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SPL(Structured Process Language) A programming language specially for structured data computing.

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package com.scudata.dm;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;

/**
 * ?ļ??ӿ?
 * @author WangXiaoJun
 *
 */
public interface IFile {
	/**
	 * ?????ļ???
	 * @param fileName
	 */
	void setFileName(String fileName);

	/**
	 * ȡ??????
	 * @throws IOException
	 * @return InputStream
	 */
	InputStream getInputStream();

	/**
	 * ȡ????????ļ????????򴴽?
	 * @param isAppend boolean ?Ƿ?׷??
	 * @return OutputStream
	 */
	OutputStream getOutputStream(boolean isAppend);

	/**
	 * ȡ?ܹ????д??????????ļ????????򴴽?
	 * @param isAppend boolean ?Ƿ?׷??
	 * @return RandomOutputStream
	 */
	RandomOutputStream getRandomOutputStream(boolean isAppend);

	/**
	 * ?????ļ??Ƿ????
	 * @return boolean
	 */
	boolean exists();

	/**
	 * ?????ļ???С
	 * @return long
	 */
	long size();

	/**
	 * ????????޸?ʱ??
	 * @return long
	 */
	long lastModified();

	/**
	 * ɾ???ļ????????Ƿ?ɹ?
	 * @return boolean
	 */
	boolean delete();
	
	/**
	 * ɾ???ļ??м??????ļ?
	 * @return
	 */
	boolean deleteDir();

	/**
	 * ?ƶ??ļ???path??pathֻ???ļ????????
	 * @param path String ?ļ??????ļ?·????
	 * @param opt String @y	Ŀ???ļ??Ѵ???ʱǿ?и??ƣ?ȱʡ??ʧ?ܣ???@c	????
	 * @return boolean
	 */
	boolean move(String path, String opt);

	/**
	 * ??????ʱ?ļ?
	 * @param prefix String
	 * @return String ???ؾ???·???ļ???
	 */
	String createTempFile(String prefix);
	
	/**
	 * ȡ????????ļ??????????֧???򷵻?null
	 * @return RandomAccessFile
	 */
	RandomAccessFile getRandomAccessFile();
	
	/**
	 * ?????Ƿ??????ļ?
	 * @return true???????ļ???false?????????ļ?
	 */
	public boolean isCloudFile();
}