jobimpressions.java

java jdk 1.4的源码

/*
 * @(#)JobImpressions.java	1.4 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package javax.print.attribute.standard;

import javax.print.attribute.IntegerSyntax;
import javax.print.attribute.PrintRequestAttribute;
import javax.print.attribute.PrintJobAttribute;

/**
 * Class JobImpressions is an integer valued printing attribute class that 
 * specifies the total size in number of impressions of the document(s) being 
 * submitted. An "impression" is the image (possibly many print-stream pages in 
 * different configurations) imposed onto a single media page. 
 * <P>
 * The JobImpressions attribute describes the size of the job. This attribute is 
 * not intended to be a counter; it is intended to be useful routing and 
 * scheduling information if known. The printer may try to compute the 
 * JobImpressions attribute's value if it is not supplied in the Print Request. 
 * Even if the client does supply a value for the JobImpressions attribute in 
 * the Print Request, the printer may choose to change the value if the printer 
 * is able to compute a value which is more accurate than the client supplied 
 * value. The printer may be able to determine the correct value for the 
 * JobImpressions attribute either right at job submission time or at any later 
 * point in time. 
 * <P>
 * As with {@link JobKOctets JobKOctets}, the JobImpressions value must not 
 * include the multiplicative factors contributed by the number of copies 
 * specified by the {@link Copies Copies} attribute, independent of whether the 
 * device can process multiple copies without making multiple passes over the 
 * job or document data and independent of whether the output is collated or 
 * not. Thus the value is independent of the implementation and reflects the 
 * size of the document(s) measured in impressions independent of the number of 
 * copies. 
 * <P>
 * As with {@link JobKOctets JobKOctets}, the JobImpressions value must also not 
 * include the multiplicative factor due to a copies instruction embedded in the 
 * document data. If the document data actually includes replications of the 
 * document data, this value will include such replication. In other words, this 
 * value is always the number of impressions in the source document data, rather 
 * than a measure of the number of impressions to be produced by the job. 
 * <P>
 * <B>IPP Compatibility:</B> The integer value gives the IPP integer value. The 
 * category name returned by <CODE>getName()</CODE> gives the IPP attribute 
 * name. 
 * <P>
 *
 * @see JobImpressionsSupported
 * @see JobImpressionsCompleted
 * @see JobKOctets
 * @see JobMediaSheets
 *
 * @author  Alan Kaminsky
 */
public final class JobImpressions extends IntegerSyntax
    implements PrintRequestAttribute, PrintJobAttribute	{

    /**
     * Construct a new job impressions attribute with the given integer value. 
     *
     * @param  value  Integer value.
     *
     * @exception  IllegalArgumentException
     *  (Unchecked exception) Thrown if <CODE>value</CODE> is less than 0.
     */
    public JobImpressions(int value) {
	super(value, 0, Integer.MAX_VALUE);
    }

    /**
     * Returns whether this job impressions 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 JobImpressions.
     * <LI>
     * This job impressions attribute's value and <CODE>object</CODE>'s value 
     * are equal. 
     * </OL>
     *
     * @param  object  Object to compare to.
     *
     * @return  True if <CODE>object</CODE> is equivalent to this job
     *          impressions attribute, false otherwise. 
     */
    public boolean equals(Object object) {
	return super.equals (object) && object instanceof JobImpressions;
    }

    /**
     * Get the printing attribute class which is to be used as the "category" 
     * for this printing attribute value.
     * <P>
     * For class JobImpressions, the category is class JobImpressions itself. 
     *
     * @return  Printing attribute class (category), an instance of class
     *          {@link java.lang.Class java.lang.Class}.
     */
    public final Class getCategory() {
	return JobImpressions.class;
    }

    /**
     * Get the name of the category of which this attribute value is an 
     * instance. 
     * <P>
     * For class JobImpressions, the category name is 
     * <CODE>"job-impressions"</CODE>. 
     *
     * @return  Attribute category name.
     */
    public final String getName() {
	return "job-impressions";
    }
    
}