/*
 * Copyright (c) 2014 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.Preconditions.checkArgument;

import com.google.common.base.Optional;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.NormalizedNodeContainerBuilder;
import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableMapNodeBuilder;
import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;

final class UnorderedMapModificationStrategy extends AbstractNodeContainerModificationStrategy {
    private final Optional<ModificationApplyOperation> entryStrategy;

    UnorderedMapModificationStrategy(final ListSchemaNode schema, final DataTreeConfiguration treeConfig) {
        super(MapNode.class, treeConfig);
        entryStrategy = Optional.of(new ListEntryModificationStrategy(schema, treeConfig));
    }

    @SuppressWarnings("rawtypes")
    @Override
    protected NormalizedNodeContainerBuilder createBuilder(final NormalizedNode<?, ?> original) {
        checkArgument(original instanceof MapNode);
        return ImmutableMapNodeBuilder.create((MapNode) original);
    }

    @Override
    protected NormalizedNode<?, ?> createEmptyValue(final NormalizedNode<?, ?> original) {
        checkArgument(original instanceof MapNode);
        return ImmutableMapNodeBuilder.create().withNodeIdentifier(((MapNode) original).getIdentifier()).build();
    }

    @Override
    public Optional<ModificationApplyOperation> getChild(final YangInstanceIdentifier.PathArgument identifier) {
        if (identifier instanceof YangInstanceIdentifier.NodeIdentifierWithPredicates) {
            return entryStrategy;
        }
        return Optional.absent();
    }

    @Override
    public String toString() {
        return "UnorderedMapModificationStrategy [entry=" + entryStrategy + "]";
    }
}

@@ -2240,16 +2240,461 @@
 rategy;%0A
+        %7D else if (entryStrategy.isPresent()) %7B%0A            // In case we already are in a MapEntry node(for example DataTree rooted at MapEntry)%0A            // try to retrieve the child that the identifier should be pointing to from our entryStrategy%0A            // if we have one. If the entryStrategy cannot find this child we just return the absent%0A            // we get from it.%0A            return entryStrategy.get().getChild(identifier);%0A
         

Fix list modification with DataTree rooted at MapEntryNode