/**
* Alipay.com Inc.
* Copyright (c) 2004-2012 All Rights Reserved.
*/
package com.alipay.zdal.parser.sql.ast.expr;
import java.io.Serializable;
import com.alipay.zdal.parser.sql.ast.SQLExpr;
import com.alipay.zdal.parser.sql.ast.SQLExprImpl;
import com.alipay.zdal.parser.sql.visitor.SQLASTVisitor;
/**
*
* @author xiaoqing.zhouxq
* @version $Id: SQLBinaryOpExpr.java, v 0.1 2012-11-17 ����3:15:55 xiaoqing.zhouxq Exp $
*/
public class SQLBinaryOpExpr extends SQLExprImpl implements Serializable {
private static final long serialVersionUID = 1L;
public SQLExpr left;
public SQLExpr right;
public SQLBinaryOperator operator;
public SQLBinaryOpExpr() {
}
public SQLBinaryOpExpr(SQLExpr left, SQLBinaryOperator operator, SQLExpr right) {
this.left = left;
this.right = right;
this.operator = operator;
}
public SQLBinaryOpExpr(SQLExpr left, SQLExpr right, SQLBinaryOperator operator) {
this.left = left;
this.right = right;
this.operator = operator;
}
public SQLExpr getLeft() {
return this.left;
}
public void setLeft(SQLExpr left) {
this.left = left;
}
public SQLExpr getRight() {
return this.right;
}
public void setRight(SQLExpr right) {
this.right = right;
}
public SQLBinaryOperator getOperator() {
return this.operator;
}
public void setOperator(SQLBinaryOperator operator) {
this.operator = operator;
}
public void output(StringBuffer buf) {
this.left.output(buf);
buf.append(" ");
buf.append(this.operator.name);
buf.append(" ");
this.right.output(buf);
}
protected void accept0(SQLASTVisitor visitor) {
if (visitor.visit(this)) {
acceptChild(visitor, this.left);
acceptChild(visitor, this.right);
}
visitor.endVisit(this);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((left == null) ? 0 : left.hashCode());
result = prime * result + ((operator == null) ? 0 : operator.hashCode());
result = prime * result + ((right == null) ? 0 : right.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (!(obj instanceof SQLBinaryOpExpr)) {
return false;
}
SQLBinaryOpExpr other = (SQLBinaryOpExpr) obj;
if (left == null) {
if (other.left != null) {
return false;
}
} else if (!left.equals(other.left)) {
return false;
}
if (operator != other.operator) {
return false;
}
if (right == null) {
if (other.right != null) {
return false;
}
} else if (!right.equals(other.right)) {
return false;
}
return true;
}
}