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ClobStringTypeHandler (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.orm.ibatis.support
Class ClobStringTypeHandler

java.lang.Object
  com.ibatis.sqlmap.engine.type.BaseTypeHandler
      org.springframework.orm.ibatis.support.AbstractLobTypeHandler
          org.springframework.orm.ibatis.support.ClobStringTypeHandler

All Implemented Interfaces:

com.ibatis.sqlmap.engine.type.TypeHandler

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public class ClobStringTypeHandler
extends AbstractLobTypeHandler

iBATIS TypeHandler implementation for Strings that get mapped to CLOBs. Retrieves the LobHandler to use from SqlMapClientFactoryBean at config time.

Particularly useful for storing Strings with more than 4000 characters in an Oracle database (only possible via CLOBs), in combination with OracleLobHandler.

Can also be defined in generic iBATIS mappings, as DefaultLobCreator will work with most JDBC-compliant database drivers. In this case, the field type does not have to be BLOB: For databases like MySQL and MS SQL Server, any large enough binary type will work.

Since:

1.1.5

Author:

Juergen Hoeller

See Also:

SqlMapClientFactoryBean.setLobHandler(org.springframework.jdbc.support.lob.LobHandler)

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Field Summary

 

Fields inherited from class org.springframework.orm.ibatis.support.AbstractLobTypeHandler
LOB_CREATOR_SYNCHRONIZATION_ORDER

 

Constructor Summary
	ClobStringTypeHandler()           Constructor used by iBATIS: fetches config-time LobHandler from SqlMapClientFactoryBean.
protected	ClobStringTypeHandler(LobHandler lobHandler)           Constructor used for testing: takes an explicit LobHandler.

 

Method Summary
protected  Object	getResultInternal(ResultSet rs, int index, LobHandler lobHandler)           Template method to extract a value from the given result set.
protected  void	setParameterInternal(PreparedStatement ps, int index, Object value, String jdbcType, LobCreator lobCreator)           Template method to set the given value on the given statement.
Object	valueOf(String s)

 

Methods inherited from class org.springframework.orm.ibatis.support.AbstractLobTypeHandler
getResult, getResult, getResult, setParameter

 

Methods inherited from class com.ibatis.sqlmap.engine.type.BaseTypeHandler
equals

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

ClobStringTypeHandler

public ClobStringTypeHandler()

Constructor used by iBATIS: fetches config-time LobHandler from SqlMapClientFactoryBean.

See Also:

SqlMapClientFactoryBean.getConfigTimeLobHandler()

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ClobStringTypeHandler

protected ClobStringTypeHandler(LobHandler lobHandler)

Constructor used for testing: takes an explicit LobHandler.

Method Detail

setParameterInternal

protected void setParameterInternal(PreparedStatement ps,
                                    int index,
                                    Object value,
                                    String jdbcType,
                                    LobCreator lobCreator)
                             throws SQLException

Description copied from class: AbstractLobTypeHandler

Template method to set the given value on the given statement.

Specified by:

setParameterInternal in class AbstractLobTypeHandler

Parameters:

ps - the PreparedStatement to set on

index - the statement parameter index

value - the parameter value to set

jdbcType - the JDBC type of the parameter

lobCreator - the LobCreator to use

Throws:

SQLException - if thrown by JDBC methods

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getResultInternal

protected Object getResultInternal(ResultSet rs,
                                   int index,
                                   LobHandler lobHandler)
                            throws SQLException

Description copied from class: AbstractLobTypeHandler

Template method to extract a value from the given result set.

Specified by:

getResultInternal in class AbstractLobTypeHandler

Parameters:

rs - the ResultSet to extract from

index - the index in the ResultSet

lobHandler - the LobHandler to use

Returns:

the extracted value

Throws:

SQLException - if thrown by JDBC methods

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valueOf

public Object valueOf(String s)

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