hibernate-search MassIndexer錯誤

我想重新索引elasticsearch索引中的實體，使用來自hibernate-search-orm項目的MassIndexer系統重新索引實體。hibernate-search MassIndexer錯誤

這可能很棒;）但它告訴我一些例外。

但是你可以看到下面的例子是基本的：

實體：

@Entity 
@Table(name = "STUDENT") 
@Indexed 
@ProvidedId (bridge = @FieldBridge(impl = StudentFieldBridge.class)) 
public class StudentEntity { 

    @EmbeddedId 
    private RegistrationId regid; 

    @Field 
    private String name; 
    ... 
}

的registrationId：

@Embeddable 
public class RegistrationId implements Serializable{ 

    @Column(name = "STUDENT_ID") 
    private int studentId; 

    @Column(name = "DEPARTMENT") 
    private String department; 
    ... 
}

學生場橋：

public class StudentFieldBridge implements TwoWayStringBridge { 

    @Override 
    public Object stringToObject(String stringValue) { 
     String[] split = stringValue.split("_"); 
     RegistrationId ret = new RegistrationId(); 
     ret.setDepartment(split[0]); 
     ret.setStudentId(Integer.parseInt(split[1])); 
     return ret; 
    } 

    @Override 
    public String objectToString(Object object) { 
     RegistrationId id = (RegistrationId) object; 
     return id.getDepartment() + "_" + id.getStudentId(); 
    } 
}

質量指數

@Test 
public void massIndexation() throws InterruptedException { 
    EntityManager em = Persistence.createEntityManagerFactory("studentPu").createEntityManager(); 
    org.hibernate.Session hibernateSession = (Session)em.getDelegate(); 
    FullTextSession fullTextSession = Search.getFullTextSession(hibernateSession); 
    fullTextSession.createIndexer().startAndWait(); 
}

最後的錯誤：

ERROR: HSEARCH000058: HSEARCH000212: An exception occurred while the MassIndexer was transforming identifiers to Lucene Documents 
java.lang.NullPointerException 
at org.hibernate.loader.criteria.CriteriaQueryTranslator.getEntityName(CriteriaQueryTranslator.java:626) 
at org.hibernate.loader.criteria.CriteriaQueryTranslator.getColumns(CriteriaQueryTranslator.java:509) 
at org.hibernate.loader.criteria.CriteriaQueryTranslator.findColumns(CriteriaQueryTranslator.java:525) 
at org.hibernate.criterion.InExpression.toSqlString(InExpression.java:43) 
at org.hibernate.loader.criteria.CriteriaQueryTranslator.getWhereCondition(CriteriaQueryTranslator.java:400) 
at org.hibernate.loader.criteria.CriteriaJoinWalker.<init>(CriteriaJoinWalker.java:106) 
at org.hibernate.loader.criteria.CriteriaJoinWalker.<init>(CriteriaJoinWalker.java:75) 
at org.hibernate.loader.criteria.CriteriaLoader.<init>(CriteriaLoader.java:80) 
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1760) 
at org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:363) 
at org.hibernate.search.batchindexing.impl.IdentifierConsumerDocumentProducer.loadList(IdentifierConsumerDocumentProducer.java:175) 
at org.hibernate.search.batchindexing.impl.IdentifierConsumerDocumentProducer.loadAllFromQueue(IdentifierConsumerDocumentProducer.java:140) 
at org.hibernate.search.batchindexing.impl.IdentifierConsumerDocumentProducer.run(IdentifierConsumerDocumentProducer.java:117) 
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
at java.lang.Thread.run(Thread.java:744)

Java項目的依賴關係是：

testCompile group: 'org.hibernate', name: 'hibernate-entitymanager', version: '5.0.8.Final' 
testCompile group: 'org.hibernate', name: 'hibernate-search-orm', version: '5.6.0.Alpha3' 
testCompile group: 'org.hibernate', name: 'hibernate-search-backend-elasticsearch', version: '5.6.0.Alpha3'

由於項目團隊爲你的工作！

來源

2016-07-05 robynico

這應該工作：

@Entity 
@Table(name = "STUDENT") 
@Indexed 
public class StudentEntity { 

    @EmbeddedId 
    @DocumentId 
    @FieldBridge(impl = StudentFieldBridge.class) 
    private RegistrationId regid; 

    @Field 
    private String name;

的問題是由@ProvidedId註釋，這是不符合MassIndexer兼容引起的：它是爲其他框架與Hibernate Search的集成，以提供直接被分配的ID外部。如果id是外部分配的，MassIndexer無法猜測它們，所以這些不應該一起使用。

我會盡力澄清關於此問題的ProvidedId的文檔，或者可能會棄用/刪除註釋，因爲我並不認爲它會導致這樣的混淆錯誤。感謝您的報告！

來源

2016-07-05 17:32:55 Sanne

相關問題：https：//hibernate.atlassian.net/browse/HSEARCH-1645 – Sanne

hibernate-search MassIndexer錯誤

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