Informix：当VARCHAR工作时，不能使用CLOB持久保存实体

时间：2015-11-10 14:36:29

标签： hibernate java-ee informix sqldatatypes clob

我有一个String类型的实体。基础数据类型是VARCHAR（255）。如果我将此数据类型更改为CLOB，则在

期间会出现以下异常 
entityManager.persist(entity);

这是stacktrace 

15:31:43,253 INFO  [org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl] (EJB default - 4) HHH000010: On release of batch it still contained JDBC statements
15:31:43,268 WARN  [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (EJB default - 4) SQL Error: -841, SQLState: S0000
15:31:43,268 ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (EJB default - 4) Name must start with a letter or '_' and contain letters, digits, or '_'.
15:31:43,268 ERROR [org.hibernate.engine.jdbc.batch.internal.BatchingBatch] (EJB default - 4) HHH000315: Exception executing batch [could not execute batch]
15:31:43,268 WARN  [com.arjuna.ats.arjuna] (EJB default - 4) ARJUNA012125: TwoPhaseCoordinator.beforeCompletion - failed for SynchronizationImple< 0:ffff968521df:1920e98e:5641ceff:adc0, org.hibernate.engine.transaction.synchronization.internal.RegisteredSynchronization@ac5829a >: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute batch
...
Caused by: org.hibernate.exception.SQLGrammarException: could not execute batch
at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:123)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:124)
at org.hibernate.engine.jdbc.batch.internal.BatchingBatch.performExecution(BatchingBatch.java:122)
at org.hibernate.engine.jdbc.batch.internal.BatchingBatch.doExecuteBatch(BatchingBatch.java:101)
at org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl.execute(AbstractBatchImpl.java:161)
at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.executeBatch(JdbcCoordinatorImpl.java:207)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:390)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:303)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:349)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:56)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1195)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:404)
at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorNonTrackingImpl.beforeCompletion(SynchronizationCallbackCoordinatorNonTrackingImpl.java:109)
... 167 more
Caused by: java.sql.BatchUpdateException: Name must start with a letter or '_' and contain letters, digits, or '_'.
at com.informix.jdbc.IfxPreparedStatement.executeBatch(IfxPreparedStatement.java:3028)
at org.jboss.jca.adapters.jdbc.WrappedStatement.executeBatch(WrappedStatement.java:1077)
at org.hibernate.engine.jdbc.batch.internal.BatchingBatch.performExecution(BatchingBatch.java:113)
... 177 more

我不知道为什么数据类型会对持久阶段产生影响。你对这里发生的事情有什么暗示吗？如果您需要任何代码，请告诉我。我可能提供的代码太多了。

这是实体

@Entity
@Table(name = "cw_test")
public class CwTest implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @Column(name="ID")
    private Integer id;
//  @Column(name = "TEST_COLUMN", columnDefinition="BLOB")
    @Column(name = "TEST_COLUMN")
    private String testColumn;

    public CwTest() {
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public void setTestColumn(String testColumn) {
        this.testColumn = testColumn;
    }

    public String getTestColumn() {
        return testColumn;
    }

}

这是sql-code 

drop table CW_TEST;
create table CW_TEST(ID integer, TEST_COLUMN varchar(255));

drop table CW_TEST;
create table CW_TEST(ID integer, TEST_COLUMN CLOB);

第一部作品，而第二作品没有。

这里输出的是debug-option = true。

11:28:28,797 INFO  [stdout] (http-/0.0.0.0:8080-1) Hibernate: 
11:28:28,797 INFO  [stdout] (http-/0.0.0.0:8080-1)     /* insert de.lbank.frep.model.CwTest
11:28:28,797 INFO  [stdout] (http-/0.0.0.0:8080-1)         */ insert 
11:28:28,797 INFO  [stdout] (http-/0.0.0.0:8080-1)         into
11:28:28,797 INFO  [stdout] (http-/0.0.0.0:8080-1)             cw_test
11:28:28,797 INFO  [stdout] (http-/0.0.0.0:8080-1)             (TEST_COLUMN, ID) 
11:28:28,797 INFO  [stdout] (http-/0.0.0.0:8080-1)         values
11:28:28,797 INFO  [stdout] (http-/0.0.0.0:8080-1)             (?, ?)

11:28:28,829 INFO  [org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl] (http-/0.0.0.0:8080-1) HHH000010: On release of batch it still contained JDBC statements
11:28:28,829 WARN  [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (http-/0.0.0.0:8080-1) SQL Error: -841, SQLState: S0000
11:28:28,829 ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] (http-/0.0.0.0:8080-1) Name must start with a letter or '_' and contain letters, digits, or '_'.
11:28:28,829 ERROR [org.hibernate.engine.jdbc.batch.internal.BatchingBatch] (http-/0.0.0.0:8080-1) HHH000315: Exception executing batch [could not execute batch]
11:28:28,829 WARN  [com.arjuna.ats.arjuna] (http-/0.0.0.0:8080-1) ARJUNA012125: TwoPhaseCoordinator.beforeCompletion - failed for SynchronizationImple< 0:ffff968521df:496f4a99:565d75bf:55, org.hibernate.engine.transaction.synchronization.internal.RegisteredSynchronization@2c18af11 >: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute batch

这是我的persistence.xml：

<persistence-unit name="persistence_unit" transaction-type="JTA">
    <jta-data-source>java:jboss/datasources/INF_APPDS</jta-data-source>

    <properties>
        <property name="hibernate.dialect" value="org.hibernate.dialect.InformixDialect" />

        <property name="hibernate.jdbc.use_streams_for_binary" value="true" />

        <property name="hibernate.show_sql" value="${STAGING.hibernate.show_sql:false}" />
        <property name="hibernate.format_sql" value="true" />
        <property name="hibernate.use_sql_comments" value="true" />
        <property name="hibernate.jdbc.fetch_size" value="20" />
        <property name="hibernate.jdbc.batch_size" value="20" />
        <property name="hibernate.jdbc.batch_versioned_data" value="false" />


        <property name="hibernate.cache.use_query_cache" value="false" />
        <property name="hibernate.cache.use_second_level_cache" value="false" />
        <property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider" />
        <property name="hibernate.order_updates" value="true" />
        <property name="hibernate.generate_statistics" value="true" />
        <property name="hibernate.id.new_generator_mappings" value="true" />
    </properties>
</persistence-unit>

2 个答案:

答案 0 :(得分：0)

如果sql语法异常即将到来，您必须检查您的POJO是否映射到您在数据库中创建的任何表。或者你可以使用

<property name="hbm2ddl.auto" value="create"/>

答案 1 :(得分：0)

我认为您在映射文件中使用默认的informix hibernate方言。根据这篇文章（http://www.snailshell.de/blog/archives/2007/06/entry_108.html）和链接的JIRA票证（https://hibernate.atlassian.net/browse/HHH-2646），默认的informix hibernate方言不支持CLOB或BLOB类型。

您是否确认您使用的方言支持此功能？你试过这里链接的自定义方言吗？

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