將AbstractLobType移植到Hibernate 4和Spring 3.2中

Question

我正在使用Hibernate 3和Spring 3.0。我想遷移到Hibernate 4和Spring 3.2。我使用的AbstractLobType子類來實現從一個InputStream映射到數據庫（MySQL的LONGBLOB）一個用戶類型：

import java.io.InputStream; 
import java.sql.PreparedStatement; 
import java.sql.ResultSet; 
import java.sql.SQLException; 
import java.sql.Types; 

import org.hibernate.HibernateException; 
import org.springframework.jdbc.support.lob.LobCreator; 
import org.springframework.jdbc.support.lob.LobHandler; 
import org.springframework.orm.hibernate3.support.AbstractLobType; 

public class BlobUserType extends AbstractLobType { 

public int[] sqlTypes() { 
    return new int[] { Types.BLOB }; 
} 

public Class returnedClass() { 
    return InputStream.class; 
} 

@Override 
protected Object nullSafeGetInternal(ResultSet rs, String[] names, Object owner, LobHandler lobHandler) 
throws SQLException, HibernateException { 
    return lobHandler.getBlobAsBinaryStream(rs, names[0]); 
} 

@Override 
protected void nullSafeSetInternal(PreparedStatement ps, int index, Object value, LobCreator lobCreator) 
throws SQLException, HibernateException { 
    if (value != null) { 
     lobCreator.setBlobAsBinaryStream(ps, index, (InputStream) value, -1); 
    } else { 
     lobCreator.setBlobAsBytes(ps, index, null); 
    } 
} 
} 

由於AbstractLobType是在hibernate3，我不應該使用它了，但什麼是另類？

我在春天的項目上看過this JIRA issue，但它根本沒有幫助我。

這是Hibernate映射：

<class name="SoundNotification" table="SoundNotification" entity-name="SoundNotificationWithData"> 
    <id name="m_id" type="int" column="id" unsaved-value="-1"> 
     <generator class="native"/> 
    </id> 
    <property name="m_name" column="name" unique="true" not-null="true"/> 
    <property name="m_data" column="data" 
       type="com.mycompany.server.common.service.persistence.impl.hibernate.usertype.BlobUserType" 
       not-null="true"/> 
    <property name="m_size" formula="OCTET_LENGTH(data)"/> 
    <property name="m_inUse" 
       formula="(select count(1) from EventTypeConfiguration etc where etc.soundNotification=id)"/> 
</class> 

和Java類：

public class SoundNotification extends IntegerEntity 
{ 
    private String m_name; 
    private transient InputStream m_data; 
    private boolean m_inUse; 
    private long m_size; 

    // getters and setters ... 
} 

更新與MaterializedBlobType：

我TrafficMap.hbm.xml：

<class name="TrafficMapImage" table="TrafficMapImage" entity-name="TrafficMapImageWithData"> 
    <id name="m_id" column="id" type="int" unsaved-value="-1"> 
     <generator class="native"/> 
    </id> 

    <property name="m_created" column="created" type="org.jadira.usertype.dateandtime.joda.PersistentDateTime" 
       not-null="true"/> 
    <property name="m_image" column="image" 
       type="org.hibernate.type.MaterializedBlobType" 
       not-null="true"/> 
    <property name="m_type" column="type" not-null="true"> 
     <type name="com.traficon.tmsng.server.common.service.persistence.impl.hibernate.usertype.EnumUserType"> 
      <param name="enumClass">com.traficon.domain.map.TrafficMapImageType</param> 
     </type> 
    </property> 
</class> 

