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

import java.util.ArrayList;
import java.util.List;

import com.alipay.zdal.parser.sql.ast.SQLDataType;
import com.alipay.zdal.parser.sql.ast.SQLExpr;
import com.alipay.zdal.parser.sql.ast.SQLName;
import com.alipay.zdal.parser.sql.ast.SQLObjectImpl;
import com.alipay.zdal.parser.sql.visitor.SQLASTVisitor;

/**
 * 
 * @author xiaoqing.zhouxq
 * @version $Id: SQLColumnDefinition.java, v 0.1 2012-11-17 ����3:20:49 xiaoqing.zhouxq Exp $
 */
@SuppressWarnings("serial")
public class SQLColumnDefinition extends SQLObjectImpl implements SQLTableElement {

    private SQLName                         name;
    private SQLDataType                     dataType;
    private SQLExpr                         defaultExpr;
    private final List<SQLColumnConstraint> constaints = new ArrayList<SQLColumnConstraint>(0);
    private String                          comment;

    private Boolean                         enable;

    public SQLColumnDefinition() {

    }

    public Boolean getEnable() {
        return enable;
    }

    public void setEnable(Boolean enable) {
        this.enable = enable;
    }

    public SQLName getName() {
        return name;
    }

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

    public SQLDataType getDataType() {
        return dataType;
    }

    public void setDataType(SQLDataType dataType) {
        this.dataType = dataType;
    }

    public SQLExpr getDefaultExpr() {
        return defaultExpr;
    }

    public void setDefaultExpr(SQLExpr defaultExpr) {
        this.defaultExpr = defaultExpr;
    }

    public List<SQLColumnConstraint> getConstaints() {
        return constaints;
    }

    @Override
    public void output(StringBuffer buf) {
        name.output(buf);
        buf.append(' ');
        this.dataType.output(buf);
        if (defaultExpr != null) {
            buf.append(" DEFAULT ");
            this.defaultExpr.output(buf);
        }
    }

    @Override
    protected void accept0(SQLASTVisitor visitor) {
        if (visitor.visit(this)) {
            this.acceptChild(visitor, name);
            this.acceptChild(visitor, dataType);
            this.acceptChild(visitor, defaultExpr);
            this.acceptChild(visitor, constaints);
        }
        visitor.endVisit(this);
    }

    public String getComment() {
        return comment;
    }

    public void setComment(String comment) {
        this.comment = comment;
    }

}