/*
- * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
+ * 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 com.google.common.base.Function;
-import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
-import com.google.common.base.Verify;
+
+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 javax.annotation.Nonnull;
-import javax.annotation.Nullable;
+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.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodeContainer;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNodes;
import org.opendaylight.yangtools.yang.data.api.schema.tree.ModificationType;
import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.TreeNode;
-
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) {
+ protected AbstractModifiedNodeBasedCandidateNode(final ModifiedNode mod, final TreeNode oldMeta,
+ final TreeNode newMeta) {
this.newMeta = newMeta;
this.oldMeta = oldMeta;
- this.mod = Preconditions.checkNotNull(mod);
+ this.mod = requireNonNull(mod);
}
protected final ModifiedNode getMod() {
return oldMeta;
}
- private static final TreeNode childMeta(final TreeNode parent, final PathArgument id) {
- if (parent != null) {
- return parent.getChild(id).orNull();
- } else {
- return null;
+ private static TreeNode childMeta(final TreeNode parent, final PathArgument id) {
+ return parent == null ? null : parent.getChild(id).orElse(null);
+ }
+
+ 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;
}
- private DataTreeCandidateNode childNode(final ModifiedNode input) {
- final PathArgument id = input.getIdentifier();
- return createChildNode(input, childMeta(oldMeta, id), childMeta(newMeta, id));
+ @SuppressWarnings("unchecked")
+ private static NormalizedNodeContainer<?, PathArgument, NormalizedNode<?, ?>> getContainer(
+ final @Nullable TreeNode meta) {
+ return meta == null ? null : (NormalizedNodeContainer<?, PathArgument, NormalizedNode<?, ?>>)meta.getData();
}
- private static DataTreeCandidateNode createChildNode(@Nonnull final ModifiedNode input, @Nullable final TreeNode oldMeta, @Nullable final TreeNode newMeta) {
- if(oldMeta == null) {
- return RecursiveModificationCandidateNode.initialWriteNode(newMeta.getData());
- }
- if(newMeta == null) {
- return RecursiveModificationCandidateNode.deleteNode(oldMeta.getData());
- }
- return new ChildNode(input, oldMeta, newMeta);
+ 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() {
- return Collections2.transform(mod.getChildren(), new Function<ModifiedNode, DataTreeCandidateNode>() {
- @Override
- public DataTreeCandidateNode apply(final ModifiedNode input) {
- return childNode(input);
- }
- });
+ 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).getValue(),
+ 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 Verify.verifyNotNull(mod.getModificationType(), "Node %s does not have resolved modification type", mod);
+ return verifyNotNull(mod.getModificationType(), "Node %s does not have resolved modification type", mod);
}
- private Optional<NormalizedNode<?, ?>> optionalData(final TreeNode meta) {
- if (meta != null) {
- return Optional.<NormalizedNode<?,?>>of(meta.getData());
- } else {
- return Optional.absent();
- }
+ private static @NonNull Optional<NormalizedNode<?, ?>> optionalData(final TreeNode meta) {
+ return meta == null ? Optional.empty() : Optional.of(meta.getData());
}
@Override
- public Optional<NormalizedNode<?, ?>> getDataAfter() {
+ public final Optional<NormalizedNode<?, ?>> getDataAfter() {
return optionalData(newMeta);
}
@Override
- public Optional<NormalizedNode<?, ?>> getDataBefore() {
+ public final Optional<NormalizedNode<?, ?>> getDataBefore() {
return optionalData(oldMeta);
}
@Override
- public DataTreeCandidateNode getModifiedChild(final PathArgument identifier) {
- final Optional<ModifiedNode> childMod = mod.getChild(identifier);
- if (childMod.isPresent()) {
- return childNode(childMod.get());
+ public final Optional<DataTreeCandidateNode> getModifiedChild(final PathArgument identifier) {
+ switch (mod.getModificationType()) {
+ case APPEARED:
+ case DISAPPEARED:
+ case SUBTREE_MODIFIED:
+ return mod.getChild(identifier).map(this::childNode);
+ case UNMODIFIED:
+ if (!canHaveChildren(oldMeta, newMeta)) {
+ return Optional.empty();
+ }
+ return getContainer(newMeta != null ? newMeta : oldMeta).getChild(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());
}
- return null;
}
- static final class ChildNode extends AbstractModifiedNodeBasedCandidateNode {
- public ChildNode(final ModifiedNode mod, final TreeNode oldMeta, final TreeNode newMeta) {
+ private static final class ChildNode extends AbstractModifiedNodeBasedCandidateNode {
+ ChildNode(final ModifiedNode mod, final TreeNode oldMeta, final TreeNode newMeta) {
super(mod, oldMeta, newMeta);
}
return getMod().getIdentifier();
}
}
-}
\ No newline at end of file
+
+ @Override
+ public String toString() {
+ return this.getClass().getSimpleName() + "{mod = " + this.mod + ", oldMeta = " + this.oldMeta + ", newMeta = "
+ + this.newMeta + "}";
+ }
+}
Code Review / yangtools.git / blobdiff