Top Description Fields Constructors Methods
org.h2.store

public Class LobStorageRemoteInputStream

extends InputStream
Class Inheritance
Imports
java.io.IOException, .InputStream, org.h2.engine.SessionRemote, org.h2.message.DbException, org.h2.mvstore.DataUtils
An input stream used by the client side of a tcp connection to fetch LOB data on demand from the server.

Field Summary

Modifier and TypeField and Description
private final byte[]
hmac

private final long
lobId

The lob id.

private long
pos

The position.

private final SessionRemote
sessionRemote

Constructor Summary

AccessConstructor and Description
public
LobStorageRemoteInputStream(SessionRemote handler, long lobId, byte[] hmac)

Method Summary

Modifier and TypeMethod and Description
public int
read()

Implements abstract java.io.InputStream.read.

Reads the next byte of data from the input stream.

public int
read(byte[]
the buffer into which the data is read.
buff)

Overrides java.io.InputStream.read.

Reads some number of bytes from the input stream and stores them into the buffer array b.

public int
read(byte[]
the buffer into which the data is read.
buff, int
the start offset in array b at which the data is written.
off, int
the maximum number of bytes to read.
length)

Overrides java.io.InputStream.read.

Reads up to len bytes of data from the input stream into an array of bytes.

Inherited from java.io.InputStream:
availableclosemarkmarkSupportednullInputStreamreadAllBytesreadNBytesreadNBytesresetskipskipNBytestransferTo

Field Detail

hmacback to summary
private final byte[] hmac
lobIdback to summary
private final long lobId

The lob id.

posback to summary
private long pos

The position.

sessionRemoteback to summary
private final SessionRemote sessionRemote

Constructor Detail

LobStorageRemoteInputStreamback to summary
public LobStorageRemoteInputStream(SessionRemote handler, long lobId, byte[] hmac)

Method Detail

readback to summary
public int read() throws IOException

Implements abstract java.io.InputStream.read.

Doc from java.io.InputStream.read.

Reads the next byte of data from the input stream. The value byte is returned as an 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.

Returns:int

the next byte of data, or -1 if the end of the stream is reached.

Annotations
@Override
Exceptions
IOException:
if an I/O error occurs.
readback to summary
public int read(byte[] buff) throws IOException

Overrides java.io.InputStream.read.

Doc from java.io.InputStream.read.

Reads some number of bytes from the input stream and stores them into the buffer array b. The number of bytes actually read is returned as an integer. This method blocks until input data is available, end of file is detected, or an exception is thrown.

If the length of b is zero, then no bytes are read and 0 is returned; otherwise, there is an attempt to read at least one byte. If no byte is available because the stream is at the end of the file, the value -1 is returned; otherwise, at least one byte is read and stored into b.

The first byte read is stored into element b[0], the next one into b[1], and so on. The number of bytes read is, at most, equal to the length of b. Let k be the number of bytes actually read; these bytes will be stored in elements b[0] through b[k-1], leaving elements b[k] through b[b.length-1] unaffected.

Parameters
buff:byte[]

the buffer into which the data is read.

Returns:int

the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

Annotations
@Override
Exceptions
IOException:
If the first byte cannot be read for any reason other than the end of the file, if the input stream has been closed, or if some other I/O error occurs.
readback to summary
public int read(byte[] buff, int off, int length) throws IOException

Overrides java.io.InputStream.read.

Doc from java.io.InputStream.read.

Reads up to 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. The number of bytes actually read is returned as an integer.

This method blocks until input data is available, end of file is detected, or an exception is thrown.

If len is zero, then no bytes are read and 0 is returned; otherwise, there is an attempt to read at least one byte. If no byte is available because the stream is at end of file, the value -1 is returned; otherwise, at least one byte is read and stored into b.

The first byte read is stored into element b[off], the next one into b[off+1], and so on. The number of bytes read is, at most, equal to len. Let k be the number of bytes actually read; these bytes will be stored in elements b[off] through b[off+k-1], leaving elements b[off+k] through b[off+len-1] unaffected.

In every case, elements b[0] through b[off-1] and elements b[off+len] through b[b.length-1] are unaffected.

Parameters
buff:byte[]

the buffer into which the data is read.

off:int

the start offset in array b at which the data is written.

length:int

the maximum number of bytes to read.

Returns:int

the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

Annotations
@Override
Exceptions
IOException:
If the first byte cannot be read for any reason other than end of file, or if the input stream has been closed, or if some other I/O error occurs.