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The Drools and jBPM public API which is backwards compatible between releases.

There is a newer version: 6.5.0.Final

package org.drools.impl.adapters;

import org.kie.api.definition.rule.Rule;

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

import static org.drools.impl.adapters.AdapterUtil.adaptKnowledgeType;

public class RuleAdapter implements org.drools.definition.rule.Rule {

    private final Rule delegate;

    public RuleAdapter(Rule delegate) {
        this.delegate = delegate;
    }

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

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

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

    public Collection listMetaAttributes() {
        throw new UnsupportedOperationException("This operation is no longer supported");
    }

    public Map getMetaAttributes() {
        throw new UnsupportedOperationException("This operation is no longer supported");
   }

    public String getMetaAttribute(String key) {
        return delegate.getPackageName();
    }

    public KnowledgeType getKnowledgeType() {
        return adaptKnowledgeType(delegate.getKnowledgeType());
    }

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

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

    public static List adaptRules(Collection rules) {
        List result = new ArrayList();
        for (org.kie.api.definition.rule.Rule rule : rules) {
            result.add(new RuleAdapter(rule));
        }
        return result;
    }

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

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