java.lang.Object
- org.springframework.jdbc.support.lob.AbstractLobHandler

All Implemented Interfaces:
LobHandler
Direct Known Subclasses:
DefaultLobHandler
```
public abstract class AbstractLobHandler
extends 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
Constructors
Constructor Description
AbstractLobHandler()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`InputStream`	`getBlobAsBinaryStream(ResultSet rs, String columnName)`	Retrieve the given column as binary stream from the given ResultSet.
`byte[]`	`getBlobAsBytes(ResultSet rs, String columnName)`	Retrieve the given column as bytes from the given ResultSet.
`InputStream`	`getClobAsAsciiStream(ResultSet rs, String columnName)`	Retrieve the given column as ASCII stream from the given ResultSet.
`Reader`	`getClobAsCharacterStream(ResultSet rs, String columnName)`	Retrieve the given column as character stream from the given ResultSet.
`String`	`getClobAsString(ResultSet rs, 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
```
@Nullable
public byte[] getBlobAsBytes(ResultSet rs,
                             String columnName)
                      throws 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:
    SQLException - if thrown by JDBC methods
    See Also:
    ResultSet.getBytes(int)
  - getBlobAsBinaryStream
```
@Nullable
public InputStream getBlobAsBinaryStream(ResultSet rs,
                                         String columnName)
                                  throws 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:
    SQLException - if thrown by JDBC methods
    See Also:
    ResultSet.getBinaryStream(int)
  - getClobAsString
```
@Nullable
public String getClobAsString(ResultSet rs,
                              String columnName)
                       throws 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:
    SQLException - if thrown by JDBC methods
    See Also:
    ResultSet.getString(int)
  - getClobAsAsciiStream
```
@Nullable
public InputStream getClobAsAsciiStream(ResultSet rs,
                                        String columnName)
                                 throws 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:
    SQLException - if thrown by JDBC methods
    See Also:
    ResultSet.getAsciiStream(int)
  - getClobAsCharacterStream
```
public Reader getClobAsCharacterStream(ResultSet rs,
                                       String columnName)
                                throws 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:
    SQLException - if thrown by JDBC methods
    See Also:
    ResultSet.getCharacterStream(int)

Class AbstractLobHandler

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface org.springframework.jdbc.support.lob.LobHandler

Constructor Detail

AbstractLobHandler

Method Detail

getBlobAsBytes

getBlobAsBinaryStream

getClobAsString

getClobAsAsciiStream

getClobAsCharacterStream