01: /*
02: * This file is part of PFIXCORE.
03: *
04: * PFIXCORE is free software; you can redistribute it and/or modify
05: * it under the terms of the GNU Lesser General Public License as published by
06: * the Free Software Foundation; either version 2 of the License, or
07: * (at your option) any later version.
08: *
09: * PFIXCORE is distributed in the hope that it will be useful,
10: * but WITHOUT ANY WARRANTY; without even the implied warranty of
11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12: * GNU Lesser General Public License for more details.
13: *
14: * You should have received a copy of the GNU Lesser General Public License
15: * along with PFIXCORE; if not, write to the Free Software
16: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17: *
18: */
19:
20: package de.schlund.pfixxml.targets;
21:
22: /**
23: * Defines method common to all types of dependencies being registered during
24: * the generation of a target in the Pustefix target generator system.
25: *
26: * @author Sebastian Marsching <sebastian.marsching@1und1.de>
27: * @see de.schlund.pfixxml.targets.TargetGenerator
28: * @see de.schlund.pfixxml.targets.Target
29: * @see de.schlund.pfixxml.targets.DependencyType
30: */
31: public interface AuxDependency extends Comparable<AuxDependency> {
32: /**
33: * Returns the type of the dependency.
34: * The type is important as it gives information about to which sub-type
35: * a given instance of AuxDependency can be casted.
36: *
37: * @return type of this dependency
38: */
39: DependencyType getType();
40:
41: /**
42: * Returns a timestamp indicating when this dependency was last changed.
43: * Note that, depending of the type of this dependency, it might have
44: * changed later without being regenerated. Then the time returned will denote
45: * the last time the dependency has been generated.
46: *
47: * @return Timestamp indicating the last modification
48: */
49: long getModTime();
50: }
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