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1   /*
2    *  XNap - A P2P framework and client.
3    *
4    *  See the file AUTHORS for copyright information.
5    *
6    *  This program is free software; you can redistribute it and/or modify
7    *  it under the terms of the GNU General Public License as published by
8    *  the Free Software Foundation.
9    *
10   *  This program is distributed in the hope that it will be useful,
11   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   *  GNU General Public License for more details.
14   *
15   *  You should have received a copy of the GNU General Public License
16   *  along with this program; if not, write to the Free Software
17   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18   */
19  
20  package org.xnap.pkg;
21  
22  import java.util.Iterator;
23  import java.util.LinkedList;
24  
25  /***
26   */
27  public class PackageDependencyNode extends AbstractDependencyNode
28  {
29  
30  	//--- Data Field(s) ---
31  
32  	private PackageInfo info;
33  	private DependencyNode conflicts;
34  	private DependencyNode depends;
35  	private boolean required;
36  
37  	//--- Constructor(s) ---
38  
39  	public PackageDependencyNode(PackageInfo info)
40  	{
41  		super(info.getName() + " " + info.getVersion());
42  
43  		this.info = info;
44  	}
45  
46      //--- Method(s) ---
47  
48  	public void checkDepends(boolean requireInstalled)
49  		throws UnsatisfiedDependenciesException
50  	{
51  		if (requireInstalled && !info.isInstalled()) {
52  			throw new UnsatisfiedDependenciesException
53  				(info.getPackage() + " is not installed");
54  		}
55  		if (depends != null) {
56  			depends.require(requireInstalled);
57  		}
58  	}
59  
60  	public Iterator children()
61  	{
62  		LinkedList l = new LinkedList();
63  		if (depends != null) {
64  			l.add(depends);
65  		}
66  		return l.iterator();
67  	}
68  
69  	public DependencyNode getConflicts()
70  	{
71  		return conflicts;
72  	}
73  
74  	public DependencyNode getDepends()
75  	{
76  		return depends;
77  	}
78  
79  	public PackageInfo getPackage()
80  	{
81  		return info;
82  	}
83  
84  	public void setConflicts(DependencyNode node)
85  	{
86  		this.conflicts = node;
87  	}
88  
89  	public void setDepends(DependencyNode node)
90  	{
91  		this.depends = node;
92  	}
93  
94  }
95