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

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org.springframework.orm.hibernate.support
Class BlobSerializableType

java.lang.Object
  org.springframework.orm.hibernate.support.AbstractLobType
      org.springframework.orm.hibernate.support.BlobSerializableType

All Implemented Interfaces:: net.sf.hibernate.UserType

public class BlobSerializableType
extends AbstractLobType
extends AbstractLobType

Hibernate UserType implementation for arbitrary objects that get serialized to BLOBs. Retrieves the LobHandler to use from LocalSessionFactoryBean at config time.

Can also be defined in generic Hibernate 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
Author:: Juergen Hoeller
See Also:: LocalSessionFactoryBean.setLobHandler(org.springframework.jdbc.support.lob.LobHandler)

Field Summary

Fields inherited from class org.springframework.orm.hibernate.support.AbstractLobType

LOB_CREATOR_SYNCHRONIZATION_ORDER, logger

Constructor Summary

BlobSerializableType()
          Constructor used by Hibernate: fetches config-time LobHandler and config-time JTA TransactionManager from LocalSessionFactoryBean.

protected BlobSerializableType(LobHandler lobHandler, TransactionManager jtaTransactionManager)
          Constructor used for testing: takes an explicit LobHandler and an explicit JTA TransactionManager (can be null).

Method Summary

Object deepCopy(Object value)
          This implementation returns the passed-in value as-is.

boolean isMutable()
          This implementation returns false.

protected Object nullSafeGetInternal(ResultSet rs, int index, LobHandler lobHandler)
          Template method to extract a value from the given result set.

protected void nullSafeSetInternal(PreparedStatement ps, int index, Object value, LobCreator lobCreator)
          Template method to set the given parameter value on the given statement.

Class returnedClass()


int[] sqlTypes()


Methods inherited from class org.springframework.orm.hibernate.support.AbstractLobType

equals, nullSafeGet, nullSafeSet

Methods inherited from class java.lang.Object

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

Fields inherited from class org.springframework.orm.hibernate.support.AbstractLobType
`LOB_CREATOR_SYNCHRONIZATION_ORDER, logger`

Constructor Summary
	`BlobSerializableType()` Constructor used by Hibernate: fetches config-time LobHandler and config-time JTA TransactionManager from LocalSessionFactoryBean.
`protected`	`BlobSerializableType(LobHandler lobHandler, TransactionManager jtaTransactionManager)` Constructor used for testing: takes an explicit LobHandler and an explicit JTA TransactionManager (can be `null`).

Method Summary
`Object`	`deepCopy(Object value)` This implementation returns the passed-in value as-is.
`boolean`	`isMutable()` This implementation returns false.
`protected Object`	`nullSafeGetInternal(ResultSet rs, int index, LobHandler lobHandler)` Template method to extract a value from the given result set.
`protected void`	`nullSafeSetInternal(PreparedStatement ps, int index, Object value, LobCreator lobCreator)` Template method to set the given parameter value on the given statement.
`Class`	`returnedClass()`
`int[]`	`sqlTypes()`

Methods inherited from class org.springframework.orm.hibernate.support.AbstractLobType
`equals, nullSafeGet, nullSafeSet`

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

Constructor Detail