Java tutorial
/** Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types. "Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). "Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof. "Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution." "Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work. 2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form. 3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed. 4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions: (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and (b) You must cause any modified files to carry prominent notices stating that You changed the files; and (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License. 5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions. 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages. 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS APPENDIX: How to apply the Apache License to your work. To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright 2011 Eric Haddad Koenig Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ /** Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types. "Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). "Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof. "Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution." "Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work. 2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form. 3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed. 4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions: (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and (b) You must cause any modified files to carry prominent notices stating that You changed the files; and (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License. 5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions. 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages. 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS APPENDIX: How to apply the Apache License to your work. To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright 2011 Eric Haddad Koenig Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package com.all.client.model; import java.io.Serializable; import java.sql.SQLException; import java.util.List; import java.util.Map; import javax.persistence.Entity; import javax.sql.DataSource; import org.apache.commons.lang.StringUtils; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.hibernate.Criteria; import org.hibernate.HibernateException; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.annotations.Cache; import org.hibernate.annotations.CacheConcurrencyStrategy; import org.hibernate.criterion.Restrictions; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.orm.hibernate3.HibernateCallback; import org.springframework.orm.hibernate3.HibernateTemplate; import org.springframework.stereotype.Service; import com.all.shared.model.ModelDao; import com.all.shared.model.Playlist; import com.all.shared.model.SyncEventEntity; import com.all.shared.model.Track; @Service @Cache(usage = CacheConcurrencyStrategy.READ_WRITE) public class LocalModelDao implements ModelDao { private HibernateTemplate hibernateTemplate; private DataSource dataSource; private final Log log = LogFactory.getLog(this.getClass()); @Autowired public void setHibernateTemplate(@Qualifier("userHibernateTemplate") HibernateTemplate hibernateTemplate) { this.hibernateTemplate = hibernateTemplate; // The following lines make hibernate to perform EVERY query using // ehcache this.hibernateTemplate.setCacheQueries(true); } public HibernateTemplate getHibernateTemplate() { return hibernateTemplate; } @Autowired @Qualifier("userDatasource") public void setDataSource(DataSource dataSource) { this.dataSource = dataSource; } @Override public <T> T delete(T object) { try { hibernateTemplate.delete(object); } catch (Exception ex) { log.error("Could not delete object " + object, ex); } return object; } @Override public <T> T merge(T object) { try { hibernateTemplate.merge(object); } catch (Exception e) { log.error("Could not merge object " + object, e); } return object; } @Override public <T> void refresh(T object) { try { hibernateTemplate.refresh(object); } catch (Exception e) { log.warn("Could not refresh " + object); } } public <T> void evict(T object) { try { hibernateTemplate.evict(object); } catch (Exception e) { log.error("Could not evict object " + object, e); } } @Override public <T> T update(T object) { try { hibernateTemplate.update(object); } catch (Exception e) { log.error("Could not update object " + object, e); } return object; } @Override public <T> T save(T object) { try { hibernateTemplate.save(object); } catch (Exception ex) { log.error("Could not save object " + object, ex); } return object; } @Override public <T> T saveOrUpdate(T