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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;

import org.holmes.collector.EagerResultCollector;
import org.holmes.collector.GreedyResultCollector;
import org.holmes.collector.SilentResultCollector;

/**
 * Represents the operation modes supported by the {@link HolmesEngine}
 * 
 * @author diegossilveira
 */
public enum OperationMode {

	/**
	 * In GREEDY mode, HolmesEngine will evaluate all rules, collecting the
	 * violations, before throwing an exception.
	 */
	GREEDY {

		@Override
		public ResultCollector getResultCollector() {

			return new GreedyResultCollector();
		}
	},

	/**
	 * In EAGER mode, HolmesEngine will evaluate all rules and stop at the first
	 * violation occurred, throwing an exception immediately.
	 */
	EAGER {

		@Override
		public ResultCollector getResultCollector() {

			return new EagerResultCollector();
		}
	},

	/**
	 * In SILENT mode, HolmesEngine will evaluate all rules, collecting the
	 * violations. No ValidationException is thrown.
	 */
	SILENT {

		@Override
		public ResultCollector getResultCollector() {

			return new SilentResultCollector();
		}
	};

	public abstract ResultCollector getResultCollector();

}