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

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/*
 * Copyright 2010 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.
 * You may obtain a copy of the License at
 *
 *      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.runtime.rule;

public interface Row {
    /**
     * Get the object that is bound to the given identifier
     * @param identifier
     *     The identifier of the bound object
     * @return
     */
    public Object get(String identifier);
      
    
    /**
     * Return the FactHandle associated with the given identifier
     * @param identifier
     * @return
     */
    public FactHandle getFactHandle(String identifier);

}