IndexingDependency mixing String and Integer field

Hibernate Search
1

Hello.
Could not find out why this code does not work in Hibernate Search 6

@Indexed
@Entity
@Table(name = "asset2")
class Asset2 {

    @Id
    @Column(name = "id", length = 50)
    String id;

    @FullTextField
    @Column(length = 500)
    String name;

    @GenericField
    @Column(columnDefinition = "INT DEFAULT 0")
    Integer nameIndex;

    @Transient
    @FullTextField
    @IndexingDependency(
        derivedFrom = @ObjectPath({
                @PropertyValue(propertyName = "name"),
                @PropertyValue(propertyName = "nameIndex")
        })
    )
    String getFullName() {
        return name = this.name + " " + getNameIndex();
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getNameIndex() {
        return nameIndex;
    }
}

I’m getting

Hibernate ORM mapping: 
        type 'com.agronomeye.core.domain.assets.Asset2': 
            path '.fullName<no value extractors>': 
                failures: 
                  - HSEARCH700078: No readable property named 'nameIndex' on type 'java.lang.String'

I found few examples here. But they were too complicated with another Bean. In my case I’m assuming that DefaultIntegerBridge will be applied for Integer field.

I also tried:

@Column(columnDefinition = "INT DEFAULT 0")
Integer nameIndex;

@GenericField
public String getNameIndex() {
    return nameIndex.toString();
}

but still no success, the same error.
Thanks.

2

I figured out, this is a correct annotation

@Transient
@FullTextField
@IndexingDependency(
    derivedFrom = {
            @ObjectPath({@PropertyValue(propertyName = "name")}),
            @ObjectPath({@PropertyValue(propertyName = "nameIndex")}),
    }
)
public String getFullName() {
    return name = this.name + nameIndex;
}