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package javax.print.attribute.standard;
import java.util.Calendar;
import java.util.Date;
import javax.print.attribute.Attribute;
import javax.print.attribute.DateTimeSyntax;
import javax.print.attribute.PrintJobAttribute;
import javax.print.attribute.PrintRequestAttribute;
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. If the value of this attribute specifies a date-time that is in the future, the printer should add the JobStateReason value of JOB_HOLD_UNTIL_SPECIFIED to the job's 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.
When the specified date-time arrives, the printer must remove the JobStateReason value of JOB_HOLD_UNTIL_SPECIFIED from the job's 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.
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):
JobHoldUntil immediately = new JobHoldUntil (new Date (0L));
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).
To construct a JobHoldUntil attribute from separate values of the year, month, day, hour, minute, and so on, use a Calendar object to construct a Date object, then use the 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 Calendar object and set it to the Date from the JobHoldUntil attribute.
IPP Compatibility: 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 getName() gives the IPP attribute name.
Author: Alan Kaminsky
/**
* Class {@code 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
* {@code JOB_HOLD_UNTIL_SPECIFIED} to the job's
* {@link JobStateReasons JobStateReasons} attribute, must move the job to the
* {@code 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
* {@code 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 {@code 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 {@code 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 {@code JobHoldUntil} value at job
* submission time (unlike most job template attributes that are used if
* necessary at job processing time).
* <p>
* To construct a {@code JobHoldUntil} attribute from separate values of the
* year, month, day, hour, minute, and so on, use a {@link Calendar Calendar}
* object to construct a {@link Date Date} object, then use the
* {@link Date Date} object to construct the {@code JobHoldUntil} attribute. To
* convert a {@code JobHoldUntil} attribute to separate values of the year,
* month, day, hour, minute, and so on, create a {@link Calendar Calendar}
* object and set it to the {@link Date Date} from the {@code 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 {@code 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 {
Use serialVersionUID from JDK 1.4 for interoperability.
/**
* Use serialVersionUID from JDK 1.4 for interoperability.
*/
private static final long serialVersionUID = -1664471048860415024L;
Construct a new job hold until date-time attribute with the given Date value. Params: - dateTime –
Date value
Throws: - NullPointerException – if
dateTime is null
/**
* Construct a new job hold until date-time attribute with the given
* {@link Date Date} value.
*
* @param dateTime {@link Date Date} value
* @throws NullPointerException if {@code dateTime} is {@code 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:
Params: - object –
Object to compare to
Returns: true if object is equivalent to this job hold until attribute, false otherwise
/**
* 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 {@code null}.
* <li>{@code object} is an instance of class {@code JobHoldUntil}.
* <li>This job hold until attribute's {@link Date Date} value and
* {@code object}'s {@link Date Date} value are equal.
* </ol>
*
* @param object {@code Object} to compare to
* @return {@code true} if {@code object} is equivalent to this job hold
* until attribute, {@code 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.
For class JobHoldUntil, the category is class JobHoldUntil 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 JobHoldUntil}, the category is class
* {@code JobHoldUntil} itself.
*
* @return printing attribute class (category), an instance of class
* {@link 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.
For class JobHoldUntil, the category name is "job-hold-until".
Returns: attribute category name
/**
* Get the name of the category of which this attribute value is an
* instance.
* <p>
* For class {@code JobHoldUntil}, the category name is
* {@code "job-hold-until"}.
*
* @return attribute category name
*/
public final String getName() {
return "job-hold-until";
}
}