/*
* Copyright (c) 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.util;
import static com.google.common.base.Verify.verify;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.jdt.annotation.NonNull;
import org.opendaylight.yangtools.rfc7952.data.api.StreamWriterMetadataExtension;
import org.opendaylight.yangtools.util.ImmutableMapTemplate;
import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
/**
* Utility class used for tracking parser state as needed by a StAX-like parser.
* This class is to be used only by respective XML and JSON parsers in yang-data-codec-xml and yang-data-codec-gson.
*
*
* Represents a YANG list entry node.
*/
public abstract class ListEntryNodeDataWithSchema extends AbstractMountPointDataWithSchema {
private static final class Keyed extends ListEntryNodeDataWithSchema {
private final Map> keyValues = new HashMap<>();
// This template results in Maps in schema definition order
private final ImmutableMapTemplate predicateTemplate;
Keyed(final ListSchemaNode schema, final List keyDef) {
super(schema);
predicateTemplate = ImmutableMapTemplate.ordered(keyDef);
}
@Override
void addChild(final AbstractNodeDataWithSchema> newChild) {
final DataSchemaNode childSchema = newChild.getSchema();
if (childSchema instanceof LeafSchemaNode) {
final QName childName = childSchema.getQName();
if (predicateTemplate.keySet().contains(childName)) {
verify(newChild instanceof SimpleNodeDataWithSchema);
keyValues.put(childName, (SimpleNodeDataWithSchema>)newChild);
}
}
super.addChild(newChild);
}
@Override
public void write(final NormalizedNodeStreamWriter writer, final StreamWriterMetadataExtension metaWriter)
throws IOException {
writer.nextDataSchemaNode(getSchema());
final NodeIdentifierWithPredicates identifier = NodeIdentifierWithPredicates.of(getSchema().getQName(),
predicateTemplate.instantiateTransformed(keyValues, (key, node) -> node.getValue()));
writer.startMapEntryNode(identifier, childSizeHint());
writeMetadata(metaWriter);
super.write(writer, metaWriter);
writer.endNode();
}
}
private static final class Unkeyed extends ListEntryNodeDataWithSchema {
Unkeyed(final ListSchemaNode schema) {
super(schema);
}
@Override
public void write(final NormalizedNodeStreamWriter writer, final StreamWriterMetadataExtension metaWriter)
throws IOException {
writer.nextDataSchemaNode(getSchema());
writer.startUnkeyedListItem(provideNodeIdentifier(), childSizeHint());
super.write(writer, metaWriter);
writer.endNode();
}
}
ListEntryNodeDataWithSchema(final ListSchemaNode schema) {
super(schema);
}
static @NonNull ListEntryNodeDataWithSchema forSchema(final ListSchemaNode schema) {
final List keyDef = schema.getKeyDefinition();
return keyDef.isEmpty() ? new Unkeyed(schema) : new Keyed(schema, keyDef);
}
}