/**
* Alipay.com Inc.
* Copyright (c) 2004-2012 All Rights Reserved.
*/
package com.alipay.zdal.parser.sql.ast.expr;
import com.alipay.zdal.parser.sql.ast.SQLDataType;
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: SQLCastExpr.java, v 0.1 2012-11-17 ����3:16:21 xiaoqing.zhouxq Exp $
*/
public class SQLCastExpr extends SQLExprImpl {
private static final long serialVersionUID = 1L;
private SQLExpr expr;
private SQLDataType dataType;
public SQLCastExpr() {
}
public SQLExpr getExpr() {
return this.expr;
}
public void setExpr(SQLExpr expr) {
this.expr = expr;
}
public SQLDataType getDataType() {
return this.dataType;
}
public void setDataType(SQLDataType dataType) {
this.dataType = dataType;
}
public void output(StringBuffer buf) {
buf.append("CAST(");
this.expr.output(buf);
buf.append(" AS ");
this.dataType.output(buf);
buf.append(")");
}
protected void accept0(SQLASTVisitor visitor) {
if (visitor.visit(this)) {
acceptChild(visitor, this.expr);
acceptChild(visitor, this.dataType);
}
visitor.endVisit(this);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((dataType == null) ? 0 : dataType.hashCode());
result = prime * result + ((expr == null) ? 0 : expr.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
SQLCastExpr other = (SQLCastExpr) obj;
if (dataType == null) {
if (other.dataType != null) {
return false;
}
} else if (!dataType.equals(other.dataType)) {
return false;
}
if (expr == null) {
if (other.expr != null) {
return false;
}
} else if (!expr.equals(other.expr)) {
return false;
}
return true;
}
}