/*
* Electronic Logistics Management Information System (eLMIS) is a supply chain management system for health commodities in a developing country setting.
*
* Copyright (C) 2015 John Snow, Inc (JSI). This program was produced for the U.S. Agency for International Development (USAID). It was prepared under the USAID | DELIVER PROJECT, Task Order 4.
*
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.openlmis.report.builder;
import javax.persistence.Column;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
public class QueryHelpers {
public static String getSortOrder(Map params, String defaultColumn){
String sortOrder = "";
for (Object entryObject : params.keySet())
{
String entry = entryObject.toString();
if(entry.startsWith("sort-") && (entry.endsWith("asc") || entry.endsWith("desc"))){
if(sortOrder.isEmpty()){
sortOrder = entry.substring(5) + " " + ((String[])params.get(entry))[0];
}else{
sortOrder += ", " + entry.substring(5) + " " + ((String[])params.get(entry))[0];
}
}
}
return sortOrder.isEmpty()? defaultColumn : sortOrder;
}
public static String getSortOrder(Map filterCriteria, Class reportModel, String defaultSortOrder){
Map columnMapping = new HashMap(reportModel.getFields().length);
for(Field field : reportModel.getDeclaredFields()){
if(field.getAnnotation(Column.class) != null){
Column column = field.getAnnotation(Column.class);
columnMapping.put(field.getName(),column.name());
}else {
//assumes report model column name matches database column name
columnMapping.put(field.getName(),field.getName());
}
}
StringBuilder sortOrder = new StringBuilder("");
if(filterCriteria != null){
for(Object entryObject : filterCriteria.keySet()){
String entry = entryObject.toString();
if(entry.startsWith("sort-") && columnMapping.get(entry.substring(5)) != null)
sortOrder = sortOrder.toString().equals("") ?
sortOrder.append(columnMapping.get(entry.substring(5)).toString()).append(" ").append(((String[])filterCriteria.get(entry))[0]) :
sortOrder.append(",").append(columnMapping.get(entry.substring(5)).toString()).append(" ").append(((String[])filterCriteria.get(entry))[0]) ;
}
}
return sortOrder.toString().equals("") ? defaultSortOrder : sortOrder.toString();
}
}