Java tutorial
/** * Copyright (c) 2000-2011 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.liferay.shopping.service.persistence; import com.liferay.portal.kernel.dao.orm.QueryPos; import com.liferay.portal.kernel.dao.orm.QueryUtil; import com.liferay.portal.kernel.dao.orm.SQLQuery; import com.liferay.portal.kernel.dao.orm.Session; import com.liferay.portal.kernel.dao.orm.Type; 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.StringBundler; import com.liferay.portal.kernel.util.StringPool; import com.liferay.portal.kernel.util.StringUtil; import com.liferay.portal.security.permission.InlineSQLHelperUtil; import com.liferay.portal.service.persistence.impl.BasePersistenceImpl; import com.liferay.shopping.model.ShoppingItem; import com.liferay.shopping.model.impl.ShoppingItemImpl; import com.liferay.util.dao.orm.CustomSQLUtil; import java.util.Iterator; import java.util.List; /** * @author Brian Wing Shun Chan */ public class ShoppingItemFinderImpl extends BasePersistenceImpl<ShoppingItem> implements ShoppingItemFinder { public static String COUNT_BY_G_C = ShoppingItemFinder.class.getName() + ".countByG_C"; public int countByG_C(long groupId, List<Long> categoryIds) throws SystemException { return doCountByG_C(groupId, categoryIds, false); } public int countByFeatured(long groupId, long[] categoryIds) throws SystemException { Session session = null; try { session = openSession(); StringBundler query = new StringBundler(); query.append("SELECT COUNT(*) AS COUNT_VALUE FROM Shopping_ShoppingItem "); query.append("WHERE "); query.append("Shopping_ShoppingItem.groupId = ? AND ("); if ((categoryIds != null) && (categoryIds.length > 0)) { query.append("("); for (int i = 0; i < categoryIds.length; i++) { query.append("Shopping_ShoppingItem.categoryId = ? "); if (i + 1 < categoryIds.length) { query.append("OR "); } } query.append(") AND "); } query.append("Shopping_ShoppingItem.featured = ? AND "); query.append("Shopping_ShoppingItem.smallImage = ?"); SQLQuery q = session.createSQLQuery(query.toString()); q.addScalar(COUNT_COLUMN_NAME, Type.LONG); QueryPos qPos = QueryPos.getInstance(q); qPos.add(groupId); for (long categoryId : categoryIds) { qPos.add(categoryId); } qPos.add(true); qPos.add(true); Iterator<Long> itr = q.list().iterator(); if (itr.hasNext()) { Long count = itr.next(); if (count != null) { return count.intValue(); } } return 0; } catch (Exception e) { throw new SystemException(e); } finally { closeSession(session); } } public int countByKeywords(long groupId, long[] categoryIds, String keywords) throws SystemException { Session session = null; try { session = openSession(); StringBundler query = new StringBundler(); query.append("SELECT COUNT(*) AS COUNT_VALUE FROM Shopping_ShoppingItem "); query.append("WHERE "); query.append("Shopping_ShoppingItem.groupId = ? AND ("); if ((categoryIds != null) && (categoryIds.length > 0)) { query.append("("); for (int i = 0; i < categoryIds.length; i++) { query.append("Shopping_ShoppingItem.categoryId = ? "); if (i + 1 < categoryIds.length) { query.append("OR "); } } query.append(") AND "); } query.append("(Shopping_ShoppingItem.name LIKE ? OR "); query.append("Shopping_ShoppingItem.description LIKE ? OR "); query.append("Shopping_ShoppingItem.properties LIKE ?))"); keywords = '%' + keywords + '%'; SQLQuery q = session.createSQLQuery(query.toString()); q.addScalar(COUNT_COLUMN_NAME, Type.LONG); QueryPos qPos = QueryPos.getInstance(q); qPos.add(groupId); for (long categoryId : categoryIds) { qPos.add(categoryId); } qPos.add(keywords); qPos.add(keywords); qPos.add(keywords); Iterator<Long> itr = q.list().iterator(); if (itr.hasNext()) { Long count = itr.next(); if (count != null) { return count.intValue(); } } return 0; } catch (Exception e) { throw new SystemException(e); } finally { closeSession(session); } } public int countBySale(long groupId, long[] categoryIds) throws SystemException { Session session = null; try { session = openSession(); StringBundler query = new StringBundler(); query.append("SELECT COUNT(*) AS COUNT_VALUE FROM Shopping_ShoppingItem "); query.append("WHERE "); query.append("Shopping_ShoppingItem.groupId = ? AND ("); if ((categoryIds != null) && (categoryIds.length > 0)) { query.append("("); for (int i = 0; i < categoryIds.length; i++) { query.append("Shopping_ShoppingItem.categoryId = ? "); if (i + 1 < categoryIds.length) { query.append("OR "); } } query.append(") AND "); } query.append("Shopping_ShoppingItem.sale = ? AND "); query.append("Shopping_ShoppingItem.smallImage = ?"); SQLQuery q = session.createSQLQuery(query.toString()); q.addScalar(COUNT_COLUMN_NAME, Type.LONG); QueryPos qPos = QueryPos.getInstance(q); qPos.add(groupId); for (long categoryId : categoryIds) { qPos.add(categoryId); } qPos.add(true); qPos.add(true); Iterator<Long> itr = q.list().iterator(); if (itr.hasNext()) { Long count = itr.next(); if (count != null) { return count.intValue(); } } return 0; } catch (Exception e) { throw new SystemException(e); } finally { closeSession(session); } } public int filterCountByG_C(long groupId, List<Long> categoryIds) throws SystemException { return doCountByG_C(groupId, categoryIds, true); } public List<ShoppingItem> findByFeatured(long groupId, long[] categoryIds, int numOfItems) throws SystemException { int countByFeatured = countByFeatured(groupId, categoryIds); Session session = null; try { session = openSession(); StringBundler query = new StringBundler(); query.append("SELECT {Shopping_ShoppingItem.