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java.lang.Objectorg.apache.derby.impl.jdbc.ConnectionChild
org.apache.derby.impl.jdbc.EmbedBlob
Field Summary | |
private BinaryToRawStream |
biStream
|
private static int |
BLOB_BUF_SIZE
|
private byte[] |
buf
|
private boolean |
isBytes
|
private byte[] |
myBytes
|
private java.io.InputStream |
myStream
|
private long |
pos
|
Fields inherited from class org.apache.derby.impl.jdbc.ConnectionChild |
CLOSE, factory, localConn, NOCLOSE |
Constructor Summary | |
protected |
EmbedBlob(DataValueDescriptor dvd,
EmbedConnection con)
|
Method Summary | |
private boolean |
checkMatch(java.sql.Blob pattern)
|
private boolean |
checkMatch(byte[] pattern)
|
protected void |
finalize()
|
java.io.InputStream |
getBinaryStream()
Retrieves the BLOB designated by this
Blob instance as a stream. |
byte[] |
getBytes(long startPos,
int length)
Returns as an array of bytes part or all of the BLOB
value that this Blob object designates. |
private java.sql.SQLException |
handleMyExceptions(java.lang.Throwable t)
|
long |
length()
Returns the number of bytes in the BLOB value
designated by this Blob object. |
long |
position(java.sql.Blob pattern,
long start)
Determines the byte position in the BLOB value
designated by this Blob object at which
pattern begins. |
long |
position(byte[] pattern,
long start)
Determines the byte position at which the specified byte pattern begins within the BLOB
value that this Blob object represents. |
private int |
read()
|
java.io.OutputStream |
setBinaryStream(long pos)
JDBC 3.0 Retrieves a stream that can be used to write to the BLOB value that this Blob object represents. |
int |
setBytes(long pos,
byte[] bytes)
JDBC 3.0 Writes the given array of bytes to the BLOB value that this Blob object represents, starting at position pos, and returns the number of bytes written. |
int |
setBytes(long pos,
byte[] bytes,
int offset,
int len)
JDBC 3.0 Writes all or part of the given array of byte array to the BLOB value that this Blob object represents and returns the number of bytes written. |
private void |
setPosition(long newPos)
|
void |
truncate(long len)
JDBC 3.0 Truncates the BLOB value that this Blob object represents to be len bytes in length. |
Methods inherited from class org.apache.derby.impl.jdbc.ConnectionChild |
commitIfAutoCommit, commitIfNeeded, getCal, getConnectionSynchronization, getContextManager, getDatabase, getEmbedConnection, handleException, handleException, needCommit, newSQLException, newSQLException, newSQLException, restoreContextStack, setupContextStack |
Methods inherited from class java.lang.Object |
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
private boolean isBytes
private java.io.InputStream myStream
private byte[] myBytes
private long pos
private BinaryToRawStream biStream
private static int BLOB_BUF_SIZE
private byte[] buf
Constructor Detail |
protected EmbedBlob(DataValueDescriptor dvd, EmbedConnection con) throws StandardException
Method Detail |
private void setPosition(long newPos) throws StandardException, java.io.IOException
StandardException
java.io.IOException
private int read() throws java.io.IOException
java.io.IOException
public long length() throws java.sql.SQLException
BLOB
value
designated by this Blob
object.
length
in interface java.sql.Blob
BLOB
in bytes
java.sql.SQLException
- if there is an error accessing the
length of the BLOB
public byte[] getBytes(long startPos, int length) throws java.sql.SQLException
BLOB
value that this Blob
object designates. The byte
array contains up to length
consecutive bytes
starting at position pos
.
getBytes
in interface java.sql.Blob
length
- is the number of consecutive bytes to be copied
length
consecutive bytes from the BLOB
value designated
by this Blob
object, starting with the
byte at position pos
.
java.sql.SQLException
- if there is an error accessing the
BLOB
NOTE: return new byte[0] if startPos is too largepublic java.io.InputStream getBinaryStream() throws java.sql.SQLException
BLOB
designated by this
Blob
instance as a stream.
getBinaryStream
in interface java.sql.Blob
BLOB
data
java.sql.SQLException
- if there is an error accessing the
BLOB
public long position(byte[] pattern, long start) throws java.sql.SQLException
pattern
begins within the BLOB
value that this Blob
object represents. The
search for patternstart
position
in interface java.sql.Blob
pattern
- the byte array for which to searchstart
- the position at which to begin searching; the
first position is 1
java.sql.SQLException
- if there is an error accessing the
BLOB
private boolean checkMatch(byte[] pattern) throws java.io.IOException
java.io.IOException
public long position(java.sql.Blob pattern, long start) throws java.sql.SQLException
BLOB
value
designated by this Blob
object at which
pattern
begins. The search begins at position
start
.
position
in interface java.sql.Blob
pattern
- the Blob
object designating
the BLOB
value for which to searchstart
- the position in the BLOB
value
at which to begin searching; the first position is 1
java.sql.SQLException
- if there is an error accessing the
BLOB
private boolean checkMatch(java.sql.Blob pattern) throws java.io.IOException
java.io.IOException
private java.sql.SQLException handleMyExceptions(java.lang.Throwable t) throws java.sql.SQLException
java.sql.SQLException
protected void finalize()
public int setBytes(long pos, byte[] bytes) throws java.sql.SQLException
setBytes
in interface java.sql.Blob
pos
- - the position in the BLOB object at which to start writingbytes
- - the array of bytes to be written to the BLOB value that this
Blob object represents
java.sql.SQLException
- Feature not implemented for now.public int setBytes(long pos, byte[] bytes, int offset, int len) throws java.sql.SQLException
setBytes
in interface java.sql.Blob
pos
- - the position in the BLOB object at which to start writingbytes
- - the array of bytes to be written to the BLOB value that this
Blob object representsoffset
- - the offset into the array bytes at which to start reading
the bytes to be setlen
- - the number of bytes to be written to the BLOB value from the
array of bytes bytes
java.sql.SQLException
- Feature not implemented for now.public java.io.OutputStream setBinaryStream(long pos) throws java.sql.SQLException
setBinaryStream
in interface java.sql.Blob
pos
- - the position in the BLOB object at which to start writing
java.sql.SQLException
- Feature not implemented for now.public void truncate(long len) throws java.sql.SQLException
truncate
in interface java.sql.Blob
len
- - the length, in bytes, to which the BLOB value that this Blob
object represents should be truncated
java.sql.SQLException
- Feature not implemented for now.
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