ClosingFileReader (OpenJ9 JDK 11)

java.lang.Object
- javax.imageio.stream.ImageInputStreamImpl
- - javax.imageio.stream.FileImageInputStream
  - - com.ibm.j9ddr.corereaders.ClosingFileReader

All Implemented Interfaces:

Closeable, DataInput, AutoCloseable, ImageInputStream
```
public class ClosingFileReader
extends FileImageInputStream
```
A wrapper around the functionality that we require from RandomAccessFiles but with the added auto-closing functionality that we require. Since it is not always easy to determine who "owns" a file and we do not want to introduce the concept of state, this class will manage all such file ownership. We now also extend javax.imageio.stream.ImageInputStreamImpl as a convenient common interface that we can share with the zebedee corefile reader.

Field Summary
- Fields declared in class javax.imageio.stream.ImageInputStreamImpl
  bitOffset, byteOrder, flushedPos, streamPos

Constructor Summary

Constructors
Constructor	Description
`ClosingFileReader(File file)`
`ClosingFileReader(File file, ByteOrder endian)`	Create a closing file reader with the given endianness which can close/delete the backing file on shutdown

Method Summary
- Methods declared in class javax.imageio.stream.FileImageInputStream
  close, finalize, length, read, read, seek
- Methods declared in class javax.imageio.stream.ImageInputStreamImpl
  checkClosed, flush, flushBefore, getBitOffset, getByteOrder, getFlushedPosition, getStreamPosition, isCached, isCachedFile, isCachedMemory, mark, read, readBit, readBits, readBoolean, readByte, readBytes, readChar, readDouble, readFloat, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedInt, readUnsignedShort, readUTF, reset, setBitOffset, setByteOrder, skipBytes, skipBytes
- Methods declared in class java.lang.Object
  clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClosingFileReader

public ClosingFileReader(File file)
                  throws FileNotFoundException,
                         IOException

Throws:: FileNotFoundException; IOException

ClosingFileReader
```
public ClosingFileReader(File file,
                         ByteOrder endian)
                  throws FileNotFoundException,
                         IOException
```
Create a closing file reader with the given endianness which can close/delete the backing file on shutdown

Parameters:

file -

deleteOnCloseOrExit - Whether to delete the file when the file is closed or at shutdown

endian - ther

Throws:

FileNotFoundException

IOException