How Write Java Configuration for this XML configuration.?

Question

I am in the middle of converting my appconfig.xml tp JavaConfigurations(AnnotationConfigs). I did converting most of the beans into JavaConfig. But I am got stuck with couple of beans which are listed below. Could some one help me on this..??

1.The Bean has a list element which takes values from a properties file.. The XML Configuration is :

<bean id="propertyCommons"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:dbUser.properties</value>
            </list>
        </property>
        <property name="ignoreUnresolvablePlaceholders" value="true" />
    </bean>

How do we convert this to java Config..(especially taking values from dbUser.properties?

2.How do we convert the following factory configuration to JavaConfigs?

    .
    .
    .
    <bean id="oozieJobFactoryBean" class="com.mycompany.product.dfe.main.OozieJobFactoryBean" />

    <bean id="cmdArgs" class="com.mycompany.product.dfe.main.CmdArgs"
            scope="prototype" />

    <bean id="oozieJob" factory-bean="oozieJobFactoryBean"
            factory-method="createJob" scope="prototype">
            <constructor-arg ref="cmdArgs" />
    </bean>
    .
    .
    .

3. Also the following Configuration ..

.
.
.
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>

<bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="persistenceUnitName" value="productPU" />
    <property name="dataSource" ref="dataSource" />
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
    </property>
    <property name="jpaPropertyMap">
        <map>
            <entry key="hibernate.cache.use_second_level_cache" value="true" />
            <entry key="hibernate.cache.use_query_cache" value="true" />
            <entry key="hibernate.cache.provider_class" value="net.sf.ehcache.hibernate.SingletonEhCacheProvider" />
            <entry key="hibernate.show_sql" value="false" />
            <entry key="hibernate.format_sql" value="false" />
            <entry key="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
            <entry key="javax.persistence.validation.mode" value="NONE" />
            <entry key="hibernate.connection.characterEncoding" value="utf8" />
        </map>
    </property>
</bean>
.
.
.

Please help me on this am new to spring.. :) Thanks in Advance...

Noushad Ali.

Evgeniy Dorofeev · Accepted Answer · 2015-06-04 11:55:11Z

1

1.PropertyPlaceholderConfigurer

@Configuration
@PropertySource(value = "spring/test5.properties")
class Config {
    @Bean
    PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
        PropertySourcesPlaceholderConfigurer c = new PropertySourcesPlaceholderConfigurer();
        c.setIgnoreUnresolvablePlaceholders(true);
        return c;
    }

...

OOzieJobFactory

class Config {

@Bean
@Scope("prototype")
CmdArgs cmdArgs() {
    return new CmdArgs();
}

@Bean
@Scope("prototype")
OozieJobFactory oozieJobFactory() {
    return new OozieJobFactory();
}

@Bean
OozieJob oozieJob(OozieJobFactory factory, CmdArgs cmdArgs) {
    return factory.createJob(cmdArgs);
}

}

EntityManager

class Config {

@Bean
LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean() {
    LocalContainerEntityManagerFactoryBean b = new LocalContainerEntityManagerFactoryBean();
    b.setPersistenceUnitName("productPU");
    ...
    return b;
}

@Bean
JpaTransactionManager jpaTransactionManager(LocalContainerEntityManagerFactoryBean emf) {
    JpaTransactionManager tm = new JpaTransactionManager();
    tm.setEntityManagerFactory(emf);
    return tm;
}

edited Jun 4, 2015 at 11:55

answered Jun 4, 2015 at 4:50

Evgeniy Dorofeev

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3 Comments

Noushad Over a year ago

Thanks @Evgeniy Dorofeev, Can you help me on my second and third question..?

user1907906 Over a year ago

Phew, code in enumerated lists really is getting ugly. I remember a Meta question about how to fix this.

Noushad Over a year ago

I think it is tm.setEntityManagerFactory(emf.getObject());

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