01: /*
02: * GeoTools - OpenSource mapping toolkit
03: * http://geotools.org
04: * (C) 2002-2006, GeoTools Project Managment Committee (PMC)
05: *
06: * This library is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation;
09: * version 2.1 of the License.
10: *
11: * This library is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: */
16: package org.geotools.filter;
17:
18: import org.geotools.feature.Feature;
19:
20: /**
21: * DOCUMENT ME!
22: *
23: * @author James
24: * @source $URL: http://svn.geotools.org/geotools/tags/2.4.1/modules/library/api/src/main/java/org/geotools/filter/EnvironmentVariable.java $
25: */
26: public interface EnvironmentVariable extends Expression {
27: /**
28: * Gets the attribute value at the path held by this expression from the
29: * feature.
30: *
31: * @param feature the feature to get this attribute from.
32: *
33: * @return the value of the attribute found by this expression.
34: *
35: * @deprecated use {@link org.opengis.filter.expression.Expression#evaluate(Object)}
36: */
37: Object getValue(Feature feature);
38: }
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