01: //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/trunk/src/org/deegree/model/filterencoding/Operation.java $
02: /*---------------- FILE HEADER ------------------------------------------
03:
04: This file is part of deegree.
05: Copyright (C) 2001-2008 by:
06: EXSE, 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: Aennchenstr. 19
30: 53115 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: ---------------------------------------------------------------------------*/
44:
45: package org.deegree.model.filterencoding;
46:
47: import org.deegree.model.feature.Feature;
48:
49: /**
50: *
51: * <p>
52: * --------------------------------------------------------------------------
53: * </p>
54: *
55: * @author Markus Schneider
56: * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
57: * @version $Revision: 9343 $ $Date: 2007-12-27 05:30:32 -0800 (Thu, 27 Dec 2007) $
58: */
59: public interface Operation {
60:
61: /** Returns the name of the operator. */
62: String getOperatorName();
63:
64: /**
65: * Returns the operator's id.
66: */
67: int getOperatorId();
68:
69: /**
70: * Calculates the <tt>Filter</tt>'s logical value based on the certain property values of the
71: * given feature.
72: *
73: * @param feature
74: * that determines the values of <tt>PropertyNames</tt> in the expression
75: * @return true, if the <tt>Filter</tt> evaluates to true, else false
76: * @throws FilterEvaluationException
77: * if the evaluation fails
78: */
79: public boolean evaluate(Feature feature)
80: throws FilterEvaluationException;
81:
82: /** Produces an indented XML representation of this object. */
83: public StringBuffer toXML();
84: }
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