Hibernate 3 Not Loading Values Into Child Set In JUnit Test

[Michael Duffy]

I"m trying to use Hibernate 3 with Spring. I've got two classes with a unidirectional parent-child relationship: QuestionnaireResponse and Answer. A QuestionnaireResponse has a child Set of Answers. I've attached the Hibernate mapping below (just to keep the narrative together).

Of course I'm writing JUnit tests. I've got a test where I query for a particular QuestionnaireResponse and check the result I get back. The query is returning the right response for a given individual, but when I check to see if the associated answers are included I find that the Set size is zero instead of the 24 I expected from the database values.

I've set it up so I'm using eager loading. What did I miss with Hibernate? Why is it not getting the assocated Answers in this simple 1:m relationship? Thanks.

QuestionnaireResponse.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
 
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 
<hibernate-mapping
>
    <class
        name="com.hartford.common.model.questionnaire.questionnaires.QuestionnaireResponseImpl"
        table="QUESTIONNAIRE_RESPONSES"
        dynamic-update="true"
    >
        <cache usage="read-write" />
 
        <id
            name="id"
            column="QUESTIONNAIRE_RESPONSE_ID"
            type="java.lang.Long"
            unsaved-value="null"
        >
            <generator class="native"/>
        </id>
 
        <property
            name="respondent"
            type="java.lang.String"
            update="true"
            insert="true"
            column="RESPONDENT_ID"
        />
 
        <many-to-one
            name="questionnaire"
            class="com.hartford.common.model.questionnaire.questionnaires.QuestionnaireImpl"
            cascade="save-update"
            outer-join="auto"
            update="true"
            insert="true"
            column="QUESTIONNAIRE_ID"
            not-null="true"
        />
 
        <property
            name="creationDate"
            type="java.util.Date"
            update="true"
            insert="true"
            column="CREATION_DATE"
        />
 
        <set
            name="answers"
            lazy="false"
            inverse="true"
            cascade="save-update"
            sort="unsorted">
 
            <key column="ANSWER_ID"/>
            <one-to-many class="com.hartford.common.model.questionnaire.answers.AnswerImpl"/>
        </set>
    </class>
 
</hibernate-mapping>

[Chris OConnell]

I'm having the same sort of problem. However, I have a relationship that 'sometimes' load and sometimes doesn't. Anyone else seen this sort of behavior?