/**
* Alipay.com Inc.
* Copyright (c) 2004-2012 All Rights Reserved.
*/
package com.alipay.zdal.parser.sql.dialect.oracle.ast.stmt;
import java.util.ArrayList;
import java.util.List;
import com.alipay.zdal.parser.sql.ast.SQLExpr;
import com.alipay.zdal.parser.sql.ast.statement.SQLJoinTableSource;
import com.alipay.zdal.parser.sql.dialect.oracle.ast.clause.FlashbackQueryClause;
import com.alipay.zdal.parser.sql.dialect.oracle.visitor.OracleASTVisitor;
import com.alipay.zdal.parser.sql.visitor.SQLASTVisitor;
/**
*
* @author ����
* @version $Id: OracleSelectJoin.java, v 0.1 2012-11-17 ����3:49:40 Exp $
*/
public class OracleSelectJoin extends SQLJoinTableSource implements OracleSelectTableSource {
private static final long serialVersionUID = 1L;
private final List<SQLExpr> using = new ArrayList<SQLExpr>();
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 List<SQLExpr> getUsing() {
return this.using;
}
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(")");
}
}
}