public class ByteBufferInputStream extends InputStream implements InputStreaming
Modifier and Type | Field and Description |
---|---|
protected ByteBuffer |
m_buf
The ByteBuffer object from which data is read.
|
Constructor and Description |
---|
ByteBufferInputStream(ByteBuffer buffer)
Construct a ByteBufferInputStream on a ByteBuffer object.
|
Modifier and Type | Method and Description |
---|---|
int |
available()
Returns the number of bytes that can be read (or skipped over) from this input stream without blocking by the next caller of a method for this input stream.
|
void |
close()
Close the stream, flushing any accumulated bytes.
|
ByteBuffer |
getByteBuffer()
Obtain the ByteBuffer that this InputStream is based on.
|
void |
mark(int readlimit)
Marks the current position in this input stream.
|
boolean |
markSupported()
Tests if this input stream supports the
mark and reset methods. |
protected NullPointerException |
potentialStreamClosedException(NullPointerException e)
Check if an NPE is caused by the stream being closed.
|
int |
read()
Reads the next byte of data from the input stream.
|
int |
read(byte[] abDest, int ofDest, int cbDest)
Reads up to
len bytes of data from the input stream into an array of bytes. |
void |
reset()
Repositions this stream to the position at the time the
mark method was last called on this input stream. |
long |
skip(long lcb)
Skips over and discards
n bytes of data from this input stream. |
read
protected ByteBuffer m_buf
public ByteBufferInputStream(ByteBuffer buffer)
buffer
- the ByteBuffer to read the data frompublic ByteBuffer getByteBuffer()
public int read() throws IOException
int
in the range 0
to 255
. If no byte is available because the end of the stream has been reached, the value -1
is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.read
in interface com.oracle.common.io.InputStreaming
read
in class InputStream
-1
if the end of the stream is reachedIOException
- if an I/O error occurspublic int read(byte[] abDest, int ofDest, int cbDest) throws IOException
len
bytes of data from the input stream into an array of bytes. An attempt is made to read as many as len
bytes, but a smaller number may be read, possibly zero. The number of bytes actually read is returned as an integer.read
in interface com.oracle.common.io.InputStreaming
read
in class InputStream
abDest
- the buffer into which the data is readofDest
- the start offset in array b
at which the data is writtencbDest
- the maximum number of bytes to read-1
if there is no more data because the end of the stream has been reached.IOException
- if an I/O error occurspublic long skip(long lcb) throws IOException
n
bytes of data from this input stream. The skip
method may, for a variety of reasons, end up skipping over some smaller number of bytes, possibly 0
. This may result from any of a number of conditions; reaching end of file before n
bytes have been skipped is only one possibility. The actual number of bytes skipped is returned. If n
is negative, no bytes are skipped.skip
in interface com.oracle.common.io.InputStreaming
skip
in class InputStream
lcb
- the number of bytes to be skippedIOException
- if an I/O error occurspublic int available() throws IOException
available
in interface com.oracle.common.io.InputStreaming
available
in class InputStream
IOException
- if an I/O error occurspublic void mark(int readlimit)
reset
method repositions this stream at the last marked position so that subsequent reads re-read the same bytes.mark
in interface com.oracle.common.io.InputStreaming
mark
in class InputStream
readlimit
- the maximum limit of bytes that can be read before the mark position becomes invalidpublic void reset() throws IOException
mark
method was last called on this input stream.reset
in interface com.oracle.common.io.InputStreaming
reset
in class InputStream
IOException
- if an I/O error occurs.public boolean markSupported()
mark
and reset
methods. The markSupported
method of InputStream
returns false
.markSupported
in interface com.oracle.common.io.InputStreaming
markSupported
in class InputStream
true
if this true type supports the mark and reset method; false
otherwisepublic void close() throws IOException
close
in interface com.oracle.common.io.InputStreaming
close
in interface Closeable
close
in interface AutoCloseable
close
in class InputStream
IOException
- if an I/O error occurs.protected NullPointerException potentialStreamClosedException(NullPointerException e) throws IOException
e
- an NPEIOException
- if the stream is closed