shop++ JPA Annotations Detailed

@NotEmpty: Cannot be "" and cannot be an empty collection.

@Column (nullable = false, updatable = false, unique = true)
Indicates that the column cannot be empty, cannot be modified, and the only

@Lob Large storage fields

@NotNull (groups = ValidationService.Save.class)
The save is not allowed to be empty, the update is allowed to be empty, indicating that the field is not updated.
@Field design a tag for an index
Name indicates the moniker of the tag
Store indicates whether storage is
Index indicates how indexes are indexed
Index.no indicates that no index is established
Index.no_norms No analysis of established indexes, no lookup
Index.tokenized do not parse the established index, can be searched
Index.un_tokenized an index created without a word breaker, it can be searched
Analyzer means all the word breakers
Fieldbridge is sometimes indexed, not the basic type, this, is a data bridge processing

@JsonProperty: Serialization/deserialization

@Field (store = store.yes, index = index.un_tokenized)
@Field: Declare that a domain can be indexed
Store. Yes: The value of the domain is saved to Lucene index, but it takes a larger amount of hard disk space.
index = index.un_tokenized: does not need to be parsed by the parser, the value of the entire domain as the index value

@Column (name = "Price", precision = +, scale = 6)
Precision data accuracy, scale decimal digits

Mappedby: The maintenance party can automatically maintain the relationship of the maintenance party. Entity class attribute name of the maintained party configured in the entity class of the content maintainer

Cascade = cascadetype.remove: Cascade Delete, only when the delete operation, the association table will have an impact. (Delete the association ID from the table before deleting the associated table).

@JoinTable: Describes the data table relationship for many-to-many relationships, the Name property specifies the intermediate table names,

shop++ JPA Annotations Detailed