spring-data

问题 I'm using a Spring Boot(1.4.7) & MyBatis. spring.main1.datasource.url=jdbc:mariadb://192.168.0.11:3306/testdb?useUnicode=true&characterEncoding=utf8&autoReconnect=true&socketTimeout=5000&connectTimeout=3000 spring.main1.datasource.username=username spring.main1.datasource.password=password spring.main1.datasource.driverClassName=org.mariadb.jdbc.Driver spring.main1.datasource.tomcat.test-on-borrow=true spring.main1.datasource.tomcat.test-while-idle=true spring.main1.datasource.tomcat

问题 I'm using a Spring Boot(1.4.7) & MyBatis. spring.main1.datasource.url=jdbc:mariadb://192.168.0.11:3306/testdb?useUnicode=true&characterEncoding=utf8&autoReconnect=true&socketTimeout=5000&connectTimeout=3000 spring.main1.datasource.username=username spring.main1.datasource.password=password spring.main1.datasource.driverClassName=org.mariadb.jdbc.Driver spring.main1.datasource.tomcat.test-on-borrow=true spring.main1.datasource.tomcat.test-while-idle=true spring.main1.datasource.tomcat

问题 What is the difference between delete(...) and deleteInBatch(...) methods in JpaRepostory in Spring ? The second one "deletes items in one SQL statement", but what does it mean from the application/database perspective ? Why exists two different methods with the similar results and when it is better to use one or other ? EDIT: The same applies also for deleteAll() and deleteAllInBatch() ... 回答1: The delete method is going to delete your entity in one operation. The deleteInBatch is going to

问题 What is the difference between delete(...) and deleteInBatch(...) methods in JpaRepostory in Spring ? The second one "deletes items in one SQL statement", but what does it mean from the application/database perspective ? Why exists two different methods with the similar results and when it is better to use one or other ? EDIT: The same applies also for deleteAll() and deleteAllInBatch() ... 回答1: The delete method is going to delete your entity in one operation. The deleteInBatch is going to

问题 Let's say I have a data model like this (pseudocode): @Entity Person { @OneToMany List<PersonAttribute> attributes; } @Entity PersonAttribute { @ManyToOne AttributeName attributeName; String attributeValue; } @Entity AttributeName { String name; } I have a Spring-Data-JPA repository defined such as: public interface PersonRepository extends PagingAndSortingRepository<Person, Long>, QueryDslPredicateExecutor<Person>{} I see in the QueryDSL documentation that there is a mechanism to Join from

来源： https://stackoverflow.com/questions/64491315/spring-jpa-pagination-on-sub-entities-using-dynamic-projection

来源： https://stackoverflow.com/questions/64224014/include-additional-columns-in-where-clause-of-hibernate-jpa-generated-update-que

来源： https://stackoverflow.com/questions/64224014/include-additional-columns-in-where-clause-of-hibernate-jpa-generated-update-que

来源： https://stackoverflow.com/questions/63976941/how-to-enable-distributed-clustered-cache-when-using-redis-with-spring-data-cach

来源： https://stackoverflow.com/questions/63976941/how-to-enable-distributed-clustered-cache-when-using-redis-with-spring-data-cach