hibernate

How to override @SequenceGenerator(name = “idGenerator”, sequenceName = “HIBERNATE_SEQUENCE”, allocationSize = 50)

由 [亡魂溺海] 提交于 2021-01-27 23:56:03
问题 Normally Id column is as follows and it works perfectly fine and generated sequence values @Id @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "idGenerator") @SequenceGenerator(name = "idGenerator", sequenceName = "HIBERNATE_SEQUENCE", allocationSize = 50) @Column(name = "ID") public Long getId() { return mId; } Now what I want is if in program I set xyz.setId(200) it should save Id as 200 instead of one generated by sequence.Now how can I acheive this? I also want to use both

Spring to Spring boot migration. Embedded Spring Data source

由 旧时模样 提交于 2021-01-27 23:20:37
问题 Currently, it has been used Spring Boot application with the custom Data source configuration like this one Before @SpringBootApplication(exclude={DataSourceAutoConfiguration.class, MongoAutoConfiguration.class}) public class SpringBootAppInitializer { public static void main(String[] args) { System.setProperty("java.awt.headless", "false"); SpringApplication.run(SpringBootAppInitializer.class); } } @Bean public BasicDataSource getDataSource() { BasicDataSource basicDataSource = new

Hibernate Tools fails to detect One-to-One Relationship

由 青春壹個敷衍的年華 提交于 2021-01-27 19:39:25
问题 i am trying to generate Entity Classes from MySQL database using Hibernate Tools (Annotations) in Eclipse. However, I am having trouble in generating one-to-one relationship code. My MySQL table is currently ensuring this relationship yet Hibernate tools does not detect it... "A User is Associated with Exactly One Employee" Here is the code for my tables.. Users first CREATE TABLE `user` ( `user_id` int(11) NOT NULL AUTO_INCREMENT, `username` varchar(20) NOT NULL, `password` varchar(45) NOT

Hibernate filter does not apply for join entity

由 南笙酒味 提交于 2021-01-27 19:35:07
问题 I am trying to understand hibernate filters, i thought that the filter is applied even if the query is not started from the filtered entity and can be applied if i just join to it. My entities: @Table(name = "SPM_SECTION", schema = "TEST") @GenericGenerator(name = "MODSEC_ID.GEN", strategy = "uuid2") public class ModuleSection implements Serializable { private AcademicClass academicClass; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "CLASS_ID") public AcademicClass getAcademicClass()

The server encountered an unexpected condition that prevented it from fulfilling the request

由 流过昼夜 提交于 2021-01-27 19:15:35
问题 I am trying to display Data from DB.But Shows error as The server encountered an unexpected condition that prevented it from fulfilling the request Exception org.apache.jasper.JasperException: An exception occurred processing JSP page /WEB-INF/pages/Detail.jsp at line 14 11: </head> 12: <body> 13: 14: <c:forEach var="x" items="${prdt}"> 15: <table> 16: <img src="resources/Images/${x.id}.png"/> 17: <td>" MY JSP <c:forEach var="x" items="${prdt}"> <table> <img src="resources/Images/${x.id}.png"

@OneToMany relationship does not save the primary key of the parent in the children tables

由 北慕城南 提交于 2021-01-27 19:11:11
问题 Let there be three JPA Entities. A Person and two one-to-many relations to it. When I'm trying to save the Person AD_P_ID and AC_P_ID foreign keys are always null. The expected value for these fields is the person Id. What am I doing wrong? Person.java: This contains one to Many relationships with Account and Address Entity classes: @Entity @Table(name = "A2C_PERSON") class Person implements Serializable { private long id; private List<Account> acs; private List<Address> ads; @OneToMany

Specifying type of String while setting parameter value in Hibernate

由 匆匆过客 提交于 2021-01-27 19:08:14
问题 I wonder if it's possible to control the type of string (unicode or ANSI) while setting parameter value in the queries generated by Hibernate. The problem is that the most of the tables in my application have varchar/char columns , and these columns are often appear in various filters. However, all queries generated by Hibernate set parameter type to nvarchar/nchar making all indexes built on varchar columns pretty much unusable (index scan or full table scan instead of index seek/lookups ) .

SingletonEhCacheRegionFactory is no longer available when upgrading from Hibernate 5.2 to 5.3

由 谁说我不能喝 提交于 2021-01-27 17:51:28
问题 A project I work on is currently using Hibernate version 5.2.15.Final. When configuring the second-level cache, the project has been using org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory as the value for hibernate.cache.region.factory_class . When I change the Hibernate version to 5.3.12.Final, SingletonEhCacheRegionFactory is no longer in that package. A class with that same name is available in the net.sf.ehcache.hibernate package, and I can use that with no compilation errors.

Navigation method/s in criteria fetch joins in JPA 2.1

由 江枫思渺然 提交于 2021-01-27 17:10:48
问题 While using fetch joins in JPA criteria, there is no navigation method can be seen. Given below an example. Root<UserTable> root = criteriaQuery.from(entityManager.getMetamodel().entity(UserTable.class)); Fetch<UserTable, StateTable> fetch = root.fetch(UserTable_.stateTable, JoinType.INNER); To navigate through the entity in question, this Fetch type is required to be cast to a join like as follows. Join<UserTable, StateTable> join = (Join<UserTable, StateTable>) root.fetch(UserTable_

@Transactional in the controller

由 落爺英雄遲暮 提交于 2021-01-27 17:09:31
问题 First of all I want to mention that I fully agree to only make the service layer transactional, but sometimes world is not perfect, and right now I´m in the middle of that situation. Basically I have been assigned into a wonderful project with a legacy code of 4+ years. The thing is that the developers did not follow any pattern where to introduce the bussines logic so you can image multiples services call from the controller and after that some extra call to private method into the
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