/*
* Copyright (c) 2008, SQL Power Group Inc.
*
* This file is part of SQL Power Library.
*
* SQL Power Library is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* SQL Power 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package ca.sqlpower.query;
/**
* An enumeration of group (aggregate) functions we think SQL
* databases will support.
*/
public enum SQLGroupFunction {
GROUP_BY ("(Group By)"),
SUM ("SUM"),
MIN ("MIN"),
MAX ("MAX"),
AVG ("AVG"),
COUNT ("COUNT");
private final String groupingName;
private SQLGroupFunction(String groupingName) {
this.groupingName = groupingName;
}
public String getGroupingName() {
return groupingName;
}
/**
* This method will get a SQLGroupFunction object based on the grouping name.
*/
public static SQLGroupFunction getGroupType(String groupingName) {
for (SQLGroupFunction function : SQLGroupFunction.values()) {
if (function.getGroupingName().equals(groupingName)) {
return function;
}
}
throw new IllegalArgumentException("Unknown name to group by " + groupingName);
}
}