Java tutorial
/** * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved. * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more * details. */ package com.asu.poly.iProjects.student.service.persistence; import com.asu.poly.iProjects.student.NoSuchstudentException; import com.asu.poly.iProjects.student.model.impl.studentImpl; import com.asu.poly.iProjects.student.model.impl.studentModelImpl; import com.asu.poly.iProjects.student.model.student; import com.liferay.portal.NoSuchModelException; import com.liferay.portal.kernel.bean.BeanReference; import com.liferay.portal.kernel.cache.CacheRegistryUtil; import com.liferay.portal.kernel.dao.orm.EntityCacheUtil; import com.liferay.portal.kernel.dao.orm.FinderCacheUtil; import com.liferay.portal.kernel.dao.orm.FinderPath; import com.liferay.portal.kernel.dao.orm.Query; import com.liferay.portal.kernel.dao.orm.QueryUtil; import com.liferay.portal.kernel.dao.orm.Session; import com.liferay.portal.kernel.exception.SystemException; import com.liferay.portal.kernel.log.Log; import com.liferay.portal.kernel.log.LogFactoryUtil; import com.liferay.portal.kernel.util.GetterUtil; import com.liferay.portal.kernel.util.InstanceFactory; import com.liferay.portal.kernel.util.OrderByComparator; import com.liferay.portal.kernel.util.PropsKeys; import com.liferay.portal.kernel.util.PropsUtil; import com.liferay.portal.kernel.util.StringBundler; import com.liferay.portal.kernel.util.StringUtil; import com.liferay.portal.model.CacheModel; import com.liferay.portal.model.ModelListener; import com.liferay.portal.service.persistence.BatchSessionUtil; import com.liferay.portal.service.persistence.ResourcePersistence; import com.liferay.portal.service.persistence.UserPersistence; import com.liferay.portal.service.persistence.impl.BasePersistenceImpl; import java.io.Serializable; import java.util.ArrayList; import java.util.Collections; import java.util.List; /** * The persistence implementation for the student service. * * <p> * Caching information and settings can be found in <code>portal.properties</code> * </p> * * @author Shruthi * @see studentPersistence * @see studentUtil * @generated */ public class studentPersistenceImpl extends BasePersistenceImpl<student> implements studentPersistence { /* * NOTE FOR DEVELOPERS: * * Never modify or reference this class directly. Always use {@link studentUtil} to access the student persistence. Modify <code>service.xml</code> and rerun ServiceBuilder to regenerate this class. */ public static final String FINDER_CLASS_NAME_ENTITY = studentImpl.class.getName(); public static final String FINDER_CLASS_NAME_LIST_WITH_PAGINATION = FINDER_CLASS_NAME_ENTITY + ".List1"; public static final String FINDER_CLASS_NAME_LIST_WITHOUT_PAGINATION = FINDER_CLASS_NAME_ENTITY + ".List2"; public static final FinderPath FINDER_PATH_WITH_PAGINATION_FIND_ALL = new FinderPath( studentModelImpl.ENTITY_CACHE_ENABLED, studentModelImpl.FINDER_CACHE_ENABLED, studentImpl.class, FINDER_CLASS_NAME_LIST_WITH_PAGINATION, "findAll", new String[0]); public static final FinderPath FINDER_PATH_WITHOUT_PAGINATION_FIND_ALL = new FinderPath( studentModelImpl.ENTITY_CACHE_ENABLED, studentModelImpl.FINDER_CACHE_ENABLED, studentImpl.class, FINDER_CLASS_NAME_LIST_WITHOUT_PAGINATION, "findAll", new String[0]); public static final FinderPath FINDER_PATH_COUNT_ALL = new FinderPath(studentModelImpl.ENTITY_CACHE_ENABLED, studentModelImpl.FINDER_CACHE_ENABLED, Long.class, FINDER_CLASS_NAME_LIST_WITHOUT_PAGINATION, "countAll", new String[0]); /** * Caches the student in the entity cache if it is enabled. * * @param student the student */ public void cacheResult(student student) { EntityCacheUtil.putResult(studentModelImpl.ENTITY_CACHE_ENABLED, studentImpl.class, student.getPrimaryKey(), student); student.resetOriginalValues(); } /** * Caches the students in the entity cache if it is enabled. * * @param students the students */ public void cacheResult(List<student> students) { for (student student : students) { if (EntityCacheUtil.getResult(studentModelImpl.ENTITY_CACHE_ENABLED, studentImpl.class, student.getPrimaryKey()) == null) { cacheResult(student); } else { student.resetOriginalValues(); } } } /** * Clears the cache for all students. * * <p> * The {@link com.liferay.portal.kernel.dao.orm.EntityCache} and {@link com.liferay.portal.kernel.dao.orm.FinderCache} are both cleared by this method. * </p> */ @Override public void clearCache() { if (_HIBERNATE_CACHE_USE_SECOND_LEVEL_CACHE) { CacheRegistryUtil.clear(studentImpl.class.getName()); } EntityCacheUtil.clearCache(studentImpl.class.getName()); FinderCacheUtil.clearCache(FINDER_CLASS_NAME_ENTITY); FinderCacheUtil.clearCache(FINDER_CLASS_NAME_LIST_WITH_PAGINATION); FinderCacheUtil.clearCache(FINDER_CLASS_NAME_LIST_WITHOUT_PAGINATION); } /** * Clears