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Holmes is a library that provides a simple and fluent API for writing business rules validations on Java projects.

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package org.holmes;

/**
 * An evaluator is the last piece in the validation chain. Evaluating a target
 * instance by some specific logic is it's responsibility.
 * 
 * @author diegossilveira
 * 
 * @param 
 *            the type evaluated by this Evaluator.
 */
public interface Evaluator {

	/**
	 * Used to set the {@link Joint} on this Evaluator.
	 * 
	 * @param joint
	 */
	void setJoint(Joint joint);

	/**
	 * Evaluates the target by specific logic.
	 * 
	 * @return true if the target conforms to the logic,
	 *         false otherwise.
	 */
	boolean evaluate();

}