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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 JobKOctets is an integer valued printing attribute class that specifies the total size of the document(s) in K octets, i.e., in units of 1024 octets requested to be processed in the job. The value must be rounded up, so that a job between 1 and 1024 octets must be indicated as being 1K octets, 1025 to 2048 must be 2K octets, etc. For a multidoc print job (a job with multiple documents), the JobKOctets value is computed by adding up the individual documents' sizes in octets, then rounding up to the next K octets value. The JobKOctets 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 JobKOctets attribute's value if it is not supplied in the Print Request. Even if the client does supply a value for the JobKOctets 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 JobKOctets attribute either right at job submission time or at any later point in time.
The JobKOctets value must not include the multiplicative factors contributed by the number of copies specified by the 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 indicates the size of the document(s) measured in K octets independent of the number of copies.
The JobKOctets 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 size of the source document data, rather than a measure of the hardcopy output to be produced.
The size of a doc is computed based on the print data representation class as specified by the doc's DocFlavor, as shown in the table below.
Table showing computation of doc sizes
Representation Class
Document Size
byte[] Length of the byte array
java.io.InputStream Number of bytes read from the stream
char[] Length of the character array x 2
java.lang.String Length of the string x 2
java.io.Reader Number of characters read from the stream x 2
java.net.URL Number of bytes read from the file at the given URL address
java.awt.image.renderable.RenderableImage Implementation dependent*
java.awt.print.Printable Implementation dependent*
java.awt.print.Pageable Implementation dependent*
* In these cases the Print Service itself generates the print data sent to the printer. If the Print Service supports the JobKOctets attribute, for these cases the Print Service itself must calculate the size of the print data, replacing any JobKOctets value the client specified.
IPP Compatibility: The integer value gives the IPP integer value. The category name returned by getName() gives the IPP attribute name.
Author: Alan Kaminsky See Also:
/**
* Class {@code JobKOctets} is an integer valued printing attribute class that
* specifies the total size of the document(s) in K octets, i.e., in units of
* 1024 octets requested to be processed in the job. The value must be rounded
* up, so that a job between 1 and 1024 octets must be indicated as being 1K
* octets, 1025 to 2048 must be 2K octets, etc. For a multidoc print job (a job
* with multiple documents), the {@code JobKOctets} value is computed by adding
* up the individual documents' sizes in octets, then rounding up to the next K
* octets value.
* <p>
* The {@code JobKOctets} 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 JobKOctets} attribute's value if it is not supplied in the Print
* Request. Even if the client does supply a value for the {@code JobKOctets}
* 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 JobKOctets} attribute either right at job submission time or at
* any later point in time.
* <p>
* The {@code JobKOctets} 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 indicates the size of the document(s) measured in K
* octets independent of the number of copies.
* <p>
* The {@code JobKOctets} 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 size of
* the source document data, rather than a measure of the hardcopy output to be
* produced.
* <p>
* The size of a doc is computed based on the print data representation class as
* specified by the doc's {@link javax.print.DocFlavor DocFlavor}, as shown in
* the table below.
*
* <table class="striped">
* <caption>Table showing computation of doc sizes</caption>
* <thead>
* <tr>
* <th scope="col">Representation Class
* <th scope="col">Document Size
* </thead>
* <tbody>
* <tr>
* <th scope="row">{@code byte[]}
* <td>Length of the byte array
* <tr>
* <th scope="row">{@code java.io.InputStream}
* <td>Number of bytes read from the stream
* <tr>
* <th scope="row">{@code char[]}
* <td>Length of the character array x 2
* <tr>
* <th scope="row">{@code java.lang.String}
* <td>Length of the string x 2
* <tr>
* <th scope="row">{@code java.io.Reader}
* <td>Number of characters read from the stream x 2
* <tr>
* <th scope="row">{@code java.net.URL}
* <td>Number of bytes read from the file at the given {@code URL} address
* <tr>
* <th scope="row">{@code java.awt.image.renderable.RenderableImage}
* <td>Implementation dependent*
* <tr>
* <th scope="row">{@code java.awt.print.Printable}
* <td>Implementation dependent*
* <tr>
* <th scope="row">{@code java.awt.print.Pageable}
* <td>Implementation dependent*
* </tbody>
* </table>
* <p>
* * In these cases the Print Service itself generates the print data sent
* to the printer. If the Print Service supports the {@code JobKOctets}
* attribute, for these cases the Print Service itself must calculate the size
* of the print data, replacing any {@code JobKOctets} value the client
* specified.
* <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 JobKOctetsSupported
* @see JobKOctetsProcessed
* @see JobImpressions
* @see JobMediaSheets
*/
public final class JobKOctets extends IntegerSyntax
implements PrintRequestAttribute, PrintJobAttribute {
Use serialVersionUID from JDK 1.4 for interoperability.
/**
* Use serialVersionUID from JDK 1.4 for interoperability.
*/
private static final long serialVersionUID = -8959710146498202869L;
Construct a new job K octets attribute with the given integer value.
Params: - value – Integer value
Throws: - IllegalArgumentException – if
value is negative
/**
* Construct a new job K octets attribute with the given integer value.
*
* @param value Integer value
* @throws IllegalArgumentException if {@code value} is negative
*/
public JobKOctets(int value) {
super (value, 0, Integer.MAX_VALUE);
}
Returns whether this job K octets attribute is equivalent to the passed
in object. To be equivalent, all of the following conditions must be
true:
object is not null. object is an instance of class JobKOctets. - This job K octets attribute's value and
object's value are equal.
Params: - object –
Object to compare to
Returns: true if object is equivalent to this job K octets attribute, false otherwise
/**
* Returns whether this job K octets 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 JobKOctets}.
* <li>This job K octets 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 K octets
* attribute, {@code false} otherwise
*/
public boolean equals(Object object) {
return super.equals(object) && object instanceof JobKOctets;
}
Get the printing attribute class which is to be used as the "category"
for this printing attribute value.
For class JobKOctets, the category is class JobKOctets itself.
Returns: printing attribute class (category), an instance of class java.lang.Class
/**
* Get the printing attribute class which is to be used as the "category"
* for this printing attribute value.
* <p>
* For class {@code JobKOctets}, the category is class
* {@code JobKOctets} itself.
*
* @return printing attribute class (category), an instance of class
* {@link Class java.lang.Class}
*/
public final Class<? extends Attribute> getCategory() {
return JobKOctets.class;
}
Get the name of the category of which this attribute value is an
instance.
For class JobKOctets, the category name is "job-k-octets".
Returns: attribute category name
/**
* Get the name of the category of which this attribute value is an
* instance.
* <p>
* For class {@code JobKOctets}, the category name is
* {@code "job-k-octets"}.
*
* @return attribute category name
*/
public final String getName() {
return "job-k-octets";
}
}