/*
 * 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.binding.data.codec.api;

import java.util.Map.Entry;
import org.opendaylight.yangtools.yang.binding.BindingStreamEventWriter;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;

/**
 *
 * Factory for {@link BindingStreamEventWriter}, which provides stream writers
 * which translates data and delegates calls to
 * {@link NormalizedNodeStreamWriter}.
 *
 */
public interface BindingNormalizedNodeWriterFactory {

    /**
     *
     * Creates a {@link BindingStreamEventWriter} for data tree path which will
     * translate to NormalizedNode model and invoke proper events on supplied
     * {@link NormalizedNodeStreamWriter}.
     * <p>
     * Also provides translation of supplied Instance Identifier to
     * {@link YangInstanceIdentifier} so client code, does not need to translate
     * that separately.
     * <p>
     * If {@link YangInstanceIdentifier} is not needed, please use
     * {@link #newWriter(InstanceIdentifier, NormalizedNodeStreamWriter)}
     * method to conserve resources.
     *
     * @param path
     *            Binding Path in conceptual data tree, for which writer should
     *            be instantiated
     * @param domWriter
     *            Stream writer on which events will be invoked.
     * @return Instance Identifier and {@link BindingStreamEventWriter}
     *         which will write to supplied {@link NormalizedNodeStreamWriter}.
     */
    public Entry<YangInstanceIdentifier, BindingStreamEventWriter> newWriterAndIdentifier(final InstanceIdentifier<?> path,
            final NormalizedNodeStreamWriter domWriter);

    /**
     *
     * Creates a {@link BindingStreamEventWriter} for data tree path which will
     * translate to NormalizedNode model and invoke proper events on supplied
     * {@link NormalizedNodeStreamWriter}.
     * <p>
     *
     * This variation does not provide YANG instance identifier and is useful
     * for use-cases, where {@link InstanceIdentifier} translation is done
     * in other way, or YANG instance identifier is unnecessary (e.g. notifications, RPCs).
     *
     * @param path Binding Path in conceptual data tree, for which writer should
     *            be instantiated
     * @param domWriter Stream writer on which events will be invoked.
     * @return {@link BindingStreamEventWriter}
     *         which will write to supplied {@link NormalizedNodeStreamWriter}.
     */
    public BindingStreamEventWriter newWriter(final InstanceIdentifier<?> path,
            final NormalizedNodeStreamWriter domWriter);

}