import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
+import com.google.common.base.Verify;
import java.util.Collection;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+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.ConflictingModificationAppliedException;
}
}
+ protected void recursivelyVerifyStructure(NormalizedNode<?, ?> value) {
+ final NormalizedNodeContainer container = (NormalizedNodeContainer) value;
+ for (final Object child : container.getValue()) {
+ checkArgument(child instanceof NormalizedNode);
+ final NormalizedNode<?, ?> castedChild = (NormalizedNode<?, ?>) child;
+ final Optional<ModificationApplyOperation> childOp = getChild(castedChild.getIdentifier());
+ if (childOp.isPresent()) {
+ childOp.get().recursivelyVerifyStructure(castedChild);
+ } else {
+ throw new SchemaValidationFailedException(
+ String.format("Child %s is not valid child according to schema.", castedChild.getIdentifier()));
+ }
+ }
+ }
+
@Override
protected TreeNode applyWrite(final ModifiedNode modification,
final Optional<TreeNode> currentMeta, final Version version) {
}
@Override
- protected TreeNode applyMerge(final ModifiedNode modification, final TreeNode currentMeta,
- final Version version) {
- // For Node Containers - merge is same as subtree change - we only replace children.
+ protected TreeNode applyMerge(final ModifiedNode modification, final TreeNode currentMeta, final Version version) {
+ /*
+ * The node which we are merging exists. We now need to expand any child operations implied by the value. Once
+ * we do that, ModifiedNode children will look like this node were a TOUCH and we will let applyTouch() do the
+ * heavy lifting of applying the children recursively (either through here or through applyWrite().
+ */
+ final NormalizedNode<?, ?> value = modification.getWrittenValue();
+
+ Verify.verify(value instanceof NormalizedNodeContainer, "Attempted to merge non-container %s", value);
+ @SuppressWarnings({"unchecked", "rawtypes"})
+ final Collection<NormalizedNode<?, ?>> children = ((NormalizedNodeContainer) value).getValue();
+ for (NormalizedNode<?, ?> c : children) {
+ final PathArgument id = c.getIdentifier();
+ modification.modifyChild(id, resolveChildOperation(id).getChildPolicy(), version);
+ }
return applyTouch(modification, currentMeta, version);
}
+ private void mergeChildrenIntoModification(final ModifiedNode modification,
+ final Collection<NormalizedNode<?, ?>> children, final Version version) {
+ for (NormalizedNode<?, ?> c : children) {
+ final ModificationApplyOperation childOp = resolveChildOperation(c.getIdentifier());
+ final ModifiedNode childNode = modification.modifyChild(c.getIdentifier(), childOp.getChildPolicy(), version);
+ childOp.mergeIntoModifiedNode(childNode, c, version);
+ }
+ }
+
+ @Override
+ final void mergeIntoModifiedNode(final ModifiedNode modification, final NormalizedNode<?, ?> value,
+ final Version version) {
+ @SuppressWarnings({ "unchecked", "rawtypes" })
+ final Collection<NormalizedNode<?, ?>> children = ((NormalizedNodeContainer)value).getValue();
+
+ switch (modification.getOperation()) {
+ case NONE:
+ // Fresh node, just record a MERGE with a value
+ recursivelyVerifyStructure(value);
+ modification.updateValue(LogicalOperation.MERGE, value);
+ return;
+ case TOUCH:
+
+ mergeChildrenIntoModification(modification, children, version);
+ // We record empty merge value, since real children merges
+ // are already expanded. This is needed to satisfy non-null for merge
+ // original merge value can not be used since it mean different
+ // order of operation - parent changes are always resolved before
+ // children ones, and having node in TOUCH means children was modified
+ // before.
+ modification.updateValue(LogicalOperation.MERGE, createEmptyValue(value));
+ return;
+ case MERGE:
+ // Merging into an existing node. Merge data children modifications (maybe recursively) and mark as MERGE,
+ // invalidating cached snapshot
+ mergeChildrenIntoModification(modification, children, version);
+ modification.updateOperationType(LogicalOperation.MERGE);
+ return;
+ case DELETE:
+ // Delete performs a data dependency check on existence of the node. Performing a merge on DELETE means we
+ // are really performing a write. One thing that ruins that are any child modifications. If there are any,
+ // we will perform a read() to get the current state of affairs, turn this into into a WRITE and then
+ // append any child entries.
+ if (!modification.getChildren().isEmpty()) {
+ // Version does not matter here as we'll throw it out
+ final Optional<TreeNode> current = apply(modification, modification.getOriginal(), Version.initial());
+ if (current.isPresent()) {
+ modification.updateValue(LogicalOperation.WRITE, current.get().getData());
+ mergeChildrenIntoModification(modification, children, version);
+ return;
+ }
+ }
+
+ modification.updateValue(LogicalOperation.WRITE, value);
+ return;
+ case WRITE:
+ // We are augmenting a previous write. We'll just walk value's children, get the corresponding ModifiedNode
+ // and run recursively on it
+ mergeChildrenIntoModification(modification, children, version);
+ modification.updateOperationType(LogicalOperation.WRITE);
+ return;
+ }
+
+ throw new IllegalArgumentException("Unsupported operation " + modification.getOperation());
+ }
+
+ @SuppressWarnings({"rawtypes", "unchecked"})
+ private NormalizedNode<?, ?> createEmptyValue(NormalizedNode<?, ?> value,
+ Collection<NormalizedNode<?, ?>> children) {
+ NormalizedNodeContainerBuilder builder = createBuilder(value);
+ for (NormalizedNode<?, ?> child : children) {
+ builder.removeChild(child.getIdentifier());
+ }
+ return builder.build();
+ }
+
@Override
protected TreeNode applyTouch(final ModifiedNode modification, final TreeNode currentMeta, final Version version) {
/*
@SuppressWarnings("rawtypes")
protected abstract NormalizedNodeContainerBuilder createBuilder(NormalizedNode<?, ?> original);
+
+ protected abstract NormalizedNode<?, ?> createEmptyValue(NormalizedNode<?, ?> original);
}
Code Review / yangtools.git / blobdiff