1 /*
2 * Copyright 2007 The Kuali Foundation
3 *
4 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
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.kuali.rice.core.ojb;
17
18 import org.apache.ojb.broker.accesslayer.sql.SelectStatement;
19 import org.apache.ojb.broker.accesslayer.sql.SqlGeneratorDefaultImpl;
20 import org.apache.ojb.broker.metadata.ClassDescriptor;
21 import org.apache.ojb.broker.platforms.Platform;
22 import org.apache.ojb.broker.query.Query;
23 import org.apache.ojb.broker.util.logging.Logger;
24 import org.apache.ojb.broker.util.logging.LoggerFactory;
25 import org.kuali.rice.core.util.RiceDebugUtils;
26
27 /**
28 * SqlGeneratorDefaultImpl subclass that replaced the vanilla SqlSelectStatement implementation
29 * with a new {@link SuffixedSqlSelectStatement} that is {@link SuffixableQueryByCriteria} - aware.
30 * This class needs to be specified as the SqlGenerator implementation in the OJB properties, to replace
31 * the SqlGeneratorDefaultImpl.
32 * This is a hack to introduce select-for-update functionality into OJB so the same ORM/Criteria abstractions
33 * can be retained for select-for-update queries. Select for update appears to have been added in the OJB
34 * source repository, so maybe a forthcoming release will include this functionality and these kludges can be
35 * removed.
36 * @see SuffixedSqlSelectStatement
37 * @author Kuali Rice Team (rice.collab@kuali.org)
38 */
39 public class SqlGeneratorSuffixableImpl extends SqlGeneratorDefaultImpl {
40 private Logger logger = LoggerFactory.getLogger(SqlGeneratorSuffixableImpl.class);
41
42 public SqlGeneratorSuffixableImpl(Platform platform) {
43 super(platform);
44 }
45
46 @Override
47 public SelectStatement getPreparedSelectStatement(Query query, ClassDescriptor cld) {
48 SelectStatement sql = new SuffixedSqlSelectStatement(getPlatform(), cld, query, logger);
49 if (logger.isDebugEnabled()) {
50 boolean masochisticSqlLogging = true;
51 if ( masochisticSqlLogging ) {
52 StringBuffer sb = RiceDebugUtils.getTruncatedStackTrace( true );
53 logger.debug("SQL: " + sql.getStatement() + "\n" + query.getCriteria() + "\n" + sb.toString() );
54 } else {
55 logger.debug("SQL: " + sql.getStatement() );
56 }
57 }
58 return sql;
59 }
60 }