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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 | import java.io.Serializable;import java.util.List;import org.hibernate.Criteria;import org.hibernate.Query;import org.hibernate.SQLQuery;import org.hibernate.criterion.Criterion;/** * * Hibernate Generic DAO Interface * * @param <T> Entity * @param <PK> Primary Key */public interface GenericDaoIf<T, PK extends Serializable> { /** * Get entity by primary key * @param id Primary key * @return Entity object */ public T get(final PK id); /** * Load entity by primary key * @param id Primary key * @return Entity object */ public T load(final PK id); /** * Remove entity from session, changes to this entity will * not be synchronized with the database * @param entity The object to be evicted */ public void evict(T entity); /** * Save entity * @param entity The object to be saved * @return The generated identifier */ public PK save(T entity); /** * Update entity * @param entity The object to be updated */ public void update(T entity); /** * Save or update entity * @param entity The object to be save or update */ public void saveOrUpdate(T entity); /** * Update entity's not-null property * (this entity must have a primary key property "id") * @param entity The object to be updated */ public void updateSelective(T entity); /** * Merge entity * @param entity The object to be merged into database * @return The persistent object */ public T merge(T entity); /** * Delete entity (actually, delete by primary key) * @param entity The object to be deleted */ public void delete(T entity); /** * Delete entity by primary key, first get then delete * @param id Primary key */ public void delete(PK id); /** * Find all entities * @return Query result list */ public List<T> findAll(); /** * Find entities by page * @param page Paging object * @return Paging query result, Comes with a results list */ public Page<T> findAll(Page<T> page); /** * Press the HQL Query object list * @param hql * HQL statement * @param values * Number of variable parameters * @return Query result list */ public List<T> find(String hql, Object... values); /** * Press the SQL Query object list * @param sql * SQL statement * @param values * Number of variable parameters * @return Query result list */ public List<T> findBySql(String sql, Object... values); /** * Press the HQL query paging . * @param page * Paging parameters . * @param hql * HQL statement . * @param values * Number of variable parameters . * @return Paging query results ,Comes with a results list . */ public Page<T> find(Page<T> page, String hql, Object... values); /** * Press the SQL query paging . * @param page * Paging parameters . * @param sql * SQL statement . * @param values * Number of variable parameters . * @return Paging query results ,Comes with a results list . */ public Page<T> findBySql(Page<T> page, String sql, Object... values); /** * Press the HQL query only object * @param hql * HQL statement * @param values * Number of variable parameters * @return A single instance that matches the query, or null if the query returns no results */ public Object findUnique(String hql, Object... values); /** * Press the SQL query only object * @param sql * SQL statement * @param values * Number of variable parameters * @return A single instance that matches the query, or null if the query returns no results */ public Object findUniqueBySql(String sql, Object... values); /** * According to the Criterion query object list . * @param criterion * Number of variable Criterion . * @return Query result list */ public List<T> findByCriteria(Criterion... criterion); /** * According to the Criterion paging query . * @param page * Paging parameters .Including the pageSize, firstResult, orderBy, asc, autoCount . * Where firstResult can be directly specified ,You can also specify pageNo . autoCountSpecifies whether dynamic gets total number of results . * @param criterion * Number of variable criterion . * @return Paging query results .Comes with a results list and all query parameters . */ public