Hibernate搜索 - 如何默認列出所有記錄

Question

下面的問題表明*作爲搜索字符串應該工作並返回所有記錄。 它是有道理的，但無效。

Hibernate Search - How to list all records by default

我嘗試下面的代碼：

@Test 
@SuppressWarnings("unchecked") 
public void searchCountry() { 

    String searchTerms = "*"; 
    FullTextSession fullTextSession = org.hibernate.search.Search 
      .getFullTextSession(sessionFactory.getCurrentSession()); 
    String[] fieldsToMatch = new String[] { "code" }; 

    QueryParser parser = new MultiFieldQueryParser(Version.LUCENE_36, 
      fieldsToMatch, new StandardAnalyzer(Version.LUCENE_36)); 
    try { 
     org.apache.lucene.search.Query luceneQuery = parser 
       .parse(searchTerms); 
     FullTextQuery jpaQuery = fullTextSession.createFullTextQuery(
       luceneQuery, Country.class); 
     jpaQuery.setFirstResult(0); 

     jpaQuery.setMaxResults(10); 
     Date startDate = new Date(); 
     System.out.println("Before HQL =" + startDate); 
     List<Country> tempCountry = jpaQuery.list(); 
     Date endDate = new Date(); 
     System.out.println("after HQL =" + endDate); 
     System.out.println("DIFF =" 
       + (endDate.getTime() - startDate.getTime())); 
     System.out.println(tempCountry.size()); 
     System.out.println(tempCountry); 
    } catch (ParseException e) { 
     System.out.println("Error parsing lucene query: " + searchTerms); 

     System.out.println(); 
     e.printStackTrace(); 
     System.out.println(); 
    } 
} 

這是我得到的錯誤：

org.apache.lucene.queryParser.ParseException: Cannot parse '*': '*' or '?' not allowed as first character in WildcardQuery 
Error parsing lucene query: * 

at org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:211) 
at com.zycus.imaster.lucene.test.MDTTest.searchCountry(MDTTest.java:123) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
at java.lang.reflect.Method.invoke(Method.java:597) 
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) 
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) 
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) 
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74) 
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83) 
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72) 
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:232) 
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89) 
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) 
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) 
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) 
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) 
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) 
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) 
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) 
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71) 
at org.junit.runners.ParentRunner.run(ParentRunner.java:309) 
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:175) 
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) 
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) 
Caused by: org.apache.lucene.queryParser.ParseException: '*' or '?' not allowed as first character in WildcardQuery 
at org.apache.lucene.queryParser.QueryParser.getWildcardQuery(QueryParser.java:990) 
at org.apache.lucene.queryParser.MultiFieldQueryParser.getWildcardQuery(MultiFieldQueryParser.java:201) 
at org.apache.lucene.queryParser.MultiFieldQueryParser.getWildcardQuery(MultiFieldQueryParser.java:196) 
at org.apache.lucene.queryParser.QueryParser.Term(QueryParser.java:1421) 
at org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java:1319) 
at org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:1245) 
at org.apache.lucene.queryParser.QueryParser.TopLevelQuery(QueryParser.java:1234) 
at org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:206) 
... 30 more 

Answer 1

AllContext org.hibernate.search.query.dsl.QueryBuilder.all （）

查詢與所有文檔匹配（通常與bool ean查詢）。

剛剛找到了我的問題的方法。以下是任何人想知道同一個問題的示例代碼。

@Test 
public void testSearchUsingQueryBuilder() { 
    FullTextSession fullTextSession = org.hibernate.search.Search 
      .getFullTextSession(sessionFactory.getCurrentSession()); 
    QueryBuilder builder = fullTextSession.getSearchFactory() 
      .buildQueryBuilder().forEntity(Country.class).get(); 
    org.apache.lucene.search.Query query = builder.all().createQuery(); 
    FullTextQuery jpaQuery = fullTextSession.createFullTextQuery(query, 
      Country.class); 
    System.out.println("Before HQL =" + startDate); 
    List<Country> tempCountry = jpaQuery.list(); 
}