這個s essionFactory豆在我的Spring上下文：

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> 
    <property name="dataSource" ref="dataSource"/> 
    <property name="hibernateProperties"> 
     <value> 
      hibernate.dialect=${hibernate.dialect} 
      hibernate.hbm2ddl.auto=${hibernate.hbm2ddl.auto} 
      hibernate.show_sql=${hibernate.show_sql} 
      hibernate.jdbc.batch_size=50 
      hibernate.jdbc.use_streams_for_binary=true 
      hibernate.current_session_context_class=com.traficon.tmsng.server.common.spring.TransactionAwareSessionContext 
     </value> 
    </property> 
    <property name="mappingResources"> 
     <list> 
      <value>hibernate/authentication.hbm.xml</value> 
      <value>hibernate/SystemPrefs.hbm.xml</value> 
      <value>hibernate/Detector.hbm.xml</value> 
      <value>hibernate/filters.hbm.xml</value> 
      <value>hibernate/EventTypeConfiguration.hbm.xml</value> 
      <value>hibernate/Scenario.hbm.xml</value> 
      <value>hibernate/RunningScenario.hbm.xml</value> 
      <value>hibernate/StorePoint.hbm.xml</value> 
      <value>hibernate/OfflineNetwork.hbm.xml</value> 
      <value>hibernate/Characteristics.hbm.xml</value> 
      <value>hibernate/EventType.hbm.xml</value> 
      <value>hibernate/EventStore.hbm.xml</value> 
      <value>hibernate/IntervalDataMessage.hbm.xml</value> 
      <value>hibernate/IntegrationPeriodConstraints.hbm.xml</value> 
      <value>hibernate/Media.hbm.xml</value> 
      <value>hibernate/TrafficMap.hbm.xml</value> 
      <value>hibernate/CommentLibrary.hbm.xml</value> 
      <value>hibernate/CommentHistory.hbm.xml</value> 
      <value>hibernate/Dashboard.hbm.xml</value> 
     </list> 
    </property> 
    <property name="entityInterceptor"> 
     <bean class="com.traficon.tmsng.server.common.service.persistence.impl.hibernate.RollbackReintializerInterceptor" 
       scope="prototype"/> 
    </property> 
</bean> 

的日誌輸出：

[WARNING] [talledLocalContainer] INFO: Initializing Spring root WebApplicationContext 
[INFO] [talledLocalContainer] 13 Dec 2013 13:54:10,525 [main] INFO hibernate.annotations.common.Version - HCANN000001: Hibernate Commons Annotations {4.0.2.Final} 
[INFO] [talledLocalContainer] 13 Dec 2013 13:54:10,537 [main] INFO org.hibernate.Version - HHH000412: Hibernate Core {4.2.7.Final} 
[INFO] [talledLocalContainer] 13 Dec 2013 13:54:10,544 [main] INFO org.hibernate.cfg.Environment - HHH000205: Loaded properties from resource hibernate.properties: {hibernate.jdbc.use_streams_for_binary=true, hibernate.bytecode.use_reflection_optimizer=false} 
[INFO] [talledLocalContainer] 13 Dec 2013 13:54:10,545 [main] INFO org.hibernate.cfg.Environment - HHH000407: Using java.io streams to persist binary types 
[INFO] [talledLocalContainer] 13 Dec 2013 13:54:10,546 [main] INFO org.hibernate.cfg.Environment - HHH000021: Bytecode provider name : javassist 
[INFO] [talledLocalContainer] 13 Dec 2013 13:54:12,302 [main] INFO org.hibernate.dialect.Dialect - HHH000400: Using dialect: org.hibernate.dialect.MySQL5InnoDBDialect 

....