Page<T> findByCriteria(Page<T> page, Criterion... criterion); /** * Find a list of objects by property . * @param propertyName Property name of the entity * @param value Property value * @return Query result list */ public List<T> findByProperty(String propertyName, Object value); /** * Find unique object by property . * @param propertyName Property name of the entity * @param value Property value * @return A single instance that matches the query, or null if the query returns no */ public T findUniqueByProperty(String propertyName, Object value); /** * Determine the object's property value is unique within the database . * @param propertyName Property name of the entity * @param newValue New property value */ public boolean isPropertyUnique(String propertyName, Object newValue); /** * Depending on the query function and argument list to create a Query object ,Subsequent to processing ,The auxiliary function . * @param queryString HQL string * @param values Number of variable parameters * @return Query object */ public Query createQuery(String queryString, Object... values); /** * Depending on the query function and argument list to create a SQL Query object ,Subsequent to processing ,The auxiliary function . * @param queryString SQL string * @param values Number of variable parameters * @return SQL query object */ public SQLQuery createSQLQuery(String queryString, Object... values); /** * According to the Criterion conditions create Criteria ,Subsequent to processing ,The auxiliary function . * @param criterions Number of variable criterion * @return A criteria */ public Criteria createCriteria(Criterion... criterions); /** * Count HQL query result * @param hql HQL statement * @param values Number of variable parameters * @return Result count */ public long countQueryResult(String hql, Object... values); /** * Count SQL query result * @param sql HQL statement * @param values Number of variable parameters * @return Result count */ public long countSQLQueryResult(String sql, Object... values); /** * Through this count query to obtain the total number of objects . * @param page Paging object * @param c Query criteria * @return The total number of objects of the query result. */ public long countCriteriaResult(Page<T> page, Criteria c); /** * Save entities in batch * @param entities The objects to be saved * @param batchSize The number of every session flush * @return Successful save count */ public int batchSave(List<T> entities, int batchSize); /** * Update entities in batch * @param entities The objects to be updated * @param batchSize The number of every session flush * @return Successful update count */ public int batchUpdate(List<T> entities, int batchSize); /** * Save or update entities in batch * @param entities The objects to be saved or updated * @param batchSize The number of every session flush * @return Successful save count or update count */ public int batchSaveOrUpdate(List<T> entities, int batchSize); /** * Update entities (not-null property) in batch * @param entities The objects to be updated * @param batchSize The number of every session flush * @return Successful update count */ public int batchUpdateSelective(List<T> entities, int batchSize); /** * Merge entities in batch * @param entities The objects to be merged * @param batchSize The number of every session flush * @return Successful merge count */ public int batchMerge(List<T> entities, int batchSize); /** * Delete entities in batch * @param entities The objects to be deleted * @param batchSize The number of every session flush * @return successful delete count */ public int batchDelete(List<T> entities, int batchSize); } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 | import java.io.Serializable;import java.lang.reflect.Field;import java.lang.reflect.ParameterizedType;import java.util.ArrayList;import java.util.List;import org.apache.commons.lang.StringUtils;import org.hibernate.Criteria;import org.hibernate.HibernateException;import org.hibernate.Query;import org.hibernate.SQLQuery;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.criterion.CriteriaSpecification;import