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Notes about HibernateJpaVendorAdapter settings vs native Hibernate rules 

Issue: SPR-16428
This commit is contained in:
Juergen Hoeller 2018-01-29 18:40:18 +01:00
parent 4e194c3fbe
commit e1fa65a37c
2 changed files with 14 additions and 2 deletions
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6
spring-orm/src/main/java/org/springframework/orm/jpa/vendor/AbstractJpaVendorAdapter.java vendored
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@ -1,5 +1,5 @@
/*
* Copyright 2002-2017 the original author or authors.
* Copyright 2002-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -49,6 +49,10 @@ public abstract class AbstractJpaVendorAdapter implements JpaVendorAdapter {
/**
* Specify the target database to operate on, as a value of the {@code Database} enum:
* DB2, DERBY, H2, HSQL, INFORMIX, MYSQL, ORACLE, POSTGRESQL, SQL_SERVER, SYBASE
* <p><b>NOTE:</b> This setting will override your JPA provider's default algorithm.
* Custom vendor properties may still fine-tune the database dialect. However,
* there may nevertheless be conflicts: For example, specify either this setting
* or Hibernate's "hibernate.dialect_resolvers" property, not both.
*/
public void setDatabase(Database database) {
this.database = database;

10
spring-orm/src/main/java/org/springframework/orm/jpa/vendor/HibernateJpaVendorAdapter.java vendored
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@ -1,5 +1,5 @@
/*
* Copyright 2002-2017 the original author or authors.
* Copyright 2002-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -51,6 +51,14 @@ import org.springframework.lang.Nullable;
* along with Spring-driven entity scanning which requires no {@code persistence.xml}
* ({@link org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean#setPackagesToScan}).
*
* <p><b>A note about {@code HibernateJpaVendorAdapter} vs native Hibernate settings:</b>
* Some settings on this adapter may conflict with native Hibernate configuration rules
* or custom Hibernate properties. For example, specify either {@link #setDatabase} or
* Hibernate's "hibernate.dialect_resolvers" property, not both. Also, be careful about
* Hibernate's connection release mode: This adapter prefers {@code ON_CLOSE} behavior,
* aligned with {@link HibernateJpaDialect#setPrepareConnection}, at least for non-JTA
* scenarios; you may override this through corresponding native Hibernate properties.
*
* @author Juergen Hoeller
* @author Rod Johnson
* @since 2.0