/* | |
* Licensed to the Apache Software Foundation (ASF) under one | |
* or more contributor license agreements. See the NOTICE file | |
* distributed with this work for additional information | |
* regarding copyright ownership. The ASF licenses this file | |
* to you 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 org.apache.openmeetings.utils; | |
import org.apache.commons.lang3.StringUtils; | |
public class DaoHelper { | |
public static String getSearchQuery(String table, String alias, String search, boolean filterDeleted, boolean count, String sort, String... fields) { | |
return getSearchQuery(table, alias, search, filterDeleted, count, null, sort, fields); | |
} | |
public static String getSearchQuery(String table, String alias, String search, boolean filterDeleted, boolean count, String additionalWhere, String sort, String... fields) { | |
StringBuilder sb = new StringBuilder("SELECT "); | |
if (count) { | |
sb.append("COUNT(").append(alias).append(")"); | |
} else { | |
sb.append(alias); | |
} | |
sb.append(" FROM ").append(table).append(" ").append(alias); | |
boolean whereAdded = false; | |
if (filterDeleted) { | |
whereAdded = true; | |
sb.append(" WHERE ").append(alias).append(".deleted = false "); | |
} | |
StringBuilder where = DaoHelper.getWhereClause(search, alias, fields); | |
if (where.length() > 0) { | |
if (!whereAdded) { | |
whereAdded = true; | |
sb.append(" WHERE "); | |
} else { | |
sb.append("AND "); | |
} | |
sb.append(where); | |
} | |
if (additionalWhere != null && !additionalWhere.trim().isEmpty()) { | |
if (!whereAdded) { | |
whereAdded = true; | |
sb.append(" WHERE "); | |
} else { | |
sb.append("AND "); | |
} | |
sb.append(additionalWhere); | |
} | |
if (sort != null && !sort.trim().isEmpty()) { | |
sb.append(" ORDER BY ").append(alias).append(".").append(sort); | |
} | |
return sb.toString(); | |
} | |
public static StringBuilder getWhereClause(String search, String alias, String... fields) { | |
StringBuilder sb = new StringBuilder(); | |
getWhereClause(sb, search, alias, fields); | |
return sb; | |
} | |
public static void getWhereClause(StringBuilder sb, String search, String alias, String... fields) { | |
if (search != null) { | |
boolean notEmpty = false; | |
String[] searchItems = search.split(" "); | |
for (int i = 0; i < searchItems.length; ++i) { | |
if (searchItems[i].isEmpty()) { | |
continue; | |
} | |
if (i == 0) { | |
notEmpty = true; | |
sb.append(" ("); | |
} else { | |
sb.append(" OR "); | |
} | |
StringBuilder placeholder = new StringBuilder(); | |
placeholder.append("%").append(StringUtils.lowerCase(searchItems[i])).append("%"); | |
sb.append("("); | |
for (int j = 0; j < fields.length; ++j) { | |
if (j != 0) { | |
sb.append(" OR "); | |
} | |
sb.append("lower(").append(alias).append(".").append(fields[j]).append(") LIKE '").append(placeholder).append("' "); | |
} | |
sb.append(")"); | |
} | |
if (notEmpty) { | |
sb.append(") "); | |
} | |
} | |
} | |
} |