[INFO] [talledLocalContainer] 13 Dec 2013 14:06:12,136 [http-8080-4] INFO hibernate.event.internal.DefaultLoadEventListener - HHH000327: Error performing load command : org.hibernate.PropertyAccessException: could not set a field value by reflection setter of com.traficon.domain.map.TrafficMapImage.m_image 
[WARNING] [talledLocalContainer] Dec 13, 2013 2:06:12 PM org.apache.catalina.core.StandardWrapperValve invoke 
[WARNING] [talledLocalContainer] SEVERE: Servlet.service() for servlet mediaServlet threw exception 
[WARNING] [talledLocalContainer] java.lang.IllegalArgumentException: Can not set java.io.InputStream field com.traficon.domain.map.TrafficMapImage.m_image to [B 
[WARNING] [talledLocalContainer] at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:164) 
[WARNING] [talledLocalContainer] at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:168) 
[WARNING] [talledLocalContainer] at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81) 
[WARNING] [talledLocalContainer] at java.lang.reflect.Field.set(Field.java:741) 
[WARNING] [talledLocalContainer] at org.hibernate.property.DirectPropertyAccessor$DirectSetter.set(DirectPropertyAccessor.java:139) 
[WARNING] [talledLocalContainer] at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:710) 
[WARNING] [talledLocalContainer] at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:379) 
[WARNING] [talledLocalContainer] at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:4523) 
[WARNING] [talledLocalContainer] at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:186) 
[WARNING] [talledLocalContainer] at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:137) 
[WARNING] [talledLocalContainer] at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1108) 
[WARNING] [talledLocalContainer] at org.hibernate.loader.Loader.processResultSet(Loader.java:964) 
[WARNING] [talledLocalContainer] at org.hibernate.loader.Loader.doQuery(Loader.java:911) 
[WARNING] [talledLocalContainer] at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:342) 
[WARNING] [talledLocalContainer] at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:312) 
[WARNING] [talledLocalContainer] at org.hibernate.loader.Loader.loadEntity(Loader.java:2121) 
[WARNING] [talledLocalContainer] at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:82) 
[WARNING] [talledLocalContainer] at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:72) 
[WARNING] [talledLocalContainer] at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3941) 
[WARNING] [talledLocalContainer] at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:460) 
[WARNING] [talledLocalContainer] at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:429) 
[WARNING] [talledLocalContainer] at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:206) 
[WARNING] [talledLocalContainer] at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:246) 
[WARNING] [talledLocalContainer] at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:150) 
[WARNING] [talledLocalContainer] at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1098) 
[WARNING] [talledLocalContainer] at org.hibernate.internal.SessionImpl.access$2000(SessionImpl.java:175) 
[WARNING] [talledLocalContainer] at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.load(SessionImpl.java:2482) 
[WARNING] [talledLocalContainer] at org.hibernate.internal.SessionImpl.get(SessionImpl.java:998) 
[WARNING] [talledLocalContainer] at com.traficon.tmsng.server.common.service.persistence.impl.hibernate.HibernateTrafficMapRepository.getTrafficMapImageWithData_aroundBody6(HibernateTrafficMapRepository.java:176) 
[WARNING] [talledLocalContainer] at com.traficon.tmsng.server.common.service.persistence.impl.hibernate.HibernateTrafficMapRepository$AjcClosure7.run(HibernateTrafficMapRepository.java:1) 
[WARNING] [talledLocalContainer] at org.springframework.transaction.aspectj.AbstractTransactionAspect.ajc$around$org_springframework_transaction_aspectj_AbstractTransactionAspect$1$2a73e96cproceed(AbstractTransactionAspect.aj:59) 
[WARNING] [talledLocalContainer] at org.springframework.transaction.aspectj.AbstractTransactionAspect$AbstractTransactionAspect$1.proceedWithInvocation(AbstractTransactionAspect.aj:65) 
[WARNING] [talledLocalContainer] at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260) 
[WARNING] [talledLocalContainer] at org.springframework.transaction.aspectj.AbstractTransactionAspect.ajc$around$org_springframework_transaction_aspectj_AbstractTransactionAspect$1$2a73e96c(AbstractTransactionAspect.aj:63) 
[WARNING] [talledLocalContainer] at com.traficon.tmsng.server.common.service.persistence.impl.hibernate.HibernateTrafficMapRepository.getTrafficMapImageWithData(HibernateTrafficMapRepository.java:173) 
[WARNING] [talledLocalContainer] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
[WARNING] [talledLocalContainer] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
[WARNING] [talledLocalContainer] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
[WARNING] [talledLocalContainer] at java.lang.reflect.Method.invoke(Method.java:606) 
[WARNING] [talledLocalContainer] at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) 
[WARNING] [talledLocalContainer] at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) 
[WARNING] [talledLocalContainer] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) 
[WARNING] [talledLocalContainer] at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:155) 
[WARNING] [talledLocalContainer] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) 
[WARNING] [talledLocalContainer] at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91) 
[WARNING] [talledLocalContainer] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) 
[WARNING] [talledLocalContainer] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 
[WARNING] [talledLocalContainer] at com.sun.proxy.$Proxy39.getTrafficMapImageWithData(Unknown Source) 
[WARNING] [talledLocalContainer] at com.traficon.tmsng.server.web.mvc.DownloadTrafficMapImageController.onSubmit(DownloadTrafficMapImageController.java:40) 
[WARNING] [talledLocalContainer] at org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:272) 
[WARNING] [talledLocalContainer] at org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:268) 
[WARNING] [talledLocalContainer] at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153) 
[WARNING] [talledLocalContainer] at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48) 
[WARNING] [talledLocalContainer] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) 
[WARNING] [talledLocalContainer] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) 
[WARNING] [talledLocalContainer] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936) 
[WARNING] [talledLocalContainer] at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827) 
[WARNING] [talledLocalContainer] at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 
[WARNING] [talledLocalContainer] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812) 
[WARNING] [talledLocalContainer] at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 
[WARNING] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 
[WARNING] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
[WARNING] [talledLocalContainer] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 
[WARNING] [talledLocalContainer] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
[WARNING] [talledLocalContainer] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) 
[WARNING] [talledLocalContainer] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
[WARNING] [talledLocalContainer] at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568) 
[WARNING] [talledLocalContainer] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
[WARNING] [talledLocalContainer] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) 
[WARNING] [talledLocalContainer] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) 
[WARNING] [talledLocalContainer] at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) 
[WARNING] [talledLocalContainer] at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) 
[WARNING] [talledLocalContainer] at java.lang.Thread.run(Thread.java:744) 
[WARNING] [talledLocalContainer] 