org.hibernate.criterion.Criterion;import org.hibernate.criterion.Order;import org.hibernate.criterion.Projection;import org.hibernate.criterion.Projections;import org.hibernate.criterion.Restrictions;import org.hibernate.impl.CriteriaImpl;import org.hibernate.impl.CriteriaImpl.OrderEntry;import org.hibernate.transform.ResultTransformer;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.util.Assert;import org.springframework.util.ReflectionUtils;import com.alan.mvnapp.mvn_app.dao.GenericDaoIf;import com.alan.mvnapp.mvn_app.dao.Page;/** * * Hibernate Generic DAO Implementation * * @param <T> Entity * @param <PK> Primary Key */public class GenericDaoImpl<T, PK extends Serializable> implements GenericDaoIf<T, PK> { protected Logger logger = LoggerFactory.getLogger(getClass()); protected SessionFactory sessionFactory; protected Class<?> entityClass; public GenericDaoImpl() { this.entityClass = (Class<?>) ((ParameterizedType) getClass() .getGenericSuperclass()).getActualTypeArguments()[0]; } public GenericDaoImpl(SessionFactory sessionFactory, Class<T> entityClass) { this.sessionFactory = sessionFactory; this.entityClass = entityClass; } @SuppressWarnings("unchecked") public T get(final PK id) { return (T) sessionFactory.getCurrentSession().get(entityClass, id); } @SuppressWarnings("unchecked") public T load(final PK id) { return (T) sessionFactory.getCurrentSession().load(entityClass, id); } public void evict(T entity) { sessionFactory.getCurrentSession().evict(entity); } @SuppressWarnings("unchecked") public PK save(T entity) { Assert.notNull(entity); PK pk = (PK) sessionFactory.getCurrentSession().save(entity); logger.info("save entity: {}", entity); return pk; } public void update(T entity) { Assert.notNull(entity); sessionFactory.getCurrentSession().update(entity); logger.info("update entity: {}", entity); } public void saveOrUpdate(T entity) { Assert.notNull(entity); sessionFactory.getCurrentSession().saveOrUpdate(entity); logger.info("save or update entity: {}", entity); } public void updateSelective(T entity) { Assert.notNull(entity); Field[] fields = entity.getClass().getDeclaredFields(); List<String> params = new ArrayList<String>(); List<Object> values = new ArrayList<Object>(); for(Field field : fields) { String fieldName = field.getName(); field.setAccessible(true); Object value = ReflectionUtils.getField(field, entity); if(value != null) { params.add(fieldName); values.add(value); } } if(!params.isEmpty()) { StringBuffer sb = new StringBuffer("update " + entityClass.getSimpleName() + " set "); for(int i = 0; i < params.size(); i++) { sb.append(params.get(i) + " = ? "); if(i < params.size() - 1) { sb.append(", "); } } Field pkField = ReflectionUtils.findField(entityClass, "id"); Assert.notNull(pkField); pkField.setAccessible(true); sb.append(" where id = ? "); values.add(ReflectionUtils.getField(pkField, entity)); createQuery(sb.toString(), values.toArray()).executeUpdate(); logger.info("update entity selecitive: {}" + entity); } } @SuppressWarnings("unchecked") public T merge(T entity) { Assert.notNull(entity); T t = (T) sessionFactory.getCurrentSession().merge(entity); logger.info("merge entity: {}", entity); return t; } public void delete(T entity) { Assert.notNull(entity); sessionFactory.getCurrentSession().delete(entity); logger.info("delete entity: {}", entity); } public void delete(PK id) { Assert.notNull(id); delete(get(id)); } public List<T> findAll() { return findByCriteria(); } public Page<T> findAll(Page<T> page) { return findByCriteria(page); } @SuppressWarnings("unchecked") public List<T> find(String hql, Object... values) { return (List<T>)createQuery(hql, values).list(); } @SuppressWarnings("unchecked") public List<T> findBySql(String sql, Object... values) { return (List<T>)createSQLQuery(sql, values).addEntity(entityClass).list(); } @SuppressWarnings("unchecked") public Page<T> find(Page<T> page, String hql, Object... values) { Assert.notNull(page); if(page.isAutoCount()) { page.setTotalCount(countQueryResult(hql, values)); } Query q = createQuery(hql, values); if(page.isFirstSetted()) { q.setFirstResult(page.getFirst()); } if(page.isPageSizeSetted()) { q.setMaxResults(page.getPageSize()); } page.setResult((List<T>)q.list()); return page; } @SuppressWarnings("unchecked") public Page<T> findBySql(Page<T> page, String sql, Object... values) { Assert.notNull(page); if(page.isAutoCount()) { page.setTotalCount(countSQLQueryResult(sql, values)); } SQLQuery q = createSQLQuery(sql, values); if(page.isFirstSetted()) { q.setFirstResult(page.getFirst()); } if(page.isPageSizeSetted()) { q.setMaxResults(page.getPageSize()); } page.setResult((List<T>)q.addEntity(entityClass).list()); return page; } public Object findUnique(String hql, Object... values) { return createQuery(hql, values).uniqueResult(); } public Object findUniqueBySql(String sql, Object... values) { return createSQLQuery(sql, values).addEntity(entityClass).uniqueResult(); } @SuppressWarnings("unchecked") public List<T> findByCriteria(Criterion... criterion) { return (List<T>)createCriteria(criterion).list(); } @SuppressWarnings("unchecked") public Page<T> findByCriteria(Page<T> page, Criterion... criterion) { Assert.notNull(page); Criteria c = createCriteria(criterion); if(page.isAutoCount()) { page.setTotalCount(countCriteriaResult(page, c)); } if(page.isFirstSetted()) { c.setFirstResult(page.getFirst()); } if(page.isPageSizeSetted()) { c.setMaxResults(page.getPageSize()); } if(page.isOrderBySetted()) { if(page.getOrder().toUpperCase().equals("AES")) { c.addOrder(Order.asc(page.getOrderBy())); } else { c.addOrder(Order.desc(page.getOrderBy())); } } page.setResult((List<T>)c.list()); return page; } @SuppressWarnings("unchecked") public List<T> findByProperty(String propertyName, Object value) { Assert.hasText(propertyName); return (List<T>) createCriteria(Restrictions.eq(propertyName, value)).list(); } @SuppressWarnings("unchecked") public T findUniqueByProperty(String propertyName, Object value) { Assert.hasText(propertyName); return (T)createCriteria(Restrictions.eq(propertyName, value)).uniqueResult(); } public boolean isPropertyUnique(String propertyName, Object newValue) { if(newValue == null) return false; try { Object obj = findUniqueByProperty(propertyName, newValue); return obj == null; } catch (HibernateException e) { return false; } } public Query createQuery(String queryString, Object... values) { Assert.hasText(queryString); Query queryObject = sessionFactory.getCurrentSession().createQuery(queryString); if(values != null) { for(int i = 0; i < values.length; i++) { queryObject.setParameter(i, values[i]); } } return queryObject; } public SQLQuery createSQLQuery(String queryString, Object... values) { Assert.hasText(queryString); SQLQuery queryObject = sessionFactory.getCurrentSession().createSQLQuery(queryString); if(values != null) { for(int i = 0; i < values.length; i++) { queryObject.setParameter(i, values[i]); } } return queryObject; } public Criteria createCriteria(Criterion... criterions) { Criteria criteria = sessionFactory.getCurrentSession().createCriteria(entityClass); for(Criterion c : criterions) { criteria.add(c); } return criteria; } public long countQueryResult(String hql, Object... values) { hql = hql.replaceAll(" [Ff][Rr][Oo][Mm] ", " from "); String str = hql.toLowerCase(); if(!StringUtils.contains(str, "group by") && !StringUtils.contains(str, "union") && !StringUtils.contains(str, "minus") && !StringUtils.contains(str, "intersect") && !StringUtils.contains(StringUtils.substringAfter(str, "from"), "(") ) { str = "select count(*) from " + StringUtils.substringAfter(hql, "from"); return ((Number)createQuery(hql, values).iterate().next()).longValue(); } else { throw new HibernateException("not support this HQL : " + hql); } } public long countSQLQueryResult(String sql, Object... values) { String str = sql.toLowerCase(); String beforeFrom = StringUtils.substringBefore(str, "from"); if(StringUtils.countMatches(beforeFrom, "(") != StringUtils.countMatches(beforeFrom, ")") || StringUtils.contains(str, "group by") || StringUtils.contains(str, "union") || StringUtils.contains(str, "minus") || StringUtils.contains(str, "intersect")) { str = "select count(*) from (" + sql + ") as tmp"; } else { str = "select count(*) from " + StringUtils.substringAfter(str, "from"); } Object ret = createSQLQuery(str, values).uniqueResult(); return (ret == null ? 