object) { try { hibernateTemplate.saveOrUpdate(object); } catch (Exception e) { log.error("Could not save or update object " + object, e); } return object; } public <T> T findById(Class<T> objectClass, Serializable id) { return hibernateTemplate.get(objectClass, id); } public LocalPlaylist findPlaylistById(Serializable id) { return (LocalPlaylist) hibernateTemplate.get(LocalPlaylist.class, id); } @SuppressWarnings("unchecked") public <T> T findByEntityName(String entityName, Serializable id) { return (T) hibernateTemplate.get(entityName, id); } private static final int MAX_QUERY_RESULTS = 100; @SuppressWarnings("unchecked") static class TrackHibernateCallback implements HibernateCallback { private final String sentence; public TrackHibernateCallback(String query) { this.sentence = query; } public Object doInHibernate(Session sess) throws SQLException { Query query = sess.createQuery(sentence); query.setMaxResults(MAX_QUERY_RESULTS); return query.list(); } } @SuppressWarnings("unchecked") public Track findByHashcode(String hashcode) { List<Track> tracks = (List<Track>) hibernateTemplate.find("from Track where hashcode='" + hashcode + "'"); return tracks.isEmpty() ? null : tracks.get(0); } @SuppressWarnings("unchecked") public List<SyncEventEntity> findAllSyncEvents(String email) { return (List<SyncEventEntity>) hibernateTemplate.find("from SyncEventEntity where email = '" + email + "'"); } @SuppressWarnings("unchecked") public List<Playlist> findAllWithRootParent() { return (List<Playlist>) hibernateTemplate.find("FROM Playlist WHERE folderId=NULL"); } @SuppressWarnings("unchecked") @Override public <T> List<T> findAll(Class<T> objectClass) { String hql = "FROM " + objectClass.getSimpleName(); return hibernateTemplate.find(hql); } public <T> List<T> loadAll(Class<T> clazz) { return hibernateTemplate.loadAll(clazz); } @SuppressWarnings("unchecked") @Override public List<Track> findTracks(String query) { return hibernateTemplate.find(query); } @SuppressWarnings("unchecked") public List<Track> findTracks(final List<String> hashcodes) { return hibernateTemplate.executeFind(new HibernateCallback<List<LocalTrack>>() { @Override public List<LocalTrack> doInHibernate(Session session) throws SQLException { Criteria criteria = session.createCriteria(LocalTrack.class); criteria.add(Restrictions.in("hashcode", hashcodes)); return criteria.list(); } }); } public TrackFile findTrackFileByPath(final String path) { return hibernateTemplate.execute(new HibernateCallback<TrackFile>() { @Override public TrackFile doInHibernate(Session session) throws SQLException { Criteria criteria = session.createCriteria(TrackFile.class); criteria.add(Restrictions.eq("filename", path)); return (TrackFile) criteria.uniqueResult(); } }); } public long count(final Class<?> objectClass) { return hibernateTemplate.execute(new HibernateCallback<Long>() { @Override public Long doInHibernate(Session session) throws SQLException { String entityName = objectClass.getSimpleName(); if (objectClass.isAnnotationPresent(Entity.class)) { Entity entity = objectClass.getAnnotation(Entity.class); if (StringUtils.isNotEmpty(entity.name())) { entityName = entity.name(); } } Query q = session.createQuery("select count(*) from " + entityName); return Long.valueOf(q.uniqueResult().toString()); } }); } @SuppressWarnings("unchecked") public int count(final String hql) { return ((Long) hibernateTemplate.execute(new HibernateCallback() { @Override public Object doInHibernate(Session session) throws SQLException { Query q = session.createQuery("select count(*) " + hql); return q.uniqueResult(); } })).intValue(); } @SuppressWarnings("unchecked") public int countLooseTracks() { return ((Integer) hibernateTemplate.execute(new HibernateCallback() { @Override public Object doInHibernate(Session session) throws SQLException { Query q = session.createSQLQuery("SELECT COUNT (track.hashcode) looseTracks " + " FROM Track track LEFT JOIN PlaylistTrack playlistTrack ON playlistTrack.trackfk = track.hashcode " + " WHERE playlistTrack.id is null "); return q.uniqueResult(); } })).intValue(); } public Object find(final String hql, final Map<String, Object> values) { return findAll(hql, values, true); } @SuppressWarnings("unchecked") public Object findAll(final String hql, final Map<String, Object> values, final boolean includeAllResults) { Object result = hibernateTemplate.execute(new HibernateCallback() { @Override public Object doInHibernate(Session session) throws SQLException { Query q = session.createQuery(hql); q.setCacheable(true); if (values != null) { for (String param : values.keySet()) { q.setParameter(param, values.get(param)); } } if (includeAllResults) { return q.list(); } else { return q.uniqueResult(); } } }); return result; } @SuppressWarnings("unchecked") public List<Playlist> findAllUntitled() { List<Playlist> playlists = (List<Playlist>) hibernateTemplate.executeFind(new HibernateCallback() { public Object doInHibernate(Session sess) throws SQLException { Criteria crit = sess.createCriteria(LocalPlaylist.class); crit.add(Restrictions.ilike("name", "%Untitled Playlist%")); crit.setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY); return crit.list(); } }); return playlists; } @SuppressWarnings("unchecked") public List<Track> findByKeywordInName(final String keyword) { return (List<Track>) hibernateTemplate.executeFind(new HibernateCallback() { public Object doInHibernate(Session sess) throws SQLException { Criteria crit = sess.createCriteria(Track.class); crit.add(Restrictions.ilike("name", keyword)); return crit.list(); } }); } @SuppressWarnings("unchecked") public List<Track> findMostPlayed() { String query = "from Track t where t.playcount>0 order by t.playcount desc"; return (List<Track>) hibernateTemplate.executeFind(new TrackHibernateCallback(query)); } @SuppressWarnings("unchecked") public List<Track> findRecentlyAdded() { String query = "from Track t order by t.dateAdded desc"; return (List<Track>) hibernateTemplate.executeFind(new TrackHibernateCallback(query)); } @SuppressWarnings("unchecked") public List<Track> findRecentlyPlayed() { String query = "from Track t where t.playcount>0 order by t.lastPlayed desc"; return (List<Track>) hibernateTemplate.executeFind(new TrackHibernateCallback(query)); } @SuppressWarnings("unchecked") public List<PlaylistTrack> findPlaylistTracks(final Track track) { return hibernateTemplate.executeFind(new HibernateCallback<List<PlaylistTrack>>() { @Override public List<PlaylistTrack> doInHibernate(Session session) throws HibernateException, SQLException { Criteria criteria = session.createCriteria(PlaylistTrack.class); criteria.add(Restrictions.eq("track", track)); return (List<PlaylistTrack>) criteria.list(); } }); } @SuppressWarnings("unchecked") public Download findDownloadByTrackId(String trackId) { List<Download> downloads = hibernateTemplate.find("from Download where trackId='" + trackId + "'"); return downloads.isEmpty() ? null : downloads.get(0); } public void deleteAll(Class<?> clazz) { hibernateTemplate.deleteAll(loadAll(clazz)); } /** * Do not use HQL, OQL or SQL for saving, deleting or updating because the * DaoNotifier won't be able to catch that events, and sync will be in trouble * and finally having unstable libraries. * * @TODO This case is needed for update only one playlisttrack and not the * hole playlisttrack which belongs to a specific playlist and there is * no problem because playlisttrack is not syncAble. */ @SuppressWarnings("unchecked") public int executeSqlUpdate(final String sql, final Map<String, Object> values) { return (Integer) hibernateTemplate.execute(new HibernateCallback() { @Override public Object doInHibernate(Session session) throws SQLException { Query q = session.createSQLQuery(sql); if (values != null) { for (String param : values.keySet()) { q.setParameter(param, values.get(param)); } } return q.executeUpdate(); } }); } public void flush() { this.hibernateTemplate.flush(); } public void close() { flush(); hibernateTemplate.getSessionFactory().close(); try { dataSource.getConnection().close(); } catch (SQLException ignore) { log.warn(ignore, ignore); } } @SuppressWarnings("unchecked") @Override public <T> List<T> findByExample(T clazz) { return (List<T>) hibernateTemplate.findByExample(clazz); } @SuppressWarnings("unchecked") public Object deleteSyncEventEntities(Long timestamp) { final String sql = "delete from SyncEventEntity where timestamp = " + timestamp; return hibernateTemplate.execute(new HibernateCallback() { @Override public Object doInHibernate(Session session) throws SQLException { return session.createSQLQuery(sql).executeUpdate(); } }); } @Override public void saveAll(final List<?> values) { try { hibernateTemplate.execute(new HibernateCallback<Void>() { @Override public Void doInHibernate(Session session) throws SQLException { for (Object value : values) { session.save(value); } return null; } }); } catch (Exception e) { log.error(e, e); } } @SuppressWarnings("unchecked") public List<Track> findRecentlyDownloaded() { String query = "from Track t where t.dateDownloaded is not NULL order by t.dateDownloaded desc"; return (List<Track>) hibernateTemplate.executeFind(new TrackHibernateCallback(query)); } public LocalTrack findByUrnSha1(final String hashcode) { return hibernateTemplate.execute(new HibernateCallback<LocalTrack>() { @Override public LocalTrack doInHibernate(Session session) throws HibernateException, SQLException { Criteria criteria = session.createCriteria(LocalTrack.class); criteria.add(Restrictions.like("downloadString", "%urnsha1=" + hashcode + "%")); return (LocalTrack) criteria.uniqueResult(); } }); } }