header.java

（文件数据库系统）功能强大,很有价值的代码.

class Header
{
	String name;
	String key;
	String keyType;
	String []attri;
	int count=0;
	boolean delete=false;
	Header(){}
	 Header(Header h1,Header h2)
	{
		setName(new String(h1.getName().trim()+h2.getName().trim()));
		String[] str=new String[44];String name1=h1.getName().trim();String name2=h2.getName().trim();
		str[0]=name1+"."+h1.getKey();
		str[1]=name2+"."+h1.getType();
				int i=0;int j=0;

		for(i=0;i<h1.getCount()-1;i++)
		str[i+2]=name1+"."+h1.getAttri()[i];
				str[2]=name2+"."+h2.getKey();
		str[3]=name2+"."+h2.getType();

		for(j=0;j<h2.getCount()-1;j++)
		str[i+j+4]=name2+"."+h2.getAttri()[j];
		attri=str;
		setCount(i+j+4+1);
	}
	String getKey()
	{
		return key;
	}
	String getType()
	{
		return keyType;
	}
	void setName(String na)
	{
		name=new String(na);
	}
	String  getName()
	{
		return name;
	}
	void setCount(int i)
	{
		count=i;
	}
	void delete()
	{
		delete=true;
	}
	
	void setKey(String value)
	{
		key=value;
	}
	void setType(String type)
	{
		keyType=type;
	}
	
	void setAttri(String at[])
	{
		attri=new String[2*(count-1)];
		for(int i=0;i<attri.length;i++)
		attri[i]=at[i];
	}
	String [] getAttri()
	{
		return attri;
	}
	int getCount()
	{
		return count;
		}	
}