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/*
* DateTerm.java
* Copyright (C) 2002 The Free Software Foundation
*
* This file is part of GNU JavaMail, a library.
*
* GNU JavaMail is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNU JavaMail 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* As a special exception, if you link this library with other files to
* produce an executable, this library does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* This exception does not however invalidate any other reasons why the
* executable file might be covered by the GNU General Public License.
*/
package javax.mail.search;
import java.util.Date;
/**
* This class implements comparisons for Dates.
*
* @author <a href="mailto:dog@gnu.org">Chris Burdess</a>
* @version 1.3
*/
public abstract class DateTerm
extends ComparisonTerm
{
/**
* The date.
*/
protected Date date;
/**
* Constructor.
* @param comparison the comparison type
*/
protected DateTerm(int comparison, Date date)
{
this.comparison = comparison;
this.date = date;
}
/**
* Return the Date to compare with.
*/
public Date getDate()
{
return new Date(date.getTime());
}
/**
* Return the type of comparison.
*/
public int getComparison()
{
return comparison;
}
/**
* The date comparison method.
* @param d the date in the constructor is compared with this date
* @return true if the dates match, otherwise false
*/
protected boolean match(Date d)
{
switch (comparison)
{
case LE:
return d.before(date) || d.equals(date);
case LT:
return d.before(date);
case EQ:
return d.equals(date);
case NE:
return !d.equals(date);
case GT:
return d.after(date);
case GE:
return d.after(date) || d.equals(date);
}
return false;
}
/**
* Equality comparison.
*/
public boolean equals(Object other)
{
return ((other instanceof DateTerm) &&
((DateTerm)other).date.equals(date) &&
super.equals(other));
}
/**
* Compute a hashCode for this object.
*/
public int hashCode()
{
return date.hashCode() + super.hashCode();
}
}
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