Spring Framework

org.springframework.jdbc.support.lob
Class AbstractLobHandler

java.lang.Object
  extended by org.springframework.jdbc.support.lob.AbstractLobHandler
All Implemented Interfaces:
LobHandler
Direct Known Subclasses:
DefaultLobHandler, OracleLobHandler

public abstract class AbstractLobHandler
extends java.lang.Object
implements LobHandler

Abstract base class for LobHandler implementations.

Implements all accessor methods for column names through a column lookup and delegating to the corresponding accessor that takes a column index.

Since:
1.2
Author:
Juergen Hoeller
See Also:
ResultSet.findColumn(java.lang.String)

Constructor Summary
AbstractLobHandler()
           
 
Method Summary
 java.io.InputStream getBlobAsBinaryStream(java.sql.ResultSet rs, java.lang.String columnName)
          Retrieve the given column as binary stream from the given ResultSet.
 byte[] getBlobAsBytes(java.sql.ResultSet rs, java.lang.String columnName)
          Retrieve the given column as bytes from the given ResultSet.
 java.io.InputStream getClobAsAsciiStream(java.sql.ResultSet rs, java.lang.String columnName)
          Retrieve the given column as ASCII stream from the given ResultSet.
 java.io.Reader getClobAsCharacterStream(java.sql.ResultSet rs, java.lang.String columnName)
          Retrieve the given column as character stream from the given ResultSet.
 java.lang.String getClobAsString(java.sql.ResultSet rs, java.lang.String columnName)
          Retrieve the given column as String from the given ResultSet.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.springframework.jdbc.support.lob.LobHandler
getBlobAsBinaryStream, getBlobAsBytes, getClobAsAsciiStream, getClobAsCharacterStream, getClobAsString, getLobCreator
 

Constructor Detail

AbstractLobHandler

public AbstractLobHandler()
Method Detail

getBlobAsBytes

public byte[] getBlobAsBytes(java.sql.ResultSet rs,
                             java.lang.String columnName)
                      throws java.sql.SQLException
Description copied from interface: LobHandler
Retrieve the given column as bytes from the given ResultSet. Might simply invoke ResultSet.getBytes or work with ResultSet.getBlob, depending on the database and driver.

Specified by:
getBlobAsBytes in interface LobHandler
Parameters:
rs - the ResultSet to retrieve the content from
columnName - the column name to use
Returns:
the content as byte array, or null in case of SQL NULL
Throws:
java.sql.SQLException - if thrown by JDBC methods
See Also:
ResultSet.getBytes(int)

getBlobAsBinaryStream

public java.io.InputStream getBlobAsBinaryStream(java.sql.ResultSet rs,
                                                 java.lang.String columnName)
                                          throws java.sql.SQLException
Description copied from interface: LobHandler
Retrieve the given column as binary stream from the given ResultSet. Might simply invoke ResultSet.getBinaryStream or work with ResultSet.getBlob, depending on the database and driver.

Specified by:
getBlobAsBinaryStream in interface LobHandler
Parameters:
rs - the ResultSet to retrieve the content from
columnName - the column name to use
Returns:
the content as binary stream, or null in case of SQL NULL
Throws:
java.sql.SQLException - if thrown by JDBC methods
See Also:
ResultSet.getBinaryStream(int)

getClobAsString

public java.lang.String getClobAsString(java.sql.ResultSet rs,
                                        java.lang.String columnName)
                                 throws java.sql.SQLException
Description copied from interface: LobHandler
Retrieve the given column as String from the given ResultSet. Might simply invoke ResultSet.getString or work with ResultSet.getClob, depending on the database and driver.

Specified by:
getClobAsString in interface LobHandler
Parameters:
rs - the ResultSet to retrieve the content from
columnName - the column name to use
Returns:
the content as String, or null in case of SQL NULL
Throws:
java.sql.SQLException - if thrown by JDBC methods
See Also:
ResultSet.getString(int)

getClobAsAsciiStream

public java.io.InputStream getClobAsAsciiStream(java.sql.ResultSet rs,
                                                java.lang.String columnName)
                                         throws java.sql.SQLException
Description copied from interface: LobHandler
Retrieve the given column as ASCII stream from the given ResultSet. Might simply invoke ResultSet.getAsciiStream or work with ResultSet.getClob, depending on the database and driver.

Specified by:
getClobAsAsciiStream in interface LobHandler
Parameters:
rs - the ResultSet to retrieve the content from
columnName - the column name to use
Returns:
the content as ASCII stream, or null in case of SQL NULL
Throws:
java.sql.SQLException - if thrown by JDBC methods
See Also:
ResultSet.getAsciiStream(int)

getClobAsCharacterStream

public java.io.Reader getClobAsCharacterStream(java.sql.ResultSet rs,
                                               java.lang.String columnName)
                                        throws java.sql.SQLException
Description copied from interface: LobHandler
Retrieve the given column as character stream from the given ResultSet. Might simply invoke ResultSet.getCharacterStream or work with ResultSet.getClob, depending on the database and driver.

Specified by:
getClobAsCharacterStream in interface LobHandler
Parameters:
rs - the ResultSet to retrieve the content from
columnName - the column name to use
Returns:
the content as character stream
Throws:
java.sql.SQLException - if thrown by JDBC methods
See Also:
ResultSet.getCharacterStream(int)

Spring Framework