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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package javax.print.attribute.standard;
import java.util.Collection;
import java.util.HashSet;
import javax.print.attribute.Attribute;
import javax.print.attribute.PrintJobAttribute;
/**
* Class {@code JobStateReasons} is a printing attribute class, a set of
* enumeration values, that provides additional information about the job's
* current state, i.e., information that augments the value of the job's
* {@link JobState JobState} attribute.
* <p>
* Instances of {@link JobStateReason JobStateReason} do not appear in a Print
* Job's attribute set directly. Rather, a {@code JobStateReasons} attribute
* appears in the Print Job's attribute set. The {@code JobStateReasons}
* attribute contains zero, one, or more than one
* {@link JobStateReason JobStateReason} objects which pertain to the Print
* Job's status. The printer adds a {@link JobStateReason JobStateReason} object
* to the Print Job's JobStateReasons attribute when the corresponding condition
* becomes true of the Print Job, and the printer removes the
* {@link JobStateReason JobStateReason} object again when the corresponding
* condition becomes false, regardless of whether the Print Job's overall
* {@link JobState JobState} also changed.
* <p>
* Class {@code JobStateReasons} inherits its implementation from class
* {@link HashSet java.util.HashSet}. Unlike most printing attributes
* which are immutable once constructed, class {@code JobStateReasons} is
* designed to be mutable; you can add {@link JobStateReason JobStateReason}
* objects to an existing {@code JobStateReasons} object and remove them again.
* However, like class {@link HashSet java.util.HashSet}, class
* {@code JobStateReasons} is not multiple thread safe. If a
* {@code JobStateReasons} object will be used by multiple threads, be sure to
* synchronize its operations (e.g., using a synchronized set view obtained
* from class {@link java.util.Collections java.util.Collections}).
* <p>
* <b>IPP Compatibility:</b> The string value returned by each individual
* {@link JobStateReason JobStateReason} object's {@code toString()} method
* gives the IPP keyword value. The category name returned by {@code getName()}
* gives the IPP attribute name.
*
* @author Alan Kaminsky
*/
public final class JobStateReasons
extends HashSet<JobStateReason> implements PrintJobAttribute {
/**
* Use serialVersionUID from JDK 1.4 for interoperability.
*/
private static final long serialVersionUID = 8849088261264331812L;
/**
* Construct a new, empty job state reasons attribute; the underlying hash
* set has the default initial capacity and load factor.
*/
public JobStateReasons() {
super();
}
/**
* Construct a new, empty job state reasons attribute; the underlying hash
* set has the given initial capacity and the default load factor.
*
* @param initialCapacity initial capacity
* @throws IllegalArgumentException if the initial capacity is negative
*/
public JobStateReasons(int initialCapacity) {
super (initialCapacity);
}
/**
* Construct a new, empty job state reasons attribute; the underlying hash
* set has the given initial capacity and load factor.
*
* @param initialCapacity initial capacity
* @param loadFactor load factor
* @throws IllegalArgumentException if the initial capacity is negative
*/
public JobStateReasons(int initialCapacity, float loadFactor) {
super (initialCapacity, loadFactor);
}
/**
* Construct a new job state reasons attribute that contains the same
* {@link JobStateReason JobStateReason} objects as the given collection.
* The underlying hash set's initial capacity and load factor are as
* specified in the superclass constructor
* {@link HashSet#HashSet(Collection) HashSet(Collection)}.
*
* @param collection collection to copy
* @throws NullPointerException if {@code collection} is {@code null} or if
* any element in {@code collection} is {@code null}
* @throws ClassCastException if any element in {@code collection} is not an
* instance of class {@link JobStateReason JobStateReason}
*/
public JobStateReasons(Collection<JobStateReason> collection) {
super (collection);
}
/**
* Adds the specified element to this job state reasons attribute if it is
* not already present. The element to be added must be an instance of class
* {@link JobStateReason JobStateReason}. If this job state reasons
* attribute already contains the specified element, the call leaves this
* job state reasons attribute unchanged and returns {@code false}.
*
* @param o element to be added to this job state reasons attribute
* @return {@code true} if this job state reasons attribute did not already
* contain the specified element
* @throws NullPointerException if the specified element is {@code null}
* @throws ClassCastException if the specified element is not an instance of
* class {@link JobStateReason JobStateReason}
* @since 1.5
*/
public boolean add(JobStateReason o) {
if (o == null) {
throw new NullPointerException();
}
return super.add(o);
}
/**
* Get the printing attribute class which is to be used as the "category"
* for this printing attribute value.
* <p>
* For class {@code JobStateReasons}, the category is class
* JobStateReasons itself.
*
* @return printing attribute class (category), an instance of class
* {@link Class java.lang.Class}
*/
public final Class<? extends Attribute> getCategory() {
return JobStateReasons.class;
}
/**
* Get the name of the category of which this attribute value is an
* instance.
* <p>
* For class JobStateReasons, the category name is
* {@code "job-state-reasons"}.
*
* @return attribute category name
*/
public final String getName() {
return "job-state-reasons";
}
}