- /*
- * @(#)URISyntax.java 1.6 04/01/07
- *
- * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
-
- package javax.print.attribute;
-
- import java.io.Serializable;
- import java.net.URI;
- import java.net.URISyntaxException;
-
- /**
- * Class URISyntax is an abstract base class providing the common
- * implementation of all attributes whose value is a Uniform Resource
- * Identifier (URI). Once constructed, a URI attribute's value is immutable.
- * <P>
- *
- * @author Alan Kaminsky
- */
- public abstract class URISyntax implements Serializable, Cloneable {
-
- private static final long serialVersionUID = -7842661210486401678L;
-
- /**
- * URI value of this URI attribute.
- * @serial
- */
- private URI uri;
-
- /**
- * Constructs a URI attribute with the specified URI.
- *
- * @param uri URI.
- *
- * @exception NullPointerException
- * (unchecked exception) Thrown if <CODE>uri</CODE> is null.
- */
- protected URISyntax(URI uri) {
- this.uri = verify (uri);
- }
-
- private static URI verify(URI uri) {
- if (uri == null) {
- throw new NullPointerException(" uri is null");
- }
- return uri;
- }
-
- /**
- * Returns this URI attribute's URI value.
- * @return the URI.
- */
- public URI getURI() {
- return uri;
- }
-
- /**
- * Returns a hashcode for this URI attribute.
- *
- * @return A hashcode value for this object.
- */
- public int hashCode() {
- return uri.hashCode();
- }
-
- /**
- * Returns whether this URI attribute is equivalent to the passed in
- * object.
- * To be equivalent, all of the following conditions must be true:
- * <OL TYPE=1>
- * <LI>
- * <CODE>object</CODE> is not null.
- * <LI>
- * <CODE>object</CODE> is an instance of class URISyntax.
- * <LI>
- * This URI attribute's underlying URI and <CODE>object</CODE>'s
- * underlying URI are equal.
- * </OL>
- *
- * @param object Object to compare to.
- *
- * @return True if <CODE>object</CODE> is equivalent to this URI
- * attribute, false otherwise.
- */
- public boolean equals(Object object) {
- return(object != null &&
- object instanceof URISyntax &&
- this.uri.equals (((URISyntax) object).uri));
- }
-
- /**
- * Returns a String identifying this URI attribute. The String is the
- * string representation of the attribute's underlying URI.
- *
- * @return A String identifying this object.
- */
- public String toString() {
- return uri.toString();
- }
-
- }