仅返回存储库中的扩展文档

如何解决仅返回存储库中的扩展文档

我想问一下如何仅从存储库中返回扩展文档。我有InheritanceType table_per_entity，当我调用存储库方法findAll（）时，我只想返回扩展对象。在此示例中，我具有CustomPropertyDefinition类，并且CustomPropery扩展了CustomPropertyDefinition。

当我有CustomPropertyDefinitionRepository存储库时，我想通过repo.findAll（）;仅返回CustomPropertyDefinitions。

@Entity
@Table(name = "custom_property_definitions")
@JsonIgnoreProperties({ "hibernateLazyInitializer","definitionsUsedIn" })
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
public class CustomPropertyDefinition {

    @Id
    @GeneratedValue(generator = "uuid")
    @GenericGenerator(name = "uuid",strategy = "uuid2")
    @Column(name = "id",length = 40)
    private String id;

    @Column(name = "property_type",nullable = false,length = 10)
    private String propertyType;

    @Column(name = "symbolic_name",unique = true,nullable = false)
    private String symbolicName;

    @Column(name = "lower_bound")
    private String lowerBound;

    @Column(name = "upper_bound")
    private String upperBound;

    @ElementCollection
    @CollectionTable(name = "custom_property_definition_allowed_values",joinColumns = @JoinColumn(name = "id"))
    @Cascade(CascadeType.ALL)
    @Column(name = "allowedValue")
    @OrderBy("allowedValue ASC")
    private Set<String> allowedValues;

    @Transient
    private Set<String> allowedValuesToAdd = new HashSet<String>();

    @ManyToMany(mappedBy = "customPropertyDefinitions")
    private Set<DocumentClassDefinition> definitionsUsedIn;

    @ManyToMany(mappedBy = "custPropDefinitions")
    private List<PropertyFolderStructure> propertyFolderStructure;

@Entity
@Indexed
@Table(name = "custom_properties")
@JsonIgnoreProperties(value = "stringValue")
public class CustomProperty extends CustomPropertyDefinition {

    @Id
    @GeneratedValue(generator = "uuid")
    @GenericGenerator(name = "uuid",length = 40)
    private String id;

    @Column(name = "definition_id",length = 40)
    private String definitionId;

    @Field
    @Column(name = "value")
    private String stringValue;

    @Transient
    private String title;

    @Transient
    private Object value;

    @IndexedEmbedded
    @ManyToOne
    @JoinColumn(name = "document_id",referencedColumnName = "id",updatable = true)
    @JsonBackReference
    private Document parentDocument;

感谢您的帮助。