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The Drools and jBPM public API which is backwards compatible between releases.
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/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/

package org.drools.impl.adapters;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.drools.definition.process.Connection;
import org.drools.definition.process.NodeContainer;
import org.kie.api.definition.process.Node;

public class NodeAdapter implements org.drools.definition.process.Node {

	public Node delegate;
	
	public NodeAdapter(Node delegate) {
		this.delegate = delegate;
	}

	public Node getDelegate() {
		return delegate;
	}
	
	public long getId() {
		return delegate.getId();
	}

	public String getName() {
		return delegate.getName();
	}

	public Map> getIncomingConnections() {
		return adaptConnectionMap(delegate.getIncomingConnections());
	}

	public Map> getOutgoingConnections() {
		return adaptConnectionMap(delegate.getOutgoingConnections());
	}

	public List getIncomingConnections(String type) {
		return adaptConnectionList(delegate.getIncomingConnections(type));
	}

	public List getOutgoingConnections(String type) {
		return adaptConnectionList(delegate.getOutgoingConnections(type));
	}

	public NodeContainer getNodeContainer() {
		return new NodeContainerAdapter(delegate.getNodeContainer());
	}

	public Map getMetaData() {
		return delegate.getMetaData();
	}

	public Object getMetaData(String name) {
		return delegate.getMetaData().get(name);
	}
	
	private Map> adaptConnectionMap(Map> connections) {
		if (connections == null) {
			return null;
		}
		Map> result = new HashMap>();
		for (Map.Entry> entry: connections.entrySet()) {
			result.put(entry.getKey(), adaptConnectionList(entry.getValue()));
		}
		return result;
	}
	
	private List adaptConnectionList(List connections) {
		if (connections == null) {
			return null;
		}
		List result = new ArrayList(connections.size());
		for (org.kie.api.definition.process.Connection connection: connections) {
			result.add(new ConnectionAdapter(connection));
		}
		return result;
	}

    @Override
    public int hashCode() {
        return delegate.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        return obj instanceof NodeAdapter && delegate.equals(((NodeAdapter)obj).delegate);
    }
}