the cache for the student. * * <p> * The {@link com.liferay.portal.kernel.dao.orm.EntityCache} and {@link com.liferay.portal.kernel.dao.orm.FinderCache} are both cleared by this method. * </p> */ @Override public void clearCache(student student) { EntityCacheUtil.removeResult(studentModelImpl.ENTITY_CACHE_ENABLED, studentImpl.class, student.getPrimaryKey()); FinderCacheUtil.clearCache(FINDER_CLASS_NAME_LIST_WITH_PAGINATION); FinderCacheUtil.clearCache(FINDER_CLASS_NAME_LIST_WITHOUT_PAGINATION); } @Override public void clearCache(List<student> students) { FinderCacheUtil.clearCache(FINDER_CLASS_NAME_LIST_WITH_PAGINATION); FinderCacheUtil.clearCache(FINDER_CLASS_NAME_LIST_WITHOUT_PAGINATION); for (student student : students) { EntityCacheUtil.removeResult(studentModelImpl.ENTITY_CACHE_ENABLED, studentImpl.class, student.getPrimaryKey()); } } /** * Creates a new student with the primary key. Does not add the student to the database. * * @param studentgeninfoid the primary key for the new student * @return the new student */ public student create(long studentgeninfoid) { student student = new studentImpl(); student.setNew(true); student.setPrimaryKey(studentgeninfoid); return student; } /** * Removes the student with the primary key from the database. Also notifies the appropriate model listeners. * * @param studentgeninfoid the primary key of the student * @return the student that was removed * @throws com.asu.poly.iProjects.student.NoSuchstudentException if a student with the primary key could not be found * @throws SystemException if a system exception occurred */ public student remove(long studentgeninfoid) throws NoSuchstudentException, SystemException { return remove(Long.valueOf(studentgeninfoid)); } /** * Removes the student with the primary key from the database. Also notifies the appropriate model listeners. * * @param primaryKey the primary key of the student * @return the student that was removed * @throws com.asu.poly.iProjects.student.NoSuchstudentException if a student with the primary key could not be found * @throws SystemException if a system exception occurred */ @Override public student remove(Serializable primaryKey) throws NoSuchstudentException, SystemException { Session session = null; try { session = openSession(); student student = (student) session.get(studentImpl.class, primaryKey); if (student == null) { if (_log.isWarnEnabled()) { _log.warn(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY + primaryKey); } throw new NoSuchstudentException(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY + primaryKey); } return remove(student); } catch (NoSuchstudentException nsee) { throw nsee; } catch (Exception e) { throw processException(e); } finally { closeSession(session); } } @Override protected student removeImpl(student student) throws SystemException { student = toUnwrappedModel(student); Session session = null; try { session = openSession(); BatchSessionUtil.delete(session, student); } catch (Exception e) { throw processException(e); } finally { closeSession(session); } clearCache(student); return student; } @Override public student updateImpl(com.asu.poly.iProjects.student.model.student student, boolean merge) throws SystemException { student = toUnwrappedModel(student); boolean isNew = student.isNew(); Session session = null; try { session = openSession(); BatchSessionUtil.update(session, student, merge); student.setNew(false); } catch (Exception e) { throw processException(e); } finally { closeSession(session); } FinderCacheUtil.clearCache(FINDER_CLASS_NAME_LIST_WITH_PAGINATION); if (isNew) { FinderCacheUtil.clearCache(FINDER_CLASS_NAME_LIST_WITHOUT_PAGINATION); } EntityCacheUtil.putResult(studentModelImpl.ENTITY_CACHE_ENABLED, studentImpl.class, student.getPrimaryKey(), student); return student; } protected student toUnwrappedModel(student student) { if (student instanceof studentImpl) { return student; } studentImpl studentImpl = new studentImpl(); studentImpl.setNew(student.isNew()); studentImpl.setPrimaryKey(student.getPrimaryKey()); studentImpl.setStudentgeninfoid(student.getStudentgeninfoid()); studentImpl.setFirstName(student.getFirstName()); studentImpl.setLastName(student.getLastName()); studentImpl.setAsuriteid(student.getAsuriteid()); studentImpl.setDepartment(student.getDepartment()); studentImpl.setLevel(student.getLevel()); studentImpl.setCgpa(student.getCgpa()); studentImpl.setSex(student.getSex()); studentImpl.setPhone(student.getPhone()); studentImpl.setLoggedinuserId(student.getLoggedinuserId()); studentImpl.setCreateDate(student.getCreateDate()); studentImpl.setModifiedDate(student.getModifiedDate()); return studentImpl; } /** * Returns