GZ/nwyj/.svn/pristine/da/dafe06eb007477b5f8badc64623db435085beee8.svn-base

package com.persistence.DBdll.adapter.assitant.DbIsModify;

import com.persistence.DBdll.adapter.assitant.ColumnInfo;
import com.sysmodel.datamodel.xmlmodel.able.Property;
import com.sysmodel.datamodel.xmlmodel.impl.MdpAttributeImpl;

public abstract class ColumnAdp{

	/**
	 * 判断数据库中常量表中字段是否修改
	 * 
	 * @param imp
	 * @param columninfo
	 * @return
	 */
	public boolean isConstantDataBaseModify(Property imp, ColumnInfo columninfo) {

		String datatype = imp.getDataType();
		String Scale = imp.getScale();
		int leghth = imp.getLength();

		return this.isModifyByDatatypeAndColumnInfo(datatype, Scale, leghth, columninfo);
	}

	/**
	 * 判断数据库中业务表中数据是否被修改过
	 * 
	 * @param attribute
	 * @param columninfo
	 * @return
	 */
	public boolean isDataBaseModify(MdpAttributeImpl attribute, ColumnInfo columninfo) {

		String datatype = attribute.getDataType();
		String Scale = attribute.getScale();
		int leghth = attribute.getPrecision();
		return this.isModifyByDatatypeAndColumnInfo(datatype, Scale, leghth, columninfo);

	}

	/**
	 * 判断表中列在xml中的配置是否和数据库中情况一致 Checks if is modify by datatype and column info.
	 * 
	 * @param datatype
	 *            xml中数据类型
	 * @param Scale
	 *            the xml中格式化类型
	 * @param leghth
	 *            the xml中字段长度定义
	 * 
	 * @param columninfo
	 *            the columninfo 数据库中列情况对象
	 * 
	 * @return true, if is modify by datatype and column info
	 * 
	 * @author sun
	 * @version 2009-8-20-12:37:20
	 * 
	 *          Checks if is modify by datatype and column info.
	 */
	abstract public boolean isModifyByDatatypeAndColumnInfo(String datatype, String xmlScale,
			int xmlPrecision, ColumnInfo columninfo);

}