0 : ((Number)ret).longValue()); } @SuppressWarnings("unchecked") public long countCriteriaResult(Page<T> page, Criteria c) { CriteriaImpl cimpl = (CriteriaImpl)c; // First Projection, ResultTransformer, OrderBy out ,Empty after a three Count operations Projection projection = cimpl.getProjection(); ResultTransformer transformer = cimpl.getResultTransformer(); List<CriteriaImpl.OrderEntry> orderEntries = null; try { Field orderEntriesField = cimpl.getClass().getDeclaredField("orderEntries"); orderEntriesField.setAccessible(true); orderEntries = (List<OrderEntry>) ReflectionUtils.getField( orderEntriesField, cimpl); ReflectionUtils.setField( orderEntriesField, cimpl, new ArrayList<OrderEntry>()); } catch (Exception e) { logger.error("Not may throw an exception :{}", e.getMessage()); } // Do Count query long totalCount = (Long) c.setProjection(Projections.rowCount()) .uniqueResult(); if (totalCount < 1) return -1; // Will the Projection and OrderBy before conditions back to go back c.setProjection(projection); if (projection == null) { c.setResultTransformer(CriteriaSpecification.ROOT_ENTITY); } if (transformer != null) { c.setResultTransformer(transformer); } try { Field orderEntriesField = cimpl.getClass().getDeclaredField("orderEntries"); orderEntriesField.setAccessible(true); ReflectionUtils.setField(orderEntriesField, cimpl, orderEntries); } catch (Exception e) { logger.error("Not may throw an exception :{}", e.getMessage()); } return totalCount; } private int tuneBatchSize(int batchSize) { if(batchSize < 20) { batchSize = 20; } else if(batchSize > 200) { batchSize = 200; } return batchSize; } public int batchSave(List<T> entities, int batchSize) { Assert.notEmpty(entities); batchSize = tuneBatchSize(batchSize); int count = 0; Session session = sessionFactory.getCurrentSession(); for(int i = 0; i < entities.size(); i++) { session.save(entities.get(i)); if(i % batchSize == 0 || i == entities.size() - 1) { session.flush(); session.clear(); } count++; } return count; } public int batchUpdate(List<T> entities, int batchSize) { Assert.notEmpty(entities); batchSize = tuneBatchSize(batchSize); int count = 0; Session session = sessionFactory.getCurrentSession(); for(int i = 0; i < entities.size(); i++) { session.update(entities.get(i)); if(i % batchSize == 0 || i == entities.size() - 1) { session.flush(); session.clear(); } count++; } return count; } public int batchSaveOrUpdate(List<T> entities, int batchSize) { Assert.notEmpty(entities); batchSize = tuneBatchSize(batchSize); int count = 0; Session session = sessionFactory.getCurrentSession(); for(int i = 0; i < entities.size(); i++) { session.saveOrUpdate(entities.get(i)); if(i % batchSize == 0 || i == entities.size() - 1) { session.flush(); session.clear(); } count++; } return count; } public int batchUpdateSelective(List<T> entities, int batchSize) { Assert.notEmpty(entities); batchSize = tuneBatchSize(batchSize); int count = 0; Session session = sessionFactory.getCurrentSession(); for(int i = 0; i < entities.size(); i++) { updateSelective(entities.get(i)); if(i % batchSize == 0 || i == entities.size() - 1) { session.flush(); session.clear(); } count++; } return count; } public int batchMerge(List<T> entities, int batchSize) { Assert.notEmpty(entities); batchSize = tuneBatchSize(batchSize); int count = 0; Session session = sessionFactory.getCurrentSession(); for(int i = 0; i < entities.size(); i++) { session.merge(entities.get(i)); if(i % batchSize == 0 || i == entities.size() - 1) { session.flush(); session.clear(); } count++; } return count; } public int batchDelete(List<T> entities, int batchSize) { Assert.notEmpty(entities); batchSize = tuneBatchSize(batchSize); int count = 0; Session session = sessionFactory.getCurrentSession(); for(int i = 0; i < entities.size(); i++) { session.delete(entities.get(i)); if(i % batchSize == 0 || i == entities.size() - 1) { session.flush(); session.clear(); } count++; } return count; }} |