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/*
* FlagTerm.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 javax.mail.Flags;
import javax.mail.Message;
/**
* This class implements comparisons for Message Flags.
*
* @author <a href="mailto:dog@gnu.org">Chris Burdess</a>
* @version 1.3
*/
public final class FlagTerm
extends SearchTerm
{
/**
* Indicates whether to test for the presence or absence of the specified
* Flag. If true, then test whether all the specified flags are present,
* else test whether all the specified flags are absent.
*/
protected boolean set;
/**
* Flags object containing the flags to test.
*/
protected Flags flags;
/**
* Constructor.
* @param flags Flags object containing the flags to check for
* @param set the flag setting to check for
*/
public FlagTerm(Flags flags, boolean set)
{
this.flags = flags;
this.set = set;
}
/**
* Return the Flags to test.
*/
public Flags getFlags()
{
return (Flags)flags.clone();
}
/**
* Return true if testing whether the flags are set.
*/
public boolean getTestSet()
{
return set;
}
/**
* The comparison method.
* @param msg The flag comparison is applied to this Message
* @return true if the comparson succeeds, otherwise false.
*/
public boolean match(Message msg)
{
try
{
Flags messageFlags = msg.getFlags();
if (set)
return messageFlags.contains(flags);
Flags.Flag[] systemFlags = flags.getSystemFlags();
for (int i = 0; i<systemFlags.length; i++)
{
if (messageFlags.contains(systemFlags[i]))
return false;
}
String[] userFlags = flags.getUserFlags();
for (int i = 0; i<userFlags.length; i++)
{
if (messageFlags.contains(userFlags[i]))
return false;
}
return true;
}
catch (Exception e)
{
}
return false;
}
/**
* Equality comparison.
*/
public boolean equals(Object other)
{
if (other instanceof FlagTerm)
{
FlagTerm ft = (FlagTerm)other;
return (ft.set==set && ft.flags.equals(flags));
}
return false;
}
/**
* Compute a hashCode for this object.
*/
public int hashCode()
{
return set ? flags.hashCode() : ~flags.hashCode();
}
}
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