01: //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/trunk/src/org/deegree/io/datastore/schema/content/ConstantContent.java $
02: /*---------------- FILE HEADER ------------------------------------------
03:
04: This file is part of deegree.
05: Copyright (C) 2001-2008 by:
06: Department of Geography, University of Bonn
07: http://www.giub.uni-bonn.de/deegree/
08: lat/lon GmbH
09: http://www.lat-lon.de
10:
11: This library is free software; you can redistribute it and/or
12: modify it under the terms of the GNU Lesser General Public
13: License as published by the Free Software Foundation; either
14: version 2.1 of the License, or (at your option) any later version.
15:
16: This library is distributed in the hope that it will be useful,
17: but WITHOUT ANY WARRANTY; without even the implied warranty of
18: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19: Lesser General Public License for more details.
20:
21: You should have received a copy of the GNU Lesser General Public
22: License along with this library; if not, write to the Free Software
23: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24:
25: Contact:
26:
27: Andreas Poth
28: lat/lon GmbH
29: Aennchenstraße 19
30: 53177 Bonn
31: Germany
32: E-Mail: poth@lat-lon.de
33:
34: Prof. Dr. Klaus Greve
35: Department of Geography
36: University of Bonn
37: Meckenheimer Allee 166
38: 53115 Bonn
39: Germany
40: E-Mail: greve@giub.uni-bonn.de
41:
42: ---------------------------------------------------------------------------*/
43: package org.deegree.io.datastore.schema.content;
44:
45: import org.deegree.io.datastore.schema.MappedSimplePropertyType;
46:
47: /**
48: * Special content class for {@link MappedSimplePropertyType}s that contain constant string
49: * values.
50: *
51: * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider</a>
52: * @author last edited by: $Author: apoth $
53: *
54: * @version $Revision: 9342 $, $Date: 2007-12-27 04:32:57 -0800 (Thu, 27 Dec 2007) $
55: */
56: public class ConstantContent extends VirtualContent implements
57: FunctionParam {
58:
59: private String constant;
60:
61: /**
62: * Initializes a newly created <code>ConstantContent</code> object so that it represents
63: * the given {@link String} value.
64: *
65: * @param constant
66: */
67: public ConstantContent(String constant) {
68: this .constant = constant;
69: }
70:
71: /**
72: * Returns false, because it makes no sense to use a constant as a sort criterion.
73: *
74: * @return false, because it makes no sense to use a constant as a sort criterion.
75: */
76: public boolean isSortable() {
77: return false;
78: }
79:
80: /**
81: * Returns the constant {@link String} that this object contains.
82: *
83: * @return constant String that this object contains
84: */
85: public String getValue() {
86: return this.constant;
87: }
88: }
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