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Cayenne Object Persistence Framework

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 *  or more contributor license agreements.  See the NOTICE file
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 *  to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.property;

import java.io.Serializable;

/**
 * An accessor of a property value. Abstracts the actual property implementation. E.g. it
 * can be a Field, a pair of get/set methods or a DataObject.
 * 
 * @since 1.2
 * @author Andrus Adamchik
 */
public interface PropertyAccessor extends Serializable {

    /**
     * Returns property name.
     */
    String getName();

    /**
     * Returns a property value of an object without disturbing the object fault status.
     */
    Object readPropertyDirectly(Object object) throws PropertyAccessException;

    /**
     * Sets a property value of an object without disturbing the object fault status. Old
     * value of the property is specified as a hint.
     */
    void writePropertyDirectly(Object object, Object oldValue, Object newValue)
            throws PropertyAccessException;
}