CODEWITHSUNDEEP
javajaxb
Randy Avis
Randy Avis

Reputation: 75

JAXB (Grand)child element data not populating

I'm having trouble unmarshaling elements of a (grand)child table. Here's the structure of the incoming data: 

<searchResultDocuments>
    <pageNumber>1</pageNumber>
    <pageSize>1</pageSize>
    <results>
        <contentType>text/html</contentType>
        <fileName>theFile.txt</fileName>
        <mainDoc>
            <dates>
                <date>
                    <match>20170822</match>
                    <startOffset>4324</startOffset>
                </date>
                ...
            </dates>
            <entities>
                <entity>
                    <startOffsets>4324 5634</startOffsets>
                    <entityType>featuretype</entityType>
                <entity>
                ...
            </entities>
        </mainDoc>
    </results>
    ...
</searchResultDocuments>

The java classes to capture the data look like this:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name="searchResultDocuments")
public class SearchReturnData{
    @XmlElement
    private int pageNumber;
    @XmlElement
    private int pageSize;
    @XmlElement(name="results")
    private List<ResultData> resultData;
//(no setters, getters only in all classes, although I tried it both ways)
}// end of SearchResultData

@XmlAccessorType(XmlAccessType.FIELD)
public class ResultData{
    @XmlElement
    private String contentType;
    @XmlElement
    private String fileName;
    @XmlElement(name="mainDoc")
    private MainDoc mainDoc;
} // end of ResultData

@XmlAccessorType(XmlAccessType.FIELD)
public class MainDoc{
    @XmlElement(name="dates")
    private List<DateData>    dates;
    @XmlElement(name="entities")
    private List<EntityData> entities;
}// end of MainDoc

@XmlType(name="date")
public class DateData{
    @XmlElement(name="match")
    private String match;
    @XmlElement(name="startOffset")
    private String startOffset;
}// end of DateData

@XmlType(name="entity")
public class EntityData{
    @XmlElement(name="startOffsets")
    private String startOffsets;
    @XmlElement(name="entityType")
    private String entityType;
}// end of EntityData

When I unmarshal the incoming data into this structure, I get the proper number of rows of DataData and EntityData, but none of the elements have data. I've tried having and not having setters but it makes no difference.

Upvotes: 1

Views: 209

Answers (1)

tima
tima

Reputation: 1513

In your MainDoc class, you need to use an element wrapper on your lists.

@XmlElementWrapper(name="dates")
@XmlElement(name="date")
public List<DateData> dates;

@XmlElementWrapper(name="entities")
@XmlElement(name="entity")
public List<EntityData> entities;

Also, your XML doesn't close the <entity> item, it should have one of <entity> and one of </entity> instead of two of <entity>.

Upvotes: 1

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