Collection<TreeNodeModification<? extends TreeNode>> getModifiedChildren() {
- if (childNodesCache == null) {
- childNodesCache = from(codec, domData.getChildNodes());
- }
- return childNodesCache;
- }
-
- @SuppressWarnings("unchecked")
- @Override
- public <C extends TreeChildNode<? super T, ?>> Collection<TreeNodeModification<C>>
- getModifiedChildren(@Nonnull final Class<C> childType) {
- final List<TreeNodeModification<C>> children = new ArrayList<>();
- for (final TreeNodeModification<? extends TreeNode> potential : getModifiedChildren()) {
- if (childType.isAssignableFrom(potential.getDataType())) {
- children.add((TreeNodeModification<C>) potential);
- }
- }
- return children;
- }
-
- @SuppressWarnings("rawtypes")
- @Nullable
- @Override
- public TreeNodeModification<? extends TreeNode> getModifiedChild(final TreeArgument childArgument) {
- final List<YangInstanceIdentifier.PathArgument> domArgumentList = new ArrayList<>();
- final BindingTreeNodeCodec<?> childCodec = codec.bindingPathArgumentChild(childArgument, domArgumentList);
- final Iterator<YangInstanceIdentifier.PathArgument> toEnter = domArgumentList.iterator();
- DataTreeCandidateNode current = domData;
- while (toEnter.hasNext() && current != null) {
- current = current.getModifiedChild(toEnter.next());
- }
- if (current != null) {
- return create(childCodec, current);
- }
- return null;
- }
-
- @SuppressWarnings({ "unchecked", "rawtypes" })
- @Override
- public <C extends IdentifiableItem<T, K> & TreeChildNode<? super T, ?>, K extends IdentifiableItem<T, K>>
- TreeNodeModification<C>
- getModifiedChildListItem(@Nonnull final Class<C> listItem, @Nonnull final K listKey) {
- return (TreeNodeModification) getModifiedChild(new IdentifiableItem(listItem, listKey));
- }
-
- @SuppressWarnings({ "unchecked", "rawtypes" })
- @Nullable
- @Override
- public <C extends TreeChildNode<? super T, ?>> TreeNodeModification<C>
- getModifiedChildContainer(@Nonnull final Class<C> child) {
- return (TreeNodeModification<C>) getModifiedChild(new Item(child));
- }
-
- @SuppressWarnings({ "unchecked", "rawtypes" })
- @Nullable
- @Override
- public <C extends Augmentation<T> & TreeNode> TreeNodeModification<C>
- getModifiedAugmentation(@Nonnull final Class<C> augmentation) {
- return (TreeNodeModification<C>) getModifiedChild(new Item(augmentation));
- }
-
- private T deserialize(final Optional<NormalizedNode<?, ?>> dataAfter) {
- if (dataAfter.isPresent()) {
- return codec.deserialize(dataAfter.get());
- }
- return null;
- }
-}
-
Code Review / mdsal.git / blobdiff