/**
 * 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.SQLExpr;
import com.alipay.zdal.parser.sql.ast.SQLExprImpl;
import com.alipay.zdal.parser.sql.ast.SQLName;
import com.alipay.zdal.parser.sql.visitor.SQLASTVisitor;

/**
 * 
 * @author xiaoqing.zhouxq
 * @version $Id: SQLPropertyExpr.java, v 0.1 2012-11-17 ����3:19:06 xiaoqing.zhouxq Exp $
 */
public class SQLPropertyExpr extends SQLExprImpl implements SQLName {

    private static final long serialVersionUID = 1L;

    private SQLExpr           owner;
    private String            name;

    public SQLPropertyExpr(SQLExpr owner, String name) {

        this.owner = owner;
        this.name = name;
    }

    public SQLPropertyExpr() {

    }

    public String getSimleName() {
        return name;
    }

    public SQLExpr getOwner() {
        return this.owner;
    }

    public void setOwner(SQLExpr owner) {
        this.owner = owner;
    }

    public String getName() {
        return this.name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void output(StringBuffer buf) {
        this.owner.output(buf);
        buf.append(".");
        buf.append(this.name);
    }

    protected void accept0(SQLASTVisitor visitor) {
        if (visitor.visit(this)) {
            acceptChild(visitor, this.owner);
        }

        visitor.endVisit(this);
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((name == null) ? 0 : name.hashCode());
        result = prime * result + ((owner == null) ? 0 : owner.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (!(obj instanceof SQLPropertyExpr)) {
            return false;
        }
        SQLPropertyExpr other = (SQLPropertyExpr) obj;
        if (name == null) {
            if (other.name != null) {
                return false;
            }
        } else if (!name.equals(other.name)) {
            return false;
        }
        if (owner == null) {
            if (other.owner != null) {
                return false;
            }
        } else if (!owner.equals(other.owner)) {
            return false;
        }
        return true;
    }

}