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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 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 
JobState attribute. 
 Instances of JobStateReason do not appear in a Print Job's attribute set directly. Rather, a JobStateReasons attribute appears in the Print Job's attribute set. The JobStateReasons attribute contains zero, one, or more than one JobStateReason objects which pertain to the Print Job's status. The printer adds a 
JobStateReason object to the Print Job's JobStateReasons attribute when the corresponding condition becomes true of the Print Job, and the printer removes the JobStateReason object again when the corresponding condition becomes false, regardless of whether the Print Job's overall JobState also changed. 
 Class JobStateReasons inherits its implementation from class java.util.HashSet. Unlike most printing attributes which are immutable once constructed, class JobStateReasons is designed to be mutable; you can add JobStateReason objects to an existing JobStateReasons object and remove them again. However, like class java.util.HashSet, class JobStateReasons is not multiple thread safe. If a JobStateReasons object will be used by multiple threads, be sure to synchronize its operations (e.g., using a synchronized set view obtained from class 
java.util.Collections). 

IPP Compatibility: The string value returned by each individual JobStateReason object's toString() method gives
the IPP keyword value. The category name returned by getName()
gives the IPP attribute name.

Author:
 Alan Kaminsky/**
 * Class 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 JobStateReasons attribute appears in
 * the Print Job's attribute set. The 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 JobStateReasons inherits its implementation from class {@link
 * java.util.HashSet java.util.HashSet}. Unlike most printing attributes which
 * are immutable once constructed, class JobStateReasons is designed to be
 * mutable; you can add {@link JobStateReason JobStateReason} objects to an
 * existing JobStateReasons object and remove them again. However, like class
 * {@link java.util.HashSet java.util.HashSet}, class JobStateReasons is not
 * multiple thread safe. If a 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()</CODE> method gives
 * the IPP keyword value. The category name returned by <CODE>getName()</CODE>
 * gives the IPP attribute name.
 * <P>
 *
 * @author  Alan Kaminsky
 */
public final class JobStateReasons
    extends HashSet<JobStateReason> implements PrintJobAttribute {

    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.
/**
     * 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.
Params:
initialCapacity –  Initial capacity.
Throws:
IllegalArgumentException – if the initial capacity is less
    than zero./**
     * 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 less
     *     than zero.
     */
    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.
Params:
initialCapacity –  Initial capacity.
loadFactor –       Load factor.
Throws:
IllegalArgumentException – if the initial capacity is less
    than zero./**
     * 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 less
     *     than zero.
     */
    public JobStateReasons(int initialCapacity, float loadFactor) {
        super (initialCapacity, loadFactor);
    }

    
Construct a new job state reasons attribute that contains the same JobStateReason objects as the given collection. The underlying hash set's initial capacity and load factor are as specified in the superclass constructor HashSet(Collection). 
Params:
collection –  Collection to copy.
Throws:
NullPointerException – 
    (unchecked exception) Thrown if collection is null or
    if any element in collection is null.
ClassCastException – 
    (unchecked exception) Thrown if any element in
    collection is not an instance of class JobStateReason./**
     * 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
     * java.util.HashSet#HashSet(java.util.Collection)
     * <CODE>HashSet(Collection)</CODE>}.
     *
     * @param  collection  Collection to copy.
     *
     * @exception  NullPointerException
     *     (unchecked exception) Thrown if <CODE>collection</CODE> is null or
     *     if any element in <CODE>collection</CODE> is null.
     * @throws  ClassCastException
     *     (unchecked exception) Thrown if any element in
     *     <CODE>collection</CODE> 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 JobStateReason. If this job state reasons attribute already contains the specified element, the call leaves this job state reasons attribute unchanged and returns false.
Params:
o –  Element to be added to this job state reasons attribute.
Throws:
NullPointerException – 
    (unchecked exception) Thrown if the specified element is null.
ClassCastException –  (unchecked exception) Thrown if the specified element is not an instance of class JobStateReason.
Returns:
 true if this job state reasons attribute did not
         already contain the specified element.
Since:
1.5/**
     * 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 <tt>false</tt>.
     *
     * @param  o  Element to be added to this job state reasons attribute.
     *
     * @return  <tt>true</tt> if this job state reasons attribute did not
     *          already contain the specified element.
     *
     * @throws  NullPointerException
     *     (unchecked exception) Thrown if the specified element is null.
     * @throws  ClassCastException
     *     (unchecked exception) Thrown 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 ((JobStateReason) o);
    }

    
Get the printing attribute class which is to be used as the "category"
for this printing attribute value.

For class JobStateReasons, the category is class JobStateReasons 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 JobStateReasons, the category is class JobStateReasons itself.
     *
     * @return  Printing attribute class (category), an instance of class
     *          {@link java.lang.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.

For class JobStateReasons, the category
name is "job-state-reasons".
Returns:
 Attribute category name./**
     * 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"</CODE>.
     *
     * @return  Attribute category name.
     */
    public final String getName() {
        return "job-state-reasons";
    }

}