/*
* 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.alibaba.druid.sql.dialect.oracle.ast.stmt;
import com.alibaba.druid.sql.SQLUtils;
import com.alibaba.druid.sql.ast.SQLExpr;
import com.alibaba.druid.sql.ast.statement.SQLJoinTableSource;
import com.alibaba.druid.sql.dialect.oracle.ast.clause.FlashbackQueryClause;
import com.alibaba.druid.sql.dialect.oracle.visitor.OracleASTVisitor;
import com.alibaba.druid.sql.visitor.SQLASTVisitor;
public class OracleSelectJoin extends SQLJoinTableSource implements OracleSelectTableSource {
protected OracleSelectPivotBase pivot;
protected FlashbackQueryClause flashback;
public OracleSelectJoin(String alias){
super(alias);
}
public OracleSelectJoin(){
}
public FlashbackQueryClause getFlashback() {
return flashback;
}
public void setFlashback(FlashbackQueryClause flashback) {
this.flashback = flashback;
}
public OracleSelectPivotBase getPivot() {
return pivot;
}
public void setPivot(OracleSelectPivotBase pivot) {
this.pivot = pivot;
}
@Override
protected void accept0(SQLASTVisitor visitor) {
this.accept0((OracleASTVisitor) visitor);
}
protected void accept0(OracleASTVisitor visitor) {
if (visitor.visit(this)) {
acceptChild(visitor, this.left);
acceptChild(visitor, this.right);
acceptChild(visitor, this.condition);
acceptChild(visitor, this.using);
acceptChild(visitor, this.flashback);
}
visitor.endVisit(this);
}
public void output(StringBuffer buf) {
this.left.output(buf);
buf.append(JoinType.toString(this.joinType));
this.right.output(buf);
if (this.condition != null) {
buf.append(" ON ");
this.condition.output(buf);
}
if (this.using.size() > 0) {
buf.append(" USING (");
int i = 0;
for (int size = this.using.size(); i < size; ++i) {
if (i != 0) {
buf.append(", ");
}
((SQLExpr) this.using.get(i)).output(buf);
}
buf.append(")");
}
}
public String toString () {
return SQLUtils.toOracleString(this);
}
}