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This project adds a so called contribution mechanism (like known from Tapestry IOC or Eclipse Plugins) for configuration and extension of services to the Spring project.

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package org.springframework.contributions.util;

/**
 * Interface for an object which can be ordered by the {@link Orderer}.
 * 
 * @author Manfred Hantschel
 */
public interface Orderable
{

	/**
	 * Returns the unique id of the entry. Must not contain ',' and must not start or end with white-spaces.
	 * 
	 * @return the id
	 */
	String getOrderableId();

	/**
	 * The constraints, may be null. The string must contain match following declaration:
	 * 
	 * 	 * declaration = ('before:' | 'after:') reference {',' reference}.
	 * 
	 * 
	 * The reference may contain wildcards like '*' and '?', or, if prefixed and suffixed by '/' a regular expression.
	 * Direct references (without wildcards or regular expressions) are preferred.
	 * 
	 * @return the constraints, may be null
	 */
	String[] getOrderableConstraints();

}