src/java.desktop/share/classes/javax/print/attribute/standard/JobImpressions.java

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package javax.print.attribute.standard;

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

/**
 * Class {@code 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 {@code 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 {@code JobImpressions} attribute's value if it is not supplied in the
 * Print Request. Even if the client does supply a value for the
 * {@code 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 {@code JobImpressions} attribute either right at
 * job submission time or at any later point in time.
 * <p>
 * As with {@link JobKOctets JobKOctets}, the {@code 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 {@code 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()} gives the IPP attribute name.
 *
 * @author Alan Kaminsky
 * @see JobImpressionsSupported
 * @see JobImpressionsCompleted
 * @see JobKOctets
 * @see JobMediaSheets
 */
public final class JobImpressions extends IntegerSyntax
    implements PrintRequestAttribute, PrintJobAttribute {

    /**
     * Use serialVersionUID from JDK 1.4 for interoperability.
     */
    private static final long serialVersionUID = 8225537206784322464L;

    /**
     * Construct a new job impressions attribute with the given integer value.
     *
     * @param  value Integer value
     * @throws IllegalArgumentException if {@code value} is negative
     *
     */
    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} is not {@code null}.
     *   <li>{@code object} is an instance of class {@code JobImpressions}.
     *   <li>This job impressions attribute's value and {@code object}'s value
     *   are equal.
     * </ol>
     *
     * @param  object {@code Object} to compare to
     * @return {@code true} if {@code object} is equivalent to this job
     *         impressions attribute, {@code 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 {@code JobImpressions}, the category is class
     * {@code JobImpressions} itself.
     *
     * @return printing attribute class (category), an instance of class
     *         {@link Class java.lang.Class}
     */
    public final Class<? extends Attribute> getCategory() {
        return JobImpressions.class;
    }

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