How to map List of nested objects in Spring data elasticsearch

Question

How to map Nested objects in Spring data elasticsearch

I have object 1 having list of object 2. How to efficiently map this so that querying back elasticsearch is easy ? I want to retrieve object 2 based on ID.

@Document(indexName = xxx, type = xxx)
public class Object1 {
    private List<Obj2> lstObj2;
} 

public class Obj2 {

    private Long id;
}

gawi · Accepted Answer · 2020-12-10 12:03:31Z

2

Use nested Object like this:

@Document(indexName = xxx, type = xxx)
public class Object1 {

  @Field(type = FieldType.Nested)
  private List<Obj2> lstObj2;
} 

public class Obj2 {
  private Long id;
}

As per your requirement it seems that you can use inner Object as well. Use inner object like this.

@Field(type = FieldType.Object)
private List<Obj2> lstObj2;

edited Dec 10, 2020 at 12:03

gawi

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answered Feb 9, 2016 at 14:43

Richa

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3 Comments

user2526641 Over a year ago

Without marking it as object I could query these values. What is special about Nested or Inner Object compared to normal mapping

Richa Over a year ago

This is same as Mapping which you provide while creating an index using ES.

Catalina Over a year ago

@Richa why am i getting reason=failed to parse field

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