使用join子句的hql查询不起作用的“ where”限制

Question

First of all clarify that I am quite bad with databases, so please do not be to mean with my code :P

I have a problem with a query on hibernate using join and restrictions. I have a huge list of Assignments and some of them have an Asr object.

queryString.append("select new commons.bo.assignment.AssignmentAssociateExtract("
    + " assignment.id, assignment.contract.assignmentStatus,"
    + " assignment.contract.beginDate, assignment.contract.endDate,"
    + " assignment.contract.contractType, assignment.organizationalData.homeCountryKey,"
    + " assignment.organizationalData.hostCountryKey," 
    + " assignment.organizationalData.homeOrgUnitKey,"
    + " assignment.associate.globalIdAssociate,"
    + " assignment.associate.localIdHome,"
    + " assignment.associate.firstName,"
    + " assignment.associate.lastName)"
    + " from Assignment assignment left join assignment.asr asr"
    + " where assignment.contract.assignmentStatus.code = 5"
    + " and asr.homeAsrElegibility is not 'X'"
    + " or asr.homeAsrElegibility is null"
);

I was creating this query step by step. Before I created it without the join clause left join assignment.asr asr and it was working well but of course it was not showing the Assignments that did not have a Asr object. After I added the join clause, now it shows every single Assignment (10.000 records when those who have an assignmentStatus = 5 are just 4.000) and the restrictions like

where assignment.contract.assignmentStatus.code = 5

are not reflected in the result anymore.

So to sum up: I need a list with all assignments with assignmentStatus = 5 and asr.homeAsrElegibility != 'X'. But it needs to include also all assignments with assignmentStatus = 5 even if they do not have an Asr object.

Any ideas?? Thanks!

Answer 1

Parenthesis helps to clarify the situation.

queryString.append("select new commons.bo.assignment.AssignmentAssociateExtract("
    + " assignment.id, assignment.contract.assignmentStatus,"
    + " assignment.contract.beginDate, assignment.contract.endDate,"
    + " assignment.contract.contractType, assignment.organizationalData.homeCountryKey,"
    + " assignment.organizationalData.hostCountryKey," 
    + " assignment.organizationalData.homeOrgUnitKey,"
    + " assignment.associate.globalIdAssociate,"
    + " assignment.associate.localIdHome,"
    + " assignment.associate.firstName,"
    + " assignment.associate.lastName)"
    + " from Assignment assignment left join assignment.asr asr"
    + " where assignment.contract.assignmentStatus.code = 5"
    + " and ((asr.homeAsrElegibility is not null and asr.homeAsrElegibility is not 'X')"
    + " or (asr.homeAsrElegibility is null))"
);