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Java > Open Source Codes > org > outerj > daisy > query > model > AlwaysSatisfiedPredicate


1 /*
2  * Copyright 2004 Outerthought bvba and Schaubroeck nv
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
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  */
16 package org.outerj.daisy.query.model;
17
18 import org.outerj.daisy.query.QueryContext;
19 import org.outerj.daisy.repository.query.QueryException;
20 import org.outerj.daisy.repository.query.EvaluationContext;
21 import org.outerj.daisy.repository.Document;
22 import org.outerj.daisy.repository.Version;
23
24 import java.sql.PreparedStatement JavaDoc;
25 import java.sql.SQLException JavaDoc;
26
27 public class AlwaysSatisfiedPredicate extends AbstractPredicateExpr {
28
29     public void prepare(QueryContext context) throws QueryException {
30     }
31
32     public boolean evaluate(Document document, Version version, EvaluationContext evaluationContext) throws QueryException {
33         return true;
34     }
35
36     public AclConditionViolation isAclAllowed() {
37         return null;
38     }
39
40     public Tristate appliesTo(Document document) {
41         return Tristate.YES;
42     }
43
44     public void generateSql(StringBuffer JavaDoc sql, SqlGenerationContext context) throws QueryException {
45         sql.append(" 1 = 1");
46     }
47
48     public int bindSql(PreparedStatement JavaDoc stmt, int bindPos, EvaluationContext evaluationContext) throws SQLException JavaDoc {
49         return bindPos;
50     }
51 }
52
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