com.shulie.druid.sql.dialect.sqlserver.ast.SQLServerSelectQueryBlock Maven / Gradle / Ivy
/*
* Copyright 1999-2017 Alibaba Group Holding Ltd.
*
* Licensed 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 com.shulie.druid.sql.dialect.sqlserver.ast;
import com.shulie.druid.DbType;
import com.shulie.druid.sql.ast.expr.SQLIntegerExpr;
import com.shulie.druid.sql.ast.statement.SQLSelectQueryBlock;
import com.shulie.druid.sql.dialect.sqlserver.visitor.SQLServerASTVisitor;
import com.shulie.druid.sql.visitor.SQLASTVisitor;
public class SQLServerSelectQueryBlock extends SQLSelectQueryBlock {
private SQLServerTop top;
public SQLServerSelectQueryBlock() {
dbType = DbType.sqlserver;
}
public SQLServerTop getTop() {
return top;
}
public void setTop(SQLServerTop top) {
if (top != null) {
top.setParent(this);
}
this.top = top;
}
public void setTop(int rowCount) {
setTop(new SQLServerTop(new SQLIntegerExpr(rowCount)));
}
@Override
protected void accept0(SQLASTVisitor visitor) {
if (visitor instanceof SQLServerASTVisitor) {
accept0((SQLServerASTVisitor) visitor);
} else {
super.accept0(visitor);
}
}
protected void accept0(SQLServerASTVisitor visitor) {
if (visitor.visit(this)) {
acceptChild(visitor, this.top);
acceptChild(visitor, this.selectList);
acceptChild(visitor, this.from);
acceptChild(visitor, this.where);
acceptChild(visitor, this.groupBy);
}
visitor.endVisit(this);
}
public void limit(int rowCount, int offset) {
if (offset <= 0) {
setTop(rowCount);
} else {
throw new UnsupportedOperationException("not support offset");
}
}
}