briar/briar-api/src/org/briarproject/api/TransportId.java

package org.briarproject.api;

/**
 * Type-safe wrapper for a string that uniquely identifies a transport plugin.
 */
public class TransportId {

	/** The maximum length of transport identifier in UTF-8 bytes. */
	public static int MAX_TRANSPORT_ID_LENGTH = 10;

	private final String id;

	public TransportId(String id) {
		if (id.length() == 0 || id.length() > MAX_TRANSPORT_ID_LENGTH)
			throw new IllegalArgumentException();
		this.id = id;
	}

	public String getString() {
		return id;
	}

	@Override
	public boolean equals(Object o) {
		return o instanceof TransportId && id.equals(((TransportId) o).id);
	}

	@Override
	public int hashCode() {
		return id.hashCode();
	}
}