the student with the primary key or throws a {@link com.liferay.portal.NoSuchModelException} if it could not be found. * * @param primaryKey the primary key of the student * @return the student * @throws com.liferay.portal.NoSuchModelException if a student with the primary key could not be found * @throws SystemException if a system exception occurred */ @Override public student findByPrimaryKey(Serializable primaryKey) throws NoSuchModelException, SystemException { return findByPrimaryKey(((Long) primaryKey).longValue()); } /** * Returns the student with the primary key or throws a {@link com.asu.poly.iProjects.student.NoSuchstudentException} if it could not be found. * * @param studentgeninfoid the primary key of the student * @return the student * @throws com.asu.poly.iProjects.student.NoSuchstudentException if a student with the primary key could not be found * @throws SystemException if a system exception occurred */ public student findByPrimaryKey(long studentgeninfoid) throws NoSuchstudentException, SystemException { student student = fetchByPrimaryKey(studentgeninfoid); if (student == null) { if (_log.isWarnEnabled()) { _log.warn(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY + studentgeninfoid); } throw new NoSuchstudentException(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY + studentgeninfoid); } return student; } /** * Returns the student with the primary key or returns <code>null</code> if it could not be found. * * @param primaryKey the primary key of the student * @return the student, or <code>null</code> if a student with the primary key could not be found * @throws SystemException if a system exception occurred */ @Override public student fetchByPrimaryKey(Serializable primaryKey) throws SystemException { return fetchByPrimaryKey(((Long) primaryKey).longValue()); } /** * Returns the student with the primary key or returns <code>null</code> if it could not be found. * * @param studentgeninfoid the primary key of the student * @return the student, or <code>null</code> if a student with the primary key could not be found * @throws SystemException if a system exception occurred */ public student fetchByPrimaryKey(long studentgeninfoid) throws SystemException { student student = (student) EntityCacheUtil.getResult(studentModelImpl.ENTITY_CACHE_ENABLED, studentImpl.class, studentgeninfoid); if (student == _nullstudent) { return null; } if (student == null) { Session session = null; boolean hasException = false; try { session = openSession(); student = (student) session.get(studentImpl.class, Long.valueOf(studentgeninfoid)); } catch (Exception e) { hasException = true; throw processException(e); } finally { if (student != null) { cacheResult(student); } else if (!hasException) { EntityCacheUtil.putResult(studentModelImpl.ENTITY_CACHE_ENABLED, studentImpl.class, studentgeninfoid, _nullstudent); } closeSession(session); } } return student; } /** * Returns all the students. * * @return the students * @throws SystemException if a system exception occurred */ public List<student> findAll() throws SystemException { return findAll(QueryUtil.ALL_POS, QueryUtil.ALL_POS, null); } /** * Returns a range of all the students. * * <p> * Useful when paginating results. Returns a maximum of <code>end - start</code> instances. <code>start</code> and <code>end</code> are not primary keys, they are indexes in the result set. Thus, <code>0</code> refers to the first result in the set. Setting both <code>start</code> and <code>end</code> to {@link com.liferay.portal.kernel.dao.orm.QueryUtil#ALL_POS} will return the full result set. * </p> * * @param start the lower bound of the range of students * @param end the upper bound of the range of students (not inclusive) * @return the range of students * @throws SystemException if a system exception occurred */ public List<student> findAll(int start, int end) throws SystemException { return findAll(start, end, null); } /** * Returns an ordered range of all the students. * * <p> * Useful when paginating results. Returns a maximum of <code>end - start</code> instances. <code>start</code> and <code>end</code> are not primary keys, they are indexes in the result set. Thus, <code>0</code> refers to the first result in the set. Setting both <code>start</code> and <code>end</code> to {@link com.liferay.portal.kernel.dao.orm.QueryUtil#ALL_POS} will return the full result set. * </p> * * @param start the lower bound of the range of students * @param end the upper bound of the range of students (not inclusive) * @param orderByComparator the comparator to order the results by (optionally <code>null</code>) * @return the ordered range of students * @throws SystemException if a system exception occurred */ public