+++ /dev/null
-/*
- * Copyright (c) 2015, 2016 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.yang.data.impl.schema.tree;
-
-import static com.google.common.base.Verify.verifyNotNull;
-import static java.util.Objects.requireNonNull;
-
-import com.google.common.collect.Collections2;
-import com.google.common.collect.ImmutableList;
-import java.util.Collection;
-import java.util.Optional;
-import org.eclipse.jdt.annotation.NonNull;
-import org.eclipse.jdt.annotation.Nullable;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
-import org.opendaylight.yangtools.yang.data.api.schema.DistinctNodeContainer;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodeContainer;
-import org.opendaylight.yangtools.yang.data.spi.tree.TreeNode;
-import org.opendaylight.yangtools.yang.data.tree.api.DataTreeCandidateNode;
-import org.opendaylight.yangtools.yang.data.tree.api.ModificationType;
-import org.opendaylight.yangtools.yang.data.tree.spi.DataTreeCandidateNodes;
-
-abstract class AbstractModifiedNodeBasedCandidateNode implements DataTreeCandidateNode {
- private final ModifiedNode mod;
- private final TreeNode newMeta;
- private final TreeNode oldMeta;
-
- protected AbstractModifiedNodeBasedCandidateNode(final ModifiedNode mod, final TreeNode oldMeta,
- final TreeNode newMeta) {
- this.newMeta = newMeta;
- this.oldMeta = oldMeta;
- this.mod = requireNonNull(mod);
- }
-
- protected final ModifiedNode getMod() {
- return mod;
- }
-
- protected final TreeNode getNewMeta() {
- return newMeta;
- }
-
- protected final TreeNode getOldMeta() {
- return oldMeta;
- }
-
- private static TreeNode childMeta(final TreeNode parent, final PathArgument id) {
- return parent == null ? null : parent.childByArg(id);
- }
-
- private static boolean canHaveChildren(final @Nullable TreeNode oldMeta, final @Nullable TreeNode newMeta) {
- if (oldMeta != null) {
- return oldMeta.getData() instanceof NormalizedNodeContainer;
- }
- if (newMeta != null) {
- return newMeta.getData() instanceof NormalizedNodeContainer;
- }
- return false;
- }
-
- @SuppressWarnings("unchecked")
- private static DistinctNodeContainer<PathArgument, NormalizedNode> getContainer(
- final @Nullable TreeNode meta) {
- return meta == null ? null : (DistinctNodeContainer<PathArgument, NormalizedNode>)meta.getData();
- }
-
- private ChildNode childNode(final ModifiedNode childMod) {
- final PathArgument id = childMod.getIdentifier();
- return new ChildNode(childMod, childMeta(oldMeta, id), childMeta(newMeta, id));
- }
-
- @Override
- public Collection<DataTreeCandidateNode> getChildNodes() {
- switch (mod.getModificationType()) {
- case APPEARED:
- case DISAPPEARED:
- case SUBTREE_MODIFIED:
- return Collections2.transform(mod.getChildren(), this::childNode);
- case UNMODIFIED:
- // Unmodified node, but we still need to resolve potential children. canHaveChildren returns
- // false if both arguments are null.
- if (!canHaveChildren(oldMeta, newMeta)) {
- return ImmutableList.of();
- }
-
- return Collections2.transform(getContainer(newMeta != null ? newMeta : oldMeta).body(),
- DataTreeCandidateNodes::unmodified);
- case DELETE:
- case WRITE:
- // This is unusual, the user is requesting we follow into an otherwise-terminal node.
- // We need to fudge things based on before/after data to correctly fake the expectations.
- if (!canHaveChildren(oldMeta, newMeta)) {
- return ImmutableList.of();
- }
- return DataTreeCandidateNodes.containerDelta(getContainer(oldMeta), getContainer(newMeta));
- default:
- throw new IllegalArgumentException("Unhandled modification type " + mod.getModificationType());
- }
- }
-
- @Override
- public ModificationType getModificationType() {
- return verifyNotNull(mod.getModificationType(), "Node %s does not have resolved modification type", mod);
- }
-
- private static @NonNull Optional<NormalizedNode> optionalData(final TreeNode meta) {
- return meta == null ? Optional.empty() : Optional.of(meta.getData());
- }
-
- @Override
- public final Optional<NormalizedNode> getDataAfter() {
- return optionalData(newMeta);
- }
-
- @Override
- public final Optional<NormalizedNode> getDataBefore() {
- return optionalData(oldMeta);
- }
-
- @Override
- public final Optional<DataTreeCandidateNode> getModifiedChild(final PathArgument identifier) {
- switch (mod.getModificationType()) {
- case APPEARED:
- case DISAPPEARED:
- case SUBTREE_MODIFIED:
- final ModifiedNode child = mod.childByArg(identifier);
- return child == null ? Optional.empty() : Optional.of(childNode(child));
- case UNMODIFIED:
- if (!canHaveChildren(oldMeta, newMeta)) {
- return Optional.empty();
- }
- return getContainer(newMeta != null ? newMeta : oldMeta).findChildByArg(identifier)
- .map(DataTreeCandidateNodes::unmodified);
- case DELETE:
- case WRITE:
- if (!canHaveChildren(oldMeta, newMeta)) {
- return Optional.empty();
- }
- return DataTreeCandidateNodes.containerDelta(getContainer(oldMeta), getContainer(newMeta), identifier);
- default:
- throw new IllegalArgumentException("Unhandled modification type " + mod.getModificationType());
- }
- }
-
- private static final class ChildNode extends AbstractModifiedNodeBasedCandidateNode {
- ChildNode(final ModifiedNode mod, final TreeNode oldMeta, final TreeNode newMeta) {
- super(mod, oldMeta, newMeta);
- }
-
- @Override
- public PathArgument getIdentifier() {
- return getMod().getIdentifier();
- }
- }
-
- @Override
- public String toString() {
- return this.getClass().getSimpleName() + "{mod = " + this.mod + ", oldMeta = " + this.oldMeta + ", newMeta = "
- + this.newMeta + "}";
- }
-}
Code Review / yangtools.git / blobdiff