jgit/org.eclipse.jgit/src/org/eclipse/jgit/transport/RefFilter.java

/*
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package org.eclipse.jgit.transport;

import java.util.Map;

import org.eclipse.jgit.lib.Ref;

/**
 * Filters the list of refs that are advertised to the client.
 * <p>
 * The filter is called by {@link ReceivePack} and {@link UploadPack} to ensure
 * that the refs are filtered before they are advertised to the client.
 * <p>
 * This can be used by applications to control visibility of certain refs based
 * on a custom set of rules.
 */
public interface RefFilter {
	/** The default filter, allows all refs to be shown. */
	public static final RefFilter DEFAULT = new RefFilter() {
		public Map<String, Ref> filter (final Map<String, Ref> refs) {
			return refs;
		}
	};

	/**
	 * Filters a {@code Map} of refs before it is advertised to the client.
	 *
	 * @param refs
	 *            the refs which this method need to consider.
	 * @return
	 *            the filtered map of refs.
	 */
	public Map<String, Ref> filter(Map<String, Ref> refs);
}