SolrJ POJO Annotations

Question

This question is related to SolrJ document as a bean. I have an entity that has another entity within it. Could you please tell me how to annotate for inner entities? The issue I am facing is the inner entities fields are missing while indexing. In the below example, It is just adding Content fields and missing out author name and id.

Example: "Content" is one class that has "Author" as its has-a relationship entity.

class Content{ 

@Field("uniqueId") 
String id; 

@Field("timeStamp") 
Long timeStamp; 

//What should be the annotation type for this entity? 
Author author; 
} 

class Author{ 
@Field("authorName") 
String authorName; 

@Field("authorId") 
String id; 

} 

My schema xml is:

<field name="uniqueId" type="string" /> 
<field name="timeStamp" type="long" /> 
<field name="authorName" type="string" /> 
<field name="authorId" type="string" /> 

Answer 1

According to SOLR-1945 this is possible since Solr 5.1, by using the child property on the @Field annotation, as you can see in the Java docs.

In your case it would be:

class Content { 
    @Field("uniqueId") 
    String id; 

    @Field("timeStamp") 
    Long timeStamp; 

    @Field(child = true) // You should use this annotation
    Author author; 
}



class Author { 
    @Field("authorName") 
    String authorName; 

    @Field("authorId") 
    String id; 
}