org.apache.derby.client.am
Class UpdateSensitiveClobLocatorInputStream

java.lang.Object
  java.io.InputStream
      org.apache.derby.client.am.UpdateSensitiveLOBLocatorInputStream
          org.apache.derby.client.am.UpdateSensitiveClobLocatorInputStream

All Implemented Interfaces:

java.io.Closeable

public class UpdateSensitiveClobLocatorInputStream
extends UpdateSensitiveLOBLocatorInputStream

This class extends from the UpdateSensitiveLOBLocatorInputStream and creates and returns an implementation of the Clob specific locator InputStream. It also over-rides the reCreateStream method which re-creates the underlying Clob locator stream whenever a update happens on the Clob object associated with this stream.

Field Summary

private Clob

clob

Fields inherited from class org.apache.derby.client.am.UpdateSensitiveLOBLocatorInputStream

con, currentPos, length

Constructor Summary

UpdateSensitiveClobLocatorInputStream(Connection con, Clob clob)
Creates an instance of the ClobLocatorInputStream wrapped in a BufferedInputStream and and calls the super class constructor with appropriate initializers.

Method Summary

protected java.io.InputStream

reCreateStream() Re-creates the underlying Locator stream with the current position and the length values if specified.

Methods inherited from class org.apache.derby.client.am.UpdateSensitiveLOBLocatorInputStream

close, read, read

Methods inherited from class java.io.InputStream

available, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

clob

private Clob clob

Constructor Detail

UpdateSensitiveClobLocatorInputStream

public UpdateSensitiveClobLocatorInputStream(Connection con,
                                             Clob clob)
                                      throws SqlException

Creates an instance of the ClobLocatorInputStream wrapped in a BufferedInputStream and and calls the super class constructor with appropriate initializers.

Parameters:

con - connection to be used to read the Clob value from the server

clob - Clob object that contains locator for the Clob value on the server.

Throws:

SqlException - If any exception occurs during stream creation.

Method Detail

reCreateStream

protected java.io.InputStream reCreateStream()
                                      throws SqlException

Re-creates the underlying Locator stream with the current position and the length values if specified.

Specified by:

reCreateStream in class UpdateSensitiveLOBLocatorInputStream

Throws:

SqlException