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Core code for the Protege ontology editor. Serves as the basis for the Protege-Frames and Protege-OWL editors.

There is a newer version: 3.5.1

package edu.stanford.smi.protege.util;

/**
 * An interface that encapsulates the logic that decides if a particular object is "valid" in some context.  If the
 * object is invalid then an error message is supplied.
 *
 * @author Ray Fergerson 
 */
public interface Validator {

    String getErrorMessage(Object o);

    boolean isValid(Object o);
}