*} FROM Shopping_ShoppingItem "); query.append("WHERE "); query.append("Shopping_ShoppingItem.groupId = ? AND ("); if ((categoryIds != null) && (categoryIds.length > 0)) { query.append("("); for (int i = 0; i < categoryIds.length; i++) { query.append("Shopping_ShoppingItem.categoryId = ? "); if (i + 1 < categoryIds.length) { query.append("OR "); } } query.append(") AND "); } query.append("Shopping_ShoppingItem.featured = ? AND "); query.append("Shopping_ShoppingItem.smallImage = ?"); SQLQuery q = session.createSQLQuery(query.toString()); q.addEntity("Shopping_ShoppingItem", ShoppingItemImpl.class); QueryPos qPos = QueryPos.getInstance(q); qPos.add(groupId); for (long categoryId : categoryIds) { qPos.add(categoryId); } qPos.add(true); qPos.add(true); return (List<ShoppingItem>) QueryUtil.randomList(q, getDialect(), countByFeatured, numOfItems); } catch (Exception e) { throw new SystemException(e); } finally { closeSession(session); } } public List<ShoppingItem> findByKeywords(long groupId, long[] categoryIds, String keywords, int start, int end) throws SystemException { Session session = null; try { session = openSession(); StringBundler query = new StringBundler(); query.append("SELECT {Shopping_ShoppingItem.*} FROM Shopping_ShoppingItem "); query.append("WHERE "); query.append("Shopping_ShoppingItem.groupId = ? AND ("); if ((categoryIds != null) && (categoryIds.length > 0)) { query.append("("); for (int i = 0; i < categoryIds.length; i++) { query.append("Shopping_ShoppingItem.categoryId = ? "); if (i + 1 < categoryIds.length) { query.append("OR "); } } query.append(") AND "); } query.append("(Shopping_ShoppingItem.name LIKE ? OR "); query.append("Shopping_ShoppingItem.description LIKE ? OR "); query.append("Shopping_ShoppingItem.properties LIKE ?))"); keywords = '%' + keywords + '%'; SQLQuery q = session.createSQLQuery(query.toString()); q.addEntity("Shopping_ShoppingItem", ShoppingItemImpl.class); QueryPos qPos = QueryPos.getInstance(q); qPos.add(groupId); for (long categoryId : categoryIds) { qPos.add(categoryId); } qPos.add(keywords); qPos.add(keywords); qPos.add(keywords); return (List<ShoppingItem>) QueryUtil.list(q, getDialect(), start, end); } catch (Exception e) { throw new SystemException(e); } finally { closeSession(session); } } public List<ShoppingItem> findBySale(long groupId, long[] categoryIds, int numOfItems) throws SystemException { int countBySale = countBySale(groupId, categoryIds); Session session = null; try { session = openSession(); StringBundler query = new StringBundler(); query.append("SELECT {Shopping_ShoppingItem.*} FROM Shopping_ShoppingItem "); query.append("WHERE "); query.append("Shopping_ShoppingItem.groupId = ? AND ("); if ((categoryIds != null) && (categoryIds.length > 0)) { query.append("("); for (int i = 0; i < categoryIds.length; i++) { query.append("Shopping_ShoppingItem.categoryId = ? "); if (i + 1 < categoryIds.length) { query.append("OR "); } } query.append(") AND "); } query.append("Shopping_ShoppingItem.sale = ? AND "); query.append("Shopping_ShoppingItem.smallImage = ?"); SQLQuery q = session.createSQLQuery(query.toString()); q.addEntity("Shopping_ShoppingItem", ShoppingItemImpl.class); QueryPos qPos = QueryPos.getInstance(q); qPos.add(groupId); for (long categoryId : categoryIds) { qPos.add(categoryId); } qPos.add(true); qPos.add(true); return (List<ShoppingItem>) QueryUtil.randomList(q, getDialect(), countBySale, numOfItems); } catch (Exception e) { throw new SystemException(e); } finally { closeSession(session); } } protected int doCountByG_C(long groupId, List<Long> categoryIds, boolean inlineSQLHelper) throws SystemException { Session session = null; try { session = openSession(); String sql = CustomSQLUtil.get(COUNT_BY_G_C); if (inlineSQLHelper) { sql = InlineSQLHelperUtil.replacePermissionCheck(sql, ShoppingItem.class.getName(), "ShoppingItem.itemId", groupId); } sql = StringUtil.replace(sql, "[$CATEGORY_ID$]", getCategoryIds(categoryIds)); SQLQuery q = session.createSQLQuery(sql); q.addScalar(COUNT_COLUMN_NAME, Type.LONG); QueryPos qPos = QueryPos.getInstance(q); qPos.add(groupId); for (int i = 0; i < categoryIds.size(); i++) { Long categoryId = categoryIds.get(i); qPos.add(categoryId); } Iterator<Long> itr = q.list().iterator(); if (itr.hasNext()) { Long count = itr.next(); if (count != null) { return count.intValue(); } } return 0; } catch (Exception e) { _log.error(e); throw new SystemException(e); } finally { closeSession(session); } } protected String getCategoryIds(List<Long> categoryIds) { if (categoryIds.isEmpty()) { return StringPool.BLANK; } StringBundler sb = new StringBundler(categoryIds.size() * 2 - 1); for (int i = 0; i < categoryIds.size(); i++) { sb.append("categoryId = ? "); if ((i + 1) != categoryIds.size()) { sb.append("OR "); } } return sb.toString(); } private static Log _log = LogFactoryUtil.getLog(ShoppingItemFinderImpl.class); }