File	Doc	Category	Size	Date	Package
DownloadInfo.java	API Doc	Glassfish v2 API	4108	Fri May 04 22:23:42 BST 2007	com.sun.enterprise.management.support

DownloadInfo

• java.lang.Object
  • UpDownInfo

Fields Summary
private FileInputStream	mInputStream
private long	mReadSoFar
private final long	mTotalSize
private final boolean	mDeleteWhenDone

Constructors Summary
public DownloadInfo(Object id, File theFile, boolean deleteWhenDone) super( id, theFile ); mTotalSize = theFile.length(); if ( theFile.length() == 0 ) { throw new IllegalArgumentException( theFile.toString() ); } mReadSoFar = 0; mDeleteWhenDone = deleteWhenDone; if ( mDeleteWhenDone ) { theFile.deleteOnExit(); } mInputStream = new FileInputStream( theFile ); assert( ! isDone() );

Methods Summary
public synchronized void	cleanup() if ( mInputStream != null ) { mInputStream.close(); mInputStream = null; } if ( mDeleteWhenDone ) { getFile().delete(); }
public final long	getLength() return( mTotalSize );
private final long	getRemaining() return( mTotalSize - mReadSoFar );
public boolean	isDone() return( mReadSoFar == mTotalSize );
public synchronized byte[]	read(int requestSize) return true if done, false otherwise if ( isDone() ) { throw new IllegalArgumentException( "operation has been completed" ); } final long remaining = getRemaining(); byte[] bytes = null; if ( remaining != 0 ) { final long actual = remaining < requestSize ? remaining : requestSize; bytes = new byte[ (int)actual ]; final int numRead = mInputStream.read( bytes ); if ( numRead != bytes.length ) { throw new IOException(); } mReadSoFar += numRead; if ( isDone() ) { cleanup(); } accessed(); } return( bytes );