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org.postgresql.gss

public Class GSSInputStream

extends InputStream
Class Inheritance
Static Imports
org.postgresql.util.internal.Nullness.castNonNull

Field Summary

Modifier and TypeField and Description
private final GSSContext
gssContext

private final MessageProp
messageProp

pack-priv @Nullable byte[]
unencrypted

pack-priv int
unencryptedLength

pack-priv int
unencryptedPos

private final InputStream
wrapped

Constructor Summary

AccessConstructor and Description
public
GSSInputStream(InputStream wrapped, GSSContext gssContext, MessageProp messageProp)

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.
buffer, int
the start offset in array b at which the data is written.
pos, int
the maximum number of bytes to read.
len)

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:
availableclosemarkmarkSupportednullInputStreamreadreadAllBytesreadNBytesreadNBytesresetskipskipNBytestransferTo

Field Detail

gssContextback to summary
private final GSSContext gssContext
messagePropback to summary
private final MessageProp messageProp
unencryptedback to summary
pack-priv @Nullable byte[] unencrypted
unencryptedLengthback to summary
pack-priv int unencryptedLength
unencryptedPosback to summary
pack-priv int unencryptedPos
wrappedback to summary
private final InputStream wrapped

Constructor Detail

GSSInputStreamback to summary
public GSSInputStream(InputStream wrapped, GSSContext gssContext, MessageProp messageProp)

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[] buffer, int pos, int len) 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
buffer:byte[]

the buffer into which the data is read.

pos:int

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

len: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.