Query Builder createQuery code is not working in local Showing java.lang.NullPointerException? | Community
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K
keshav_goud
Level 3
September 17, 2021
Solved

Query Builder createQuery code is not working in local Showing java.lang.NullPointerException?

  • September 17, 2021
  • 3 replies
  • 3898 views

java.lang.NullPointerException------------------------

Query Builder createQuery code is not working in local When Im using query debugger for Testing of same predicated group objects it showing result but not with JAVA

 

Query query = queryBuilder.createQuery(PredicateGroup.create(searchMap), session);

 

This line not executing when im running the code.

 

 

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Best answer by Vijayalakshmi_S

Hi @vijayalakshmi_s ,

                  Its in Satisfied Status and active also ,any other solutions please suggest me.


Hi @keshav_goud,

With Service Implementation (of QueryBuilder) bound, it shouldn't be null. Try restarting the QueryBuilderImpl OSGi component and/or its bundle - com.day.cq.cq-search.

 

Can you try to change the way we reference the QueryBuilder. If you are annotating it to an instance variable, try it with method or vice versa (With impl class bound per the screenshot you have shared, this shouldn't really make a difference. Just a try though)

 

Field/Instance variable annotation:

@Reference
private QueryBuilder queryBuilder;

Method annotation:

private QueryBuilder queryBuilder;
    
@Reference
protected void bindQueryBuilder(QueryBuilder queryBuilder){
        this.queryBuilder = queryBuilder;
}

Can you share the complete servlet code if possible

3 replies

Asutosh_Jena_
Community Advisor
Asutosh_Jena_Community Advisor
Community Advisor
September 17, 2021

Hi @keshav_goud 

 

Can you please put your code here? Which line is throwing the error? I hope you are using system user to get the session.

 

Thanks!

    K
    keshav_goudAuthor
    Level 3
    September 17, 2021

    Hi @asutosh_jena_ ,

     

    Query query = queryBuilder.createQuery(PredicateGroup.create(searchMap), session);

     

    this line giving null in try catch mode and session is from request.getResourceResolver(); it is a servlet im using

      Asutosh_Jena_
      Community Advisor
      Asutosh_Jena_Community Advisor
      Community Advisor
      September 17, 2021

      Hi @keshav_goud 

       

      Please use the below query.

      Map<String, String> predicatesMap = new HashMap<>();
      //Generate the query here. Adding a sample below for now.
      predicatesMap.put(PREDICATE_FULLTEXT, Text.unescape(keyWord));
      predicatesMap.put(PREDICATE_TYPE, NameConstants.NT_PAGE);
      predicatesMap.put(PREDICATE_PATH, searchRootPath);
      predicatesMap.put(PREDICATE_PROPERTY_OPERATION, PROPERTY_OPERATION_EXISTS);
      predicatesMap.put(PREDICATE_PROPERTY_VALUE, String.valueOf(Boolean.FALSE));
      predicatesMap.put(PREDICATE_LIMIT, "-1");

      final PredicateGroup predicates = PredicateConverter.createPredicates(predicatesMap);
      final Query query = queryBuilder.createQuery(predicates, resourceResolver.adaptTo(Session.class));
      query.setExcerpt(Boolean.TRUE);
      final SearchResult result = query.getResult();

       Hope this helps!

       

      Thanks!

        Kiran_Vedantam
        Community Advisor
        Kiran_VedantamCommunity Advisor
        Community Advisor
        September 17, 2021

        Hi @keshav_goud,

         

        1. First try to run the query in http://localhost:4502/libs/cq/search/content/querydebug.html
          1. If this is returning the results, then you can expect the issue in the code
        2. Secoundly, check how the session is being created [the resourceresolver]
          1. the user should have the proper access to get the results on the content path 
        3. Further to debug, go to error.log and check the error that the java code is throwing. it would specifically say which line of code is throwing the null pointer 
        4. You can also debug the code using your IDE and check where the issue is.

        Hope this helps.

         

        Thanks,

        Kiran Vedantam.

         

          K
          keshav_goudAuthor
          Level 3
          September 17, 2021

          HI @kiran_vedantam ,

           

                    1. Query debugger results showing.

                    2. Currently im implementing in Servlet .Session Im getting from Resolver and it is from request                    not with the user mapping.

                    3. In JAVA code while im trying to print the class of query builder its showing NULL in logs

                         queryBuilder.createQuery(PredicateGroup.create(searchMap), session) throwing null.

           

           

          Thanks,

          Keshav

           

           

           

                    

            Vijayalakshmi_S
            Vijayalakshmi_S
            Level 10
            September 17, 2021

            Hi @keshav_goud,

            Can you cross check your servlet class in OSGi components console(http://localhost:4502/system/console/components) if it is active and if queryBuilder reference is satisfied/Bound to respective Service implementation.

            If it is not, cross check

            • the import statements of @Reference(org.osgi.service.component.annotations.Reference) and QueryBuilder(com.day.cq.search.QueryBuilder) from code standpoint. 
            • If the respective service implementation is active from instance standpoint.
              H
              Adobe Employee
              himanshuAdobe Employee
              Adobe Employee
              September 20, 2021

              Remove the '/' at the end of the property name.

               

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