01: /**
02: * Copyright 2006 Webmedia Group Ltd.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: **/package org.araneaframework.backend.list.memorybased.compexpr;
16:
17: import org.araneaframework.backend.list.memorybased.ComparatorExpression;
18: import org.araneaframework.backend.list.memorybased.ExpressionEvaluationException;
19: import org.araneaframework.backend.list.memorybased.expression.VariableResolver;
20:
21: /**
22: * ComparatorExpression that does nothing.
23: *
24: * @author Rein Raudjärv
25: *
26: * @since 1.1
27: */
28: public class NopComparatorExpression implements ComparatorExpression {
29:
30: private static final long serialVersionUID = 1L;
31:
32: public int compare(VariableResolver resolver1,
33: VariableResolver resolver2)
34: throws ExpressionEvaluationException {
35: return 0; // do not order any items
36: }
37:
38: }
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