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java.lang.Objectjava.io.InputStream
org.postgresql.largeobject.BlobInputStream
public class BlobInputStream
This is an implementation of an InputStream from a large object.
| Constructor Summary | |
|---|---|
BlobInputStream(LargeObject lo)
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BlobInputStream(LargeObject lo,
int bsize)
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| Method Summary | |
|---|---|
void |
close()
Closes this input stream and releases any system resources associated with the stream. |
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. |
int |
read()
The minimum required to implement input stream |
void |
reset()
Repositions this stream to the position at the time the mark method was last called on this input stream. |
| Methods inherited from class java.io.InputStream |
|---|
available, read, read, skip |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public BlobInputStream(LargeObject lo)
lo - LargeObject to read from
public BlobInputStream(LargeObject lo,
int bsize)
lo - LargeObject to read frombsize - buffer size| Method Detail |
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public int read()
throws java.io.IOException
read in class java.io.InputStreamjava.io.IOException
public void close()
throws java.io.IOException
The close method of InputStream does
nothing.
close in interface java.io.Closeableclose in class java.io.InputStreamjava.io.IOException - if an I/O error occurs.public void mark(int readlimit)
reset method repositions this stream at the last marked
position so that subsequent reads re-read the same bytes.
The readlimit arguments tells this input stream to
allow that many bytes to be read before the mark position gets
invalidated.
The general contract of mark is that, if the method
markSupported returns true, the stream somehow
remembers all the bytes read after the call to mark and
stands ready to supply those same bytes again if and whenever the method
reset is called. However, the stream is not required to
remember any data at all if more than readlimit bytes are
read from the stream before reset is called.
The mark method of InputStream does
nothing.
mark in class java.io.InputStreamreadlimit - the maximum limit of bytes that can be read before
the mark position becomes invalid.InputStream.reset()
public void reset()
throws java.io.IOException
mark method was last called on this input stream.
NB: If mark is not called we move to the begining.
reset in class java.io.InputStreamjava.io.IOExceptionInputStream.mark(int),
IOExceptionpublic boolean markSupported()
mark and
reset methods. The markSupported method of
InputStream returns false.
markSupported in class java.io.InputStreamtrue if this true type supports the mark and reset
method; false otherwise.InputStream.mark(int),
InputStream.reset()
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