compression.java

JAVA 所有包

/*
 * @(#)Compression.java	1.9 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package javax.print.attribute.standard;

import javax.print.attribute.Attribute;
import javax.print.attribute.EnumSyntax;
import javax.print.attribute.DocAttribute;

/**
 * Class Compression is a printing attribute class, an enumeration, that 
 * specifies how print data is compressed. Compression is an attribute of the 
 * print data (the doc), not of the Print Job. If a Compression attribute is not 
 * specified for a doc, the printer assumes the doc's print data is uncompressed 
 * (i.e., the default Compression value is always {@link #NONE 
 * <CODE>NONE</CODE>}). 
 * <P>
 * <B>IPP Compatibility:</B> The category name returned by 
 * <CODE>getName()</CODE> is the IPP attribute name.  The enumeration's 
 * integer value is the IPP enum value.  The <code>toString()</code> method 
 * returns the IPP string representation of the attribute value.
 * <P>
 *
 * @author  Alan Kaminsky
 */
public class Compression extends EnumSyntax implements DocAttribute {

    private static final long serialVersionUID = -5716748913324997674L;

    /**
     * No compression is used.
     */
    public static final Compression NONE = new Compression(0);

    /**
     * ZIP public domain inflate/deflate compression technology.
     */
    public static final Compression DEFLATE = new Compression(1);

    /**
     * GNU zip compression technology described in
     * <A HREF="http://www.ietf.org/rfc/rfc1952.txt">RFC 1952</A>.
     */
    public static final Compression GZIP = new Compression(2);

    /**
     * UNIX compression technology.
     */
    public static final Compression COMPRESS = new Compression(3);

    /**
     * Construct a new compression enumeration value with the given integer 
     * value. 
     *
     * @param  value  Integer value.
     */
    protected Compression(int value) {
	super(value);
    }


    private static final String[] myStringTable = {"none",
						   "deflate",
						   "gzip",
						   "compress"};

    private static final Compression[] myEnumValueTable = {NONE,
							   DEFLATE,
							   GZIP,
							   COMPRESS};

    /**
     * Returns the string table for class Compression.
     */
    protected String[] getStringTable() {
	return (String[])myStringTable.clone();
    }

    /**
     * Returns the enumeration value table for class Compression.
     */
    protected EnumSyntax[] getEnumValueTable() {
	return (EnumSyntax[])myEnumValueTable.clone();
    }

    /**
     * Get the printing attribute class which is to be used as the "category" 
     * for this printing attribute value.
     * <P>
     * For class Compression and any vendor-defined subclasses, the category is
     * class Compression itself.
     *
     * @return  Printing attribute class (category), an instance of class
     *          {@link java.lang.Class java.lang.Class}.
     */
    public final Class<? extends Attribute> getCategory() {
	return Compression.class;
    }

    /**
     * Get the name of the category of which this attribute value is an 
     * instance. 
     * <P>
     * For class Compression and any vendor-defined subclasses, the category 
     * name is <CODE>"compression"</CODE>. 
     *
     * @return  Attribute category name.
     */
    public final String getName() {
	return "compression";
    }

}