Answer 1

從理論上講，如果你想使用你應該使用休眠提供MaterializedBlobTypeInputStream s爲你的Blob然後添加以下屬性給你休眠配置

hibernate.jdbc.use_streams_for_binary=true 

這將指示MaterializedBlobType使用InputStream而不是byte[]。

Answer 2

我結束了創建我自己的用戶類型是Blob和的InputStream之間轉換：

import org.hibernate.HibernateException; 
import org.hibernate.engine.spi.SessionImplementor; 
import org.hibernate.usertype.UserType; 

import java.io.InputStream; 
import java.io.Serializable; 
import java.sql.PreparedStatement; 
import java.sql.ResultSet; 
import java.sql.SQLException; 
import java.sql.Types; 

public class BlobUserType implements UserType 
{ 
// ------------------------ INTERFACE METHODS ------------------------ 

// --------------------- Interface UserType --------------------- 

    @Override 
    public int[] sqlTypes() 
    { 
     return new int[]{Types.BLOB}; 
    } 

    @Override 
    public Class returnedClass() 
    { 
     return InputStream.class; 
    } 

    @Override 
    public boolean equals(Object x, Object y) throws HibernateException 
    { 
     boolean result; 
     if (x == y) 
     { 
      result = true; 
     } 
     else if (x == null || y == null) 
     { 
      result = false; 
     } 
     else 
     { 
      result = x.equals(y); 
     } 
     return result; 
    } 

    @Override 
    public int hashCode(Object x) throws HibernateException 
    { 
     return x.hashCode(); 
    } 

    @Override 
    public Object nullSafeGet(ResultSet rs, String[] names, SessionImplementor session, Object owner) throws HibernateException, SQLException 
    { 
     return rs.getBlob(names[0]).getBinaryStream(); 
    } 

    @Override 
    public void nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session) throws HibernateException, SQLException 
    { 
     if(value != null) 
     { 
      InputStream inputStream = (InputStream)value; 
      st.setBlob(index, inputStream); 
     } 
     else 
     { 
      st.setNull(index, Types.BLOB); 
     } 
    } 

    @Override 
    public Object deepCopy(Object value) throws HibernateException 
    { 
     return value; 
    } 

    @Override 
    public boolean isMutable() 
    { 
     return false; 
    } 

    @Override 
    public Serializable disassemble(Object value) throws HibernateException 
    { 
     return null; 
    } 

    @Override 
    public Object assemble(Serializable cached, Object owner) throws HibernateException 
    { 
     return null; 
    } 

    @Override 
    public Object replace(Object original, Object target, Object owner) throws HibernateException 
    { 
     return original; 
    } 
} 

