blob: 6c6da671faf6e38592cf32b35d45e91e8d70d4b1 [file] [log] [blame]
/*
* Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* 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
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* 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).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.print.attribute.standard;
import java.util.Date;
import javax.print.attribute.Attribute;
import javax.print.attribute.DateTimeSyntax;
import javax.print.attribute.PrintRequestAttribute;
import javax.print.attribute.PrintJobAttribute;
/**
* Class JobHoldUntil is a printing attribute class, a date-time attribute, that
* specifies the exact date and time at which the job must become a candidate
* for printing.
* <P>
* If the value of this attribute specifies a date-time that is in the future,
* the printer should add the {@link JobStateReason JobStateReason} value of
* JOB_HOLD_UNTIL_SPECIFIED to the job's {@link JobStateReasons JobStateReasons}
* attribute, must move the job to the PENDING_HELD state, and must not schedule
* the job for printing until the specified date-time arrives.
* <P>
* When the specified date-time arrives, the printer must remove the {@link
* JobStateReason JobStateReason} value of JOB_HOLD_UNTIL_SPECIFIED from the
* job's {@link JobStateReasons JobStateReasons} attribute, if present. If there
* are no other job state reasons that keep the job in the PENDING_HELD state,
* the printer must consider the job as a candidate for processing by moving the
* job to the PENDING state.
* <P>
* If the specified date-time has already passed, the job must be a candidate
* for processing immediately. Thus, one way to make the job immediately become
* a candidate for processing is to specify a JobHoldUntil attribute constructed
* like this (denoting a date-time of January 1, 1970, 00:00:00 GMT):
* <PRE>
* JobHoldUntil immediately = new JobHoldUntil (new Date (0L));
* </PRE>
* <P>
* If the client does not supply this attribute in a Print Request and the
* printer supports this attribute, the printer must use its
* (implementation-dependent) default JobHoldUntil value at job submission time
* (unlike most job template attributes that are used if necessary at job
* processing time).
* <P>
* To construct a JobHoldUntil attribute from separate values of the year,
* month, day, hour, minute, and so on, use a {@link java.util.Calendar
* Calendar} object to construct a {@link java.util.Date Date} object, then use
* the {@link java.util.Date Date} object to construct the JobHoldUntil
* attribute. To convert a JobHoldUntil attribute to separate values of the
* year, month, day, hour, minute, and so on, create a {@link java.util.Calendar
* Calendar} object and set it to the {@link java.util.Date Date} from the
* JobHoldUntil attribute.
* <P>
* <B>IPP Compatibility:</B> Although IPP supports a "job-hold-until" attribute
* specified as a keyword, IPP does not at this time support a "job-hold-until"
* attribute specified as a date and time. However, the date and time can be
* converted to one of the standard IPP keywords with some loss of precision;
* for example, a JobHoldUntil value with today's date and 9:00pm local time
* might be converted to the standard IPP keyword "night". The category name
* returned by {@code getName()} gives the IPP attribute name.
*
* @author Alan Kaminsky
*/
public final class JobHoldUntil extends DateTimeSyntax
implements PrintRequestAttribute, PrintJobAttribute {
private static final long serialVersionUID = -1664471048860415024L;
/**
* Construct a new job hold until date-time attribute with the given
* {@link java.util.Date Date} value.
*
* @param dateTime {@link java.util.Date Date} value.
*
* @exception NullPointerException
* (unchecked exception) Thrown if {@code dateTime} is null.
*/
public JobHoldUntil(Date dateTime) {
super (dateTime);
}
/**
* Returns whether this job hold until 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 null.
* <LI>
* {@code object} is an instance of class JobHoldUntil.
* <LI>
* This job hold until attribute's {@link java.util.Date Date} value and
* {@code object}'s {@link java.util.Date Date} value are equal.
* </OL>
*
* @param object Object to compare to.
*
* @return True if {@code object} is equivalent to this job hold
* until attribute, false otherwise.
*/
public boolean equals(Object object) {
return (super.equals(object) && object instanceof JobHoldUntil);
}
/**
* Get the printing attribute class which is to be used as the "category"
* for this printing attribute value.
* <P>
* For class JobHoldUntil, the category is class JobHoldUntil itself.
*
* @return Printing attribute class (category), an instance of class
* {@link java.lang.Class java.lang.Class}.
*/
public final Class<? extends Attribute> getCategory() {
return JobHoldUntil.class;
}
/**
* Get the name of the category of which this attribute value is an
* instance.
* <P>
* For class JobHoldUntil, the category name is {@code "job-hold-until"}.
*
* @return Attribute category name.
*/
public final String getName() {
return "job-hold-until";
}
}