org.tinygroup.tinysqldsl.select.UnionOperation Maven / Gradle / Ivy
/**
* Copyright (c) 1997-2013, www.tinygroup.org ([email protected]).
*
* Licensed under the GPL, Version 3.0 (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.gnu.org/licenses/gpl.html
*
* 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.tinygroup.tinysqldsl.select;
import org.tinygroup.tinysqldsl.select.SetOperationList.SetOperationType;
/**
* UNION并集运算操作
*/
public class UnionOperation extends SetOperation {
private boolean distinct;
private boolean all;
public UnionOperation() {
super(SetOperationType.UNION);
}
public UnionOperation(boolean all) {
super(SetOperationType.UNION);
this.all = all;
}
public boolean isAll() {
return all;
}
public void setAll(boolean all) {
this.all = all;
}
public boolean isDistinct() {
return distinct;
}
public void setDistinct(boolean distinct) {
this.distinct = distinct;
}
public String toString() {
String allDistinct = "";
if (isAll()) {
allDistinct = " ALL";
} else if (isDistinct()) {
allDistinct = " DISTINCT";
}
return super.toString() + allDistinct;
}
}