org.exolab.castor.jdo.engine
Class ClobImpl

java.lang.Object
  org.exolab.castor.jdo.engine.ClobImpl

All Implemented Interfaces:

java.sql.Clob

public class ClobImpl

extends java.lang.Object

implements java.sql.Clob

This is an implementation of java.sql.Clob interface that is constructed from java.io.Reader, in needs information about the length of the stream (which is not provided by java.io.Reader interface).

It is useful for setting CLOB values in the database.

Note: This implementation does not attempt to implement features of JDBC3 or JDBC4.

Version:

$Revision: 7121 $

Author:

Oleg Nitz, Adam Esterline

Constructor Summary

ClobImpl(java.io.Reader reader, long length)
Construct an ClobImpl instance.

Method Summary

void	free() Not implemented.
java.io.InputStream	getAsciiStream()
java.io.Reader	getCharacterStream()
java.io.Reader	getCharacterStream(long pos, long length) Not implemented.
java.lang.String	getSubString(long pos, int length)
long	length()
long	position(java.sql.Clob searchstr, long start) Not implemented, I guess it is not needed for writing CLOB.
long	position(java.lang.String searchstr, long start) Not implemented, I guess it is not needed for writing CLOB.
java.io.OutputStream	setAsciiStream(long pos) Not implemented.
java.io.Writer	setCharacterStream(long pos) Not implemented.
int	setString(long pos, java.lang.String str) Not implemented.
int	setString(long pos, java.lang.String str, int offset, int len) Not implemented.
void	truncate(long len) Not implemented.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClobImpl

public ClobImpl(java.io.Reader reader,
                long length)

Construct an ClobImpl instance.
Examples:
new ClobImpl(new StringReader(str), str.length())
new ClobImpl(new FileReader(file), file.length())

Method Detail

getAsciiStream

public java.io.InputStream getAsciiStream()

Specified by:

getAsciiStream in interface java.sql.Clob

getCharacterStream

public java.io.Reader getCharacterStream()

Specified by:

getCharacterStream in interface java.sql.Clob

length

public long length()

Specified by:

length in interface java.sql.Clob

getSubString

public java.lang.String getSubString(long pos,
                                     int length)
                              throws java.sql.SQLException

Specified by:

getSubString in interface java.sql.Clob

Throws:

java.sql.SQLException

position

public long position(java.sql.Clob searchstr,
                     long start)

Not implemented, I guess it is not needed for writing CLOB.

Specified by:

position in interface java.sql.Clob

position

public long position(java.lang.String searchstr,
                     long start)

Not implemented, I guess it is not needed for writing CLOB.

Specified by:

position in interface java.sql.Clob

setAsciiStream

public java.io.OutputStream setAsciiStream(long pos)
                                    throws java.sql.SQLException

Not implemented. Added to make ClobImpl compliant with JDBC 3.0, which is a part of JDK1.4.

Specified by:

setAsciiStream in interface java.sql.Clob

Throws:

java.sql.SQLException

setCharacterStream

public java.io.Writer setCharacterStream(long pos)
                                  throws java.sql.SQLException

Not implemented. Added to make ClobImpl compliant with JDBC 3.0, which is a part of JDK1.4.

Specified by:

setCharacterStream in interface java.sql.Clob

Throws:

java.sql.SQLException

setString

public int setString(long pos,
                     java.lang.String str)
              throws java.sql.SQLException

Not implemented. Added to make ClobImpl compliant with JDBC 3.0, which is a part of JDK1.4.

Specified by:

setString in interface java.sql.Clob

Throws:

java.sql.SQLException

setString

public int setString(long pos,
                     java.lang.String str,
                     int offset,
                     int len)
              throws java.sql.SQLException

Not implemented. Added to make ClobImpl compliant with JDBC 3.0, which is a part of JDK1.4.

Specified by:

setString in interface java.sql.Clob

Throws:

java.sql.SQLException

truncate

public void truncate(long len)
              throws java.sql.SQLException

Not implemented. Added to make ClobImpl compliant with JDBC 3.0, which is a part of JDK1.4.

Specified by:

truncate in interface java.sql.Clob

Throws:

java.sql.SQLException

getCharacterStream

public java.io.Reader getCharacterStream(long pos,
                                         long length)

Not implemented. Added to make ClobImpl compliant with JDBC 4.0, which is a part of JDK6.

free

public void free()

Not implemented. Added to make ClobImpl compliant with JDBC 4.0, which is a part of JDK6.