似乎工作正常裝載和從/到數據庫中保存我的實體。

Answer 3

如您所說，您不應該使用AbstractLobType，因爲它在休眠3中。

您可以創建自己的UserType以在Blob和InputStream之間進行轉換。但是，如果你是從休眠3遷移現有數據，以4，你的代碼將無法正常工作：

BlobSerializableType的格式除了具有標頭的信息是這樣的：

¬í牛逼{「userServices」 ：[{ 「accountStatus」： 「PendingTermsAndConditions」， 「serviceIdentifier」： 「SNG」}] ...}]}

您的代碼將工作（讀，寫）的格式沒有標題： { 「userServices」 ：[{ 「accountStatus」： 「PendingTermsAndConditions」， 「serviceIdentifier」： 「SNG」}] ...}]}

我個人的解決辦法就是模擬Hibernate 3的寫入和讀取BLOB數據如下：

package com.newbay.acs.domain.hibernate; 

import org.apache.commons.io.IOUtils; 
import org.hibernate.HibernateException; 
import org.hibernate.engine.spi.SessionImplementor; 
import org.hibernate.usertype.UserType; 

import java.io.*; 
import java.nio.charset.StandardCharsets; 
import java.sql.PreparedStatement; 
import java.sql.ResultSet; 
import java.sql.SQLException; 
import java.sql.Types; 

/** 
* Created by qale0001 on 21/06/2016. 
*/ 
public class CustomMaterializedBlobType implements UserType 
{ 
    private static final int OUTPUT_BYTE_ARRAY_INITIAL_SIZE = 1024; 

    @Override 
    public int[] sqlTypes() 
    { 
     return new int[]{Types.BLOB}; 
    } 

    @Override 
    public Class returnedClass() 
    { 
     return String.class; 
    } 

    @Override 
    public boolean equals(Object x, Object y) throws HibernateException { 
     boolean result; 
     if (x == y) 
     { 
      result = true; 
     } 
     else if (x == null || y == null) 
     { 
      result = false; 
     } 
     else 
     { 
      result = x.equals(y); 
     } 
     return result; 
    } 

    @Override 
    public int hashCode(Object x) throws HibernateException { 
     return x.hashCode(); 
    } 

    @Override 
    public Object nullSafeGet(ResultSet rs, String[] names, SessionImplementor session, Object owner) 
      throws HibernateException, SQLException { 
     java.sql.Blob blob = rs.getBlob(names[0]); 
     InputStream is = blob.getBinaryStream(); 

     if (is != null) { 
      try { 
       ObjectInputStream ois = new ObjectInputStream(is); 
       try { 
        return ois.readObject(); 
       } catch (ClassNotFoundException ex) { 
        throw new HibernateException("Could not deserialize BLOB contents", ex); 
       } finally { 
        ois.close(); 
       } 
      } catch (IOException ex) { 
       throw new HibernateException("Could not deserialize BLOB contents", ex); 
      } 
     } 
     else { 
      return null; 
     } 
    } 

    @Override 
    public void nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session) throws HibernateException, SQLException { 
     if(value != null) 
     { 
      ByteArrayOutputStream baos = new ByteArrayOutputStream(OUTPUT_BYTE_ARRAY_INITIAL_SIZE); 
      try { 
       ObjectOutputStream oos = new ObjectOutputStream(baos); 
       try { 
        oos.writeObject(value); 
        oos.flush(); 
        InputStream is = new ByteArrayInputStream(baos.toByteArray()); 
        st.setBlob(index, is); 
       } 
       finally { 
        oos.close(); 
       } 
      } catch (IOException ex) { 
       throw new HibernateException("Could not serialize BLOB contents", ex); 
      } 
     } 
     else 
     { 
      st.setNull(index, Types.BLOB); 
     } 
    } 

    @Override 
    public Object deepCopy(Object value) throws HibernateException { 
     return value; 
    } 

    @Override 
    public boolean isMutable() { 
     return false; 
    } 

    @Override 
    public Serializable disassemble(Object value) throws HibernateException { 
     return null; 
    } 

    @Override 
    public Object assemble(Serializable cached, Object owner) throws HibernateException { 
     return null; 
    } 

    @Override 
    public Object replace(Object original, Object target, Object owner) throws HibernateException { 
     return original; 
    } 

}