List<student> findAll(int start, int end, OrderByComparator orderByComparator) throws SystemException { FinderPath finderPath = null; Object[] finderArgs = new Object[] { start, end, orderByComparator }; if ((start == QueryUtil.ALL_POS) && (end == QueryUtil.ALL_POS) && (orderByComparator == null)) { finderPath = FINDER_PATH_WITHOUT_PAGINATION_FIND_ALL; finderArgs = FINDER_ARGS_EMPTY; } else { finderPath = FINDER_PATH_WITH_PAGINATION_FIND_ALL; finderArgs = new Object[] { start, end, orderByComparator }; } List<student> list = (List<student>) FinderCacheUtil.getResult(finderPath, finderArgs, this); if (list == null) { StringBundler query = null; String sql = null; if (orderByComparator != null) { query = new StringBundler(2 + (orderByComparator.getOrderByFields().length * 3)); query.append(_SQL_SELECT_STUDENT); appendOrderByComparator(query, _ORDER_BY_ENTITY_ALIAS, orderByComparator); sql = query.toString(); } else { sql = _SQL_SELECT_STUDENT; } Session session = null; try { session = openSession(); Query q = session.createQuery(sql); if (orderByComparator == null) { list = (List<student>) QueryUtil.list(q, getDialect(), start, end, false); Collections.sort(list); } else { list = (List<student>) QueryUtil.list(q, getDialect(), start, end); } } catch (Exception e) { throw processException(e); } finally { if (list == null) { FinderCacheUtil.removeResult(finderPath, finderArgs); } else { cacheResult(list); FinderCacheUtil.putResult(finderPath, finderArgs, list); } closeSession(session); } } return list; } /** * Removes all the students from the database. * * @throws SystemException if a system exception occurred */ public void removeAll() throws SystemException { for (student student : findAll()) { remove(student); } } /** * Returns the number of students. * * @return the number of students * @throws SystemException if a system exception occurred */ public int countAll() throws SystemException { Long count = (Long) FinderCacheUtil.getResult(FINDER_PATH_COUNT_ALL, FINDER_ARGS_EMPTY, this); if (count == null) { Session session = null; try { session = openSession(); Query q = session.createQuery(_SQL_COUNT_STUDENT); count = (Long) q.uniqueResult(); } catch (Exception e) { throw processException(e); } finally { if (count == null) { count = Long.valueOf(0); } FinderCacheUtil.putResult(FINDER_PATH_COUNT_ALL, FINDER_ARGS_EMPTY, count); closeSession(session); } } return count.intValue(); } /** * Initializes the student persistence. */ public void afterPropertiesSet() { String[] listenerClassNames = StringUtil.split(GetterUtil.getString(com.liferay.util.service.ServiceProps .get("value.object.listener.com.asu.poly.iProjects.student.model.student"))); if (listenerClassNames.length > 0) { try { List<ModelListener<student>> listenersList = new ArrayList<ModelListener<student>>(); for (String listenerClassName : listenerClassNames) { listenersList.add((ModelListener<student>) InstanceFactory.newInstance(listenerClassName)); } listeners = listenersList.toArray(new ModelListener[listenersList.size()]); } catch (Exception e) { _log.error(e); } } } public void destroy() { EntityCacheUtil.removeCache(studentImpl.class.getName()); FinderCacheUtil.removeCache(FINDER_CLASS_NAME_ENTITY); FinderCacheUtil.removeCache(FINDER_CLASS_NAME_LIST_WITHOUT_PAGINATION); } @BeanReference(type = availabilityPersistence.class) protected availabilityPersistence availabilityPersistence; @BeanReference(type = preferencesPersistence.class) protected preferencesPersistence preferencesPersistence; @BeanReference(type = studentPersistence.class) protected studentPersistence studentPersistence; @BeanReference(type = ResourcePersistence.class) protected ResourcePersistence resourcePersistence; @BeanReference(type = UserPersistence.class) protected UserPersistence userPersistence; private static final String _SQL_SELECT_STUDENT = "SELECT student FROM student student"; private static final String _SQL_COUNT_STUDENT = "SELECT COUNT(student) FROM student student"; private static final String _ORDER_BY_ENTITY_ALIAS = "student."; private static final String _NO_SUCH_ENTITY_WITH_PRIMARY_KEY = "No student exists with the primary key "; private static final boolean _HIBERNATE_CACHE_USE_SECOND_LEVEL_CACHE = GetterUtil .getBoolean(PropsUtil.get(PropsKeys.HIBERNATE_CACHE_USE_SECOND_LEVEL_CACHE)); private static Log _log = LogFactoryUtil.getLog(studentPersistenceImpl.class); private static student _nullstudent = new studentImpl() { @Override public Object clone() { return this; } @Override public CacheModel<student> toCacheModel() { return _nullstudentCacheModel; } }; private static CacheModel<student> _nullstudentCacheModel = new CacheModel<student>() { public student toEntityModel() { return _nullstudent; } }; }