genericgenerator

records are created each time. The default value is 50. 44 * @ GenericGenerator -- Annotation declares a primary key generation policy of hibernate. 45. Thirteen policies are supported. This annotation has the following attributes: 46 * name: Specify the generator name 47 * strategy: Specify the class name of a specific generator (specify the generation policy ). 48 * parameters: Obtain the parameters used by the specific generator specified by strat

to set the sequence name.8.Seqhilo: Implemented through the Hilo algorithm, but the primary key history is saved in sequence and is applicable to databases that support sequence, such as Oracle (less useful).9.Increment: Hibernate will add a self-incremented primary key to the primary key when inserting the data, but a hibernate instance maintains a counter, so this method cannot be used when multiple instances are running.10.Foreign: Use the primary key of another associated object. Commonly u

Recently learn hibernate annotation form configuration Pojo class, the interpretation of annotations written down for later use.Example 1. @Entity @Table (name= "user") class flight Implements serializable{ longid; @Id @GeneratedValue (generator= "generator") @GenericGenerator (name= "generator", strategy = "native") public longgetid () { return id;} public void setid (Longid) { this . Id=NBSP;ID;NBSP;}NBSP;} Hibernate can annotate a

_imodulecontrolinterface, Serializable {@ Id@generatedvalue (generator = "increment") @GenericGenerator (name = "Increment", strategy = "increment") @FieldDefine (title = "id", Number = ten) private Integer Tf_formschemeid; @JsonIgnore @manytoone (cascade = Cascadetype.refresh, Fetch = Fetchtype.eager) @JoinColumn (name = "Tf_moduleid", nullable = False) @FieldDefine (title = "Module", number =) Private _module Tf_module; @FieldDefine (title = "Ordin

;import Javax.persistence.generatedvalue;import Javax.persistence.id;import Javax.persistence.joincolumn;import Javax.persistence.manytoone;import Javax.persistence.onetomany;import Javax.persistence.orderby;import Org.codehaus.jackson.annotate.jsonignore;import Org.hibernate.annotations.genericgenerator;import Com.jfok.server.common.annotation.fielddefine;import com.jfok.server.common.annotation.tabledefine;/** * Module list scheme, a module can have multiple list schemes, can display different

1. Set the primary key in the database to varchar (32). 2. Write @GenericGenerator to the class header in entity (name = "Jpa-uuid", strategy = "uuid") 3. Write @GeneratedValue (generator = "Jpa-uuid") at the top of the ID primary key in entity Note the value in generator must be exactly the same as the Name property in Comment @genericgenerator. 4. Set the primary key ID in entity to string type. Set leng

JavaBean class to declare that this is an entity 2, @Table (name= "table name")//placed in @Entity, to declare the entity class corresponding to table 3, @Gener Icgenerator (name = "GenID", strategy = "increment")//declares how the primary key is generated (Note Before method name) 4, @Id //declares a primary key, or it can be placed before the Get method 5, @Column//declares the column in the corresponding table of the variable 6, @GeneratedValu E (generator= "GenID") //and

Javax.persistence.ManyToOne; 9 Import javax.persistence.table;10 Import org.hibernate.annotations.genericgenerator;12 @Entity//Specify an entity @Tabl E (name= "employee")//Specify the name of the table @GenericGenerator (name= "GenID", strategy= "increment")//Declare primary key generation policy-public class EmployeeBean2 {@Id//Specify PRIMARY key @GeneratedValue (generator= "GenID") Set the primary key generation strategy @Column (n

role; Public enumRole {Waiter, shopkeeper, cook} @Id @GenericGenerator (name="Generator", strategy ="UUID")//---> Indicates that the primary key is automatically generated and the policy is to generate the GUID@GeneratedValue (generator ="Generator") @Column (name="UserID", length= -)//--->column the name of the table column property in the specified database PublicUUID GetUserID () {returnUserID; } Public voidSetuserid (UUID userID) { This.

Package Com.h3c.zgc.user.entity;import java.util.hashset;import java.util.set;import javax.persistence.Column; Import Javax.persistence.entity;import Javax.persistence.generatedvalue;import Javax.persistence.id;import Javax.persistence.joincolumn;import Javax.persistence.onetomany;import Javax.persistence.table;import Org.hibernate.annotations.cascade;import Org.hibernate.annotations.cascadetype;import Org.hibernate.annotations.GenericGenerator; @Entity @table (name="T_person", catalog="Itac") P

Javax.persistence.generatedvalue;import Javax.persistence.id;import Javax.persistence.table;import Org.hibernate.annotations.GenericGenerator; @Entity @table (name = "T_dept") public class Dept {private int id;private String name, @Id @genericgenerator (name = "Generator", strategy = "increment") @GeneratedValue (generator = "generator") @ Column (name= "dept_id") public int getId () {return ID;} public void setId (int id) {this.id = ID;} @Column (na

today we are going to show you how to use JPA to implement table association queries. Today we're going to give you a one-to-many query, and it's implemented using the JPA native FindBy statement. There are two entity classes in total, one is floor (commodity floor class) and the other is floorcontent (commodity floor content table). Here's a look at the source code for two tables: Floor class: Package Cms.model; Import Cms.model.base.BaseDomain; Import Org.hibernate.annotations.GenericGenera