JPA 구성에서 기본 스키마 이름을 설정하는 방법은 무엇입니까?

JPA 구성에서 기본 스키마 이름을 설정하는 방법은 무엇입니까?

---

최대 절전 모드 구성 파일에서 매개 변수를 설정할 수 있음을 발견했습니다 hibernate.default_schema.

<hibernate-configuration> 
   <session-factory>
      ...
      <property name="hibernate.default_schema">myschema</property>
      ...
   </session-factory>
</hibernate-configuration>

이제 JPA를 사용하고 있으며 동일한 작업을 수행하고 싶습니다. 그렇지 않으면 schema다음과 같이 각 @Table 주석에 매개 변수를 추가해야합니다 .

@Entity
@Table (name = "projectcategory", schema = "SCHEMANAME")
public class Category implements Serializable { ... }

내가 이해했듯이이 매개 변수는이 구성 부분의 어딘가에 있어야합니다.

<bean id="domainEntityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="persistenceUnitName" value="JiraManager"/>
    <property name="dataSource" ref="domainDataSource"/>
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="generateDdl" value="false"/>
            <property name="showSql" value="false"/>
            <property name="databasePlatform" value="${hibernate.dialect}"/>
        </bean>
    </property>
</bean>

<bean id="domainDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
    <property name="driverClass" value="${db.driver}" />
    <property name="jdbcUrl" value="${datasource.url}" />
    <property name="user" value="${datasource.username}" />
    <property name="password" value="${datasource.password}" />
    <property name="initialPoolSize" value="5"/>
    <property name="minPoolSize" value="5"/>
    <property name="maxPoolSize" value="15"/>
    <property name="checkoutTimeout" value="10000"/>
    <property name="maxStatements" value="150"/>
    <property name="testConnectionOnCheckin" value="true"/>
    <property name="idleConnectionTestPeriod" value="50"/>
</bean>

...하지만 Google에서 이름을 찾을 수 없습니다. 어떤 아이디어?

---

이것에 대한 JPA 속성도 모릅니다. 그러나 Hibernate 속성을 다음과 같이 추가 할 수 있습니다 (Hibernate를 공급자로 사용한다고 가정).

...

<property name="hibernate.default_schema" value="myschema"/>

...

Hibernate는 그것을 선택해야합니다

---

게시물에 오는 사람들의 시간을 절약하기 위해 (나와 같이 Spring 구성 유형을 찾고 외부 소스 (속성 파일)에서 스키마 이름을 설정하기를 원하는 사람). 구성이 작동합니다.

<bean id="domainEntityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="persistenceUnitName" value="JiraManager"/>
    <property name="dataSource" ref="domainDataSource"/>
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="generateDdl" value="false"/>
            <property name="showSql" value="false"/>
            <property name="databasePlatform" value="${hibernate.dialect}"/>
        </bean>
    </property>
    <property name="jpaProperties">
       <props>
            <prop key="hibernate.hbm2ddl.auto">none</prop>
            <prop key="hibernate.default_schema">${yourSchema}</prop>
       </props>
</property>

</bean>

Ps : For the hibernate.hdm2ddl.auto, you could look in the post Hibernate hbm2ddl.auto possible values and what they do? I have used to set create-update,because it is convenient. However, in production, I think it is better to take control of the ddl, so I take whatever ddl generate first time, save it, rather than let it automatically create and update.

---

In order to avoid hardcoding schema in JPA Entity Java Classes we used orm.xml mapping file in Java EE application deployed in OracleApplicationServer10 (OC4J,Orion). It lays in model.jar/META-INF/ as well as persistence.xml. Mapping file orm.xml is referenced from peresistence.xml with tag

...
  <persistence-unit name="MySchemaPU"  transaction-type="JTA">
    <provider>
     <mapping-file>META-INF/orm.xml</mapping-file>
...

File orm.xml content is cited below:

<?xml version="1.0" encoding="UTF-8"?>
<entity-mappings xmlns="http://java.sun.com/xml/ns/persistence/orm"
                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                 xsi:schemaLocation="http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm_1_0.xsd"
                 version="1.0">
 <persistence-unit-metadata>

  <persistence-unit-defaults>
   <schema>myschema</schema>
  </persistence-unit-defaults>
 </persistence-unit-metadata>
</entity-mappings>

---

For others who use spring-boot, java based configuration,

I set the schema value in application.properties

spring.jpa.properties.hibernate.dialect=...
spring.jpa.properties.hibernate.default_schema=...

---

For those who uses last versions of spring boot will help this:

.properties:

spring.jpa.properties.hibernate.default_schema=<name of your schema>

.yml:

spring:
    jpa:
        properties:
            hibernate:
                default_schema: <name of your schema>

---

Use this

@Table (name = "Test", schema = "\"schema\"")

insteade of @Table (name = "Test", schema = "schema")

If you are on postgresql the request is :

SELECT * FROM "schema".test 

not :

SELECT * FROM schema.test

PS: Test is a table

참고URL : https://stackoverflow.com/questions/2737420/how-to-set-up-default-schema-name-in-jpa-configuration