/**
 * Alipay.com Inc.
 * Copyright (c) 2004-2012 All Rights Reserved.
 */
package com.alipay.zdal.parser.sql.dialect.mysql.ast.expr;

import com.alipay.zdal.parser.sql.ast.expr.SQLCharExpr;
import com.alipay.zdal.parser.sql.dialect.mysql.visitor.MySqlASTVisitor;
import com.alipay.zdal.parser.sql.visitor.SQLASTVisitor;

/**
 * 
 * @author ����
 * @version $Id: MySqlCharExpr.java, v 0.1 2012-11-17 ����3:30:09 Exp $
 */
public class MySqlCharExpr extends SQLCharExpr implements MySqlExpr {

    private static final long serialVersionUID = 1L;

    private String            charset;
    private String            collate;

    public MySqlCharExpr() {

    }

    public MySqlCharExpr(String text) {
        super(text);
    }

    public String getCharset() {
        return charset;
    }

    public void setCharset(String charset) {
        this.charset = charset;
    }

    public String getCollate() {
        return collate;
    }

    public void setCollate(String collate) {
        this.collate = collate;
    }

    public void output(StringBuffer buf) {
        if (charset != null) {
            buf.append(charset);
            buf.append(' ');
        }

        super.output(buf);

        if (collate != null) {
            buf.append(" COLLATE ");
            buf.append(collate);
        }
    }

    @Override
    protected void accept0(SQLASTVisitor visitor) {
        if (visitor instanceof MySqlASTVisitor) {
            accept0((MySqlASTVisitor) visitor);
        } else {
            visitor.visit(this);
            visitor.endVisit(this);
        }
    }

    public void accept0(MySqlASTVisitor visitor) {
        visitor.visit(this);
        visitor.endVisit(this);
    }
}