01: /*
02: * $Header$
03: * $Revision: 125 $
04: * $Date: 2005-07-01 07:48:18 -0700 $
05: *
06: * ====================================================================
07: *
08: * Copyright 1999-2004 The Apache Software Foundation
09: *
10: * Licensed under the Apache License, Version 2.0 (the "License");
11: * you may not use this file except in compliance with the License.
12: * You may obtain a copy of the License at
13: *
14: * http://www.apache.org/licenses/LICENSE-2.0
15: *
16: * Unless required by applicable law or agreed to in writing, software
17: * distributed under the License is distributed on an "AS IS" BASIS,
18: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19: * See the License for the specific language governing permissions and
20: * limitations under the License.
21: *
22: */
23: package org.apache.slide.index.lucene.expressions;
24:
25: import org.apache.slide.index.lucene.Index;
26:
27: /**
28: * Implements an empty expression
29: */
30: public class EmptyExpression extends AbstractLuceneExpression {
31: public EmptyExpression(Index index) {
32: super (index);
33:
34: setQuery(null);
35:
36: if (index.getLogger().isDebugEnabled()) {
37: index.getLogger().debug(" Made EmptyExpression!");
38: }
39: }
40: }
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