+/*
+ * Copyright (c) 2013 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.operations;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.Lists;
+import java.util.List;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListEntryNode;
+import org.opendaylight.yangtools.yang.data.api.schema.UnkeyedListNode;
+import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
+import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.CollectionNodeBuilder;
+import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
+
+public class UnkeyedListNodeModification implements Modification<ListSchemaNode, UnkeyedListNode> {
+
+ public static final MapEntryNodeModification MAP_ENTRY_NODE_MODIFICATION = new MapEntryNodeModification();
+
+ @Override
+ public Optional<UnkeyedListNode> modify(ListSchemaNode schema, Optional<UnkeyedListNode> actual,
+ Optional<UnkeyedListNode> modification, OperationStack operationStack) throws DataModificationException {
+
+ // Merge or None operation on parent, leaving actual if modification not present
+ if (modification.isPresent() == false)
+ return actual;
+
+ List<UnkeyedListEntryNode> resultNodes = Lists.newArrayList();
+ if (actual.isPresent())
+ resultNodes = unkeyedListEntries(actual.get());
+
+ // TODO implement ordering for modification nodes
+
+ for (UnkeyedListEntryNode unkeyedListEntryModification : modification.get().getValue()) {
+
+ operationStack.enteringNode(unkeyedListEntryModification);
+
+ YangInstanceIdentifier.NodeIdentifier entryKey = unkeyedListEntryModification.getIdentifier();
+
+ switch (operationStack.getCurrentOperation()) {
+ case NONE:
+ break;
+ // DataModificationException.DataMissingException.check(schema.getQName(), actual, mapEntryModification);
+ case MERGE:
+ case CREATE: {
+ DataModificationException.DataExistsException.check(schema.getQName(), actual,
+ unkeyedListEntryModification);
+ resultNodes.add(unkeyedListEntryModification);
+ }
+ case REPLACE: {
+ break;
+ }
+ case DELETE: {
+ // DataModificationException.DataMissingException.check(schema.getQName(), actual,
+ // unkeyedListEntryModification);
+ break;
+ }
+ case REMOVE: {
+ break;
+ }
+ default:
+ throw new UnsupportedOperationException(
+ String.format("Unable to perform operation: %s on: %s, unknown",
+ operationStack.getCurrentOperation(), schema));
+ }
+
+ operationStack.exitingNode(unkeyedListEntryModification);
+ }
+ return build(schema, resultNodes);
+ }
+
+ private Optional<UnkeyedListNode> build(ListSchemaNode schema, List<UnkeyedListEntryNode> resultNodes) {
+ if (resultNodes.isEmpty())
+ return Optional.absent();
+
+ CollectionNodeBuilder<UnkeyedListEntryNode, UnkeyedListNode> b = Builders.unkeyedListBuilder();
+ b.withNodeIdentifier(new NodeIdentifier(schema.getQName()));
+
+ for (UnkeyedListEntryNode child : resultNodes) {
+ b.withChild(child);
+ }
+
+ return Optional.of(b.build());
+ }
+
+ private List<UnkeyedListEntryNode> unkeyedListEntries(UnkeyedListNode unkeyedListNode) {
+ List<UnkeyedListEntryNode> unkeyedListEntries = Lists.newArrayList();
+
+ for (UnkeyedListEntryNode unkeyedListEntryNode : unkeyedListNode.getValue()) {
+ unkeyedListEntries.add(unkeyedListEntryNode);
+ }
+
+ return unkeyedListEntries;
+ }
+
+}